Seat Nachtmare!

  • Thread starter Pedrödelabongo
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Pedrödelabongo

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Having a devil of a job trying to get my 2006 front passenger seat to work properly in my 2005 car - the airbag light is on the dash and VCDS tells my garage that it's the passenger seat.


The car doesn't have wiring for heated seats, whereas the 2006 seats are heated, plus an under-seat lamp (which doesn't work). Also, the 2005 car has two wires to the seat belt socket, the 2006 seats don't have this.


I'm not fussed about the lamp or the heaters, I just need the airbag light to go out, or it's an MOT fail.


2005 car yellow socket and 2006 seat yellow plug - fine.

2005 car red socket and 2006 seat red plug - fine. There are two extra wires in the 2006 plug, maybe for under seat lamp?

2005 car black socket has nothing to do.

2006 seat green plug has nowhere to go.


I've removed the black plug and it's wiring from the 2005 seat to fit to the 2006 seat but now a bit lost - I need to know what the extra wires in the red plug do as I think the green plug is for seat heating.


My worst fear is that the heater pads are also pressure pads.


If I can find the seat pad wires in the 2006 seats all good. I will have to swap over the seat belt sockets and fingers crossed, all will be well.


BTW, the driver seat hasn't thrown up any codes........ yet!

Tried to upload pics, but an error occurred: 'The contents of the uploaded image do not match the file's extension.'
Whatever the hell that means!
 
You most probably have a compatability issue .
The seat are from a 2007 avant even though they are late 2006 (dec 06) and are fully operational .

The black socket is the pressure control module connection.
The green socket is for heated seats
The red socket is for powering the seat (reclining, lumbar, etc)
The yellow socket is for the seat’s airbag.

if you have an airbag light for the passenger then its most probably a wiring issue or lack of it from the floor loom , not in the seat.
what sockets do you have in the floor on both sides?
 
I have a wiring diagram on my laptop , I'll dig it out.
 
the seat pad wiring is stuck to the seat foam , you wont get it off without damaging both the element and seat pad and to be honest there's nothing wrong with the seats or wiring, as they worked 100% .
 
passenger seat 2006.
Upload 2019 9 1 15 8 29
 
As you are missing the heating function then they just wont function in that mode ,yellow is the airbag so that's ok, red is powered seat function / light and as they are only electric lumbar (no power movement) that's why the wiring plug is not fully populated so that just leaves the black plug.
Under seat lighting is part of the convience pack , so if you don't have that module it wont come on anyway so that discounts that function too.
 
This maybe your problem,
"Also, the 2005 car has two wires to the seat belt socket, the 2006 seats don't have this"
Very possibly the seat belt socket is looking for a belt being plugged in and getting confused , just a thought, have you tried plugging in the belt and seeing what occurs.
 
I can't remember what sockets are under the driver seat, but passenger sockets are yellow, red and black. There's a space where the green one would be fitted if specced from new.
Had the seat belt plugged in, but makes no difference - most likely because the wires from the black socket have nowhere to go on the seat.

In my head, I can change the seat belt socket to the old one and find the seat pressure pad then use the old black plug and it's harness to connect up - job done.

I've even considered the old 'stick a resistor in the circuit' trick, but I'd rather do the job right.

If I can't get this sorted before February (MOT), there's going to be some Valcona Avant seats up for sale................
 
This is the full wiring kit you'll find for all options fitted, just discount the functions that you don't have, it wont leave many.
Upload 2019 9 1 15 50 33
 
Cheers, Rob - I'll digest it later on.

Failing this, I suppose I could remove the covers and whack 'em on to the old seat!
 
Can you clarify what plugs are fitted to both the s-line seats , well are there 4 on each seat .
 
Plugs on original passenger seat - yellow, red and black.

Plugs on Valcona passenger seat - yellow, red and green
 
I can upload the pics on my laptop!
So this is underneath the Valcona seat - I had removed the Kopex and had to cut an earth wire - this is from the green plug, so hasn't affected anything.
 

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This is the original seat with the black plug and it's harness removed - the blue plug is the seat pressure pad.
 

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Ok, just had my recaro passenger seat out of the way to access the floor plugs.
I have all four plugs on the seat , on the passenger floor loom I don't have a black socket so my recaro black plug is unused i'm only using the yellow /red and green.
 
Exactly the same as the valcona well the passenger floor plug that is , the recaro has all 4 plugs.
Just clarify , the seat belt catch on the valcona seat, it is wired or not?
And your original seat belt one , wired or not?
 
Original seat belt socket - wired.
Valcona seat belt socket - not wired
 
It may well be the seat belt catch then and how the seat is wired for seat occupancy.
both my recaro's have wired seat belt catch's and both have all four plugs , but only yellow /green and red are used on the passenger side, which is how the s-line valcona ones are wired.
It's very possible your black plug on the original seats is wired differently on the floor connections to work with seat occupancy as the valcona one doesn't need a direct connection to the seat belt catch and is wired differently through very possibly the heating plug, cant see what else it can be, if the seat occupancy is using the same wiring seat loom plug they may account of for it.
I think you need to do some wire tracing to seat which wires go where from the plugs.
 
Sort of the same as my original post - I think I need to either fit the seat belt socket from the old seat and find the pressure pad in the new seat then fit the old black plug and it's harness or swap seat covers.
Swapping seat covers isn't that hard, as I used to do it for a living at one point. Audis were one of the more erm, 'challenging' seats to recover though!
 
I think your looking at stripping down both passenger seats and then work forward from that point to get around the passenger occupancy alert.
 
May well be the way forward, unless someone can tell me which two wires are for the pressure pad!
If it does come to stripping the seats down, it's no biggie.
 
Does you car have passenger airbag switch in the glove box, if so have you tried turning to disabled and see if the air bag lamp goes off.
 
Hmmm, funny you say that - before I fitted the seats, I had the glovebox out to repair the catch and yes, disconnected the airbag.....but I did reconnect it though - honest, Guv!
Before the car went in to the garage a couple of weeks ago, I though that this was the cause.
The airbag light has been on ever since then, but the garage insist that it's the passenger seat throwing up the light. They did clear a bucket load of codes, but this one kept coming back.
 
Now I did say , had you unplugged it...lol
Anyway, I had the same problem, I removed the glovebox so unplugged the airbag plug, did the work and refitted everything, bang light was on straight away.
No surprises as I was expecting it, but, when I ran vcds to clear the error it didn't go, I had to go back into vcds again and go into the airbag section and do it directly and made sure it went out as the clear all DTC's methos wasn't working.
maybe check the plug in the glove again .
 
Do all the plugs match. As in plug together?

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Have you tried turning the glove box key switch off and on again? May reset the seat occupancy sensor
 
HOGG said:
Do all the plugs match. As in plug together?

Sent from my SM-G930F using Tapatalk
Click to expand...

No.
I've since discovered that the green plug on the seat is for the heater elements and the car isn't wired for that, so the yellow and red plugs are connected (lumbar works OK). The red plug on the seat has two more wires, for the under seat lamp. The car isn't wired for that either.

Alpinachris said:
Have you tried turning the glove box key switch off and on again? May reset the seat occupancy sensor
Click to expand...

I have a strong feeling that the discrepancy between car and seat is more than a simple off and on again, but I'll try anything!
 
Cut car plug off and seat plug off that are for the seat airbag and wire directly together. Done this on many cars over the years to get around the problem

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It's not an air bag issue , its the seat occupancy sensor which is wired differently to pete's original seats, hot wiring is not the solution.
 
Not all variants use the seat belt fastener as part of the seat occupancy circuit, they only have the seat pad sensor to detect present on the seat hence why the fastener is not a wired item, so just sticking the belt in place has no effect , it need a bum on seat .
A case of checking where the sensor wiring connects and it can only be the red plug (lumbar and /or movement) or green plug (heating/light) as yellow is airbags .
 
Thanks for all of the replies, fellas.

I'm going to strip the covers from the leather seats and fit the old pads and wiring as required - much easier than trying to figure out, cut, splice and cross my fingers.......

The guy who bought my old driver seat is giving me his old driver seat - the wiring appears to be the same as my old seat was a simple plug 'n' play job.

BTW, his old seat has fag burns in it, hence he wanted a 'new' seat.
 
IMG 20190908 150756 resized 20190911 120353653
IMG 20190908 150809 resized 20190911 120312804
Passenger seat cushion, pressure pad and harness removed from my old seat and now ready to fit.
Once I have the driver seat cushion, etc., ready, I'll crack on and, fingers crossed, that damned airbag light will go out and stay out!
 
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Today, I fitted the seatbelt socket and pressure pad from my old seat along with the wiring to the black plug.
I stuck the pad under the seat, between the cushion and the steel springs and plugged the plug into it's co-relating socket in the floor, obviously with the yellow and red plugs into their co-relating sockets.

Started car, airbag light out, but seatbelt light and it's annoying 'ding ding' noise once moving.

Popped seatbelt in and bingo, all lights and annoying noises out.

Quick think and removed pressure pad from under the seat and tucked in the seat back net.

Started up, no air bag light, no seat belt light, no annoying noises.

Result.
Kerching.
Cashback.
Schwiiiiiing.
Happy Days.
I'm Batman.
Home win.

etc etc etc.

Turns out I didn't need anything from the old driver seat and didn't have to strip the leather seats.

By the way, I hope this helps someone out in the future!
 
You can code out seatbelt sensor

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you can stop the seat belt audible ping and dash alert via vcds.
 
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seat belt light and audible alert , I did both some time ago but you cant do the same with airbag error i'm afraid .
 
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Yep. First thing I did with vcds

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