Heated seat connections

thanos.m · 15th June 2021, 16:38

Hello all,

I've been having a very wierd issue with my drivers seat. One of the connections for the heated seat keeps getting disconnected I've tried to remedy this in a few ways cable ties and what not but always finds a way to disconnect itself. Now the wierd part of the issue is that since this started happening the seat heating stopped working I've checked the fuse and it's fine but also every time this little wire disconnects it triggers an airbag fault which makes no sense to me as to why would the heated seat wire would trigger it. I've included some photos of the connector just in case I'm wrong. Any ideas are welcome

COLVERT · 15th June 2021, 17:35

--Air bag.

However the loom would have been designed with enough slack in it to stop this happening.--Guess you need to trace the wires to find out where this slack has gone to.---

thanos.m · 15th June 2021, 19:03

Thank you my main concern is why has the heating stopped working and why is this causing an airbag fault

COLVERT · 15th June 2021, 20:16

Did you check the fuse by eye or did you check the circuit through it ??

thanos.m · 15th June 2021, 20:19

I swapped it with a new one but the passager heated seat works fine anyway

TriumphStag · 17th June 2021, 18:40

That seems very bizarre. When you reconnect them, do they click together nicely (i.e. feel like they have pressed home) or do they just push together with no feel of locking? if the latter, it is possible that they just vibrate loose and I would put some insulating tape around the join to keep them together. I cant see how they could come apart without damage if properly clipped together.

Failing that, something must be happening to pull on one of the wires. Does this happen when the seat is moved? if so, get someone to move the seat whilst you look from underneath with a torch.

The airbag connector is known to be a bit iffy and can lose its connection when the seat is moved and just needs a wiggle to reseat the pins - is it possible that when whatever it is puts a strain on the seat wire it also puts a strain on the airbag connector, or even the weight of the connector itself dropping down?

stevestrat · 17th June 2021, 19:16

Have the seats ever been out? Possible the wiring routing isn't correct.

I replaced the airbag and seat belt pre-tensioner connectors and also added about 6" of wire so seat movement can't affect then.

thanos.m · 18th June 2021, 12:28

The connector does click in nicely and also I rarely move the seat as I'm the only 1 driving now I think ive managed to secure it with a spaghetti of zip ties. What I still don't understand though is why this was causing an airbag fault tracing the wires they are not linked in anyway to the pretentioner or the occupancy sensor wiring and also my heated seat has stopped working of course

15th June 2021, 19:03	#3
thanos.m Avid contributor Rover 75 saloon Join Date: May 2019 Location: West Sussex Posts: 220 Thanks: 54 Thanked 41 Times in 26 Posts	Thank you my main concern is why has the heating stopped working and why is this causing an airbag fault Last edited by thanos.m; 15th June 2021 at 19:42..

17th June 2021, 19:16	#7
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,473 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	Have the seats ever been out? Possible the wiring routing isn't correct. I replaced the airbag and seat belt pre-tensioner connectors and also added about 6" of wire so seat movement can't affect then. __________________ Steve T4 Location Map

15th June 2021, 17:35	#2
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	--Air bag. However the loom would have been designed with enough slack in it to stop this happening.--Guess you need to trace the wires to find out where this slack has gone to.---

15th June 2021, 20:16	#4
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Did you check the fuse by eye or did you check the circuit through it ??

15th June 2021, 20:19	#5
thanos.m Avid contributor Rover 75 saloon Join Date: May 2019 Location: West Sussex Posts: 220 Thanks: 54 Thanked 41 Times in 26 Posts	I swapped it with a new one but the passager heated seat works fine anyway

17th June 2021, 18:40	#6
TriumphStag Gets stuck in MK1 Connie SE 2.0CDTi Tourer Join Date: Mar 2012 Location: Crawley Posts: 635 Thanks: 39 Thanked 79 Times in 52 Posts	That seems very bizarre. When you reconnect them, do they click together nicely (i.e. feel like they have pressed home) or do they just push together with no feel of locking? if the latter, it is possible that they just vibrate loose and I would put some insulating tape around the join to keep them together. I cant see how they could come apart without damage if properly clipped together. Failing that, something must be happening to pull on one of the wires. Does this happen when the seat is moved? if so, get someone to move the seat whilst you look from underneath with a torch. The airbag connector is known to be a bit iffy and can lose its connection when the seat is moved and just needs a wiggle to reseat the pins - is it possible that when whatever it is puts a strain on the seat wire it also puts a strain on the airbag connector, or even the weight of the connector itself dropping down?

18th June 2021, 12:28	#8
thanos.m Avid contributor Rover 75 saloon Join Date: May 2019 Location: West Sussex Posts: 220 Thanks: 54 Thanked 41 Times in 26 Posts	The connector does click in nicely and also I rarely move the seat as I'm the only 1 driving now I think ive managed to secure it with a spaghetti of zip ties. What I still don't understand though is why this was causing an airbag fault tracing the wires they are not linked in anyway to the pretentioner or the occupancy sensor wiring and also my heated seat has stopped working of course