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Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53154
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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My 2003 c320 driver seat will not adjust. I changes the

Customer Question

my 2003 c320 driver seat will not adjust. I changes the switch on the door panel , no luck. I check fues. all but one fuse is powered. the one in the truck with no power is not blown. The fuse is a 40.
Submitted: 1 year ago.
Category: Mercedes
Expert:  Marty replied 1 year ago.

Hi, my name is***** you please post the last 8 digits of your vin number?

Customer: replied 1 year ago.
3E010206
Expert:  Marty replied 1 year ago.

Ok, are all of the switches for the seat not working?

Customer: replied 1 year ago.
I actually purchase a switch, but it did not fix the problem. The Mirror can be operated from the memory selections, bu not the seat. The passenger seat works find
Expert:  Marty replied 1 year ago.

It sounds like you may have a bad seat module under the seat or the module is disconnected. I'd inspect all of the plugs to the seat module. Also check fuse 27 in the interior fuse box and see if is blown or missing. If the fuse is good and the module is plugged in I would try a new module.

Let me know if you have any questions.

Customer: replied 1 year ago.
It does not sound like a relay to you?
Expert:  Marty replied 1 year ago.

There is no relay in the system.

Expert:  Marty replied 1 year ago.

The seat module under the seat is basically the relay.

Customer: replied 1 year ago.
I found a cheap module on ebay. They said it may need to be programmed by a dealer. Any thoughts?
Expert:  Marty replied 1 year ago.

It will not need programming as long as the part numbers match.

Customer: replied 1 year ago.
What is the part number
Expert:  Marty replied 1 year ago.

The part number in the catalog is 211 870 46 26.

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