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Subject: "Bad drivers seat module? " Previous topic | Next topic
HibsSat Nov-03-12 10:47 PM
Member since Oct 27th 2012
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"Bad drivers seat module? "


          

Just bought a 1997 Lincoln Mark VIII.... everything on the car works great EXCEPT the power drivers seat and both power mirrors. The lumbar works, but NO movement at all in the power seat. Hit the switch in any direction and nothing, even when NOT sitting in the seat. No clicking or no sound of motor engagement.

All fuses good, including the fuse under the hood for the power seat and fuse #35 in the instrumental fuse panel.

Took a test light to the power seat switch, no power to it what so ever. Went to the passenger side, and one wire does have power going to that, so I know I've got an issue somewhere on the drivers side....

Did a search on here, and found out about the fuse on the Drivers Seat Module. Pulled the bottom seat cushion up, checked the fuse, it is good. Pulled the module out, popped open the cover, everything looks OK in there, as in no burnt items or anything as far as I can tell. Put module back in, hooked everything all back up nice and tight. Still nothing.

Tried disconnecting both leads off the battery and waiting 5 minutes, then reconnecting (as someone else said that fixed their issue). Made no difference.

I'm guessing the only thing left is to replace the drivers seat module?

  

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Replies to this topic
Subject Author Message Date ID
RE: Bad drivers seat module?
Nov 06th 2012
1
RE: Bad drivers seat module?
Nov 07th 2012
2
      RE: Bad drivers seat module?
Nov 07th 2012
3
           RE: Bad drivers seat module?
Nov 08th 2012
4
                RE: Bad drivers seat module?
Nov 08th 2012
5
                RE: Bad drivers seat module?
Nov 08th 2012
6
                     RE: Bad drivers seat module?
Nov 09th 2012
7
                          RE: Bad drivers seat module?
Nov 09th 2012
8

FlagracerTue Nov-06-12 01:59 PM
Member since Aug 31st 2007
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#1. "RE: Bad drivers seat module? "
In response to Reply # 0


          

I am not sure after reading this, did you re-seat all the power harnesses under your seat? There are 3 connections for the main harness plus I think a couple on the seat itself.

formerly ASE certified, still skin my knuckles
98 Mark VIII Silver

  

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HibsWed Nov-07-12 03:45 PM
Member since Oct 27th 2012
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#2. "RE: Bad drivers seat module? "
In response to Reply # 1


          

Yes everything was/is connected tight.

I ordered a new module off Ebay, hopefully that fixes it. We'll see tomorrow.....

  

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HibsWed Nov-07-12 08:53 PM
Member since Oct 27th 2012
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#3. "RE: Bad drivers seat module? "
In response to Reply # 2


          

Well swapped it out with a module that I bought off ebay. Still same problem. No mirrors (either side) and no power seat in any position. Lunbar and heat both work though. I have power to the fuse in the module. No power to the "power seat switch"....


Ideas????

  

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FlagracerThu Nov-08-12 02:46 PM
Member since Aug 31st 2007
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#4. "RE: Bad drivers seat module? "
In response to Reply # 3


          

I don't have a manual, the only other idea I can suggest is unplug and replug all those large fuses under the hood to make sure they all have a good connection.

formerly ASE certified, still skin my knuckles
98 Mark VIII Silver

  

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The Haverstraw ManThu Nov-08-12 11:12 PM
Member since Oct 05th 2003
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#5. "RE: Bad drivers seat module? "
In response to Reply # 4


          

One place to check is the wires where the drivers side door opens near the hinges.

  

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HibsThu Nov-08-12 11:31 PM
Member since Oct 27th 2012
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#6. "RE: Bad drivers seat module? "
In response to Reply # 4


          

I've been told there's another module inside the door. Goes to the seat memory switch? and I guess wrapped up in the whole operation of it. I'm going to check there next.

  

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LownslowlscFri Nov-09-12 01:39 PM
Member since Aug 11th 2007
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#7. "RE: Bad drivers seat module? "
In response to Reply # 6
Fri Nov-09-12 01:45 PM by sbcaprice305

          

Thats the keyless entry module. Not sure what role it plays in regards to the seat movement though.

Sounds silly, but have you messed with the memory setting switch on the door and the "Easy Entry" setting via the messege center?

  

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rrischFri Nov-09-12 11:17 PM
Member since Nov 27th 2008
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#8. "RE: Bad drivers seat module? "
In response to Reply # 7


          

I pulled out a wiring diagram for 1998 Lincoln "Power". I printed this out 2-3 years ago on the web somewhere??? Anyway -- according to the diagram -- Fuse 19 (30A) from the engine compartment fuse box runs a red wire to drivers seat module with 2 junctions prior to the seat module. First it splits off to fuse 35 in the dash fuse panel and then the second splits to the left/drivers seat lumbar switch. So if the lumbar switch works then you probably have a break in the wiring between the lumbar switch and the seat module. You could follow the switch wiring to the junction and then check continuity from there to the module, then repairing, OR just run a new wire from the lumbar switch to the module.

Two months ago my brother-in-law had a broken power wire in his trailer hook-up prior to the plugin on the bumper, and there was no indication from inspecting the wiring that it was broken, where it was/had broken.

  

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