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jbk



Member Since: 22 Nov 2015
Location: Hertfordshire
Posts: 181

United Kingdom 2016 Defender 90 Puma 2.2 HT Santorini Black
Heated Seats - Operation Duration
Excuse the pretentious title, but couldn't think of how to reword it well and accurately!!

My heated seats come on nice and warm for perhaps 4mins or so, then they cool right down again, perhaps maintain an ambient temp, but not too hot a one, and then don;t fire up hot again until ignition is turned on and off again.

Is this normal? If so any way to override to maintain a higher constant temp?

(new 16 reg car)

Thanks
Post #571297 16th Oct 2016 6:25pm
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CDN38



Member Since: 14 Nov 2014
Location: Courtenay, BC
Posts: 729

Canada 2000 Defender 110 Td5 SW Bonatti Grey
Interesting question. I have a pair of factory heated XS seats from a MY2015... same thing. Nice and toasty to start for about 5 minutes then they seem to just drop off in temperature to almost no heat, almost as if they turned off.. If I leave them on, occasionally there's a warm burst for a minute, then gone again. If I turn the seat off, and back on (with about 30 seconds between switching) still doesn't come back as hot as when originally turned on.

Curious to see what other peoples experiences are, nobody out in this neck of the woods with factory heated seats to compare with. it's a Landrover thing...

my renovation thread:
http://www.defender2.net/forum/topic40792.html
Post #571345 16th Oct 2016 8:11pm
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Marks Landy



Member Since: 09 Feb 2015
Location: Cheshire
Posts: 299

United Kingdom 1985 Defender 90 200 Tdi SW Java Black
My 15 plate XS is the same.
Nice and toasty bum for 5 mins then it cools down.

I fitted take off XS seats to my old 90 with Waeco bum warmers, much better.
Post #571381 16th Oct 2016 8:52pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20441

United Kingdom 
Retro fit Waeco here too and no complaints. Best heaters I've known. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪
Post #571384 16th Oct 2016 8:54pm
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PumaPhil



Member Since: 26 Oct 2014
Location: Bridgend
Posts: 201

Wales 2015 Defender 90 Puma 2.2 HT Aintree Green
I thought the factory seats have a thermostatic switch off?

My interpretation is that a cold seat and cold bottom combination means they heat. After 5 mins or so, the seat has heated itself, and also your rear end, therfore switching off. There's very little chance of a seat cooling whilst your sat on it, therefore the heaters don't have a chance to switch themselves back on again.
Post #571622 17th Oct 2016 7:53pm
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CDN38



Member Since: 14 Nov 2014
Location: Courtenay, BC
Posts: 729

Canada 2000 Defender 110 Td5 SW Bonatti Grey
I would guess that would depend on where the thermostatic sensor is, and the type of switch being used.

I'm using a simple on/off Carling switch, which says on until switched off. I would imagine the stock LR switch powers on, but would be run through a timed relay possibly?? it's a Landrover thing...

my renovation thread:
http://www.defender2.net/forum/topic40792.html
Post #571627 17th Oct 2016 8:01pm
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

thermostatic switch built in to seat heater pads to promovent over heating
Post #571629 17th Oct 2016 8:10pm
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MR_JAMES



Member Since: 10 Oct 2013
Location: ESSEX
Posts: 248

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Stornoway Grey
There is a little round button in the middle, bottom of the seat back.. you can feel it if you look. That is the thermal cut out..

I know because I poked mine and squeezed it together / broke it! 1953 80"
1987 mini city e
2011 90"
Post #571651 17th Oct 2016 9:04pm
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CDN38



Member Since: 14 Nov 2014
Location: Courtenay, BC
Posts: 729

Canada 2000 Defender 110 Td5 SW Bonatti Grey
So once you broke it.... what happened? Did the seats still heat up and just stay hot? it's a Landrover thing...

my renovation thread:
http://www.defender2.net/forum/topic40792.html
Post #571657 17th Oct 2016 9:32pm
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Tommo



Member Since: 19 Dec 2013
Location: Leicestershire
Posts: 830

United Kingdom 2006 Defender 90 Td5 Black LE Java Black
slightly off topic...can I buy the male / female connectors for the wiring to connect the seat wiring to the main wiring??
Post #571990 19th Oct 2016 8:01am
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CDN38



Member Since: 14 Nov 2014
Location: Courtenay, BC
Posts: 729

Canada 2000 Defender 110 Td5 SW Bonatti Grey
PaulMc is a member here, and can get you all the electrical connectors you need. it's a Landrover thing...

my renovation thread:
http://www.defender2.net/forum/topic40792.html
Post #572067 19th Oct 2016 3:53pm
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MR_JAMES



Member Since: 10 Oct 2013
Location: ESSEX
Posts: 248

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Stornoway Grey
CDN38 wrote:
So once you broke it.... what happened? Did the seats still heat up and just stay hot?


it stopped working completely. I felt it was a bit uncomfortable and tried to push it into the seat foam a little.. the round disc then was pushed in and that broke it. Managed to repair it by purchasing a thermistor and swapping it over.

see my post here - http://www.defender2.net/forum/topic27321.html 1953 80"
1987 mini city e
2011 90"
Post #572162 19th Oct 2016 8:52pm
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jbk



Member Since: 22 Nov 2015
Location: Hertfordshire
Posts: 181

United Kingdom 2016 Defender 90 Puma 2.2 HT Santorini Black
yup, so seems they all behave the same. I wonder if there's a way to recalibrate the thermostatic switch so that it kicks in earlier. All other manufacturer's heated seats in my experience maintain appropriate temps well, wonder if they work with a similar system thus a switch from another manufacturer could work in the LR system? Do discoveries use the same system yet maintain temp ok?
Post #572739 22nd Oct 2016 10:18pm
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edtidswell



Member Since: 16 Apr 2015
Location: harrogate
Posts: 22

United Kingdom 2016 Defender 90 Puma 2.2 HT Keswick Green
I recall reading somewhere the seat heats itself to somewhere around 38 degrees. It then switches off. When the temperature drops to somewhere in the 20s it turns back on to reheat. Mine does this and is a new 16 plate. Hope this explains it
Post #572749 23rd Oct 2016 12:11am
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