passenger seat control module fix
Thread Starter
MBWorld Fanatic!
Joined: Nov 2003
Posts: 1,067
Likes: 5
From: MILFORD,CT
E36M3 race car/Ferrari F355 GTS/1973 Mini 1275GT/Fiat Abarth/ML63/SLK55
passenger seat control module fix
hey guys my passenger seat control module is defective (battery drain) so i'm driving around with it unplugged.
anyone know how to get this fixed (save bellying up to the mb parts counter). which unit is it that need replacing? i think there's 3 under the seat. i'm fairly adept with a solder iron can this be repaired?
any insight will be much appreciated.
anyone know how to get this fixed (save bellying up to the mb parts counter). which unit is it that need replacing? i think there's 3 under the seat. i'm fairly adept with a solder iron can this be repaired?
any insight will be much appreciated.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 1,289
Likes: 3
From: OC
C32
If mine ever goes out I will sure try to fix it. First place to start is to pull the box that is causing the battery drain. Then remove the same box on the opposite side. With an OHM meter compare the inputs on each box to ground. You may find one of the inputs shorted on the bad box. You will then have to open the bad box and hopefully it is a shorted capacitor that can be easily replaced. It might also be a proprietary chip that is shorted and then we are out of luck on repairing it.
If someone wants to send me a bad box I will take a look at it.
If someone wants to send me a bad box I will take a look at it.
MBWorld Fanatic!
Joined: Feb 2006
Posts: 6,213
Likes: 8
LET C32 2002
hey guys my passenger seat control module is defective (battery drain) so i'm driving around with it unplugged.
anyone know how to get this fixed (save bellying up to the mb parts counter). which unit is it that need replacing? i think there's 3 under the seat. i'm fairly adept with a solder iron can this be repaired?
any insight will be much appreciated.
anyone know how to get this fixed (save bellying up to the mb parts counter). which unit is it that need replacing? i think there's 3 under the seat. i'm fairly adept with a solder iron can this be repaired?
any insight will be much appreciated.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 1,289
Likes: 3
From: OC
C32
Thread Starter
MBWorld Fanatic!
Joined: Nov 2003
Posts: 1,067
Likes: 5
From: MILFORD,CT
E36M3 race car/Ferrari F355 GTS/1973 Mini 1275GT/Fiat Abarth/ML63/SLK55
If mine ever goes out I will sure try to fix it. First place to start is to pull the box that is causing the battery drain. Then remove the same box on the opposite side. With an OHM meter compare the inputs on each box to ground. You may find one of the inputs shorted on the bad box. You will then have to open the bad box and hopefully it is a shorted capacitor that can be easily replaced. It might also be a proprietary chip that is shorted and then we are out of luck on repairing it.
If someone wants to send me a bad box I will take a look at it.
If someone wants to send me a bad box I will take a look at it.
Junior Member
Joined: Feb 2005
Posts: 59
Likes: 0
C32
passenger seat control module fix
I too just had this same problem this week. I took out my battery and had it checked, and it did not needed to be replaced. So I took the car into the dealer and they said it was the drivers side seat controll module. They replaced it and the passenger side (under waranty) and sent me on my way.
Trending Topics
Member
Joined: Sep 2006
Posts: 111
Likes: 0
From: Chicago - Museum Campus
'10 GLK 350 Capri Blue/Black
Same thing happened here. Battery is less than a year old. It drained last week before I left to go to a Christmas party. MB Roadside had me back running within an hour.
I told him I thought it was the seat control module and he said that's exactly what the problem was. He asked if I found that on the internet, so good job guys.
I went to start it today after not driving yesterday and it's as dead as a doornail. The doorman's battery jump pack doesn't have enough power to start it. It starts up the accessories, but the engine won't turn over, so I'm waiting for MB Roadside again as we speak.
I made an appointment for Monday morning, and it looks like my extended warranty (Total Protection Supreme from Prizm) should cover it.
Did anybody figure out how to disconnect the module yet?
I told him I thought it was the seat control module and he said that's exactly what the problem was. He asked if I found that on the internet, so good job guys.
I went to start it today after not driving yesterday and it's as dead as a doornail. The doorman's battery jump pack doesn't have enough power to start it. It starts up the accessories, but the engine won't turn over, so I'm waiting for MB Roadside again as we speak.
I made an appointment for Monday morning, and it looks like my extended warranty (Total Protection Supreme from Prizm) should cover it.
Did anybody figure out how to disconnect the module yet?
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Thread Starter
MBWorld Fanatic!
Joined: Nov 2003
Posts: 1,067
Likes: 5
From: MILFORD,CT
E36M3 race car/Ferrari F355 GTS/1973 Mini 1275GT/Fiat Abarth/ML63/SLK55
Same thing happened here. Battery is less than a year old. It drained last week before I left to go to a Christmas party. MB Roadside had me back running within an hour.
I told him I thought it was the seat control module and he said that's exactly what the problem was. He asked if I found that on the internet, so good job guys.
I went to start it today after not driving yesterday and it's as dead as a doornail. The doorman's battery jump pack doesn't have enough power to start it. It starts up the accessories, but the engine won't turn over, so I'm waiting for MB Roadside again as we speak.
I made an appointment for Monday morning, and it looks like my extended warranty (Total Protection Supreme from Prizm) should cover it.
Did anybody figure out how to disconnect the module yet?
I told him I thought it was the seat control module and he said that's exactly what the problem was. He asked if I found that on the internet, so good job guys.
I went to start it today after not driving yesterday and it's as dead as a doornail. The doorman's battery jump pack doesn't have enough power to start it. It starts up the accessories, but the engine won't turn over, so I'm waiting for MB Roadside again as we speak.
I made an appointment for Monday morning, and it looks like my extended warranty (Total Protection Supreme from Prizm) should cover it.
Did anybody figure out how to disconnect the module yet?
Member
Joined: Aug 2006
Posts: 177
Likes: 0
From: NY
MB C32 AMG
it would be a good idea to install a seperate cut-off switch for the seats. So when you get out off the car you just turn on the switch to cut the power tot the seats. I think when I install my new control modules I am still going to unplug the seat just because I don't trust it anymore. I don't want to be somewhere in the boondocks and have modules drain my battery. 
MBWorld Fanatic!
Joined: Aug 2005
Posts: 3,466
Likes: 10
From: Southern Cali (Ontario)
I hope we can find a cheap fix to this common problem..
I have both seats unplugged due to the same issue.
I know I have seen the part numbers around this board.. but from what I heard they are not very cheap.
We need somebody that has a good discount with MB dealer to come to the rescue and have a group buy.
Or maybe somebody that can find the actual problem to the module and we can take apart and have the part fixed.
Brandon (Code3): Maybe this can be a small project to add to our list?
I have both seats unplugged due to the same issue.
I know I have seen the part numbers around this board.. but from what I heard they are not very cheap.
We need somebody that has a good discount with MB dealer to come to the rescue and have a group buy.
Or maybe somebody that can find the actual problem to the module and we can take apart and have the part fixed.
Brandon (Code3): Maybe this can be a small project to add to our list?
Member
Joined: Sep 2006
Posts: 111
Likes: 0
From: Chicago - Museum Campus
'10 GLK 350 Capri Blue/Black
I just got back from a 'recharge' drive and I unhooked the plugs on the seats as well.
Have to pick the girlfriend up from the airport tomorrow morning so I'm really hoping this works.
Have to pick the girlfriend up from the airport tomorrow morning so I'm really hoping this works.
MBWorld Fanatic!
Joined: Jan 2004
Posts: 5,939
Likes: 178
From: Seattle WA
99 E320
MBWorld Fanatic!
Joined: Aug 2005
Posts: 3,466
Likes: 10
From: Southern Cali (Ontario)
we need to find somebody that works for MB or works at a dealer.
$220 per module is way too expensive for this car at this point.
maybe.. we can use from another C class? here in So Cal, there are tons of "pick your parts" places.
I wonder if the same part will apply?
$220 per module is way too expensive for this car at this point.
maybe.. we can use from another C class? here in So Cal, there are tons of "pick your parts" places.
I wonder if the same part will apply?
MBWorld Fanatic!
Joined: Feb 2006
Posts: 6,213
Likes: 8
LET C32 2002
I bought a new uptima redtop a few days ago and its beens acting like the charge is going and 3am this morning I had to jump car and decided to unplug both seat controls hoping thats it...car started this afternoon fast so left it running for a little while to charge battery more. If its the problem then doing warranty work first to second week of Januaray 2008.
Super Member
Joined: Apr 2007
Posts: 543
Likes: 0
From: South FLA
C32 AMG
Sonofawitch! The dealer managed to get $700 out of me on the last day of the year!! Friggin' seat control module drained my battery. Even with the repair, SA told me they still were registering a draw on the battery. Two hours of diagnosis later (so they say) I was told the command is to fault 
. The SA was nice enough to quote me a new unit at about $3,500
. The SA was nice enough to quote me a new unit at about $3,500
Newbie
Joined: Jan 2008
Posts: 3
Likes: 0
MERCEDES 500 SEC , C32 AMG , S-TYPE JAGUAR
Passenger Seat Drain
Cant Believe So Many People Have The Same Fault Including Me Too! Will Be At The Mb Dealer Doorstep With My Extended Warranty!!!
I Have A Problem With My Shocks, Heated Driver Seat, Parking Sensors , And Today Discovered A Secondary Air Injector Fault.
I Have A Problem With My Shocks, Heated Driver Seat, Parking Sensors , And Today Discovered A Secondary Air Injector Fault.
Member
Joined: Aug 2006
Posts: 177
Likes: 0
From: NY
MB C32 AMG
I think it's the big flat one in the middle and the little one to it's immediate right. As far as which seat is concerned you can try leaving one seat unpluged or take it to the dealer and they'll tell you right away (most likely it's both)
MBWorld Fanatic!
Joined: Mar 2007
Posts: 1,948
Likes: 3
From: Houston, TX
C32/C55 AMG
I just had this problem tonight. Unlocked the car and I noticed that the interior lights would not come on. I was able to jump the battery and start the car, so I'm thinking it's the seat control module. Now I have a list of things wrong with my car. Thank God for the warranty.
Alarm is not working, power drain, heated seat bottoms not working, heater is not working, ac control unit randomly switches from auto, and noise coming from the pulley. My hood shocks went out and my center console leather gets sticky when it gets wet, not sure if the warranty well cover those problems.
Alarm is not working, power drain, heated seat bottoms not working, heater is not working, ac control unit randomly switches from auto, and noise coming from the pulley. My hood shocks went out and my center console leather gets sticky when it gets wet, not sure if the warranty well cover those problems.
