Volkswagen Mark IV Forum banner

1 - 20 of 60 Posts

·
Registered
Joined
·
488 Posts
Discussion Starter · #1 ·
Hi Folks, thought I would share some info with you all. After a recent Heated Seat Element failure and stupid quotes from the stealers to replace, I thought I would give my DIY skills work out.

I was unable to find a link on here with pics on how to replace step by step, so here's my effort and I hope its useful to you all in case you want to avoid a large bill for some one else to do it for you.

First, disconnect the negative lead from the battery, failure to do this will result in the Airbag light coming on.

Slide the seat full forwards (in my case the Drivers side) and remove the two plastic caps and screws.

Posted Image


Posted Image


Then remove plastic covers.

Posted Image


Slide the seat back fully back.

At the base of the front of the seat in the middle you will now see Two 13mm nuts, remove these, care in needed as these can be very tight.

Carefully slide the seat backwards until the rollers at the back of seat appear out of roller housing.

Tilt the seat from the front so that the wiring can now be seen. Disconnect the green plug (Heated Seat supply) and the yellow plug (Airbag supply) and the plastic retainer plug. Move wiring loom out of the way.

The seat can now be safefully removed from the vehicle.

Posted Image


Posted Image


Posted Image


Remove screws from the side and front of seat and remove plastic trim.

Posted Image


Posted Image


Once the plastic trims have been removed, the plastic strip at the front and back which holds the fabric onto the seat base can now be unclipped.

Posted Image


Once this has been done the fabric can then be peeled back to expose the metal retaining clips on either side of the seat base, unhook these using a pair of long nosed pliars but be extemly careful not to tear the foam cushion. There are three metal rails that need to be unclipped.

Posted Image


http://i59.photobucket.com/albums/g309/dt7734/DSCF0853.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0851.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0852.jpg

Remove fabric from velcro fastening from either side of seat cushion. The fabric can now be fully removed.

http://i59.photobucket.com/albums/g309/dt7734/DSCF0841.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0844.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0839.jpg

Note: The burnt patch where my element had failed and gone open cicuit.

http://i59.photobucket.com/albums/g309/dt7734/DSCF0840.jpg

Tip: Mark around the seat elemnt with a marker pen, this will help when fixing in new element.

The old heated seat element can now be removed from the cushion, be careful not to remove too much cushioning as the Heated element is fixed in place by double sided sticky tape.

The cushion can now be completly taken out so the power plugs can be removed.

http://i59.photobucket.com/albums/g309/dt7734/DSCF0843.jpg

Disconnect the female side of the green connecting plug from base and push through to release, disconnect white plug from seat base (this plug is also the supply for the back seat element in seat.

http://i59.photobucket.com/albums/g309/dt7734/DSCF0846.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0845.jpg

The element can now be completly removed and the new element is now ready for fixing in.

http://i59.photobucket.com/albums/g309/dt7734/DSCF0849.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0848.jpg

Carefully locate the new element in place allowing enough of the element to fix in between gaps in cushion, this will allow enough give in the stretching of the element once the seat is sat in. Remove paper stips to allow element to be glued in place and fix in place.

http://i59.photobucket.com/albums/g309/dt7734/DSCF0850.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0835.jpg

Reconnect the power plugs in place allowing enough cable at the back of seat for streching.

Refitting is basically a reversal of the above, be careful when reconnecting metal rails on seat fabric, this is a very tight fit.

http://i59.photobucket.com/albums/g309/dt7734/DSCF0838.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0837.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0836.jpg

http://i59.photobucket.com/albums/g309/dt7734/DSCF0835.jpg

Total time taken about 5 hours but time was allowed for taking these pics.

I hope this info is of use to anyone that needs to replace a heated element.

Personally I'm really chuffed with the results and I've saved myself a shed load of cash, enough to decorate the kichten as I've just bought my own gaff!

Any comments are most wellcome.

Cheers

Dave
 

·
Registered
Joined
·
427 Posts
An excellent guide, as they say 'a picture speaks a thousand words'.

It has given me more confidence in attempting to fit heated elements into my non heated(very cold) seats.

Job well done[:)]
 

·
Registered
Joined
·
2,263 Posts
Great work Dave!! I know how fiddly this is as I replaced the seat base cover on my drivers side recaro. As you say, its very delicate work - especially trying not to tear the seat base foam when unclipping and reclipping the cover!

Cheers for sharing your pics - I couldn't find anything like this when trying to attempt mine!
 

·
Mk4 for 13 years
Joined
·
993 Posts
Excellent guide. Hope this can be made into one of those "sticky" guides or whatever they are called on this forum for easy reference.
 

·
Registered
Joined
·
283 Posts
I've been meaning to post up a 'how to' after fitting a WAECO kit to our golf over Christmas. Glad somebody has done it though as it shows how to pull the seats appart which is the hardest part.
 

·
Registered
Joined
·
8,293 Posts
Hi Mate - nice job there but can you tag the ends of your images so we can see them without clicking.

just put '[im g]' at the front of them and '[/im g]' after. (without the space between m and g)

Cheers

Baz
 

·
Registered
Joined
·
487 Posts
Hi Mate - nice job there but can you tag the ends of your images so we can see them without clicking.

just put '[im g]' at the front of them and '[/im g]' after. (without the space between m and g)

Cheers

Baz
That would be great if you could do that. Could print it all out then. Top write up, just needs the pics sorting. [Y]
 

·
Registered
Joined
·
487 Posts
Anyone know how much the heating elements are? My drivers side has stopped working and the passenger only gets luke warm. I followed the fault finding flowchart on elsa but stopped where it mentioned dismantling the seat as I did not have the confidence. Now with your excellent guide I may "give it a go".

Excellent guide, well done!
 

·
Registered
Joined
·
488 Posts
Discussion Starter · #13 ·
Hi

Heater element set me back ?48 from the stealers, if you know anyone who works at Bentley you can get 10% off on parts, that brought mine down to ?43.20p.

Hope this helps

Dave
 

·
Retired
Joined
·
1,224 Posts
Nice work! I've just bought a new GTI with heated seats and the drivers side one isn't working [:(] I checked the fuse and it's fine so I assume it's the element! Unless anyone has any other idea?
 

·
Registered
Joined
·
8,293 Posts
Pricey - swap the switches and try it. Same goes for people whose seats are only getting luke warm especially because that's almost definitely a switch problem.

Baz
 

·
Retired
Joined
·
1,224 Posts
Ah-haaa, nice idea Baz, you leg-end [:D]

I'll be fitting my bora vents next week (once I find a loom and fix the drivers side slats) so I'll switch em round then and see if it's the switch or not [Y][:)]
 

·
Registered
Joined
·
488 Posts
Discussion Starter · #18 ·
Hi

From my experience the easiest way to test elements is by using a multitester across the terminals under the seat that go to each heated seat element.

Set the multitester to OHMs and place across terminals, if you get a resistance of about 2 OHMs then the seat element is ok, test for each seat element because if either seat does not have any resistance then this means it is open circuit and therefore will not work.

I found that on my car the back heated seat element had resistance of 2 OHMs and the base heated seat showed no reading and was open circuit, but neither seat worked once the base element had failed.

Hope this helps.

Dave
 

·
Registered
Joined
·
487 Posts
I had a look at my heated seats the other week. Which terminals need testing with a multimeter as the green plug has 6 terminals? Is the green plug for the seat cushion and the small 2 pin plug for the backrest?
 

·
Registered
Joined
·
488 Posts
Discussion Starter · #20 ·
Follow the wire coming through the base of the seat, this will split in two, from memory the white plug does complete the loop to the backrest element but this element rarely fails.

Follow the other wires down to the green plug and you should be able to see which terminals these go into. My advise would be to take the seat out as this is quite easy, rather than struggling from trying to get access from under the seat whilst still in the car.

Dave
 
1 - 20 of 60 Posts
Top