Two problems related to electrical system have been reported for the 2005 Audi S4. The most recently reported issues are listed below.
Heated seat element burned or melted the seat while the car was off overnight. Passenger seat leather is now separated, shriveled (hard as a rock) and would have burned the passenger if they had been in the seat.
Car started misfiring and within less than 5 miles in the highway then started to build up smoke inside the cabin, car then stopped and towed to a mechanics who confirm the diagnosis of misfiring of 3 cylinders and found overheating of the passenger side catalytic converter that lead to a melting a connector of the transmission.
| Electrical System problems | |
| Instrument Panel problems | |
| Headlights Turn Off While Driving problems |