 | Home > Faults & Fixes (L663) > Intermittent heating with heated/cooled front seats |
 
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| ckamps Member Since: 04 Jul 2023 Location: Oregon Posts: 49  
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Have people with 14-way heated and cooled electric memory front seats found that the heating function is unreliable?
For example, the heated seats seem to work fine for the most part, but on occasion, the seats won't heat and instead act like they're on the low setting of the cooling function. i.e. you can feel a slight cool breeze from the seats and no heat when the heating level is set to any level. This problem has been occurring for both the driver and passenger front seats. I have a 2022 NAMER 110 X-Dynamic with 14-way heated and cooled electric memory front seats. Without success, a few things I've tried to work around the issue: * Hard reset of Pivi with engine off * Using the Pivi screen to turn on and adjust the heating level I found one forum thread where an owner reported that the heating function of the heated/cooled seats seems to have a mind of its own. I can agree with that. https://www.reddit.com/r/NewDefender/comme...are_button The front heated seats in our 2021 90 First Edition with heated seats (no cooling function) work reliably. However, I read that the heating function in the heated/cooled seats uses a different technology. i.e. not just a heating pad, but a common device for both cooling and heating: https://landroverforums.com/forum/2020-def...post856038 2021 D90 Pangea First Edition 2022 D110 X-Dynamic HSE Eiger Grey Last edited by ckamps on 10th Mar 2025 12:31am. Edited 1 time in total |
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19th Jan 2025 6:58pm |
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| jordjdw87 Member Since: 18 Jan 2024 Location: Scotland Posts: 10 
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This has actually just started happening on my seats over the weekend. Wife spotted it on passenger seat. I came here to see if others have same issue. I’ll give my local dealer a call
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11th Mar 2025 10:11am |
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| isugoo Member Since: 18 Feb 2025 Location: California Posts: 18
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I bought a CPO D90 75th limited on 2/15. Car went to service 1 week after as battery died. Drove for a week then now non of heating functions work (heater, heated steering wheel, heated seats - both fronts and bak) a cooled seats). No idea how all can stop after dealership visit.
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13th Mar 2025 5:11am |
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| ckamps Member Since: 04 Jul 2023 Location: Oregon Posts: 49
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Were the symptoms the same as I described above? I.e. dial set to heat, seats heat for a while, but then cool starts coming out. Manipulating the dials has no impact. After car sits for a while, seat heating works again. If so, did the dealer address it? My dealer has been unable to reproduce it during two visits to the dealer. They’re statiing that JLR has no records of this issue affecting other owners. They’re sending the car back to me without the issue having been fixed. Before next winter arrives, I’ll start replacing parts on my own - or sell the vehicle. 2021 D90 Pangea First Edition 2022 D110 X-Dynamic HSE Eiger Grey Last edited by ckamps on 3rd May 2025 3:52pm. Edited 1 time in total |
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2nd May 2025 11:13pm |
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| jordjdw87 Member Since: 18 Jan 2024 Location: Scotland Posts: 10
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My dealer wasn’t that helpful. Unaware of any issues happening with the seats for other customers. Was happy help arrange a date for the car to go in for diags, but not long after calling them the issue resolved itself and the seats have been fine since.
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3rd May 2025 6:36am |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 3152 
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l have the basic seats in my Commercial. They are heated but not cooled. l have always found that in cold weather my lower back and bum feel cold, almost as if there's a cooling function in the seat.
So much so, that l sometimes have to turn on the heated seat to compensate for it. There's nothing wrong with the seat as such, it's just a basic cloth seat with a heating element inside. But it's a really strange effect. This Winter l am considering fitting some Melville & Moon seat covers to see if that makes any difference. |
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3rd May 2025 10:03am |
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| ckamps Member Since: 04 Jul 2023 Location: Oregon Posts: 49
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Albeit a thread for an older JLR vehicle, the troubleshooting advice in the folllowing thread has been useful to me.
https://www.fullfatrr.com/forum/topic44946-75.html Thermistor sensing overheat and cutting off heat? I suspect that the thermistor in at least one of the 4 units across the two front seats is sensing an overheat condition and shutting down the heating function. I doubt it is an issue with the HVAC dials on the dash or some other unit in the system other than the heating/cooling components in the seats themselves. If via the Pivi interface it’s possible to select heating for only base vs rear of either of the two front seats, I’ll try to run an experiment to see if one of the two - base or rear - ends up failing. If I can isolate to one seat and either base or rear, then I’ll start by buying a new unit and doing a DIY replacement. I have not yet used my Gap IIDTool to check codes during/after a failure, but I will do that. (I would have expected the dealer to have checked the history of codes). Replacement part The part number which is the same for both front seats and the same for the base and rear of each seat is: LR080802 At ~$250 USD new or much less used, I might have to deal with replacing the 4 units one at a time to see if I can fix this issue. Replacing just peltier unit Another alternative from the other JLR thread noted above is to replace just the peltier unit that is embedded in the JLR part. Apparently, the thermistor is part of the peltier unit. On AliExpress, you can find these ~$30 USD units by searching: "Car Seat Refrigeration Sheet Peltier Ventilation Heating Cooling and Heating TED Seat Cushion Modification Refrigeration" Here is a thread describing DIY replacement of just the peltier unit in a different JLR model: https://www.jaginfo.org/threads/replace-pe...ts.113316/ Dealer troubleshooting update Our 110 has been at the dealer for more than 3 weeks but the dealer has failed to reproduce the intermittent issue. As such, they have not yet started replacing parts. They have shared that, if we can take a video of the controls when the issue occurs, that might help make the case for JLR to investigate more seriously. I’ve replied to the dealer that I’ll use a thermal imaging gun against the seats to show the temperature changes before and after the issue occurs as well as the seat heating controls having no effect. 2021 D90 Pangea First Edition 2022 D110 X-Dynamic HSE Eiger Grey Last edited by ckamps on 4th May 2025 11:06am. Edited 8 times in total |
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3rd May 2025 4:05pm |
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| ckamps Member Since: 04 Jul 2023 Location: Oregon Posts: 49
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Heated only seats simply have heating pads. The heated/cooled seats use a completely different system that does not rely on heating pads. This thread is focused on heated/cooled seats. 2021 D90 Pangea First Edition 2022 D110 X-Dynamic HSE Eiger Grey Last edited by ckamps on 3rd May 2025 5:51pm. Edited 1 time in total |
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3rd May 2025 4:06pm |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 3152
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Yes l realise that.
But l am getting a similar issue to the O/P and thought it might be useful to pass on. As l don't have seat cooling there may possibly be something else going on, to do with the HVAC system in the rear compartment. |
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3rd May 2025 5:12pm |
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| ckamps Member Since: 04 Jul 2023 Location: Oregon Posts: 49
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Different symptoms and completely different systems in the seats themselves. The cool air experienced by me when the seat heating function fails is coming through the perforations in the seats and not from vents associated with the HVAC system. 2021 D90 Pangea First Edition
2022 D110 X-Dynamic HSE Eiger Grey |
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3rd May 2025 5:51pm |
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