Air bag fault light

[Foz-notts]

Hi All,

I have a 2.0 TDI 140

I was driving down the A1 and suddenly my fasten seat belt light and air bag fault lights came on. The seat belt one went off after a short while but the air bag stayed on. I took it to my local garage(not main dealer) and had a diagnostic and it came up with 12 different faults relating to crash sensors. he managed to reset 8 of them but 4 remain.
4 months previous I had a 'Parrot' fitted.

Has anybody had a similar problem or is there some sort of terminal block which could have been disturbed?
Suggestions please before the car has to come to pieces

Thanks,

Foz

P.S. The car has never had a bump