My near side light points down quite a lot more than the o/s but when i turn my lights on they both line up, but then it drops back down again, is this a motor problem or i know they can be aligned via vag com, could that fix it?
It's probably a corroded connection in the motor unit.
A couple of options.
1. Spend ~£80 or so on a new motor unit from Audi
2. Take it out and carefully dismantle it and clean all the contacts with switch cleaner. It's VERY fragile though!! Took about an hour for both when I did it.
Option 2 certainly worked for me as of 6 months ago.
Cheers,
Sounds like you have a sensor problem here not a motor problem. The angle of the light is taken from 2 sensors from what i remember. One on the rear of the car and one at the front.
Mine is doing exactly the same thing. There is a plug on the inside of the lamp unit, (nearest side to the radiator) unplug this to temporarily solve the problem. Turn the lights on, wait until they are level and unplug. They wont auto-level after that and will remain as set. I'm looking into the sensor problem with mine and will let you know the outcome.
G
Is it possible to buy a new adjustment motor from the dealers...I never had any luck in finding one...had to buy a brand new headlight
doesn't sound like a motor problem for the o/s light given that it is travelling up and down suggesting the motor is okay. the motor in the n/s (i.e. not moving) unit sounds like it is not operating though.
also i suspect it is not a sensor problem, i have recently replaced the knackered one on the rear suspension arm and the one on the front suspension os okay, yet i still have the same issues where the headlights drop after a few minutes running.
Possibly it could be the auto levelling control unit.
Motors can be bought seperately, you must have either crap eyesite or totally crap dealers as I just found it in etka in 10 seconds flat, lol
I don'y get any of the above. Common sense would tell me that the sensors control the headlights (up & down) for lets say towing a caravan. I would assume that the sensors would be what would determine the level of the light not the motor. Motors unless they have sensors built in which ours don't, usual are what physically move the item in question.
Maybe i'm way off here but wouldn't it be the sensors telling ECU to level lights, not the motor?
I've unplugged my motors for now, but would like them back on. So is there anyone here who's had this very same issue, and fixed it??
G
If both lights were drooping, I would suspect the sensors on the suspension, but as one is behaving properly I would suspect the motor unit itself.
The motor units do have a sensor built in. It's a little linear potentiometer which feeds back the height that the lights are set to, so the unit acts like a servo.
It is a cheap little open faced pot which seems to be prone to wearing out or getting dirty. My droopy headlight was cured when I dimantled the motor unit, cleaned the contacts, resoldered some of the PCB joints. I also carefully dismantled the pot, cleaned the slider and resistance then reassembled it.
Since then my lights have not drooped once.
Just takes some time, simple tools and a delicate touch.
Cheers,
Well I found the headlight range control motor ages ago my self on VAGCat.com but when I asked the dealer they claimed that it wasn't possible to order that single part...I had to order the whole headlight unit (and for the nice and fair price of 700 quid I (naturally) went online and found a spanking new headlight (complete Hella unit) from a UK seller who apparently didn't know what he was selling; he gave it to me for 160 pounds...Never did find another motor, used or new and I searched for ages...
Well, I hope threadstarter get it sorted...Good luck!