C320 seat control module need help
Thread Starter
Newbie
Joined: Dec 2007
Posts: 5
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2004 C320 coupe
C320 seat control module need help
My 2004 C320 driver side seat control module went bad few months back. Got a replacement SCM used one, same exact model. Put it in today and nothing happens. Still displaying 1 Malfunction, SRS problem....
Can anyone tell me where I can locate the fuse, if there is one particular for the seat control?
Or the part I bought it is defective, and I may have to return it?
Or is there a resetting procedure to make it working again. The used part looks like a good one to me, but don't know how to check it out if the part (used one) iteslf is defective or not.
I am stuck, literally I cannot move-adjust-tilt----.
Appreciate everyone for the prompt reply.
Sincerely, Lasers
Can anyone tell me where I can locate the fuse, if there is one particular for the seat control?
Or the part I bought it is defective, and I may have to return it?
Or is there a resetting procedure to make it working again. The used part looks like a good one to me, but don't know how to check it out if the part (used one) iteslf is defective or not.
I am stuck, literally I cannot move-adjust-tilt----.
Appreciate everyone for the prompt reply.
Sincerely, Lasers
Moderator Alumni
Joined: Apr 2006
Posts: 3,255
Likes: 22
From: Seattle
w203 m112
I dont think it was the module causing issues.... These dang SRS issues are hard to diagnose, but for the most part seat control modules are replaced in the event that the power seats are draining batteries.
The SRS light has been known to come up when the weight sensor in the passenger side seat malfunctions.... I have no idea how to get around this one other than replacing the sensor, but the sensor is expensive and you have to pull out a lot of stuff to get to it... Not fun.
The SRS light has been known to come up when the weight sensor in the passenger side seat malfunctions.... I have no idea how to get around this one other than replacing the sensor, but the sensor is expensive and you have to pull out a lot of stuff to get to it... Not fun.
Newbie
Joined: Jan 2015
Posts: 4
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C320 station wagon
SCM for 2002 C320
Newbie here 
Seat control module went bad on both seats draining the battery.
Is this something I can do myself to replace it?
Any recommended link/sites for parts?
Thanks!
Seat control module went bad on both seats draining the battery.
Is this something I can do myself to replace it?
Any recommended link/sites for parts?
Thanks!
Last edited by Sherminator; Feb 5, 2015 at 09:06 AM. Reason: Need to add info
Super Moderator
Joined: Mar 2007
Posts: 5,295
Likes: 22
From: VA
THE C350
If you search around on here you can find a DIY guide to fixing the issue if you can solder and know basic wiring it will be very easy. If you don't it will take some time but still won't take to long and will be a good learning experience. The idea is very simple just using switched power instead of constant so if the key is off the seats are off key on seats on.
