Just throwing this out there, as it happened to me on my E93. Do you have aftermarket puddle lights? After I installed some cheap ones, my CA went haywire. Swapped the OEM led puddle lights in and everything was back to normal. Interference from the non shielded Chinese junk I guess.
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E46, E60 M5, E93 M3, F15 X5
IG - @thebimmerhaus
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