Seat Control Module
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C320
Seat Control Module
The seat control module in my 2001 C320 is causing a drain in my battery. I want to investigate this issue by looking at the module itself. If you have instructions on how to remove the module from under the seat, instructions for opening it up, and schematics, please attach them in this thread.
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From: Seattle
w203 m112
Taking the module out is really easy.
IIRC:
Unplug a few plugs that you can see from the under front of the seat(s).
Push a few clips around and pull. It should come out really easily.
As for diagrams of the thing itself. I dunno? You can get a new module shipped to you for about 200 bux.
IIRC:
Unplug a few plugs that you can see from the under front of the seat(s).
Push a few clips around and pull. It should come out really easily.
As for diagrams of the thing itself. I dunno? You can get a new module shipped to you for about 200 bux.
Last edited by TruTaing; Nov 12, 2007 at 09:53 PM.
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From: San Jose, Bay Area
2002 C230 coupe , NOt THE AVATAR!!
The seat control module in my 2001 C320 is causing a drain in my battery. I want to investigate this issue by looking at the module itself. If you have instructions on how to remove the module from under the seat, instructions for opening it up, and schematics, please attach them in this thread.
but in the end my SA trick the dealer had my module replaced for free even my car is out of warrenty
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2001 c320 - 2002 ml55 - 2011 c300 - 2014 slk350 - 2015 cla45
...
if you are interested... i have a new drivers seat control module... i found the recipt recently and i purchased it from the dealer for 300 something...
i purchased it b/c of seat problems i was having... but it ended up being a motor....
contact me if you interested
-carino
i purchased it b/c of seat problems i was having... but it ended up being a motor....
contact me if you interested
-carino
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Joined: Jul 2007
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From: Glencoe, Illinois
2002 C320 Sedan
The passenger seat on my 2002 C320 does not travel back more than half way. I have looked for jams in the track and have found nothing out of the ordinary. Can someone tell me if this can also be a control module problem?
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2001 c320 - 2002 ml55 - 2011 c300 - 2014 slk350 - 2015 cla45
does the seat move in any other direction? this was the same problem with my drivers seat..... it would move in all other directions but not back... it ended up being the motor
Super Member
Joined: Jul 2004
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2001 c320 - 2002 ml55 - 2011 c300 - 2014 slk350 - 2015 cla45
well.. like i stated before. my seat would not move back at all. operational in all directions except reverse. i initially thought that it was the control module and purchased one. the module did not correct my problem. i took my car to the dealer and they replaced a seat motor that was dedicated to reverse.
i dont know what exactly in the faulty motor would cause this... besides the plan fact that the motor went bad....
Last edited by ML55CLA45; Nov 14, 2007 at 10:03 AM.
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2001 c320 - 2002 ml55 - 2011 c300 - 2014 slk350 - 2015 cla45
sounds to me that you need a new module. there might be a new chip/ic but i dont know how you would just change it specifically...
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Joined: Aug 2006
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From: St. Pete Beach FL
2023 C300w/AMG package
Taking the module out is really easy.
IIRC:
Unplug a few plugs that you can see from the under front of the seat(s).
Push a few clips around and pull. It should come out really easily.
As for diagrams of the thing itself. I dunno? You can get a new module shipped to you for about 200 bux.
IIRC:
Unplug a few plugs that you can see from the under front of the seat(s).
Push a few clips around and pull. It should come out really easily.
As for diagrams of the thing itself. I dunno? You can get a new module shipped to you for about 200 bux.
I’m having battery drainage problems too. I just unplugged the leads to the modules in both seats and recharged my NEW BATTERY. However I’m confused here, when the key is out of the ignition there is NO POWER to the seats. So how can the controllers drain the battery? Also I am trying to verify if you have to change both or just one. I wanted to start with the passenger side and see if this solves the problem. Does anyone KNOW FOR SURE if you have to change BOTH?
Respectfully
Last edited by johndddd; Jan 13, 2008 at 02:49 PM.
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From: Vancouver, BC
c320
Hmm, my battery has been draining too. I unhooked the seats but it still happens..My mechanic is pulling his hair out trying to find the cause of the drain.
All I can think of is I think this problem started after I tried to give someone a jump. I've done lots of reading on this problem but..Any ideas?
thanks.
All I can think of is I think this problem started after I tried to give someone a jump. I've done lots of reading on this problem but..Any ideas?
thanks.
Member
Joined: Aug 2006
Posts: 176
Likes: 1
From: St. Pete Beach FL
2023 C300w/AMG package
Hmm, my battery has been draining too. I unhooked the seats but it still happens..My mechanic is pulling his hair out trying to find the cause of the drain.
All I can think of is I think this problem started after I tried to give someone a jump. I've done lots of reading on this problem but..Any ideas?
thanks.
All I can think of is I think this problem started after I tried to give someone a jump. I've done lots of reading on this problem but..Any ideas?
thanks.
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Joined: Apr 2007
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2001 C240, 2000 S430, 2002 ML320
Member
Joined: Aug 2006
Posts: 176
Likes: 1
From: St. Pete Beach FL
2023 C300w/AMG package
It could be anywhere, however the most likely culprit is your seat control modules, these are located under your seats. They control the movement. They are electrical parts and have a life-expectancy. Heat work on electrical parts, when you park your car outside in the summer months it has a toll on electrical parts then they fail. Unplug your seats, there will be a 3 conductor cable I believe its a #14 wire in the front of each seat, then see if your battery drains after 3 days or so. If this solves the drainage probem thats the culprit. In my case it was not. It was an aftermarket sub woofer that was not shutting off. However the seat modules go bad often. There have been several post of members having to change them out @ 1k parts and labor. I have 2 modules NEW IN A SEALED BOX if this is your problem. They sell for 300 each I have them for sale @ 500. Again NEW NEVER OPENED BOX.
Last edited by johndddd; Jan 17, 2008 at 07:21 AM.
Moderator Alumni
Joined: Apr 2006
Posts: 3,255
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From: Seattle
w203 m112
1k in parts + labor is ridiculous :x That is ALOT of labor.It takes almost 20 minutes to swap them out if ya know what you're doing... the process took me about 30 mins to swap mine out. I guess it also took a few 10 minute sessions to unplug fuses and let the car sit for a day though. Also it only took my broken seat module one day to drain my battery....
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
here's my write up on how to replace the control modules.
I recently replaced mine and it solved the drainage issues.
https://mbworld.org/forums/c32-amg-c55-amg-w203/225393-c-class-seat-modules-compatible-c32.html
I recently replaced mine and it solved the drainage issues.
https://mbworld.org/forums/c32-amg-c55-amg-w203/225393-c-class-seat-modules-compatible-c32.html
