Heated seats.......

UhOh

Top Post Dawg
Joined
Dec 24, 2014
Location
PNW
TDI
2000 & 2003 Golf GLS
Completed most of the wiring, and just waiting for some harness parts to come in.

One question, on the wiring diagrams, does the "30 unswitched power" refer to the "30" or the "30A" power source?
What wiring are you referring to? I didn't see what approach you're taking.

As an update to my quest, I just picked up a complete 2000 Jetta that has only 118k miles (gasser w/bad engine): paid $400. The car is immaculate. Seats, just what I wanted- beige, cloth heated (exact same pattern), are in excellent shape. Seller (it was his daughter's car) says that the driver's seat heater wasn't working- I figure I can resolve this.

I plan on using this wire harness:

https://www.kufatec.de/shop/en/retrofits/seat-accessories/seat-heating-harness-vw-audi-seat-skoda
 
Joined
Jan 8, 2011
Location
Banff, AB
TDI
2003 Golf TDI (MK IV - ALH)
Sorry for the confusion, I'm using this diagram and referring to the power sources noted near the bottom of the diagram ("30 unswitched power").


Ok, I think the bently diagram is confusing. Too much info for what I need. I've put together this diagram to simplify things. Let me know if I've made any errors.
 

ToddA1

Top Post Dawg
Joined
Aug 3, 2011
Location
NJ 08002
TDI
'96 B4V, '97 B4, '97 Jetta
No clue what 30A means, other than 30 amps.

30 is a constant 12v power source. As the diagram mentions, it's unswitched.

-Todd
 
Joined
Jan 8, 2011
Location
Banff, AB
TDI
2003 Golf TDI (MK IV - ALH)
Right. So on the power studs under the dash, there is a "30" and a "30A".


Which one should I use to draw power for the heated seats? I'm using the wiring diagram shown on post 152. Thanks.
 

ToddA1

Top Post Dawg
Joined
Aug 3, 2011
Location
NJ 08002
TDI
'96 B4V, '97 B4, '97 Jetta
In this case, it appears it's just a separate feed from the battery. I'd confirm with the Bentley, and if so, choose whichever.

-Todd
 

UhOh

Top Post Dawg
Joined
Dec 24, 2014
Location
PNW
TDI
2000 & 2003 Golf GLS
Managed to tear into the driver's seat after finding that the thermistor circuit tests "open." Most seem to state that it's the thermistor wires that break, but having the seat apart I'm not seeing any signs of breakage:



I cut just to start tracing the wires. Hard to see, but the wires seem perfectly fine, though who is to say whether they couldn't be broken inside the insulation (I've read that they tend to break out-right). I'm hesitant to cut up any further unless I'm certain that the thermistor is shot: I'll be cutting right over the elements themselves. Not certain how the wires connect down below; seem to disappear into some clumps of black glob-y material, which I'm also a bit hesitant to mess with.
 
Last edited:

SilverGhost

Veteran Member
Joined
Mar 25, 2005
Location
Back in So Flo - St Lucie
TDI
'05 Golf - totaled :(, wife's '13 Beetle - buy back, TDIless
No clue what 30A means, other than 30 amps.

30 is a constant 12v power source. As the diagram mentions, it's unswitched.

-Todd
I know this is old post, but that does NOT mean 30 amps. DIN standard wiring in German cars 15 is switched ignition, 30 is battery +, 31 is ground, 75/x is load reduction (aka accessory).

In this case 30a is a secondary battery feed.

Jason
 

ToddA1

Top Post Dawg
Joined
Aug 3, 2011
Location
NJ 08002
TDI
'96 B4V, '97 B4, '97 Jetta
DIN standard wiring in German cars 15 is switched ignition, 30 is battery +, 31 is ground, 75/x is load reduction (aka accessory).
I'm familiar with German wiring, but based on the diagram provided, there was no "30A", which was confusing. My response included:

30 is a constant 12v power source. As the diagram mentions, it's unswitched.

In this case 30a is a secondary battery feed.
Jason

Once the pic was posted, it added clarity, which I replied:

In this case, it appears it's just a separate feed from the battery.
-Todd
 

UhOh

Top Post Dawg
Joined
Dec 24, 2014
Location
PNW
TDI
2000 & 2003 Golf GLS
Following up to my previous post above (#156), I sliced further down and found one of the wires to the thermistor broken. All has been back together and working in my car for some time now (awesome this winter!). It's looking like I now need to do the same repair to the driver's seat in the wife's car (which is what brought me back here). I had thought that I'd seen someone do such a repair in-car, popping the back of the lower seat cushion loose, but have been unable to find (just to verify that it does work, that it's the same style of seat); if anyone is familiar with that info (not sure if it was on this site or not- thought it was) I'd appreciate any tips to where I can see/find it.
 

EricMoreira

New member
Joined
Oct 19, 2021
Location
Brasil
TDI
Bora MK 4,5
[QUOTE = "kbrenny, postagem: 4278504, membro: 80302"]
Não me lembro das cores dos fios, mas vou tentar explicar.

Existem 4 fios que vão para os elementos de fábrica da VW:

poder para os elementos
aterrado para o elemento
fio de sinal do termistor para o interruptor
aterramento para termistor

Os dois aterram ambos no mesmo ponto.

Usei os 4 fios de fábrica e executei o + e - que iam para os elementos de fábrica e os corria para os elementos do mercado de reposição.

Em seguida, executei o fio de sinal e o aterramento que iam para o sensor de temperatura de fábrica e os conectei ao termistor que instalei. Instalei o termistor no mesmo local em que foi instalado de fábrica, centro traseiro da almofada inferior.

Os elementos de reposição que usei eram uma configuração de elemento de 2 fios e, embora também tivessem algum tipo de sensor / termistor, era conectado ao próprio elemento. Eu os deixei no lugar e meus elementos ainda funcionam bem com eles no lugar.

Se os sensores / termistores que vieram com os elementos falharem, provavelmente irei removê-los e conectar os fios que estavam indo para eles.
[/CITAR]
Olá
Estou instalando aquecimento no meu Bora com kits de elementos em carbono (2 assentos, 4 elementos) com interruptores OEM vi que vc fez essa instalação, minha duvida é a seguinte:
tenho que retirar o protetor térmico de cada elemento e colocar um termistor de 6,8k em cada elemento. =? como foi feita a ligação? pode me ajudar mostrando como vc vez? ea temperatura do interruptor funciona em todos os niveis? 1, 2, 3, 4 e 5
 

EricMoreira

New member
Joined
Oct 19, 2021
Location
Brasil
TDI
Bora MK 4,5
[QUOTE = "hremus, postagem: 4203425, membro: 150758"]
sim. Instalei muitos kits aquecidos de reposição com interruptores OEM. Você não precisa de todo o kit, apenas os elementos de aquecimento. Você pode comprar apenas estes (são mais baratos). Eu recomendo que você use o elemento do tipo carbono. Para 2 lugares custa cerca de 50Euro. Alguns deles incluem o termistor (4 fios). Quando comecei a instalar bancos aquecidos no mercado de reposição em 2007, usei no meu carro um kit da Waeco. Após 4 anos, os elementos de aquecimento quebraram. Substituí-os por elemento de aquecimento do tipo carbono.
Para instalar, você precisa remover os assentos do carro, remover o estofamento, instalar o elemento de aquecimento. De cada assento você passa 3 fios (energia de aquecimento, sensor, aterramento) para os interruptores.
[/CITAR]
Olá
Estou instalando aquecimento no meu Bora com kits de elementos em carbono (2 assentos, 4 elementos) com interruptores OEM vi que vc fez essa instalação, minha duvida é a seguinte:
tenho que retirar o protetor térmico de cada elemento e colocar um termistor de 6,8k em cada elemento. =? como foi feita a ligação? pode me ajudar mostrando como vc vez? ea temperatura do interruptor funciona em todos os niveis? 1, 2, 3, 4 e 5
 
Top