hi guys !
i got a glk350 2011
i lost power of my hvac control
fuse #12 not blown
but no power on it
tomorrow im gonna take an eye on power supply beside the battery
the radiator fan always run hi with ignition on.
no codes found !!!
anybody have an idea ?
someone knows where is the ground or anything else know something to help me to fix that ?
thanks !

 

I had a friend where this happened on his 2012 C-Class, he bought a used HVAC control (the dash piece) and swapped it out. It fixed the issue. Not sure this is your problem in particular but its what happened to him.

 

Does radiator fan run all the time? I hope not that can and will lead to sludging of your oil, and ruin your motor if you live where it’s cold, it happened to me. If so change oil now and stop the fan from run on.

 

I seem to be having a similar issue with my 2013 CLS63 AMG.

Did you find what was causing it? How did you fix it?

Thanks