Th3DooM
10+ Year Contributor
- 301
- 3
- Jan 5, 2011
-
Dresden,
Europe
I drive a 420A GS. My driver's side radiator fan doesn't work. I checked nearly everything that could be related to that issue but haven't found any solution. Fuses, relays, cables, coolant sensor etc. ... when I push the A/C button both fans jump on. That's the only way to cool down the engine when it overheats.
I switched the relays and it still won't work. I tried a jumper wire on the relay terminals, power is present. Checking engine parameters with OBDII shows me that coolant temperatures are real or at least reasonable so the sensors should be okay.
I don't know where to look next. What should I do now?
I switched the relays and it still won't work. I tried a jumper wire on the relay terminals, power is present. Checking engine parameters with OBDII shows me that coolant temperatures are real or at least reasonable so the sensors should be okay.
I don't know where to look next. What should I do now?