hi guys, brilliant forum! am considering a purchase on an a4 but the car has an air bag fault. it has been tested on vag-com and it is showing the passenger side ignitor has a low resistance. my question is can this ignitor be replaced with a used part from a breaker or is it a main dealer job? any ideas on how much it will cost to fix as i need to make sure the car is worth it if i purchase with this fault. many thanks.