mkoneman Posted March 10, 2007 Report Share Posted March 10, 2007 hello to all this is my 1st post, i have a '97 4.2 A8 and i have a problem where the warning light on the dash is telling me i have a light out when all of them work fine!!! i have tried the connections on the cluster and replaced all the bulbs anyway common problem?? please help before i take a match to it Quote Link to comment Share on other sites More sharing options...
ronmcl Posted March 12, 2007 Report Share Posted March 12, 2007 Welcome to TSN mkoneman! When you changed the bulbs did you check that the contacts were completely clean? A little bit of corrosion can still pass enough current to make the bulb light up and at a glance seem OK, but the drop in current (and an associated slight reduction in brightness) can be enough to trigger the fault code. Don't know if vagcom diagnostics can pinpoint the fault location more accuartely than the dashboard display, but I'm sure others here will be able to tell us! Quote Link to comment Share on other sites More sharing options...
kite Posted March 12, 2007 Report Share Posted March 12, 2007 I had this fault on an A4. My problem was a dirty connection in the rear light, but in the opposite one to the warning.... Quote Link to comment Share on other sites More sharing options...
SneakyMcC Posted March 13, 2007 Report Share Posted March 13, 2007 Welcome to TSN mkoneman Quote Link to comment Share on other sites More sharing options...
showtime Posted March 13, 2007 Report Share Posted March 13, 2007 without wanting to call you daft have you checked the number plate lights? they are usually in the same circuit as the rear sidelights & are the cause of most of these type of complaints where i work Quote Link to comment Share on other sites More sharing options...
sloss Posted March 14, 2007 Report Share Posted March 14, 2007 My Merc (am I allowed to mention that on here?) was showing a light fault , intermittently for ages and I could find nothing. Eventually I remembered I'd changed a bulb and on examining both sides one was a 6w and one a 10w - both looked the same. That was enough to trip the alarm. I'd renew all the bulbs with new ones of same make and (obviously now) wattage! Quote Link to comment Share on other sites More sharing options...
rob77 Posted March 14, 2007 Report Share Posted March 14, 2007 you dont have LED sidelights do you? Quote Link to comment Share on other sites More sharing options...
mkoneman Posted March 15, 2007 Author Report Share Posted March 15, 2007 no they are all standard bulb, but i will have a check on the wattage tho i dont think i checked that on the sidelight, yes the number plate light do work cheers for yor help Quote Link to comment Share on other sites More sharing options...
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