Ambient Lighting LIN Bus Error

[rbl1]

After replacing the battery, I got a LIN bus error on the ambient lighting on the rear right door. Everything else works fine, the error is permanent and cannot be deleted.
Does anyone have any ideas where to start looking?

 

[oppeto]

Try to write a new address in the ambient lighting LIN. Depending on the car, this may be MBUX or a separate control unit for ambient lighting.

 

[rbl1]

First of all, thanks for the solutions. This is the error code U109388. Are the control units installed separately in the door?

 

[oppeto]

What car? Where is the fault code stored? Enter VIN here for better help.

 

[Benza]

What vehicle are we talking about? Is LIN addressing restored? Each door is equipped with a door control unit, to which the ambient lighting is connected. Maybe this will help.

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[rbl1]

VIN number is WDD2132041A529957, fault code is stored in N162 (AML).

 

[oppeto]

Have you read this fault code using Xentry? If yes, there is a option to restore the LIN address. Try this first. If it's not there, it'll be in HU.

 

[xeoninside]

Try the learning process in the Xentry adaptation tab. The LED may burn out if you see fewer users than the default.

 

[rbl1]

Does the door control unit also control the ambient lighting? And if so, can you connect it to the left side as a test?

 

[xeoninside]

Does the door control unit also control the ambient lighting? And if so, can you connect it to the left side as a test?

Yes, you can connect the light module to another connector to test it. Although all external light modules are controlled by the ALC module using LIN, in some models they can be connected to the door control units, but the LIN bus wires are still routed to the ALC unit.

I would ignore the error if you see all the LEDs light up and change color correctly. I have also seen constant errors on one LINE on brand new cars and all the LEDs still work fine.