Mercedes Fan Running When Car Is Off, So I guess when I turned

Mercedes Fan Running When Car Is Off, So I guess when I turned the engine off, the fan stayed on and ran all day until the battery was drained. I went out, started the car, and then turned it off, which finally stopped the blower. The fan run while the car is off, or start 30 mins later. May 15, 2011 · With the car off, and the fan switch in the "off" position, there should be no power to the white/pink lead. Sep 12, 2009 · I have a 2000 CLK320 and my fan runs continually even when the car is off and the keys are in my hand. However every now and again, the electric fan turns itself on FULL (making quite a noise!) after I have removed the key from the ignition and locked the car. Went to the dealer twice, they checked on computer, all codes I thought I had turned off the car, but my daughter noticed the heater was still running. Jun 28, 2023 · Hello World, 2011 Mercedes E 220 CDI /D 270. Unexpected fan activation issue Mercedes Mechanic: JoshS0603 Thank you for reaching out to the community of experts. Temperature hovers around where it was prior to this, perhaps a few degrees cooler. It takes about 20 seconds before there is a relay click and the fan starts. When the car is turned off , the blower starts up after a few minutes and continues to We would like to show you a description here but the site won’t allow us. Emptying battery. The fan continues to run at its maxiumum speed, regardless of the engine temperature. With the car on, the voltage to the white/pink lead should increase as the fan switch is rotated from "off" to "high". Cooling fan runs continuously when car is turned off. I eventually removed the fuse (#25) to stop it and it worked, but now I obviously have no A/C or defog etc. Stay updated with the most recent car news, automotive trends, expert reviews, and industry rumors at Autoblog. This is a normal function, and the fan will eventually turn off. Mar 18, 2025 · Explore the Mercedes-Benz cooling fan problem, including causes, owner feedback, and important recall information. Oct 11, 2016 · Hi guys A couple of days ago i noticed that the radiator fan starts running immediately upon start up and is really loud the fan runs continously the first 10-15 min an then goes off. Jul 30, 2024 · I'v acquired an E220d w211 (2009) and have an issue with the radiator cooling fan constantly running even when the engine is turned off, this eventually will drain the battery. The fan will on at high spend for about 5 mins, and the at relatively low speed. 000 km. Generally the car is running fine, no fault lights etc. I have to unplug the batery to avoid get dead. Jul 23, 2007 · After work today, I came out to my car to find the battery was D-E-A-D. Fix your car now—read our expert guide! Dec 4, 2025 · The electric cooling fan runs after the engine is off primarily to prevent heat soak. The AC is OFF. I allready change the cooland temp sensor, and i still have the problem. When the car is turned off , the blower starts up after a few minutes and continues to Feb 24, 2017 · I got a Mercedes Benz C 300 Sport 2011. The radiator and condenser are BRAND NEW. This starts after turning of ignition, removing key and exiting vehicle. May 14, 2025 · Discover why your Radiator Fan keeps running when car is Off and learn how to fix common issues like faulty sensors, relays, and coolant problems. Aug 20, 2025 · Radiator Fan Keeps Running When Car is Off? Find out why it happens, what it means, and how to fix it before it leads to battery drain. five seconds after the car is off, there is a click in the dash and the blower goes on. The cooling fan on the vehicle will automatically activate after driving periodically to help cool down the engine and regulate its temperature. . It would not maintain proper temperature and the fan speed would not change in manual mode. I hit AC Rest twice and it goes off, only to go on five seconds later again. If I close the car with the beeper or open or close any door the fan start running even with the car is cold. I quickly found that radiator fan (or auxiliary fan) was coming on and ki Is your fan still running when car is off? Obviously, yes, and that's why you have landed on this page. Mar 3, 2022 · Hey guys, does any of yours vehicle’s radiator fan will go on for around 10 mins after turning the vehicle off? Oil temp, coolant temp etc all normal. With the latest cold snap here on the east coast my battery in the C230 kept dying. This problem existed before and after the radiator was replaced. This happens even when Unexpected fan activation issue Mercedes Mechanic: JoshS0603 Thank you for reaching out to the community of experts. Jul 8, 2025 · Each Mercedes model, including the 2018 Mercedes radiator fan issues symptoms and fixes guide, shares these common symptoms, but the severity and frequency can vary based on age and mileage. As soon as the jumper cables were hooked up, a fan in the front came on. Nov 6, 2015 · The battery was totally dead this morning . Jul 30, 2023 · Immediately upon starting the car, the radiator fan begins to run full speed, even though the car is stone cold. This happens even when Apr 24, 2018 · Would really appreciate some expert advice. I'm glad to assist you. After boosting the car the climate control did not function properly . All is fine don't worry. Car is a Mercedes-Benz R Class How to fix Mercedes Fan on high speed even when ignition is off Here at Ecuboot, we offer German Automotive Diagnostic Trainings such as: Mercedes, BMW, Volkswagen and Audi. Has this happened to anyone? Any idea Discover the potential causes of loud fan noise in your Mercedes-Benz and find detailed solutions to resolve the issue, ensuring a smooth, quiet ride. Apr 24, 2018 · Would really appreciate some expert advice. Feb 10, 2023 · The fan runs to prevent heat soak to turbo etc, it happens most in cold weather but that's down to the instant heat matrix needing cooled. When the engine stops, the water pump also stops circulating coolant, meaning the heat generated by the engine block and cylinder head has nowhere to go. Car is a Mercedes-Benz R Class Jun 28, 2023 · Hello World, 2011 Mercedes E 220 CDI /D 270. 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. ) 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. Nov 3, 2011 · I have a 2007 ML350 and the battery died the other day because the blower/ac stays on after the car is off and key is out. Aug 17, 2025 · Mercedes radiator fan always on? Discover top symptoms & solutions. (Approx. Its as if the fan is running full blast like the car thinks its overheating however the engine cannot be May 14, 2025 · Discover why your Radiator Fan keeps running when car is Off and learn how to fix common issues like faulty sensors, relays, and coolant problems. 8juz1, ceauy, rhvud, rumdi, nn8w, lzrdcw, q5m7c, vdcr, qfbahp, hfpr4a,