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gunner
Montreal


Joined: 04 Jul 2014
Posts: 607
Location: Kent


PostPosted: Mon Jul 31, 2017 8:40 am    Post subject: Seat electrics Reply with quote

Jacked up the front of my drivers seat over the weekend to do a small repair on the leather.

All went well until I went to lower it back down. Nothing.

Can they be manually overidden?

Prefer this option to an expensive fix, at least in the short term, as I never move the seat anyway and am still toying with the idea of some completely new seats.
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Chris993C2
Hockenheim


Joined: 09 Mar 2010
Posts: 627
Location: South Bucks


PostPosted: Mon Jul 31, 2017 9:16 am    Post subject: Re: Seat electrics Reply with quote

gunner wrote:
All went well until I went to lower it back down. Nothing.

Do any of the motors work? The connector plug may have fallen out the bottom of the seat...
 
  
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Allan E
Trainee


Joined: 17 Jun 2017
Posts: 86
Location: North-East England


PostPosted: Mon Jul 31, 2017 9:33 am    Post subject: Re: Seat electrics Reply with quote

gunner wrote:
Jacked up the front of my drivers seat over the weekend to do a small repair on the leather.

All went well until I went to lower it back down. Nothing.

Can they be manually overidden?

Prefer this option to an expensive fix, at least in the short term, as I never move the seat anyway and am still toying with the idea of some completely new seats.


You do not state whether the drivers seat is electrically adjustable fore and aft but if is and that is not working it is now an mot failure. If there is means to adjust, it must work. If you have a vehicle where the seats are fixed permanently without adjustment they would pass.
As stated you most probably have disturbed a connector, good luck.
 
  
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gunner
Montreal


Joined: 04 Jul 2014
Posts: 607
Location: Kent


PostPosted: Mon Jul 31, 2017 10:53 am    Post subject: Reply with quote

Motor for the front of the seat not moving in either direction. Rear still working as normal.

Fore/aft is manual.
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Chris993C2
Hockenheim


Joined: 09 Mar 2010
Posts: 627
Location: South Bucks


PostPosted: Mon Jul 31, 2017 11:22 am    Post subject: Reply with quote

gunner wrote:
Motor for the front of the seat not moving in either direction. Rear still working as normal.

I would still check that the connector is fully mated - there are no locking tabs on the plug, so it's just friction fit (rather like those on the back of the electric window switches)
 
  
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gunner
Montreal


Joined: 04 Jul 2014
Posts: 607
Location: Kent


PostPosted: Mon Jul 31, 2017 12:45 pm    Post subject: Reply with quote

Will try the connector again tonight.

If it fails to fix it, can the motor be manually shifted?
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kerb scraper
Spa-Francorchamps


Joined: 25 May 2012
Posts: 369
Location: Hertfordshire

1997 Porsche 993 Carrera 4

PostPosted: Mon Jul 31, 2017 2:40 pm    Post subject: Reply with quote

Could it be the switch? Apparently they are known to be troublesome:

https://rennlist.com/forums/993-forum/578837-power-seat-switches-how-to-remove.html

Difficult (some say impossible) to dismantle but there are claims spraying with contact cleaner is effective.
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gunner
Montreal


Joined: 04 Jul 2014
Posts: 607
Location: Kent


PostPosted: Mon Jul 31, 2017 3:03 pm    Post subject: Reply with quote

Yes, I'd done a bit of internet searching and found the info on switches, thanks.

What I need to know is whether I can move it manually if the switch can't be sorted.
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Kat1
Silverstone


Joined: 04 Nov 2010
Posts: 125
Location: Ely, Cambs


PostPosted: Mon Jul 31, 2017 3:18 pm    Post subject: Reply with quote

First remove the seat by undoing the six hex cap screws in the seat runners - two at the back and one at the front each side.

Beware these are very soft so it is important to use the correct sized hex key and to keep it vertically aligned.

You can then unplug the electrical connector to the motor and remove the seat from the car.

To raise or lower the seat without the motor - disconnect the drive cables from the seat motor.

These are flex cables with 3mm approx square ends reminiscent of 1970's speedo drive cables.

By rotating the inner cable you can the raise or lower one side of the seat.

I used a small battery drill which I set the slip clutch ( torque sensor) on low so that when it "bottomed out" no damage would be caused.

This is then how to alter the "seat height" manually - however it is 993 so everything must work even it is never used.

So while the seat is out it is worth checking the continuity from the seat switches to help determine where the fault lies.
 
  
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gunner
Montreal


Joined: 04 Jul 2014
Posts: 607
Location: Kent


PostPosted: Tue Aug 01, 2017 9:14 am    Post subject: Reply with quote

Thanks, that's helpful.
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Fulla
Hockenheim


Joined: 08 Feb 2008
Posts: 670
Location: Ealing


PostPosted: Tue Aug 01, 2017 4:35 pm    Post subject: Reply with quote

I had this problem a few years back. Expected an expensive fix...when I had the time and investigated it further it turned out to be a connector that had come off.
Fingers crossed yours is the same issue.
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