davidnorfolk
New Member
- Joined
- Jun 19, 2023
- Messages
- 8
- Reaction score
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- Your Mercedes
- C220d (2012 2.1 diesel AMG sport premium)
Hi,
This originally happened back in June then started working again for last few months but has gone again last week for a day now for last 3 days.
Out of the blue, lost power to the passenger side door windows (front & rear), plus wing mirror, plus locks front and rear.
This means I get dashboard errors about pre-safe belt tensioner, indicator rapid flashing like the bulb has gone and the real problem no central locking, or passenger side windows.
When the door is open the courtesy light is on, so I’m assuming some power there.
Today I changed the passenger front door control module (used part) and it made no difference. I also changed the main engine bay battery.
I’ve checked every fuse in the engine bay compartment (not found any secondary fuse box), but the fact it has stopped working before then started again makes me assume it’s not a fuse.
I took the door card off and ran 12v to the window motor (as the window was in the open position) so the car is secure and rain proof, also proved the motor works.
SO, what should I be checking next?
Would the driver side door control module affect it? As even the passenger side window switches are not working.
I cannot work out how to expose the door wiring as the concertina bellow are very firmly in place! But again, both front and rear doors are affected and I assume the wiring doesn’t go into the front door only to come back out to the rear?
Is there something else central or drivers side that could affect it?
Car is a 2012 C220 CDI estate (W204) UK model (RHD).
This originally happened back in June then started working again for last few months but has gone again last week for a day now for last 3 days.
Out of the blue, lost power to the passenger side door windows (front & rear), plus wing mirror, plus locks front and rear.
This means I get dashboard errors about pre-safe belt tensioner, indicator rapid flashing like the bulb has gone and the real problem no central locking, or passenger side windows.
When the door is open the courtesy light is on, so I’m assuming some power there.
Today I changed the passenger front door control module (used part) and it made no difference. I also changed the main engine bay battery.
I’ve checked every fuse in the engine bay compartment (not found any secondary fuse box), but the fact it has stopped working before then started again makes me assume it’s not a fuse.
I took the door card off and ran 12v to the window motor (as the window was in the open position) so the car is secure and rain proof, also proved the motor works.
SO, what should I be checking next?
Would the driver side door control module affect it? As even the passenger side window switches are not working.
I cannot work out how to expose the door wiring as the concertina bellow are very firmly in place! But again, both front and rear doors are affected and I assume the wiring doesn’t go into the front door only to come back out to the rear?
Is there something else central or drivers side that could affect it?
Car is a 2012 C220 CDI estate (W204) UK model (RHD).
