Xenon self levelling sensors - Help please

[GardinerG]

Could you guys with VAG-COM do me a big favour? I'm getting some funny probs with the Xenon Self Levelling system, probably in relation to the rear level sensor (nearside rear wheel arch).

What I need is a comparison for voltages on the level sensors when the car is on a level surface:
Module 55, Measuring blocks 002. DON'T USE Basic Settings unless you want a recallibration!

Code: Select all

Friday	2	November	2007	18:01:16	
4Z7 907 357 		dynamische LWR       D09	

Group A:	'002			
       Voltage   Voltage	Actuator Motor  
TIME   sensfront sens rear Activation	
STAMP  V         V         %	       
0.01	1.82      4.34      49.6

I believe the sensor readings should be between 1.6 and 3.5V normally.

Looks like the rear sensor reading is too high - when I jack the car up I can recallibrate the Xenons, but not normally. I suspect it's a dodgy sensor, but it could be just that it's running too low with the KW.

If anyone has a pic of the rear sensor (nearside) pic (preferably with the wheel on the ground). It's visible from under the left exhaust tip.

Cheers!

Grant

[bigh]

Happy to help with the picture Grant, if only I knew what exactly I was looking for under the car. Any pointers and I 'll snap away for you.

Howard

[GardinerG]

Happy to help with the picture Grant, if only I knew what exactly I was looking for under the car. Any pointers and I 'll snap away for you.

Howard

Best I can offer are these pics. I will take a proper pic and upload soon. It is linked to the rear of the rear nearside, lower suspension arm. You will see a metal link connected to a black servo like arm. IIRC it's just behind the rear left silencer.

Cheers

Grant

[bigh]

I think this is right?

[GardinerG]

Yep, that's the one! Cheers Howard. Mine is quite a bit up on that. I will have to take a pic and post it. It proves the point that when stock the black bar is almost horizontal. You don't have VAG-COM do you?

Thanks for your help! IOU !

Does anyone have the Voltage readings?

[bigh]

Forgot to mention the car is on a slight downward facing driveway, will that effect the angle of the balck bar? If so i can move the car and take another piccy

No I'm afraid I don't have VAG.com (keep meaning to get a copy though)

[bigh]

Grant PM'd you

[skiwi]

should be between 0.5 to 4.5v for the level sensors.

if there is an issue with the range of the sensors, it should throw a code into the module 55

[RobRS]

Hi Grant,

I've PM'd you.

[GardinerG]

should be between 0.5 to 4.5v for the level sensors.

if there is an issue with the range of the sensors, it should throw a code into the module 55

Hi Skiwi, thanks for that. There are currently no errors stored, however after getting the car back from the suspension work I had:
00774 - Level Control System Sensor; Left Rear (G76)
28-10 - Short to Plus - Intermittent
00776 - Level Control System Sensor; Left Front (G78)
28-10 - Short to Plus - Intermittent

I put this down to the work, as when I reset the codes things were ok. Now it's dark I noticed the real problem was that the headlamps were always pointing fully down so I tried to move the lamps to the adjustment position and check them. But I can't cuz I get "error" when going to basic settings in group 001. When I jack the rear of the car up, I can. This just means that the lights will be pointing more down than they should be and that the Full beams point slightly up.
The values I gave (range 1.6-3.5 for callibration) were from Ross-Tech's label files, so I am wondering who is correct? I guess the acceptable range for in motion would be different to that when "level" for setting.

Hmmm, I've taken a pic of the rear sensor and will upload it soon.

CheeRS

Grant

[GardinerG]

Hmmm, well I've been looking at the pic of my rear sensor and it looks like the sensor itself is pointing down/not straight:

I will have to get the wheel off and have a closer look!

P.s. the leak is from the now unused DRC pipes.

[el_ringo]

Did you ever get a fix for this? I have been able to adjust my xenons in the past with no problem but this week it won't allow me to store the new position. I too am on KWv3s that are less than 10mm lower than stock.

Here are my readings...

[Shoppinit]

What are your actual symptoms? Are you getting the "headlight range not set" error message when you start the car?

[nekrum]

Had an issue with mine, kept getting a warning on the dash. The wires as below had a nick in them which caused an intermittent fault?!.. Had to have a really good look to spot..

I think this is right?

[el_ringo]

I can move the light level with no issue. When I then try and get the computer to store this postion I get the error so then that throws that headlamp warning which is annoying me.