Help,loud engine fan noise
10-22-2017, 05:19 AM
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2017 S550
Help,loud engine fan noise
My 2017 S550 all of a sudden has this super loud fan noise coming from the engine fan. Sounds like it’s stuck on super high speed. I’ve never heard it before. Literally my s-class sounds like a jet engine or hair dryer. Really really annoying even with windows up. Also not sure if it’s related but at the same time my auto start/stop button doesn’t light up green anymore, nor can you see the icon on the dash. Anybody have similar issues or know what the problem is? I have an appointment to take it in on Monday morning, thanks
09-14-2020, 02:25 PM
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Join Date: Jul 2003
Location: North Scottsdale, AZ
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'71 Pinto
MBUSA released a Service Campaign addressing radiator fan control unit for your model year that may apply, see attachment. Covered at not cost out of warranty, campaigns do not expire have your dealer check VMI to see if your VIN is included.
