Two problems related to warning light on have been reported for the 2003 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Audi A4 based on all problems reported for the 2003 A4.
Air bag warning light came on. Took car into auto repair shop and was told it is a wiring problem and the front seat needs to be removed to make the repairs. I searched the internet and was shocked to see many reports of the same problem. Even more shocking is that Audi sells a repair kit for $60-$70 to fix the problem. So Audi makes a defective product that affects an important safety feature and instead of recalling the cars and fixing the problem for free they sell a repair kit and profit from their negligence. Hope the government will remedy this situation. If you search this model and year car you will see it has a known timing belt defect, a known oil problem, plus the car is defective in OH so many parts. Hello national safety transportation board- wake up!.
The contact owns a 2003 Audi A4. While parked, the contact noticed that the air bag warning light illuminated on the instrument panel. The contact inspected the vehicle and noticed that the outside metal of the air bag sensor and circuit board were severely corroded. The contact replaced the air bag sensor. The vehicle was repaired. The approximate failure mileage was 105,000.