2009 Audi A4 Quattro Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2009 Audi A4 Quattro
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2009 Audi A4 Quattro ProblemsCheck Engine Light Due to Vacuum Leaks, Oxygen Sensor, or Catalytic Converter Fault
An ignition coil or spark plug may fail unexpectedly resulting in an engine misfire and possible illumination of the Check Engine Light. Vehicles equipped with spark plug wires may also develop a misfire caused by a failed spark plug wire.
2009 Audi A4 Quattro QuestionsWhat makes the car stall, sputter, shake with epc light on? How much to fix? (1 answer)
Began suddenly after getting on highway. Then continued on the drive home with acceleration. I've read it could be the speed sensor. If so how much might this cost to fix?
I am replacing brake pads and rotors. Thought the pads came with the sensor(s) and need to know if I should order one sensor or two.
According to the dealership the front brake pads are completely worn. They want to replace the rotors at the same time. This seems excessive, particularly given the low mileage.