headlights aiming to low and not very bright
 

So another little thing on the S8 is that the lights aim to low, country road driving at night is down to 20mph ish as I just cant see the road ahead! plus the lights are not that bright, I remember driving my Dads 56 plate S8 years ago and being amazed by the headlights! at the moment my Mondeo ST TDCI has better lights!
Any Advice on this? I know they are self leveling lights so only adjustable through VCDS which I have But after a play around the other eve I cant really get anything done, must not have understood the description of how to adjust properly.

Cheers!

As they are self-leveling, it could be a suspension-related issue. Have you scanned the car yet?

I don't remember seeing a setting for adjusting the beam height in VCDS - that will probably be two physical adjustment screws on each headlamp unit.

Yep I scanned the car and nothing pops up for suspension at all.
I did screen shot a thing a guy put up about re coding the lights by changing the values. I had a little play but no joy. I will have a look for some adjustment on the units themselves in the morning.

"Not very bright" could be something as simple as a failing xenon bulb or even the fact that your headlight glass needs proper cleaning and re-sealing. I just had my D3 headlights cleaned and re-polished by a company who specialise in it and did notice and improvement - D3 ones are particularly prone to getting very rough along the top edges

Oh ok.
Still they are aiming low though. Vcds goes through the motions of raising and lowering ok then they reset in delivery spec whatever that is.

Open the bonnet and have a look, there's some height adjustment screws in there.
I had this problem after an MOT at an independent who kindly 'adjusted' them as 'they were to high'.
I think they treated it as if it was a normal car, after which the beams were insanely low. It's an easy adjustment, I did it :D

Nice one il have a look in the morning cheers!

I adjusted the height of mine last night. The MOT tester has a 'thing' about adjusting them too low and I couldn't see where I was going. A 6mm allen key is required and just turn the hex_screw until they're high enough without blinding oncoming traffic

Please don't do it without VCDS, you have to set the headlights into adjustment mode first.
Your problem could be simply due to the need of adaptation.

I assume you dont get any Adaptive Lighting Malfunction messages on the dash??

If nothing helps I can send you a spare Xenon Range module to see/test it and either eliminate faulty module or find the problem with it.

Inside the headlight you also have little electric motors, usually they either work or not, but you never know, it could be them, but to be honest I wouldn't be surprised if adaptation/headlight adjustment would sort it out.

Procedure here
http://wiki.ross-tech.com/wiki/index...daptive_Light)

Are there are faults within module 55 ??

No I haven't got any faults in vcds for lights.
The only 3 faults I have are hvac, tpms and the parking module.

You mentioned they do go up sometimes, do they go to the level they should be at or just a tiny tiny bit up and then they drop to ridiculously low level??

Try going through the procedure of adjusting lights as per link above first if no errors at all.