My 2008 w209 keeps having to be jumped off after setting a couple of days.
#1
My 2008 w209 keeps having to be jumped off after setting a couple of days.
Alternator checks out fine , brand new battery, no lights on that I can see. Any suggestions on what might be happening? Or where else I might look?
#2
MBworld Guru
First of all, welcome to the forum!
This is likely a component that has failed and is drawing current when it should not. Common culprits are the power seat controllers and the fan on the humidity sensor on the overhead control panel. If you have the tools and skills, I recommend tracking it down with an ammeter.
This is likely a component that has failed and is drawing current when it should not. Common culprits are the power seat controllers and the fan on the humidity sensor on the overhead control panel. If you have the tools and skills, I recommend tracking it down with an ammeter.
#3
Fan on the overhead control panel not sure what that is? Oh thank you this is my first time posting. I usually find solutions in other threads a
Last edited by sloroller63; 06-20-2017 at 11:18 PM.
#4
Senior Member
As in, there's a humidity sensor for the climate control system located behind one of the vented covers in the overhead control unit, near the interior light switch. But in order for the humidity to be correctly measured, it uses a fan to circulate interior air around the sensor.
#6
MBworld Guru
If it is the fan for the humidity sensor in the OCP, you can often hear it still running after shutting the car off. Listen carefully to it - it's behind the tiny grille on the OCP.