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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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Well my lumbar support is not working, both sides, and the

Customer Question

Well my lumbar support is not working, both sides, and the passenger door lock does not go up or down when I press the lock/unlock lever on the dash. Other door locks, trunk lock closer is ok, and door closers are ok. I have a 1997 S420 with 111K miles on it. Thank you.
JA: Is this your first time dealing with this issue?
Customer: Yes, it worked fine a short while ago.
JA: Are you fixing your S420 yourself? What have you tried so far?
Customer: I will try and fix myself. I have done nothing yet.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No I think that is it.
Submitted: 7 days ago.
Category: Mercedes
Expert:  Marty replied 7 days ago.

Hi, my name is***** you tried resetting the PSE module?

Customer: replied 7 days ago.
No i have not. I just replaced the battery recently too.
Customer: replied 7 days ago.
Let me look that up tonight on my s420 service manual cd
Expert:  Marty replied 6 days ago.

Just disconnect the negative battery cable for a few minutes then reconnect it and see if the door works. Dial the lumbars down to zero for now.

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