2011 E550 Driver side power seats
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Newbie
Joined: Dec 2023
Posts: 2
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E550 2011
2011 E550 Driver side power seats
Out of the blue, the drivers side power seats including front/back, seat tilt, and headrest up/down, and memory 1 , 2, and 3 do nothing. While the passenger side seat is all working fine. Checked all fuses as listed on fuse guide and they are all good. Checked all connectors under the seat, they are connected properly. What might the problem be? Perhaps a relay? Anyone have any idea what to check next? Different motors control different parts of the seat so no way all 3 motors failed at the same time. Any suggestions?
Out Of Control!!
Joined: Apr 2019
Posts: 11,999
Likes: 6,827
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Goofy driver Seat
Out of the blue, the drivers side power seats including front/back, seat tilt, and headrest up/down, and memory 1 , 2, and 3 do nothing. While the passenger side seat is all working fine. Checked all fuses as listed on fuse guide and they are all good. Checked all connectors under the seat, they are connected properly. What might the problem be? Perhaps a relay? Anyone have any idea what to check next? Different motors control different parts of the seat so no way all 3 motors failed at the same time. Any suggestions?
You want to scan your car modules to retrieve live faults.
-1- More than likely your issue is with the DCU control Module not the actual modul under the seat. This one is built well.
-2- Other related issues are poor GND either footwell or seat.... Need to scan to know what grumblings are at play.
Seat are a safety device during accidents. You best interest is to have that working.
Time involved ~ 4Hrs.
Hopefully things pan out well.
Last edited by CaliBenzDriver; Dec 18, 2023 at 07:33 PM.
Thread Starter
Newbie
Joined: Dec 2023
Posts: 2
Likes: 0
E550 2011
Driver seat no longer operates.
You want to scan your car modules to retrieve live faults.
-1- More than likely your issue is with the DCU control Module not the actual modul under the seat. This one is built well.
-2- Other related issues are poor GND either footwell or seat.... Need to scan to know what grumblings are at play.
Seat are a safety device during accidents. You best interest is to have that working.
Time involved ~ 4Hrs.
Hopefully things pan out well.
You want to scan your car modules to retrieve live faults.
-1- More than likely your issue is with the DCU control Module not the actual modul under the seat. This one is built well.
-2- Other related issues are poor GND either footwell or seat.... Need to scan to know what grumblings are at play.
Seat are a safety device during accidents. You best interest is to have that working.
Time involved ~ 4Hrs.
Hopefully things pan out well.
Last edited by rzdave12; Dec 19, 2023 at 12:39 PM.
Out Of Control!!
Joined: Apr 2019
Posts: 11,999
Likes: 6,827
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Where is the DCU control module located in this vehicle?
>> Indide each door in the forward section.
And wouldnt that module control both driver and passenger seats?
>> Each door has it's very own controller .
Is that the unit on the driver door itself?
>> Yes exactly, right there.
I tried googling DCU E 550 but nothing comes up.
>> Once you ise a svanner youll be able to read its part numbers for search.
I am not an automotive expert so I apologize for the rudimentary question.
>> Indide each door in the forward section.
And wouldnt that module control both driver and passenger seats?
>> Each door has it's very own controller .
Is that the unit on the driver door itself?
>> Yes exactly, right there.
I tried googling DCU E 550 but nothing comes up.
>> Once you ise a svanner youll be able to read its part numbers for search.
I am not an automotive expert so I apologize for the rudimentary question.
Parts are cheap, specialized labor is not.
