[Node]

If it has Webasto (independent heating), I would try to disconnect that first. On older cars waters gets into it and produces all kinds of fun.

[djdum]

Try to disconnect ABS Unit. If it start to die, it can block communication.

[nek13]

Try to disconnect ABS Unit. If it start to die, it can block communication.

it's a 46th, so if the abs is dead we need to have ecu communication that's k-line

better to check for food in obd:
pin 1 +12 t15,
pin 4/5 -12v
pin 16 + 12v t30

[lustek]

Hi,

I did like Fatalix said. Start to disconnect pins in X183 and it work.
After removing secondone communication alive.
Unfortunately pins in plug are not signed. 
I thought that I will have errors like "no communication with control unit" but no, all module respond propelly.
I got one error in KOMBI internal fault and I suppose that is the problem. Today I will try with instrument from junk. We will see...

[Node]

I don't think that is related. Most probably someone changed mileage in a crude way. Seen plenty of those and all had internal fault. What you should be looking at is the control units tree. And look for which unit which should be there is missing.

Another try could be if wires are different colored then to look into schematics for X183 and see which wire matches the color.

[lustek]

Could somebody decode that VIN? Every know to me online decoders don't recognize VIN.
bmwetk.com found it, but don't show equipment.

KK07032

[Node]

VIN decode sent by PM.

[lustek]

So based on decoded VIN and X183 pinout there should be 8 modules/connectors connected:
- OBD socket
- Airbag
- Instrument cluster
- Xenon left and right
- ABS/DSC or ABS/ASC
- DDE
- Steering angle sensor

Connecting every pin in X183 and disconnecting above modules (OBD and KOMBI must stay connected) should indicate with modul is faulty yes?

[lustek]

Mission accomplish.
Xenon light faulty.