2003 Audi A4 Quattro Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Audi A4 Quattro
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2003 Audi A4 Quattro ProblemsABS Light Due to ABS Control Module Failure
The anti-lock brake system (ABS) control module may fail causing the ABS light to illuminate. Failed modules should be replaced to restore ABS operation.
Fuel quality must be maintained to avoid engine misfire problems; the misfires may cause the Check Engine Light to illuminate.
The digital display portion of the instrument cluster may fail. Our technicians tell us the entire instrument cluster will need to be replaced to correct this concern.
2003 Audi A4 Quattro QuestionsI have a check engine light prompted by a P0501 (1 answer)
My speedometer is not working (weeks ago, it was on and off but now it's just off all the time. I replaced the Vehicle Speed Sensor with no luck, as well as F/L ABS Sensor. Any suggestions on what the next move should be?