Mercedes Fan Keeps Running, Sep 1, 2025 · Understanding how to diagnose and fix radiator fan control issues is essential for every Mercedes owner who wants to keep their car running smoothly and efficiently. Anyone one else ever have a fan run excessively after turning off and locking the car. The other reason a fan will run is lack or communication through the CAN data bus. I've scanned for fault codes, everything is ok. Aug 20, 2025 · Case Study: Mercedes Fan Keeps Running After Shutdown A Mercedes-Benz C-Class owner reported the radiator fan continuing to run for over 20 minutes even after the engine was cold. Could coolant be low? Normal driving, non-spirited. May 13, 2013 · Upon startup my fan keeps running and does not stop at all until the car is off. What could the problem be? Apr 12, 2023 · The radiator fan keeps running when the car is off can be your vehicle’s way to cool off if you’ve stopped abruptly on a hot summer day, but it can also be caused by a defective temperature sensor, stuck relay switch, short circuit in the wiring system, overheated engine components, and a faulty fan motor. Cooling fan continuously running. Can anyone please share the circuits diagram for the radiator fan operation and components? The issue I have is that the radiator fan starts as soon as the ignition switch is placed on the run position even if the car is not started and have been parked overnight. Any thoughts appreciated. I recently had radiator flushed at MB. We would like to show you a description here but the site won’t allow us. Aug 17, 2025 · Why does my Mercedes radiator fan stay on all the time? When your Mercedes radiator fan is constantly running, it typically indicates an underlying issue with the engine management or cooling system. Jul 6, 2021 · Radiator Fan running full speed all the time. Seems to run between 5-10 minutes after it’s turned off. Mar 19, 2020 · 06-07 Mercedes-Benz have faulty ecm’s. This seemed to start shortly afterwards. Never noticed it before. Thanks. Ambient temp is 58 degrees F. This happens with air con and all heating off. Mercedes Benz acting up. May 5, 2015 · GLA45, GLA35 AMG (X156, H247) - Engine cooling fan keeps running - I've had my car for over four months now and for the first time yesterday, and then again today, my cooling fan runs for at least 5 minutes after the engine is shut off. 06-07 E C CLK ML GL R SL have bad E Oct 27, 2024 · The cooling fan on my 2014 C220 is running constantly, checked the code with MB 2 scanner and it indicates air con pressure sensor is open circuit, my question is there a way of testing this sensor to check if its a sensor or wiring fault? I tried unplugging the sensor but the fan still stays May 27, 2025 · GLE Class (V167) - Fan Keeps Running After I Turn Off the Car ? GLE450 - Hello everyone, I have a 2021 GLE450, and during its recent service last week, the ECU received a software update. Changed engine coolant temp sensor and still does the same. In many cases, this is completely normal. Engine temp is normal, coolant level is normal. Oct 29, 2025 · GLS continuing to run fan excessively after turning off. Modern Mercedes engines, especially turbocharged and AMG models, often allow the cooling fan to keep running for a few minutes after shutdown to manage residual May 2, 2023 · For the past 2 days my cars cooling fan has been running constantly when I start the car, and shuts off 5 seconds after I turn the ignition off. What could the problem be? May 13, 2013 · Upon startup my fan keeps running and does not stop at all until the car is off. I have a 20 GLS450. Any suggestions? Perhaps the fan temp sender is faulty Dec 4, 2025 · Understand if your car’s cooling fan is running to protect the engine or if a failed part is draining the battery. Common causes include a faulty coolant temperature sensor, a malfunctioning relay, or problems with the engine control unit (ECU). The fan may also stay on due to low coolant levels or a stuck Aug 20, 2025 · Fan Still Going When Car Turned Off: Mercedes-Benz Guide If you’ve just parked your Mercedes-Benz, switched off the ignition, and still hear the radiator cooling fan spinning, don’t panic. Nov 16, 2023 · Hello, on my E270, today I've noticed the radiator fans are running constantly after start. Temperature hovers around where it was prior to this, perhaps a few degrees cooler.
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