[Alessiosantambrogio]

Ciao a tutti, sperando ci sia qualcuno che mi sappia rispondere posto qui una domanda tecnica, ho picchiato e mi è saltato l'airbag del sedile del passeggero e basta.
Il meccanico mi ha detto che sono da cambiare sedile e centralina airbag.
Io nella mia ignoranza ho già preso un sedile, usato originale, pensando solo dopo che ci sarebbero potuti essere problemi di compatibilità con una centralina.
È realmente così?
Avendo preso già il sedile(con airbag incorporato) cosa dovrei fare per assicurarmi di prendere una centralina giusta? Spero che la domanda sia chiara perché ho una confusione pazzesca in testa e non riesco a spiegarmi🤣.
Grazie mille Comunque

"Hello everyone, hoping there is someone who can answer me, I posed a technical question here, I hit and the passenger seat airbag jumped and that's it. The mechanic told me that the seat and airbag control unit need to be changed. In my ignorance I have already taken a seat, used original, thinking only after that there could be compatibility problems with a control unit. Is it really so? Having already taken the seat (with built-in airbag) what should I do to make sure I get the right ECU? I hope the question is clear because I have a crazy confusion in my head and I can't explain myself🤣. Thanks a lot Anyway"

 

[voxmagna]

Once the airbag fires, controller is usually permanently dead (internal semiconductor chip fuses). After a crash, you may need dealer diagnostics to replace the controller and carefully check other electronic safety parts and sensors.

 

[Alessiosantambrogio]

Okay, but is the airbag controller linked in any strange way to the seat? I mean, can't i just take any passenger seat and any controllers from ebay?

 

[silvershadow]

Okay, but is the airbag controller linked in any strange way to the seat? I mean, can't i just take any passenger seat and any controllers from ebay?

I would be very surprised if any other airbag unit would be suitable as I expect the crash sensors fitted to the Eos would be programmed to suit the vehicle structure response in a crash situation.

Airbags are a critical safety device that your life and personal safety depends on in a crash situation.

I would not consider a "home mechanic solution" under any circumstances as your life and that of any passengers may absolutely depend on proper and appropriate activation of the airbags.

Ask yourself "what is your life" and prospect of debilitating injuries worth.

 

[Alessiosantambrogio]

Well yes I wasn't complaining about the cost, i just want to be sure on what i'm going to do, because I don't really understand this controller thing, but if I understood I can't just buy any EOS controller on ebay, it must have the same code, and that's the same for the seat i guess

 

[aku-aku]

The controller is 1Q0959655A, and it will need coding. To perform the coding you will need a diagnostic tool like VCDS or OBDeleven. You should first read the coding from the current airbag controller, then when you replace the controller, set the new coding. You need to replace the controller because the crash data is permanently stored in the controller.

The airbag unit in the seat doesn't have any logic in it, so you don't need to worry about coding there.

 

[voxmagna]

You need to replace the controller because the crash data is permanently stored in the controller.

Once the airbag fires, controller is usually permanently dead

I would not consider a "home mechanic solution" under any circumstances as your life and that of any passengers may absolutely depend on proper and appropriate activation of the airbags.

Air bags in cars are all part of a complex electronic 'SYSTEM'. When part of the system is compromised, the complete system has to be thoroughly tested. Provenance is very important. If you buy a used part as complex as an air bag controller, you have no idea if it will work when needed, has a 1% fault or is incompatible with your VIN build. When a V.W shop supplies a new controller it comes in a sealed bag and their technicians fit then test the complete airbag system. You then have provenance the safety system will work. The airbag controller remembers a crash situation (or accidental air bag firing) by permanently fusing chips inside micro circuits - not fuses you just replace! Once fused the chips are dead and the controller won't function again.

By the time the OP has learned to be competent with a diagnostics tool to repair an airbag system and know it has been been done correctly, he might as well get somebody with training and experience to do this important safety work. I haven't coded an airbag controller but it wouldn't surprise me if there were some dealer only access codes required?

For a long time the car industry has discussed factory coding electronic control modules with the VIN number which cannot be over written by software tools. This would make DIY repairs virtually impossible. But I can see how airbag systems are a good example for the argument.?

The OP should consider reading the service manual procedure for repairing an airbag system. I know it is very detailed and requires any suspect part not passing checks to be replaced with a genuine new V.W part.

 

[Alessiosantambrogio]

Okay, thank you very much to all, and sorry for the trouble, you've been very kind