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Bentley contitnental gt w12 airbag warning light

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Old Sep 15, 2025 | 08:31 AM
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Originally Posted by Precizion
Hey,

I am a Bentley newbie! My Air Bag Warning Light is on and (coincidentally while valeting!) I found a Yellow plug with Purple band and Blue & Grey cable under the Driver's seat. I eventually also found a spare Socket,also with Purple band but with 'Pink' & Grey cable. It doesn't look as if they fit?

Any ideas out there?
you have to plug those back in and get the light reset
 
Old Sep 15, 2025 | 09:47 AM
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The plug & socket do not match!
 
Old Sep 15, 2025 | 09:58 AM
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Originally Posted by Precizion
The plug & socket do not match!

They plug into the seat. You have to remove the seat and look at the bottom.
 
Old Sep 15, 2025 | 10:09 AM
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Hello @amanbal510 ,
I am not sure if you read the entire thread, but the seats in his 2005 vehicle were manufactured on May 13th 2008, therefore they have been replaced, and the plugs do not match as to connector and wiring layout, so some wiring will have to be done to properly connect same to clear airbag faults.

Johnny

Originally Posted by amanbal510
They plug into the seat. You have to remove the seat and look at the bottom.
 

Last edited by Johnny Hotspur GT; Sep 15, 2025 at 10:28 AM. Reason: Wording
Old Sep 15, 2025 | 10:23 AM
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Oh okay got it, missed that part lol
 
Old Sep 15, 2025 | 01:50 PM
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Hello @Precizion ,
As to looking for the actual horn relay itself... you won't find it separately, meaning, there is no stand alone relay like other items have, at least that is my thinking.

Here is how I see it working.
The horn plate makes contact in the steering wheel control module (airbag assembly/switches), then on through the rotary coupler to the steering column control module, and as the steering column control module shows no hard wires coming out of it for the horns, I can only assume that it is done by way of a CAN BUS signal, as the Front Body Control Module shows no hard wire input for the horn either, but, the FBCM does show the "F14" fuse for the horns from the facia fuse box to the pin number 4 of the X00619 plug into the FBCM, then pin 2 of the same X00619 out to the horns, so, the relay for the horns is built into the FBCM.

So, let me ask before you start digging into the front body control module area, I am sure you have checked the F14 fuse, have you checked for power right at each horn as someone presses the horn pad, or, in a very quiet area, with all windows up, if you press the horn pad, can you hear any click in your front passenger floor board area ?










Johnny


..

Originally Posted by Precizion
Spot on again Johnny! My plug has brown + orange/ Grey cables.

Also, I'm trying to locate my Horn Relay. Not a mention of it in the Service Book apart from it being in the engine bay fuse box. I bet you know which one it is?!
 
Old Sep 15, 2025 | 02:09 PM
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Hi Johnny, terrific info as usual! Can definitely hear a click near front passenger well when the horn is pressed.
 
Old Sep 15, 2025 | 02:35 PM
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Originally Posted by Precizion
Hi Johnny, terrific info as usual! Can definitely hear a click near front passenger well when the horn is pressed.
Great, to verify that the power is coming out of the FBCM, I would check for power at the horns when pressing the horn pad, this will tell you 100% that the horns themselves are bad.

As to the seat airbag/seatbelt yellow connectors, do you want them, I have all 6 from my Hurricane Sandy Vehicle, that is, one for each seat side airbag, and two for each seatbelt igniter/clasp, the pins are corroded, but you could pull my pins out, and insert your pins from your wiring, that way, you have the correct connectors.

Johnny
 
Old Sep 16, 2025 | 12:22 AM
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Hi Johnny, I'm assuming Hurricane Sandy is a 2007 spec, so would match my Mulliner seats wiring? If so, that sounds like a great idea, yes please!
 
Old Sep 26, 2025 | 04:32 AM
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Bentley continental gt 2005

Hi Johnny, picking you brains again! Can you tell.me what the key hole above my C.D. player is for?!

Also, what's missing from behind the glove box?


 
Old Sep 26, 2025 | 03:11 PM
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Originally Posted by BruceR
If there's power to the horn and it doesn't work, look for a very small bolt somewhere on the horn body and give it a twist. While not on a Bentley, I've done this before with horns that stop working and it's always been a fix.
Just to clarify - the GT has two horns. On mine I had lost the dual tone sound. Turned out one of the horns was Tango Uniform.. Very easy to access and replace. (I gave up trying to scroll to the bottom of this thread to see if this had already been comment on.)
 
Old Sep 26, 2025 | 03:12 PM
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Originally Posted by Precizion
Hi Johnny, picking you brains again! Can you tell.me what the key hole above my C.D. player is for?!

Also, what's missing from behind the glove box?
Start a new topic thread, man, for each topic - with an appropriate title.
 
Old Sep 26, 2025 | 05:58 PM
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Hello @Precizion ,
Hurricane Sandy is not a "spec", ... It was the actual Hurricane in 2012 that caused the damage to the GT I rebuilt for myself.

Sorry for this long explanation.

The pigtails/connector plugs I have are from the 2005 seats, and seatbelts, I pictured them in previous posts in this thread, therefore, you would use the 2005 connectors on your 2008 seats and seatbelts, you would remove the 2008 connectors by pulling the pins/wiring out and inserting said pins into the 2005 connectors, therefore they will then match the 2005 wiring harness connectors coming from under the carpet, ALTHOUGH, the first of your pictures with the seat tilted back, it shows the green connector connected, that green connector is for the seatbelt (buckle/clasp section) igniter/tensioner, the other 2 wire (brown/blue) connection that has a purple fitting inside, that is the seatbelt clasp sensor connection, so, it appears that you have both connections for the seatbelt clasp and igniter taken care of, they may have kept the 2005 seatbelt clasp/buckle and attached them to the 2008 seats, so what is left is the yellow with purple side 3 pin connector to feed the seat side airbag, the issue is that this 3 pin/slot connector that only has the 2 wires (gray / blue) has to be pinned up with the yellow 4 pin connector on the seat, the problem is, I am trying to find out why it has 4 wires, 2 blue and what appears to be 1 brown and 1 black, and from my searching, 2004 to 2006 GT is basically the same, the issue is from 2007 up to 2009 and on I see the seats have added features wired in, such as G-Lock, PODS - passenger occupant detection system, along with upper seatbelt tensioners, therefore the extra wiring and plugs that you have, so the only issue for you to figure out is, which of the blue +1 wires go to the seat side airbag, as your 2005 does not have any of the other systems on board or in the main harness, the only thing to be sure if is to make sure the two connections actually go to the seat igniter and clasp, and figure out the wires to the side airbag in each front seat.

Answer the question in this picture if you can.




The above information is just my thinking and information found while reading wiring diagram differences between 2004 to 2006, and 2007 to 2011 GT's, 2007, 08, and 09 are where I saw as stated above, and as I personally removed and installed 2005 and 06 seatbelts, airbags, etc, I know these 2004 to 06 have no upper portion seatbelt igniter tensioner in the front seats, therefore no wiring, although for clarification, our 2004 to 06 GT's do have these upper portion igniter tensioners on the rear seat setup with the rear seatbelts being on the outboard section of the body, and likewise, as the fronts have no upper portion igniter, the rears have no lower portion (clasp/buckle) igniter tensioner.

My 06 GT upper portion seatbelt.


Online search 04 to 06.




The 2007 to 2011 as I searched shows the following, here is a 2008 GT front seatbelt upper portion with the igniter tensioner, along with an additional 2 pin connection, goes to show why you have extra plug connections and extra wiring.


This is a 2008 GT front upper portion seatbelt, notice connections for igniter and other.











Hurricane Sandy 2012.





Originally Posted by Precizion
Hi Johnny, I'm assuming Hurricane Sandy is a 2007 spec, so would match my Mulliner seats wiring? If so, that sounds like a great idea, yes please!
The keyhole shown below in your picture is to turn off the front passenger side airbag, for if a child were in the seat.

As to what is missing, try to give me a wider shot.


Johnny
.

Originally Posted by Precizion
Hi Johnny, picking you brains again! Can you tell.me what the key hole above my C.D. player is for?!

Also, what's missing from behind the glove box?

 
Old Sep 27, 2025 | 01:09 AM
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Hi Johnny, fantastic! Sorry about the Hurricane goof, I didn't make the connection!!!
My auto elec's adamant that his diagnostic is saying "side airbag fault", which he is also adamant are the air bags in the roof trim over the door? I didn't even know there were any there?!
I need to replace the carpet in mine, so will have to remove the seats & it will give me much easier access.
 
Old Sep 27, 2025 | 01:29 AM
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As far as the missing cover(?) I can't a better pic! All I can say is it is right above where the passenger's left foot would be (on a RHD!)
 


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