[pislique88]

Hi everyone.

I am driving a 2020 540xi G31 touring. Currently, I am having issues with the lane change warning system.

I checked fault codes with ISTA and the code is ;

804258 - Exterior mirror, right lane change warning reports a fault in the mirror.

I checked the cables and sockets on the mirror and nothing was looking off.
I changed the mirror glass to a brand new one.

I still get the same error.

After this, I used ISTA to test the plan to check the functions of the mirror.
When the test began driver-side mirror orange triangle functioned fine and was very bright. However, passenger side mirror's orange triangle light was very dim but still functions.

Does anyone have an idea why one side's light is super dim?

Any input is appreciated.

Thank you.

[JuniorTech]

try adjust sensor SRR in service function