Auto seat not working

1999 JAGUAR XJ8
121,000 MILES • 4.0L • V8 • 2WD • AUTOMATIC
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STEVE CLOUTIER
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  • 13 POSTS
My driver seat does not auto adjust. Steering wheel does fine. I tried on all 3 setting options.
Where can i look to fix?
Jan 11, 2021 at 12:22 PM
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KASEKENNY
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More then likely this is the driver seat control module that has failed. The way to confirm this is to check the voltage coming out of the module when the seat is being moved. If you have no voltage then we need to check voltage coming from the switch. I included the wiring diagram so we can perform this testing.

Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-check-wiring

If you have voltage coming in on the red/white wire when moving the seat forward and none on the white/yellow wire then the module is the issue.

Since this is the auto adjust I am pretty sure that this is the issue so I included the process on how to replace it if this proves out. Let me know what questions you have. Thanks
Jan 12, 2021 at 4:14 PM
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STEVE CLOUTIER
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  • 13 POSTS
Awesome, I am on the right track.
Thanks,
Steve
Jan 19, 2021 at 4:11 AM
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KASEKENNY
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You are welcome. Please let us know what happens when you get it figured out. Thanks for the update.
Jan 19, 2021 at 7:29 PM