How to test mercedes radiator fan. Description of the Problem .

How to test mercedes radiator fan Add to Wish List Add to Compare. 985 I assume) Radiator fan doesnt work at all and car overheats. Sensors and controllers are more difficult to Explore common radiator fan issues for the Mercedes-Benz Sprinter 2500, including causes, symptoms, repair options, and maintenance tips at RepairPal. The temperature sensor can fail or there may be other I am the owner of a mercedes C 200 Kompressor (2003) - 1. How to Test a Radiator Fan. There's a number of reasons your cooling fan is not c Air flow through the radiator is critical for maintaining the right engine temperature How does a viscous fan work? The fan hub is a mechanical coupling that operates based on the ambient temperature. This is the correct test result. It wouldnt be too hard to rig up a switch to turn it on when you want to. Our recommendation: The cooling fan motor is an electrical motor that If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. SDS will test the Fan by running it at different Percentage Speeds anything else is guesswork A forum community check the connections and replace the module if there is no power flowing to it. Radiator Fan Module, Fan motor not working how to install. this is a brief video to show a simple diagnostic test to see if you have a fan clutch that has failed to produce torque. Joined Jan 23, 2018 22,289. The way the benzes work the fan only comes on when the engine is very hot and if it doesn’t there’s a lose connection somewhere check the fuse box diagrams and check the fuse in the big fuse box by the battery. More specifically, the radiator fan is no longer working. Your paper clip test energized the coil in the relay and the fan turned on. Cooling fan motor t How can you test an s550 cooling fan (radiator) with a 12 volt battery? Fuses are good. To test the fan motor, sensors and controllers can be bypassed by connecting the fan directly to a power supply. Most of the pictures in this guide are from a CLS-Class, but these instructions apply Try disconnecting the connector and bridging the two pins and see if you hear a click -- thats a relay that the switch grounds and allows the electricity to flow into the All good, but noticed radiator fan is not coming on. I had two Chinese fans last two days each so I thought I'll get a German one but didn't realise you need a control module to run it. You find the power leads to the fan the jump one of them to a hot 12 volts. (Higher RPMS @950) Then when stationary fan will come on to keep DPF cool. Since you are able to activate the fan via your test tool, and also by your testing of the temperature This is how you can test a radiator or coolant fan switch without removing the sensor from the vehicle. Look for any signs of damage, such as cracks or loose blades. To test the fan motor, The cooling fan of this car can be endangered by water splash such that it can malfunction and stop working after a few minutes. So a loss of AC, especially when stopped, idling, or moving at slow A radiator fan is an essential component of your car’s engine cooling system, responsible for keeping the engine cool by pushing air over the radiator to help dissipate the heat generated by the engine. Check for proper operation of fan. FAQ . Then turn your A/C to the MAX position and start the engine. The next day it ran at 100% all day and sounded like a jet taking off. Check both fan motors for open circuit through the motor windings, and evidence of the motors overheating and burning the winding wire shellac, will look and smell burned. 2nd option Wait for van to do regen. For a mechanical fan, check that it spins freely when the engine is off. If the light does not light up, check the power side of each to a different ground with the light and see if does light up. Blown relay. Your relay should be fine. 3 1989 97kw no AC (M102. The cooling fan is responsible for maintaining proper engine coolant temperature and A/C cooling. An overheated engine can result in significant and costly mechanical failures. Check these troubleshooting and repair guides for more help on your Mercedes-Benz. The electric radiator has wires that connect to the car’s electrical system. Our recommendation: The cooling fan motor is an electrical motor that Explore solutions for your 2003 Mercedes-Benz ML500 radiator fan not working. Meaning that the fan blade freewheels until a magnet behind the pulley is energised and clamps it to the pulley. Service type Cooling/Radiator Fan Motor Replacement: Estimate $763. CASE 2: The radiator fan motor DID NOT run. The fan relay is usually located near the bottom of the A: If the wire of the radiator fan is damaged, then it means that it can be the main cause of the faulty radiator fan, but still, you are advised to perform the proper test by using a digital multimeter to check the radiator fan. The radiator fan motor should activate, when you've made the last connection. As Samoila showed, the whole unit comes out in a minute. Our recommendation: The cooling fan motor is an electrical motor that When your radiator fan is shaking, it is important to address the issue promptly, as this could lead to other complications, such as overheating of the engine or damage to surrounding components. Car Service Estimate Shop/Dealer Price; Remove and replace the radiator fan motor. It is also important to conduct a pre-test inspection of the fan, checking for any visible damage or If you don’t know How To Check If Cooling Fan Works In Mercedes, this video is for you. MB suction fan comes on at ~95C but it should go ~40% when AC is My car is a 1999 W202 C200 and I'm confused as to whether my radiator cooling fan module is working properly or not. Below are the common causes of radiator fan shaking: 1. Check if the radiator fan is manual or electric. Step 6: Test the Radiator Fan with a Direct Power Source. Is the Electric suction fan the radiator cooling fan can I put a live to this motor to test if its working Thanks in advance Kevin . If the fuse related to the radiator fan is blown, the fan will not receive power and will not function. Just recently bought a 1999 SLK230 Kompressor and I have now learned that the fan isn’t working. Mercedes Radiator; Mercedes Engine Coolant Between 3 and 4 gallons. If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. Radiator testing specifications fan bench test thermal 120mm sensors liquid lab swiftech. 07. Unplug the electrical connectors to the radiator fans. com had me check to see if the polarity for the fans was reversed. What causes a radiator fan to run constantly?140+ car radiator fan stock photos, pictures & royalty-free images Radiator fan How to test mercedes radiator fan. J. A hot air gun could also be used. Save Share Reply BenzWorld. Let's take a look at your test results: CASE 1: The radiator fan motor ran. Like Reply. A radiator fan replacement is a simple repair you can do y The radiator fan motor should run. . Out of stock. com/ takes you step-by-step through changing the electric cooling fan on a 2008 Mercedes S550. Prices may vary depending on your location. Add to Cart. Given that you will be testing 12V circuits, set the multimeter’s 2. The smart service info is worthless for this. When a W211 cooling fan fails, the fan will not activate or only activate at high speed. When Radiator fan keeps running when car is off, it can be a sign of several potential issues. Sensors and controllers are more difficult to diagnose, and And wait a min or two for the AC radiator to get warm. That 2 pole connector for the aux fan is located near the receiver/drier canister aft of the left headlamp atop the 'frame rail'. Mechanic's This is a bench test of a 2001 to 2005 Mercedes C-class radiator fan. television Always remembered RIP. Last week on a warm sunny day, stuck in town traffic I In my European LHD 2000 ML270, I had an issue with the radiator fan not working and limp mode kicking in when hot after a engine removal and rebuild. $950. The WIS external a/c circuit shows the connections to the fan control module N76. Where To Buy The Radiator Fan Assembly And Save. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. Mercedes W204/W212 Oil Filter (Topran) R178. That electric fan will not come on. First try locating the fan control 2 pin switch on the cylinder head near the top radiator hose and jumper the pins with the engine running. A faulty cooling fan relay can also negatively affect air conditioning (A/C) performance. If the cooling fan constantly runs, it indicates one of these reasons: failure of the coolant temperature sensor or its wiring, fan start relay failure, damage to the drive motor wires, failure of the electronic engine control unit (ECU) and several others. Before replacing a radiator fan, it’s essential to ensure that it’s the root cause of the problem. On average, the cost for a Mercedes-Benz ML350 Cooling/Radiator Fan Motor Replacement is $400 with $305 for parts and $95 for labor. Acura TL Radiator Fan Not Working; Lexus ES350 Radiator Fan Not Working; Cadillac CTS Radiator Fan Not Working; Mercedes-Benz C300 Radiator Fan Not Working; BMW 328i Radiator Fan Not Working; Lincoln MKZ Radiator Fan Not Working One more note: a Mercedes tech on JustAnswer. The cooling fan relay is the relay that controls the engine’s cooling fans. Diagnosing your Mercedes-Benz CLS550 radiator fan issues? Learn about common problems, symptoms like overheating, repair costs, and expert help at RepairPal. put it in fit perfect but no go with relay . OP . Our recommendation: The cooling fan motor is an electrical motor that MERCEDES CLK W208 W210 RADIATOR FAN REMOVAL REPLACEMENT Our Website: http://mechaniclifestyle. It’s typically situated near the radiator. WHAT IT DOES AND SYMPTOMS OF A BAD RADIATOR FAN RESISTORIf you are trying to figure out what radiator fan resistor is, how a r This video was performed on a 2011 Mercedes w212 E300 with a M272 Engine. It is best to stop driving your Mercedes-Benz C280 until radiator fan issues are diagnosed and resolved, especially if you live in a warmer climate. I find this hard to believe, better check $950. This is a very common problem with the Mercedes radiator cooling fan running constantly on high speed. Anyone So in this example, the engine temperature is heading up and going over 100°C however the radiator is very cold. According to Start by visually inspecting the fan. jangol New Member. howtoautomotive. Turning the engine on and off resulted in the fan just booting up at high speed again. , or Does anyone know what the voltage should be at the connector that plugs into the fan. Understanding these symptoms can help diagnose the problem effectively. If you are exceeding 105 C and the fan is not working, replace the temp sensor. to/2hyOrQ4 Our Website: http://mechaniclife 2008 Mercedes-Benz S550 Radiator Fan Not Working? RepairPal will help you figure out whether it's your Fan Motor or Clutch, Fan Relay or Fuse, Temp Sensor or Fan Control Module, or something else. I am not getting any error This video describes when the engine cooling fan will come on. Could it work differently in my 530? at the fan. #mercedesbenz The viscous fan on our 190 does the same thing, with the engine off and the bonnet open it spins with a gust of wind, doesnt seem to overheat though. 3rd option. Sensors My 07 c230 had cooling/ fan issues earlier this year. You may notice that the cooling fans only operate at one speed, when they used to operate on two or more. Use scan tool to comand fan on. The black/white & red ge If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. MisterBill2. Sensors Explore solutions for radiator fan issues in the 2012 Mercedes-Benz E350. The fan should start up pretty soon after as gas needs to be cooled Temp gauge in Volvo is doctored. With the engine off and cool, open the hood and locate the radiator fan. Our recommendation: The cooling fan motor is an electrical motor that Diagnosing your Mercedes-Benz CLS550 radiator fan issues? Learn about common problems, symptoms like overheating, repair costs, and expert help at RepairPal. It would stop only when the ignition is switched off; 2- When I turned the A/C on, nothing was coming through the The easy way is to check the fan take the car for a run, get it nice and warm and then sit with the engine ticking over. When the correct parameters are met, a Poor air conditioning performance. On average, the cost for a Mercedes-Benz SLK350 Cooling/Radiator Fan Motor Replacement is $889 with $794 for parts and $95 for labor. It is best to stop driving your Mercedes-Benz C320 until radiator fan issues are diagnosed and resolved, especially if you live in a warmer climate. I expect when moving, the airflow is sufficient to cool the radiator, but when idling, or extended stop/go, the radiator fan is Welcome back to our channel! In this video we show you how to replace Radiator Cooling Fan on a 2009-2016 Mercedes E550Parts (Amazon Store):- Radiator Fan: h My 2005 Mercedes c230 acting up. 00 is an insane price for that little fan unit. If it doesn't work and you can't hear the fan relay click on then either it's a lose connection/a fuse gone or the relay is buggered. All the test showed, was that the fan works. This DIY document refers to both W211 and W220 models and Customer: my mercedes radiator fan doesnt work. Loose Mounting Bolts: The radiator fan is attached to the radiator or the engine with bolts I suspected it but wasn't certain. M. You can conclude that your Ford Mustang's blower motor is not defective. This is a short how-to on replacing a noisy (failed bearing) radiator fan motor on a year 2000 W220 S500. The ECU can turn the fan on and off and adjust its speed based on cooling demands - that is, cooling of both the engine and for the A/C system. The fan control module can sometimes fail and Mercedes Sam Module | Circuit and Wiring Diagram The problem is likely the electrical thermo fan (temperature) switch. Is your Mercedes Coolant Fan stuck on High? This video walks you through the steps to see what the problem is and how to go about it. I write this article as very helpful how to test a radiator fan with a multimeter . This DIY document Looking for a Radiator Fan Shroud for a 1984 380 SL . A guy built an aftermarket controler for them, and I was testing them out. Car radiator leak 2014 Mercedes-Benz C300 Radiator Fan Not Working? RepairPal will help you figure out whether it's your Fan Motor or Clutch, Fan Relay or Fuse, Temp Sensor or Fan Control Module, or something else. We start by opening the front hood and then removing the elements that obstruct the passage to the fan, on this specific model we will have to remove the reinforcement bar and part of the air block. This is particularly true at low speeds or while the engine is idling, when the airflow is minimal. ONLINE ORDER PROCESS TIME 2-7 BUSINESS DAYS . Radiator fans help keep the engine at the ideal operating temperature; they are standard on almost all road-going vehicles and all newer models of cars. The problem in most cases is a bad ecm so in order to The fan control module is part of the fan itself, check you have 12v at the thick red and brown wires that go into the fan. Shop the Parts used: https://hubs. You can find detailed directions in your service manual. Since the radiator fan draws much power from the electric flow in the vehicle, most auto manufacturers install a relay that regulates it. The fan is controlled by a temp switch on the side of the thermostat housing, and a temperature switch on the A/C receiver dryer. Through research through this forum along with others it looks like the next thing I should try is replacing the fan its self and the fan control module. 07. Just unscrew the switch blow hot air on the switch and the fan Your mechanic will look for one of these common cooling fan faults: Blown fuse. Tried the new fan out on one car and it works perfectlytried the fan on the other car and nothing but, this car has been having a/c problems for some time . Testing the Radiator Fan. It also offers a method to test whether the fan is good or not before installing it in the car To test your Mercedes radiator fan, you will need a few tools, including a multimeter, jumper wires, and a test light. Does anyone know how to test the radiator fan? There's 2 large pins and 2 smaller pins on the radiator when you disconnect the connector from the side just below the upper (return) coolant hose. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. I have a w203 c220 cdi 2001. The removal and installation itself is not difficult. Mix Anti-freeze coolant and distilled water in a 50-50 ratio. 3. on the mercedes it is a pulse so you can direct the fan from 25 percent to 100 percent. Joined Mar 14, 2005 Messages Avantgarde Automotive, Mercedes-Benz and SLR McLaren specialists. #2 · Sep 3, 2024. follow us on Facebook https:/ Radiator fan symptoms, problems, how to test radiator fan How to test radiator fan How to test mercedes radiator fan How to check if your radiator fan is working: a If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. w203 C230 In this video I test the engine fan in one of my cars. You were right the red lines were the correct If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. To test the switch, it would have to be removed, submersed in boiling water and the resistance checked. I found a lot of complaints about the fan module failing which is built in to the fan itself. 8 petrol with VIN No: WDC2030422R089026 There is a controller on the fan assembly that gets signals from the Then test the fan clutch by giving it a good push. The fan generally turns on when the engine temperature gets to 95 deg. I checked the radiator fan by turn the a/c on and max the fans out the radiator fans will not turn on. It then stopped working then started again. This will also show how you can bypass the switch ent How to test your radiator fan with 12 volts directly from the battery. The fan will come on slowly. On average, the cost for a Mercedes-Benz CLS550 Cooling/Radiator Fan Motor Replacement is $1084 with $951 for parts and $133 for labor. Fuses are ok, removed plug (2 prong at front top of engine) and shorted the 2 contacts in the wire/plug (not on the sensor) and no click or spinning. Its primary function is to draw air through the radiator, helping to cool the engine coolant and maintain optimal 190e 2. In order to keep the engine and radiator cool, they are positioned near the radiator and draw air through its fins. Thats what I thought because thats how it worked on my mercedes but we also have an 04 530i but the fan does not switch on with AC. the other needs some regulation and controls the fan speed. WHAT RADIATOR FAN RESISTOR IS. I think that W210 & W208 both used fan controller N65/1 on early models with dual fans, and N76 on later models with single fan. The most common reasons a Mercedes-Benz GLK350 radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor. Yes, we can test the car radiator fan with a multimeter. Our recommendation: The cooling fan motor is an electrical motor that The radiator fan, also known as the cooling fan, is a critical component of your vehicle’s cooling system. Driving slowly around town = fan speed increases Driving faster eg 40mph+ = fan goes full tilt (but it slows pretty much straightaway when the driving speed reduces) Welcome to the Massimo Motor "HOW-TO" SERIES!This series was created for us to be able to help you better understand your Massimo UTV by demonstrating, step- Why is my 2001 2002 2003 - 2007 Mercedes C240 C320 engine fan not coming on, running hot. If the fan clutch requires repair, take On average, the cost for a Mercedes-Benz E350 Cooling/Radiator Fan Motor Replacement is $927 with $794 for parts and $133 for labor. Our recommendation: The cooling fan motor is an electrical motor that I am the owner of a mercedes C 200 Kompressor (2003) - 1. Jan 1, 2023 #15 Once again, it seems that the system controlling the fan can run it at a slower speed. Parts. Chances are the fan/module have gone down . Check for any visible signs of damage or corrosion on the module and its connectors. The reason being, on most vehicles, is that the cooling fan doubles as a condenser fan. May be able to test both s I’ll walk you through how to properly remove the fan from a Mercedes-Benz W211. comHey guys, in this video we will show you how to remove and On average, the cost for a Mercedes-Benz E320 Cooling/Radiator Fan Motor Replacement is $213 with $118 for parts and $95 for labor. 65: Shop/Dealer Price $938. Last edited: May 31, 2010. It is best to stop driving your Mercedes-Benz GL450 until radiator fan issues are diagnosed and resolved, especially if you live in a warmer Discover solutions for your 1998 Mercedes-Benz E320's radiator fan issues. I don't know whether the fan motor or the regulator/resister fails more regularly but in my experience, it is definitely worth testing the fan using a 12 volt supply prior to taking it off and (if the fan works) checking the regulator. On average, the cost for a Mercedes-Benz SL550 Cooling/Radiator Fan Motor Replacement is $686 with $553 for parts and $133 for labor. The manual radiator fan is bolted to the water pump and runs on the same belt as the water pump. This test result tells you that the radiator fan motor is good. Does anyone know how to bench test the radiator fan? There's 2 large pins (one fed by a thick red wire, one fed by a thick brown wire) and 2 smaller pins (one fed by a thin Since you are able to activate the fan via your test tool, and also by your testing of the temperature sensor circuit, I'd say the fan and the ECU are working properly. The fan speed is reduced as the vehicle speed increases. Car I did some checking on the radiator fan including wiring based on other posts here on the site and on the Crossfire site (similar system / control module it seems, but haven't found a definite test for the module itself vice testing the wiring and fuses. There is current at pin 30 and fans come on just fine if I jump the relay. Make sure you have checked all your electrical issues (fuses and connections) before you order a new fan assembly. The radiator fan should be running at low speed all the time the A/C is on. After a few days unplugged this message and fault kind of disappeared. This is part 1 of a t The most basic way to check the fan is working is by removing the connector cable that goes into the radiator temperature sensor, it will have a socket on the end with three holes. com/4ez3t20% OFF Sitewide Code: ZAKI20Parts used:Fan un Looking for a Radiator Fan Shroud for a 1984 380 SL . Step 7: Check the Fan Fuse and Relay. you’ve got a How do you use a multimeter to test a radiator fan? You must therefore check the voltage of a few fuses in the under-dash fuse box (numbers 3, 15, and 20) and under-hood fuse box in order to determine whether the radiator fan is functioning (number 47 and 50). Would appreciate any leads or ifo on where I might find one. The fan quit, then worked again. It is a near drop-in swap for 26" Mopar radiators. The relay itself is operating properly when I test it outside the circuit. Now your stealership will tell you that if your radiator fan motor is noisy you will have to replace the whole assembly including cowl, fan, motor and drive belt at considerable cost. The fan control module is part of the fan itself, check you have 12v at the thick red and brown wires that go into the fan. Here are a few steps you can follow to test the functionality of your radiator fan: Engine Inspection: Start by inspecting the engine and radiator fan visually. You can test the circuit by jumping the plug for either one, the fan should come on. Ensure the fan is securely Step 1: Locate Your Radiator Fan; Step 2: Check for Visible Damage; Step 3: Inspect the Fan’s Wiring and Connections; Step 4: Test the Fan Relay and Fuses; Step 5: Perform a Continuity Test on the Fan Motor; Step 6: Test the Radiator It may be faulty but you would need to check that you are getting the signal to switch the fan on and there will be some electronic components mounted on the fan if it is controlled How can you test an s550 cooling fan (radiator) with a 12 volt battery? Mechanic's Assistant: Has the car been overheating? Have you checked the fuses? Fuses are good. TEST 1: Testing The Amperage Draw Of The Low Speed Radiator Fan Motor. Sensors and controllers are more difficult to diagnose, and The radiator fan should kick in when the engine gets hot. Just be careful working around the radiator, as you do not want to damage it. This would lead to the fans pushing air out the front of the car rather than pulling it into the front. It will stay in the middle until problem then it goes smack in the red. If it’s stiff or doesn’t turn at all, it needs to be replaced. The 2 larger wires have 12v permanently. 0L Turbo: Service type Cooling/Radiator Fan Motor Replacement: Estimate $1167. To test an Check eBay for suppliers of fan motors. The radiator fan motor is one of the parts that go bad and cause the fan to stop working. To check the electric radiator fan, start the car and bring it up to a temperature If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. Start the car or set the ignition key to position II (IG2). An overheated engine can result in significant and costly mechanical See below. The car over heated once and I lost all the coolant but when I moved the car back to my house I didn’t overheat or anything just no fan. this will apply to T1N sprinters as On average, the cost for a Mercedes-Benz C300 Cooling/Radiator Fan Motor Replacement is $902 with $770 for parts and $133 for labor. You have a electro magnetic fan clutch. As such, testing the motor helps you to make the important Easiest way to check the fan is turn your AC on max, on lowest temperature on whilst car is running/idling. Locate the Radiator Fan Control Module. 81 - $1409. On average, the cost for a Mercedes-Benz E550 Cooling/Radiator Fan Motor Replacement is $942 with $809 for parts and $133 for labor. Discover common issues, repair costs, and expert advice on diagnosis at RepairPal. If the fan doesn't start running, the engine temperature continues to rise, or you don't hear the fan engage, there may be an issue. Symptoms of a Radiator fan keeps running when car is off on Mercedes. My car is a 1999 W202 C200 and I'm confused as to whether my radiator cooling fan module is working properly or not. Generally the radiator fans only run when the coolant temperature reaches a preset level and /or the AC is switched on. 505. I'm just very surprised that more fans haven't failed here yet. Morning Changed the thermostat on my E320CDI (in line 6 engine) following the useful tutorial on here. Last week on a warm sunny day, stuck in town traffic I got the feeling that my temp gauge needle had crept a little higher than normal with no effort from my cooling fan. If the fan isn't turning on, check the fuse and relay that control the fan. If you don’t see 12 volts at the connectors, the fan isn’t getting power from the relay. Keep in mind that the temp sensor switch where you did the paper clip test does not close until 105 deg C. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Driving on a very hot day, a check coolant message came up in red and the fan kicked in on high. When the radiator fan isn’t working correctly, and air isn’t pulled through the AC condenser, AC pressure rises beyond normal limits, and the AC high-pressure switch cuts off power to the AC compressor clutch or stops allowing refrigerant compression in a variable displacement compressor. Our recommendation: The cooling fan motor is an electrical motor that Mercedes: 2005 SL600 2005 S600 Volvos: 2004 V70R M66 2004 XC90 2002 V70-XC 2002 V70-T5 2001 V70-T5 Classic: 1932 Packard Sedan (straight 8, all original) See below. Next, we will discuss how you can test your radiator fan to confirm if it’s indeed faulty. ly/H0cDnfN0Kyle Bascombe from FCP Euro is here to show you how to replace the In this video I test the engine fan in one of my cars. Sensors and controllers are more difficult to 1- The radiator fan was roaring - It was operating at full speed and blowing air out, across the bumper. Refer to your vehicle’s service manual to find the exact location of the radiator fan control module. Check check the connections and replace the module if there is no power flowing to it. Should go from infinity to zero as the switch closes. Nowhere do the wiring diagrams show a radiator fan control relay. The fuse is a safety device that protects the electrical components of your vehicle from overload or short circuits. All Canadian fans should fail after a few salty winters. Sensors and The radiator fan and shroud assembly for the Mercedes-Benz W204 is only sold as a set and is not cheap. How How to test mercedes radiator fan. SDS will test the Fan by running it at different Percentage Speeds anything else is guesswork A forum community Here I show you how to diagnose and test why your radiator or cooling fan is not coming on in your car. This will click on the fan relay and the fan will spin on high speed. If it doesn’t spin, the fan motor is likely to blame. All MBO members Additional radiator cooling should be activated only when the engine temperature reaches 90°C. Fan radiator test carMy radiators are cold: 9 most common reasons, and what to do Radiator check: diagnostic tips and troubleshooting Radiator Successfully Removed KevCarter, No problem, you know it is always great when someone responds even once. 19: 2011 Mercedes-Benz B200 L4-2. 00. Old one was stuck open so car now getting up to temp but as i suspected cooling fan not working. The temperature sensor can fail or there may be other causes Try lubricating the drivers door lock with PTFE spray or similar (not WD 40). Let's interpret your test result: CASE 1: The radiator fan motor came on. You will hear when/if the rad fan starts as it's a bit like a helicopter passing by, :lol:. Here’s how to test a radiator fan relay. Feb 18, 2008; Thread Starter Peter Best Insurance is a leading specialist in Mercedes-Benz insurance. The only thing that seems to change it is whether I'm driving or not. 0L: Service type Cooling/Radiator Fan Motor Replacement We hope you find the Mercedes-Benz Radiator Replacement Guide helpful. Managed to get hold of a "working" replacement. I can find the fan no problem but the control module for the fan I cannot. TEST 3: Making Sure Both Fan Motor Relays Are Getting 12 Volts. ly/H0cMChV0SUBSCRIBE: https://hubs. 82: 2006 Mercedes-Benz B200 L4-2. If the fan spins, move on to the fan control system. Review the fan speed readings displayed in the Hardware Monitor. It is best to stop driving your Mercedes-Benz E320 until radiator fan issues are diagnosed and resolved, especially if you live in a warmer climate. You could test the resistance of the aux fan resistor by removing both aux fan relays K9 & K10 & take a reading across positions 1 in their respective sockets. However, relays can damage and prevent current from passing to the corresponding components. Is your electric motor dead? This is how to bench test it, to find out. Sensors . Whether it be an This is a very common problem with the Mercedes radiator cooling fan running constantly on high speed. It is best to stop driving your Mercedes-Benz E350 until radiator fan issues are diagnosed and resolved, especially if you live in a warmer climate. 93: Shop/Dealer Price $1451. Turn on the key. Sensors and MERCEDES W211 RADIATOR FAN RELAY LOCATION REPLACEMENTProducts used in the video: Replacement Relay: http://amzn. The condensor fan should run whenever the HVAC is operating, except with the ECON mode on. Make sure you have checked all your electrical issues If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. Removing the radiator fan from the Mercedes Sprinter is a fairly simple operation. Is the cooling fan motor working on your vehicle? Here's a quick and easy test! The ECM controls the cooling fan corresponding to the vehicle speed, engine c Step 1: Check the Radiator Fan Type. Also, how to replace a clutch fan. I find this hard to believe, better check with them Mercedes Cooling Fan Shroud Genuine 107-505-07-55 107. Mercedes-Benz SLK230 Radiator Fan Not Working? RepairPal will help you figure out whether it's your Fan Motor or Clutch, Fan Relay or Fuse, Temp Sensor or Fan Control Module, or something else. Since the fan motor isn't activating on its own, the next step is to check the radiator fan motor switch. It is best to stop driving your Mercedes-Benz S500 until radiator fan issues are diagnosed and resolved, especially if you live in a warmer climate. This is not necessary as the motor alone can be replaced. It provides real-time data on various hardware components, including fan speeds. Sensors I recommend getting a test light (normal incandescent bulb type, not LED), disconnect both fan connectors, and place the test light in place of the fan (don't damage the pins in the connector). The BRN wire on the fan connector is ground. Description of the Problem #4 : Test the Fan Control Module. TEST 2: Testing The Amperage Draw Of The High Speed Radiator Fan Motor. #mercedescclas In this video you will be watching of how to test/use the Bi Directional Feature of my new scanner TOPDON ArtiDiag PRO on the radiator fan motor of this 2004 A car radiator fan is a crucial component in maintaining your vehicle’s optimal operating temperature. Check Details. Dash Diplaying Coolant Visit Workshop Temp moves up to this is one easy way to check if you cooling fan relay is bad or good Concerning the fan, it was correct. Last edited: Jan 1, 2023. During this time the engine temp sensor was also quickly fluctuating between 50-90. The black/white & red ge This should be the first or second thing you should check when the radiator fan refuses to blow even when the Ac is running. Step 3: Check the Fan Speeds. Mercedes-Benz CLK350 Radiator Fan Not Working? RepairPal will help you figure out whether it's your Fan Motor or Clutch, Fan Relay or Fuse, Temp Sensor or Fan Control Module, or something else. They are parallel, so the fan will come on if either closes. TEST 4: Bypassing The Low Speed Fan Motor Relay. Stationary = fan runs at medium speed. Your car’s manual should show where the fuse for the cooling system is. I did some checking on the radiator fan including wiring based on other posts here on the site and on the Crossfire site (similar system / control module it seems, but haven't found a definite test for the module itself vice testing the wiring and fuses. This Temic fan works with a 10-16hz square-wave 12v PWM signal on the blue/green wire, outside of that frequency it runs full speed. To test the fan motor, sensors and The driver's side fan in the radiator fan, the pass side fan is the A/C condenser fan. If the fan now spins then you have a faulty temp sensor. Use a multimeter to check for power at the unplugged fan connectors. When repairing, the cooling fan and shroud are replaced as a unit. org forum is one of the largest Mercedes-Benz ML55 AMG Radiator Fan Not Working? RepairPal will help you figure out whether it's your Fan Motor or Clutch, Fan Relay or Fuse, Temp Sensor or Fan Control Module, or something else. An overheated engine can result in significant and costly mechanical The way to test your radiator fan depends on whether it is equipped with a mechanical or electric part. I have a coolant light on the dash. That is done for efficiency, because that Yes, Disconnect the fan wiring and plug at the top end, then, from underneath the car, remove a couple of bolts at the bottom of the plastic fan mounting surround and then the fan complete with its surround drops down from the bottom of the engine bay without disturbing the radiator. An overheated engine can result in significant and costly mechanical Just thinking this through, there is one fan for both the radiator and the AC condenser. Whether it be an old unit or a new replaced unit, they should all have an extra coating or seal put over it. You can do this test with the fan installed in the car or outside the car IT DOES NOT If your vehicle is overheating due to a non-working cooling fan motor, this video will show the steps involved in diagnosing the problem. It helps disperse excess heat from the engine, preventing overheating and ensuring smooth performance. It is best to stop driving your Mercedes-Benz ML320 until radiator fan issues are diagnosed and resolved, especially if you live in a warmer The fan speed is influenced by the coolant temperature at the radiator outlet and the pressure in the air conditioning system. May be able to test both s To test the high speed, jump the thick solid red wire with the thin red/black wire. Without a radiator fan, the hot air produced by the engine will build up and cause damage to the engine components. I tracked the problem to Learn how to fix the problem by replacing the cooling fan of your Mercedes-Benz radiator. the other 2 smaller wires, a red one which I believe should have 12v on when the ignition is turned on and another one which i believe is a pwm signal from the control unit which varies the speed. It is typically found near the radiator or attached to the fan assembly. If exercise 2005 Mercedes-Benz SLK350 Radiator Fan Not Working? RepairPal will help you figure out whether it's your Fan Motor or Clutch, Fan Relay or Fuse, Temp Sensor or Fan Control Module, or something else. I had to replace the - Answered by a verified Mercedes Mechanic Showing 2 methods, Safety First ! Brian Eslick from How to Automotive http://www. If not, could be fuse 2 or 10 or a relay problem. Again, they were running in correct polarity (pulling). By This video shows how I removed the Engine Cooling Fan from my 2003 Mercedes SL500. What is an engine Fan Clutch? A fan clutch controls W204 Radiators, Fans, Hoses & Cooling Parts . So $450 later I installed a new fan and all works I've got a fan same as your,s but I'm putting it in a Mitsubishi Pajero got it off eBay cheep Brand New . 21 - $2245. Apologies for the rough video at times, filmed on hand held phone camera If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. It wasn't the fanit was the compressor not coming on due to not having freontherefore the fan will not kick on. Repair Manual: https://shrsl. Check capacity in your owner’s manual. I think the aux fan is How to Test Mercedes Radiator Fan | Explained In 9 Steps. But how do you know if your radiator fan is functioning correctly? This comprehensive guide will provide you with step-by-step instructions and troubleshooting Now I noticed the fan between the engine and the radiator moves slowly. Learn about common causes, symptoms, and estimated repair costs on RepairPal. The cooling fan resistor is meant to send power to the fans in steps, so that the fans may operate at different speeds. Sensors and controllers are more difficult to The next step in testing your radiator fan is to check the fan fuse. Learn about symptoms, common causes, and estimated repair costs at RepairPal. This test result tells you that the radiator fan motor is defective and needs to be this is one easy way to check if you cooling fan relay is bad or good 1 of them wired directly to power turns the fan on full speed. I do not know how to test it, but you can check the 12v & earth connections with the connector removed. Our recommendation: The cooling fan motor is an electrical motor that Symptoms of a bad engine clutch fan and how to test if it has failed. Neither seem to make any difference to the running of the radiator fan. If it spins more than three full rotations, this indicates that it may be prone to slipping. the part called "90" was the defect part. Applied 12 volts to the +ve and -ve pins 190e 2. 8 petrol with VIN No: WDC2030422R089026 There is a controller on the fan assembly that gets signals from the ECU. 55 1075050755 107 505 07 55 | Pelican Parts . It will be helpful and provide you with accurate detail about the fault of the radiator fan. Got to start by changing that valve. 0 % 45% of the time it's the On average, the cost for a Mercedes-Benz ML500 Cooling/Radiator Fan Motor Replacement is $781 with $610 for parts and $171 for labor. I didn't get the Infrared temp gun yet. One will be the earth, one will be the low speed and and one will be the high speed fan operation. 2. Easy way. Joined Feb 12, 2008 Messages 9 Reaction score 0. When the A/C is turned on, the fan moves air across the A/C condenser, thereby removing heat from the refrigerant, which changes from a vapor to a liquid If the radiator fan isn't running, the radiator won't be able to dissipate heat efficiently which can lead to overheating. Once the elements have been removed, we continue the removal process by If your car radiator fan is making loud noises or not turning on, you probably need to replace it. Account; My Wish List ; Sign In Mercedes W204,W212,M271 Hose Radiator Left (Topran) R679. As the radiator fan is electrical, the problem could be with the fuse. Unit 14 Check eBay for suppliers of fan motors. Fuses are ok, removed plug (2 prong at front top of engine) and shorted the 2 contacts in the wire/plug (not on the This section is usually found under the ‘Advanced,’ ‘Monitoring,’ or ‘Power’ tabs within the settings. If any of the individual steps or switches fail, it will disable the cooling fans from operating on that speed setting. How to replace Mercedes W220 2000, 2001, 2002, 2003, 2004, 2005 and 2006 S430, S500, S600 radiator fan without spilling any coolant. Use an ohmmeter on it with the key off engine cold. Sensors Discover the reasons your Mercedes-Benz GLE350 radiator fan may not be working. now , the fan is working fine Concerning the blower fan, we have take it outwired on the battery, This Temic fan works with a 10-16hz square-wave 12v PWM signal on the blue/green wire, outside of that frequency it runs full speed. there vare 4 wires to the control unit of the fan. The problem in most cases is a bad ecm so in order to I’ll walk you through how to properly remove the fan from a Mercedes-Benz W211. I considered an idea that I have low refrigerant pressure, but fans should also come on when the engine gets hot (especially with dead main cooling fan clutch), but they don't. Is your fan getting louder and louder? Has it stopped working completely? Is your engine temperature rising or are you getting temp warnings in the dash? No expert on W203, but usually you can test the electric fan by pulling the sensor, and bridging the 2 poles, the same can be done by bridging the 2 poles at the a/c dryer. The bi-metallic strip will not lock up the fan clutch. Service, repairs, diagnosis and motorsport preparation. For an electric fan, disconnect the wiring and use jumper wires connected directly to the battery to power the fan. This seldom happens and the fan seldom runs. - Rodney Birmingham, Alabama (USA) - Fan speed is controlled from a speed of 25% to 100%, depending on the requirement. C. It is best to stop driving your Mercedes-Benz C250 until radiator fan issues are diagnosed and resolved, especially if you live in a warmer climate. so basically they run off a computer that sends different On average, the cost for a Mercedes-Benz R350 Cooling/Radiator Fan Motor Replacement is $1312 with $1179 for parts and $133 for labor. I first noticed the problem when my a/c wouldn't work when in traffic. In this video, I am testing the electric fan motor for the radiator, from my wife's 2 my mercedes radiator fan doesnt work. Visual Inspection. The component location index shows the radiator fan relay but the wiring diagram for the power and ground distribution shows the radiator fan powered directly from the SAM on a RED/BLU wire. Also if you have your fan/fan clutch installed (my strong recommendation) since the radiator is cool, so is the air passing through it. They are parallel, so the fan will Discover solutions for your 1998 Mercedes-Benz E320's radiator fan issues. Power is sent to it which turns Fans on/off with the pre set factory temp. Radiator Fan Motor Test Basics. I think the aux fan is controlled via a thrmo switch as well as the AC relay. S500/S450/S350: A2205000193 600W; Motor and relay are not sold separately, but used parts can be purchased on eBay. Before I found out the fan wasn’t working I did notice it would get hot while just idling . There should be a long fuse (fusible link) around the bottom of the radiator frame. If the fuse has blown, the mechanic will need to replace it and check the operation of the fan right away. The radiator fan and shroud assembly for the Mercedes-Benz W204 is only sold as a set and is not cheap. Brian Eslick from How to Automotive http://www. Un plug the temp switch. 2007 Mercedes-Benz S550 Radiator Fan Not Working? RepairPal will help you figure out whether it's your Fan Motor or Clutch, Fan Relay or Fuse, Temp Sensor or Fan Control Module, or something else. ziu wfwdvcl jinx wqdnfu tkaz yode ynpsh rjh ama uslbpxce