surfdude Posted April 13, 2007 Report Share Posted April 13, 2007 I have a 2004 Audi A4 Cab which we are very pleased with.It is just out of warranty. Last weekend whilst driving along the Emission Control system warning light came on AND the ESP light came on - both together. Booked into local Audi dealer and they could not find a fault. They said they put it on the "computer" and there was no fault, htye tried to reset the system but it would not reset. They replaced the Air Flow meter. Still no different. I collected the car as they said there was no "fault", but the lights are still on. They want the car for another day, but I am reluctant to spend £75 per hour for nothing. Any one had similar or any idea's ? Someone told me to disconnect the battery for an hour, which i did. When i reconnected and started it up - no lights! - But went for a drive and they came back on. Link to comment Share on other sites More sharing options...
Milo Posted April 13, 2007 Report Share Posted April 13, 2007 Check your brake lights. If both blow together is has been known to throw up loads of warning lights. Link to comment Share on other sites More sharing options...
shark_90 Posted April 13, 2007 Report Share Posted April 13, 2007 Does your temperature gauge show that your engine gets up to temperature relatively quickly, and does it sit at 90 degrees once it is up to temperature? Link to comment Share on other sites More sharing options...
4RingsDH Posted April 13, 2007 Report Share Posted April 13, 2007 [ QUOTE ] Check your brake lights. If both blow together is has been known to throw up loads of warning lights. [/ QUOTE ] I agree, brake bulbs blown, or faulty brake light switch spring to mind immediately Link to comment Share on other sites More sharing options...
surfdude Posted April 13, 2007 Author Report Share Posted April 13, 2007 Thanks for the ideas .. The brake lights are fine .. And the engine warm-up seems "normal", it does sit around 90 degrees Link to comment Share on other sites More sharing options...
surfdude Posted April 14, 2007 Author Report Share Posted April 14, 2007 It seems that since i disconnected/reconnected the battery, the remote locking has stopped working. Is there something that needs resetting for this ? Link to comment Share on other sites More sharing options...
paul_tdi Posted April 14, 2007 Report Share Posted April 14, 2007 Try unlocking the car, turn ignition on then off them press the lock button. This should resync the remote, u will need to do it with all your keys. Link to comment Share on other sites More sharing options...
shark_90 Posted April 14, 2007 Report Share Posted April 14, 2007 The engine light means it's nothing to do with the brakes. They did the right thing by changing the air flow meter, as the air flow signals are used to calculate torque which can cause the ESP to throw a wobbly if the signals aren't correct. I can't understand why a fault scan showed nothing. If you have the engine light on, there MUST be a fault code somewhere. Usually you get a code on the Instrument Panel (telling you to check the Engine module) and then obviously in the Engine module. Try getting a scan done elsewhere? Link to comment Share on other sites More sharing options...
surfdude Posted April 14, 2007 Author Report Share Posted April 14, 2007 Thanks that has sorted the remote locking Link to comment Share on other sites More sharing options...
4RingsDH Posted April 17, 2007 Report Share Posted April 17, 2007 [ QUOTE ] The engine light means it's nothing to do with the brakes. [/ QUOTE ] I disagree! Although its probably fair to say that the brake switch may not be the cause, i have definately experienced an engine management light on due to a faulty brake pedal switch. Link to comment Share on other sites More sharing options...
a2nut Posted April 23, 2007 Report Share Posted April 23, 2007 I had the same problem with my A2. Kept getting sent away from audi and they just cleared the computer with no problems, but once out of the show room approx 10 miles away the light kept come back on. I then complained after several £110 diagnostics checks and they suddenly found a fault. The nox sensor had gone and a coil pack was breaking down on a cylinder £500 in total but all ok now ! Link to comment Share on other sites More sharing options...
Sparky Posted June 28, 2007 Report Share Posted June 28, 2007 [ QUOTE ] [ QUOTE ] The engine light means it's nothing to do with the brakes. [/ QUOTE ] I disagree! Although its probably fair to say that the brake switch may not be the cause, i have definately experienced an engine management light on due to a faulty brake pedal switch. [/ QUOTE ] That's what failed in my last TDI. Brake switch failed, causing engine management light to come on. Engineer first checked if my brake lights came on and then said it's the foot pedal switch. Link to comment Share on other sites More sharing options...
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