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jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7682

2011 Defender 110 Puma 2.4 USW Stornoway Grey

Heated seat problem

My drivers heated seat, back and base dont work.

Std lr wiring, factory fit.

When I got the vehicle there was no voltage to the seat base, neither elements heated. There was voltage to the back elements but it fudnt work and didnt make it from there to the base.

I fitted a new back heated element.

I now get voltage to the back element, as before, out of the back element and to the base element. But still neither work.

I assume there is voltage but no current.

Where is the earth for the standard lr wiring please for the heated seats.

Any suggestions welcome for finding a solution. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

4th May 2020 9:59pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7682

Any thoughts please? Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

5th May 2020 10:19pm

Balvaig

Member Since: 19 Feb 2016
Location: Fife
Posts: 719

2016 Defender 90 Puma 2.2 Landmark LE Corris Grey

Try running a temporary power supply from the battery to the seat elements. This will establish whether they are working or not.
From there you can work back through the seat wiring and then the loom.

6th May 2020 8:11am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7682

Cheers, spare seat that works off its wiring doesn't work on drivers side so pretty confident it's the wiring not the elements. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

6th May 2020 8:36am

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6478

2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

This is the 2.4 Puma heated seat diagram.

The (shared) ground point C0809 is on the engine bay side of the bulkhead, behind the coolant header tank, should be on the stud next to the one with the big multi-way ground header attached.

C1401/C1403 are the sockets mounted on the seat box.

Check the socket for continuity to a known good body/chassis ground on the black wire. Check for 12V on the blue/pink when the ignition is on and the switch is down.

https://www.defender2.net/gallery/albums/u...EATING.pdf

1988 90 Td5 NAS soft top

2015 D90 XS SW

6th May 2020 10:06am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7682

thank you martin for suggestions, will get on to it hopefully tomorrow Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

7th May 2020 9:02pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7682

resolved, the heated element in the seat base was broken and not allowing complete circuit. have now replaced the element. So an 11 Plate with two new elements needed (back and base) of drivers seat - they dont seem to have lasted long! Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

11th May 2020 4:08pm

htb2

Member Since: 02 Nov 2018
Location: aberdeenshire
Posts: 509

Previous owner obese?

11th May 2020 5:40pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7682

No idea. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

11th May 2020 9:42pm

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