j1mmy Posted January 14, 2009 Report Share Posted January 14, 2009 Hi All Just got in the car last night and found the ESP and ABS on all the time and heater coil light flashing. The brake pedal felt a bit firmer than normal, but got home ok. Had a look around and only thing I noticed was the rear brake lights did not work. Got up this morning to take it in to the garage and all seems fine again, no lights nothing. Could this be a result of the brake light switch under the pedal (as they are working now). Although when the ABS and ESP was showing on the dash, neither worked (I tested it!!). Your thought would be most welcome. Audi A4 Avant 52 plate 2.5 TDI non Q Link to comment Share on other sites More sharing options...
PetrolDave Posted January 14, 2009 Report Share Posted January 14, 2009 When the brake switch fails it upsets the ABS system so that stops working, and since the ESP relys on the ABS system that stops working too. Link to comment Share on other sites More sharing options...
shark_90 Posted January 14, 2009 Report Share Posted January 14, 2009 Yep definitely the brake switch if your brake lights have magically started working again Link to comment Share on other sites More sharing options...
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