Question about 2002 Audi A4
I have an 2002 Audi A4 with automatic headlight dimming. I removed the entire headlight assembly to replace the bulb. When I put the unit back, I now get an error on the status display on the dash that represents "Dynamic Headlight Dimmer Control not Functioning" in the owners manual. There is only one connector on the assembly and it is fully plugged in
For some reason, Toyota chooses to wire their headlamps differently than domestic cars, with dual fuses for the headlamps, and a common ground for each headlamp...The reason that the lamp was dim is the bulb was getting power thru a "backfeed" condition, due to the poor ground. The fuse may have blown due to the poor ground, also.
Posted on Nov 30, 2008
There are two adjustment points (screws). For example left headlight: you will see one point near the end of left wing, at bottom side through a wing hole. This is for vertical plane headlight beam adjustment (up-down). Another one point is against water radiator side. This is for horizontal plane headlight beam adjustment (left-right).
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Posted on Jul 23, 2009
At least on the driver side, there really is no reason to remove the entire headlight assembly. I was able to swap out the bulb fairly easily but simply removing the dust cap, popping the connector off the bulb, and then undo the clip holding the bulb in place. The just reverse order to install the new bulb. Took about 3 minutes.
Posted on Dec 13, 2009
sounds like a fuse is blown, not sure weather or not the fuse for the lights are inside the car or under the hood. start there and if you dont find anything check the wiring. after that replace the bulbs.
Posted on Jan 28, 2010
you have to loosen the whole headlight assembly to open the covers behind the lights to actually get to the bulbs. 4 screws, 2 are on the top of the assembly(phillips screws) the other two are hex and attach the bottom of the assembly to the car. somewhat difficult to see but look behind the assembly and down into the compartment and loosen the screws(they don't fully come out) just enough to pull the assembly out. open the black cover behind he low bean and there is the bulb
Posted on Feb 05, 2010
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Unfortunetly you cant get into the lens to clean it from the inside. The "fog" up that you have is moisture that gets inside. Usually you will have to replace the headlight itself. If thats the case, you can get them used or from a salvage yard if you dont want to spend dealer price.
Posted on Dec 28, 2010
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