Lictronic Problem

[steve986s]

Just had 80000 km service carried out. Drive shaft boots were also renewed as they had split. I noticed later that when I switched my headlights on (Lictronic - Factory fitted) the auto levelling function did not work, i.e. the beam normally moves up when the headlights are initially turned on. Consequently the headlights are set too low on dip beam. Does any one know how the self levelling actually works? I know that it is a requirement with this type of headlight to prevent dazzling oncoming traffic due to their brightness. Would I be right in assuming that a load sensing valve/switch located on the rear suspension operates the auto levelling setting? Any one got a wiring diagram? I suspect that something has not been re-connected following the work on the rear drive shafts..? Or any other ideas? I have manually re-set the height of the dip beams but would rather "do it right." I have had both headlights out & they are fine, fuses all ok. I will be going back to my Porsche workshop if all else fails.

[Tool Pants]

Strange. My only experience is with the retrofit kits. The low xenon beam moves up even without the suspension sensors if the control unit is installed.

With the factory installed lits there is a sensor on the left front and left rear suspension. There is an electrical connector to the sensor. Check to see if the rear sensor is hooked up.

I can't find a good picture of the rear sensor. This is the front but the rear looks just like it.

[steve986s]

Thanks Toolpants! The rear sensor does look the same (Did'nt think there were 2 of them). I tried to disconnect the plug from it but its awkward to disengage the retaining lugs & get a good grip to pull it off. I don't want to break it off :-) But I will check out the front one tomorrow, maybe it was disconnected? I'll keep you posted. I have to take the car back in 2 weeks for a warranty repair, (slight coolant seepage at the LH cyl head gasket - apparently a known fault?) so if I still can't fix it my shop will. They are really good, Raffay Porsche Hamburg Nord, recommended to Porsche owners in Northern Germany.