Passenger Seat no workie
Thread Starter
Newbie
Joined: Jun 2007
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From: Campbell County, Virginia
1999 E300TD, 1987 300SDL, 1995 Z71 Chevy 4x4
Passenger Seat no workie
I just bought a '99 E300TD and runs great; all electricals checked when I bought it but now none of the front passenger seat controls work. I checked all the fuses in 3 locations.
Any ideas out there?
Any ideas out there?
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Joined: Mar 2006
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From: West Virginia
2001 E320 RWD - Brilliant Silver/Ash: 100,000+
Congratulations on your car neighbor!
It sounds like you probably found all of the fuse boxes and ruled those out. What about the switches on the door and/or the motor(s)? I think it unusual for all to fail at the same time, but maybe there is sone sort of junction that could be bad? There have been reports of front seats not moving forward and back; at least one was discovered to have had a coin lodged in the track. Good Luck.
It sounds like you probably found all of the fuse boxes and ruled those out. What about the switches on the door and/or the motor(s)? I think it unusual for all to fail at the same time, but maybe there is sone sort of junction that could be bad? There have been reports of front seats not moving forward and back; at least one was discovered to have had a coin lodged in the track. Good Luck.
Last edited by Musikmann; Jul 1, 2007 at 08:17 AM.
Thread Starter
Newbie
Joined: Jun 2007
Posts: 6
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From: Campbell County, Virginia
1999 E300TD, 1987 300SDL, 1995 Z71 Chevy 4x4
Thanks for the ideas. I did dis-connect and re-connect all plugs and actually when you operate the switches you can't hear the motors kick in so I've drawn the conclusion that its something electrical between the switches and the motors. I assume there's a 'brain' somewhere that controls wattage, etc to the motors. I haven't had it long enough to start losing pennies, etc. but when my kids were small that was definitely a problem!
I have to take it in this week to activate a warranty so I guess I'll get the ASE man to figure it out.
I have to take it in this week to activate a warranty so I guess I'll get the ASE man to figure it out.
Newbie
Joined: Jul 2007
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seats not working
i had one headrest that didn't move (i think pass side), i changed the battery for maintenence reasons and voila!, the hadrest worked, maybe disconnect the battery for w hile (make sure you have radio security code) - good luck ( mine was 1997 e420)
Thread Starter
Newbie
Joined: Jun 2007
Posts: 6
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From: Campbell County, Virginia
1999 E300TD, 1987 300SDL, 1995 Z71 Chevy 4x4
That's easy enough; I'll try it tonight. A friend warned me about these "computers on 4 wheels" so I guess I'll learn the hard way.
Super Member
Joined: Nov 2004
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'98 E320 4Matic, '85 380SL
Does the seat move when you press any of the memory buttons? (Set the current position to #1 so in case the seat moves when you test the other two, you can bring it back where it was.) This will help isolate the problem.
With use, the contact pins in the seat adjustment switch eventually break continuity with the circuit board. If the memory buttons work, you might be able to fix the problem by taking the switch out and putting a few dabs of solder around the contact pins.
With use, the contact pins in the seat adjustment switch eventually break continuity with the circuit board. If the memory buttons work, you might be able to fix the problem by taking the switch out and putting a few dabs of solder around the contact pins.
Thread Starter
Newbie
Joined: Jun 2007
Posts: 6
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From: Campbell County, Virginia
1999 E300TD, 1987 300SDL, 1995 Z71 Chevy 4x4
Thanks for the ideas; here's the current situation. Dis-connected the battery and re-connected - no change. Tried all the memory buttons - nothing.
As a reminder, all the functions were working when I bought it about 3 weeks ago. Now, passenger seat does nothing (but sit there annoying me!).
Does anybody know about the wiring between the door and the seat motors? Are there any more connectors/harness that could have come loose?
As a reminder, all the functions were working when I bought it about 3 weeks ago. Now, passenger seat does nothing (but sit there annoying me!).
Does anybody know about the wiring between the door and the seat motors? Are there any more connectors/harness that could have come loose?
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Newbie
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I had this problem while the car was under warranty. Somewhere in the car there's a computer that manages the seat position memory functions. When it goes off, for some reason the passenger seat is immoveable. I wish I could tell you where this box is located. It was replaced under warranty, and I never thought about it again.
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Thread Starter
Newbie
Joined: Jun 2007
Posts: 6
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From: Campbell County, Virginia
1999 E300TD, 1987 300SDL, 1995 Z71 Chevy 4x4
For everyone viewing this thread - I have the car at an ASE mechanic now to activate a new warranty and he's looking at the seat problem. I'll post something here when it's fixed.
Thread Starter
Newbie
Joined: Jun 2007
Posts: 6
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From: Campbell County, Virginia
1999 E300TD, 1987 300SDL, 1995 Z71 Chevy 4x4
Fixed Passenger Seat
The non-working passenger seat has been fixed. It was nothing more than one loose connection inside the door panel. So if you have this kind of problem be patient - it may be very simple. I could have spent hundreds on a new "control module" which was the original diagnosis.
