1
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 30 December 2019, 15:32:44 »
Is it possible to check the level sensors function by measuring the output signal?
- 24 April 2025, 04:22:43
- Welcome, Guest
News:
Please play nicely. No one wants to listen/read a keyboard warriors rants....
Show Posts
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
3
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 28 December 2019, 14:15:20 »
Got one here.According to RM cost shouldn't be more than £10.00.
Thanks! I actually bought one yesterday on eBay and it was £9.98, shipping included
If it doesn't arrive, I know where to find another one
4
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 28 December 2019, 12:29:01 »You know where to find original headlights, not new but in good shape with new adjusters.
Thanks, Jan, I really appreciate that.
Did you receive the new adjusters?
5
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 28 December 2019, 10:16:17 »
Thanks for all your valuable input!
I now have a much better understanding of how the headlights and the self adjusting level control system work and before the end of next year it should be resolved!
Happy New Year a few days in advance!
I now have a much better understanding of how the headlights and the self adjusting level control system work and before the end of next year it should be resolved!
Happy New Year a few days in advance!
6
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 27 December 2019, 12:15:59 »To clarify the Tech2 thing, the Tech2 cannot (directly) adjust the headlights. Thus, one is not required to fit or adjust them.
The Xenon units are adjusted in the same way as the halogen, via the manual adjusters that are on the top of the headlight units.
What a Tech2 can do, amongst other things, is exercise the motors (handy to make them run freer), and also recalibrate the level sensors (which indirectly can adjust the headlight height, but is not the approved way to set them).
HTH
When performing the manual height adjustment (via the adjuster on top of the headlight unit), should the motor be in a specific position (fully in/out/"middle", etc.)?
7
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 26 December 2019, 18:57:15 »The Depo lights require some fettling to fit the ballasts properly, but everything else fits fine including the motors and wiring. And if I can do it, a halfway competent garage should be well able...
I would find another
I suspect that they have trashed your lights and motors by not removing the transit locks correctly and not fitting components correctly. Which is worrying as the lights are supplied with clear instructions regarding the transit locks...
Did you use Tech2 when you fitted the Depo headlights and did the automatic leveling system work after the swap?
8
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 26 December 2019, 17:21:18 »And the metal rods they were attached to?
I cannot see any metal rod(s) looking into the headligth from the rear, in which of the "openings" (H7 main beam/xenon low beam, etc.) should I look to see it (if it is still in there
)?Is it just a straight single metal rod or does it have a specific appearance? Size?
9
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 26 December 2019, 13:26:56 »The Depo lights require some fettling to fit the ballasts properly, but everything else fits fine including the motors and wiring. And if I can do it, a halfway competent garage should be well able...
I would find another
I suspect that they have trashed your lights and motors by not removing the transit locks correctly and not fitting components correctly. Which is worrying as the lights are supplied with clear instructions regarding the transit locks...
I checked this and apparently the transport locks (cable ties) have been removed.
10
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 25 December 2019, 15:48:34 »
Does anyone with experience of replacing the headlights, have some kind of "step by step instruction" and/or important points to consider when installing the new headlights?
In particular, I think about the parts that deal with the automatic leveling system/motors and the manual height setting.
When the system makes its basic setting of the headlight height, at every start-up, I assume that the headlights should dip down and then raised to the correct position?
Can the installation of new headlights be done without Tech2 or is it neccessary to have it in order to reset the leveling system? Or can this be done some other way?
All information that can be used in my discussions with the garage who has done the installation would be highly appreciated
In particular, I think about the parts that deal with the automatic leveling system/motors and the manual height setting.
When the system makes its basic setting of the headlight height, at every start-up, I assume that the headlights should dip down and then raised to the correct position?
Can the installation of new headlights be done without Tech2 or is it neccessary to have it in order to reset the leveling system? Or can this be done some other way?
All information that can be used in my discussions with the garage who has done the installation would be highly appreciated
11
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 25 December 2019, 15:20:17 »Something has been cobbled then
It is very likely, I'm afraid.
Probably, it is about the workshop not being accustomed to handling this type of self-adjusting headlights.
Since you can hear the motors working but don't see the headlights moving, the installation must have been done incorrectly.
To find the fault, the headlights will probably have to be removed and refitted again. Will discuss this with the garage on Friday...
12
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 25 December 2019, 14:53:54 »Note, also, some of the cloned Chinese Tech2s that you can pick up sub £500 delivered do struggle to read some of the ECUs reliably. Though if yours was able to read it previously, it suddenly wouldn't stop...
The Tech2, owned by the garage, not me, is sub £500 bought on eBay and yes, it was able to read the headlight ECU previously, including the possibility to manually adjust the headligth motors.
Now it just states "No Communication With Vehicle" when trying to access the headlight leveling system (communicates with other systems though). Very strange indeed...
13
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 24 December 2019, 11:03:41 »With all the Omega's I've owned, never had a problem with headlight Ecu, are you over thinking a simple fault.
An intermittent fault would say to me broken wire/loose plug.
I really hope I am but why is Tech 2 no longer able to communicate with the headlight levelling system? When the original headlights were fitted, this problem didn't occur.
One consequence of this is that the levelling system couldn't be reset before installing the new headlights. Maybe this is causing the problems?
I believe the headlights have to be unmounted and fitted again, following some kind of "step by step" instruction to find out what is causing the problems. Not sure if this kind of guide is available on but I will I'll look through the forum when I have more time.
14
Omega General Help / Re: Xenon Headlight ECU / Tech 2
« on: 24 December 2019, 10:53:37 »Behind the right hand headlight, above the suspension pump (if fitted).
Access isn't quite a wing off job, but it helps
Thanks, then I know where to look (if needed).
Don't rule out the sensors though as they are both on the left of the vehicle and take a kicking in this weather with all the puddles.
Also are the motors correctly fitted to the new units
Referring to the motors, this is also something I'm considering. The work has been done by a small garage which had a lot of problems with the manual height adjustment of the new DEPO headlights (couldn“t be adjusted high enough). When the ignition is turned on, you can hear the level motors working but no movement can be seen, maybe because of jammed headlight inserts? The error message comes and goes in intervalls, just like the system is trying to adjust the headlights but for some reason doesn't manage to do so.
In either case, this doesn't explain why Tech 2 is no longer able to communicate with the headlight levelling system...Strange
15
Omega General Help / Xenon Headlight ECU / Tech 2
« on: 23 December 2019, 17:19:20 »
After having replaced both Xenon headlights, Tech 2 is no longer able to communicate with the headlight levelling system ("No Communication With Vehicle").
Communication with other systems work fine.
I also get an intermittent error message for malfunctioning headlight levelling system on the information screen in the car.
My first idea was that the front levelling sensor was causing this but then again, even if the sensor has gone bad, Tech 2 should still be able to communicate with the system?
Does anyone know the location of the Xenon Headlight ECU (GM part No. 90 565 31)? Maybe this part is creating the problems?
Any advice and suggestions will be greatly appreciated
Communication with other systems work fine.
I also get an intermittent error message for malfunctioning headlight levelling system on the information screen in the car.
My first idea was that the front levelling sensor was causing this but then again, even if the sensor has gone bad, Tech 2 should still be able to communicate with the system?
Does anyone know the location of the Xenon Headlight ECU (GM part No. 90 565 31)? Maybe this part is creating the problems?
Any advice and suggestions will be greatly appreciated