I was able to source a set of carbon fiber sport seats for my v12v but since they don't have airbags in the seat, it triggers the srs light. Is there a way to "fool" the srs system into thinking all is ok so that the steering wheel and passenger airbags are still operational?

Thanks.

 

Is the white connection found under the carbon seat for the SRS connection? If so, perhaps the light just needs to be reset?

 

I can't give you an answer to your question. However, where did you purchase your seats? And are they bolt in? Could you post some pictures. I have always thought, they looked great and must be much more comfortable in the Eropean reviews I have seen.
Ron

 

I only know how it is done in general when you replace the steering wheel against one without airbag - then you simply plug in a resistor to simulate the existance of the airbag and thus "fool" the controls.

So I guess for the seat it's a similar procedure - unless you can reprogram the software to not expect an airbag here (probably need the acess righs of a AM dealer?).
You can simply measure the resistance of the seat airbags, AFAIK the steering wheel was 9 Ohm.

Thomas

 

Yes, the white connector is for the side airbag. Industry standard is or was Yellow. Plug it in and have codes cleared. If the seat doesn't have and SRS fitted you can use a 2 ohm resistor, or buy an airbag simulator test tool.

 

Thanks. The seat airbag was solved with a 2ohm resistor but the weight sensor is triggering the light for the passenger dash airbag. Anyone know how to defeat this sensor or which plug is the one that controls it? My preference would be for the passenger airbag to always be on since only adults ride in the car.

 

Might be worth reaching out to Astonmartinbits.com, I've seen older listings for the carbon seats that say they come with all of the necessary resistors to defeat the sensors, so they might know what you may still need to get ahold of and probably sell the parts as well.

If you don't mind sharing, where did you source your seats from?

 

I bought them off of eBay UK probably 8 years ago now. Pretty sure I reached out to ambits and the answer was it should just plug and play which would be true for the EU version of the car. My technician here claims its due tot he fact that the car has it's own ecu checklist and does a run down of systems when the ignition is turned on. So to defeat this, the software would have to be updated by AM NA which of course they wouldn't do since this is against regulations.

 

Why not measure the resistance of the existing weight sensor in the old seat?

 

Unfortunately it's not as simple as the seat airbag because the four weight sensors plug into a seat ECU that then plugs into a harness in the car. The wiring all seems to connect to one plug that's shared with other controls. On top of that, according to my mechanic, who's been avoiding this like the plague, says the sensors have to be calibrated by weight for it to function properly. If it can be defeated by a resistor, that would be amazing, but the way the wiring is set up, it's beyond my limited capabilities.

 

I didn't know it's that complicated.
I only know similar systems with either a switch (on/off) or a resistor change function - both just as 2 wire systems.
Having trouble o see why it would need 4 different sensors, though.
Just have the non US spec wiring diagrams in my workshop handbook, those show just a 2 wire pressure sensor.

A pragmatic solution would be to instal the whole sensor (package) in your new seat and reconnect. Either bought new or transplanted from your old seat.

 

It's a good idea. I thought about buying a spare seat, but I didn't want to spend roughly $1000 to find out it didn't work. Even if I plugged sensors in from a different seat, because there's no place to put them under the carbon seats, there's no way to register a person is sitting, so the airbag wouldn't deploy in a frontal collision. The airbag would just be off all the time like it is now which wouldn't really be the end goal for me. Because there are four sensors, I think that's why the mechanic was saying the seat has to be calibrated. For instance, distinguishing a heavy backpack/child on the seat or something.

 

Hm, all carbon seats I know are real easy to either strip the whole cover or remove the seat cushion.
So placing the sensor between cushion and shell should be easy.

Did you check if the wiring on your stock seats really have 8 wires for the supposed 4 sensors?

 

The sensors are located between the seat rails and side mounts. It's not a pad under the seat cushion.

 

I believe you talk about the seat position sensor.
Could you share a pic (old & new seat)?
BTW, do you have memory seats (old & new seat)?