Member Since: 03 Mar 2016
Location: Essex
Posts: 56
Heated seat confusion
Right so I bought a disco 4 which I love btw but a couple of weeks ago and already experiencing annoying electrical faults. So basically the passenger heated seat stopped working last week, after some playing around and replacing the small ecu for the seat it now only seems to heat up when the drivers seat is switched on. It also now seems that if I switch the car off with the heated seat on when I switch it back on again the heated seat comes on is this normal ? Girlfriend really feels the cold and I don't so apart from just putting up with it or getting a new gf which I really don't want to do as I just bought the car has anyone got any suggestions as intermittent faults like this drive me crazy thanks
3rd Apr 2016 11:58 am
Russell
Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
That is not right for sure. Might help if you posted details of your car what tear what model etc.MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club
3rd Apr 2016 12:11 pm
challenger23
Member Since: 03 Mar 2016
Location: Essex
Posts: 56
Yh it's really confusing because obviously the elements are working but not when they're asked , it's a 2011 HSE SDV6
3rd Apr 2016 12:13 pm
Russell
Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
Do the middle row work okMY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club
3rd Apr 2016 12:17 pm
challenger23
Member Since: 03 Mar 2016
Location: Essex
Posts: 56
Yh the rears work fine and the drivers side but I don't get why you can have the passenger side on with the lights on and then as soon as you put the drivers side on it starts working
3rd Apr 2016 12:19 pm
Russell
Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
There is a sensor in the seat to detect when some one is sat in it may be this at faultMY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club
3rd Apr 2016 12:22 pm
challenger23
Member Since: 03 Mar 2016
Location: Essex
Posts: 56
So will the heated seat not come on if no one is actually putting weight on it ? Don't understand what the drivers side has to do with it
3rd Apr 2016 12:25 pm
SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1145
The most likely reason is you bought a drivers side controller and fitted it to the passenger seat.
As it uses seperate ecus but on a shared can system, the heater control unit sends out a request for the passenger seat heater to be on, but nothing responds, as you haven't got one fitted. When you request the drivers seat heater, the request sent out is fulfilled by 2 drivers seat heater ecus, thus both heat. 8)
To check this, do both seat heater ecus have the same part numbers, or different? If so, what are they?
Pm me you VIN and I'll check the part numbers for you.
In case anyone is wondering, D3's don't use this system, only D4's.
The seat will heat without being occupied.
HTH
Regards
Steve
3rd Apr 2016 3:46 pm
tayaste
Member Since: 15 May 2013
Location: Chester
Posts: 7633
Well that makes sense
3rd Apr 2016 3:50 pm
tayaste
Member Since: 15 May 2013
Location: Chester
Posts: 7633
Sometimes I wish I lived in Somerset
3rd Apr 2016 3:53 pm
challenger23
Member Since: 03 Mar 2016
Location: Essex
Posts: 56
Yes that does make sense , I've been trying to figure it out all day , I'll have a look and get back to you.
3rd Apr 2016 4:13 pm
challenger23
Member Since: 03 Mar 2016
Location: Essex
Posts: 56
Spot on problem solved !
10th Apr 2016 6:20 pm
SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1145
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which I really don't want to do as I just bought the car has anyone got any suggestions as intermittent faults like this drive me 
crazy thanks
