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Last week my ‘12 C300 amber coolant light came on on the center of the dash and I noticed the fan started running on high all the time. Temp never went above 85*. After parking the car overnight, I unlocked it the next day and just by unlocking it the fan started running again.
I have searched around & read about the sensors for the coolantand washer fluid being tied together and it could be either one, also read about low coolant level or high A/C pressure causing the fan to run. However, I’ve found nothing on an actual troubleshooting process. I really don’t want to just start throwing parts at it. So if anyone can help with where to start that would be great!
Thanks for the reply. I did check the level and it apprears to be ok. I’m not 100% sure though because the manual is very vague as to what a good level is. All of my other vehicles have a min. & max mark.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
