- Thread starter gordon stephenson
- Start date
If it is the HID system as used on most VAG group since early days there is a calibration procedure in the diagnostics. Adjusting the screws without having it in calibrate mode will do nothing. There is a controller on each headlamp which remembers relative positions.
There are 2 ride height sensors, one front and one rear. The diagnostics would tell you if these are working properly. If not, you need to replace faulty ones. Then once there are no faults registered you go into calibration mode, make your adjustments, and then store the new position as reference values.
Also check if the "Dance" is working. Point at a wall, headlight switch on, start the car and you should see the dance as they do a sweep and settle in the remembered positions. If any of this isn't working you have a stepper motor not working. I will see if I can get a video of mine doing the dance to show you what I mean.
VCDS is your friend if you have access to it. There is a limited VIN version for £225 which gives you 3 VINS. It will give you all the info that VCG-Com will which is vastly superior to the standard OBD2 information.
There are 2 ride height sensors, one front and one rear. The diagnostics would tell you if these are working properly. If not, you need to replace faulty ones. Then once there are no faults registered you go into calibration mode, make your adjustments, and then store the new position as reference values.
Also check if the "Dance" is working. Point at a wall, headlight switch on, start the car and you should see the dance as they do a sweep and settle in the remembered positions. If any of this isn't working you have a stepper motor not working. I will see if I can get a video of mine doing the dance to show you what I mean.
VCDS is your friend if you have access to it. There is a limited VIN version for £225 which gives you 3 VINS. It will give you all the info that VCG-Com will which is vastly superior to the standard OBD2 information.
hotponyshoes
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I think it's only the touaregs with air suspension that have sensors on the front axel?
And the levelling is only for the xenon.
The touareg has a dual xenon/halogen arrangement and the self leveling is not active on the halogen main beam, only the low beam xenon.
Unless the OP has bi-xenon but then, if dipped beam is fine, it will be a mechanical problem with the shutter mechanism.
And the levelling is only for the xenon.
The touareg has a dual xenon/halogen arrangement and the self leveling is not active on the halogen main beam, only the low beam xenon.
Unless the OP has bi-xenon but then, if dipped beam is fine, it will be a mechanical problem with the shutter mechanism.
No, it's not that simple. A 2005 Skoda Superb (Passat B5) has sensors front and rear, many of the VAG platforms do. That one was Xenon/Halogen combi, same thing on a 2019 Golf. Unless the car is Halogen only it's a real bugger's muddle, hence having access to VCDS is really helpful. Tells you what modules are fitted and if they're all working.
hotponyshoes
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It's been a couple of years since I sold mine but I think the electrical system on the touareg was only shared with the phaeton.
Those 2 were not quite the same as the rest of the vag range
Those 2 were not quite the same as the rest of the vag range
hotponyshoes
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The vcds/vagcom would tell you what was fitted and if it was working but I think its only a single module on the light so if dipped beam is OK and main is out then I would be thinking it's a mechanical issue
Not always. The various VAG platforms do different things but normally if there is a faulty height sensor it just puts the headlamps into failsafe mode, i.e. on the lowest setting. The exceptions are Lamborghini (completely different) and the ones developed from the Bentley platform such as Phaeton which are also completely different.
But even with a no-fault situation there is still a calibration procedure which has to be followed or it just reverts. I've seen a few Octavias with the lights too high but the adjusters would all the way down. People thinking a simple adjustment will fix it, which it does initially until the ECU gets involved. It's also needed to know if the dip is a bi-xenon with a shutter that lifts when high beam is on. High beam is not always just the halogen part.
This is a quick scan of the module in question. You can sort of see what's going on even though there's no fault.
Address 55: Headlight Range (J745) Labels:. 5M0-907-357-V3.clb
Part No SW: 5M0 907 357 F HW: 7L6 907 357 C - THIS IS THE HEADLAMP AIM MODULE WHICH CONNECTS TO THE CAN GATEWAY AND REMEMBERS THE AIM POSITION. IT HAS TO BE PROGRAMMED AS AT THE BOTTOM OF THIS POST.
Component: AFS-ECU H04 0111
Revision: -------- Serial number: --------------
Coding: 01C600003F000000
Shop #: WSC 33361 790 00999
ASAM Dataset: EV_HeadlRegulVWAFSPt 002016
ROD: EV_HeadlRegulVWAFSPt_VW46.rod
VCID: 372B235DCFC4988356B-8062
Subsystem 1 - Part No SW: 8U0 941 329 HW: 8U0 941 329 Labels: 3D0-941-329.CLB - THIS IS THE INDIVIDUAL LAMP ECU FOR ONE SIDE, OTHER SIDE BELOW. SEPERATE FROM THE MAIN HEALAMP ECU.
Component: LeiMo links H01 0003
Coding: 8E0000
Subsystem 2 - Part No SW: 8U0 941 329 HW: 8U0 941 329 Labels: 3D0-941-329.CLB
Component: LeiMo rechts H01 0003
Coding: 8E0000
No fault code found.
Software Part Numbers 5M0-907-357 through 5M0-907-357-D ONLY
Headlight Adjustment
[Select][55 - Xenon Range]
[Basic Settings - 04]
Group 001
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
- The meas. block field now shows "Wait" and should switch to "Adjust Headlights" then (this may take up to 10 seconds).
- Adjust the headlights using their manual adjusting screws as referenced against a suitable aiming target.
The adjustment should now be learned.
[Done, Go Back]
Don't forget to check/clear fault codes afterwards.
[Close Controller, Go Back - 06]
