Adaptive headlamp fault

[gejettest]

I thought I posted this, not sure if it did.

2009 X5 E70 adaptive headlight fault.
Scanner says bad communication between footwell module and left and right headlights.
I don't want to throw parts at this. Why can't the fault be located exactly.
All components inspected for water, corrosion.
All look good.
Thoughts?

[Leslie]

Are the headlights moving when you turn the wheel, easy to see at night when parked

[gejettest]

No they do not, hence the fault.

[Leslie]

I dont know tbe answer but if there is no comunication that module has likely failed otherwise it would be able to tell you whats wrong.if it was s light issue it would be unlikely to be in both lights .
If its a cheap scanner though it may simply not be good enough to scan that module .

[X5Sport]

The module uses the LIN bus and CAN bus to communicate with various other modules, including lighting. If the wiring is all intact then it points towards a module failure.

Wiring diagram>…..

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