It's the symptoms of a failing ignition switch.

One test you can try though it's not fail proof is to turn on the ignition (not start car) then open the visor and turn the mirror to turn on the light.

If anything odd happens (or doesn't eg light doesn't come on), it's basically a sure thing it's the ignition switch.

Example of odd things:

Rear wiper crazy
Wipers wipe when you turn on vanity mirror
Abs light on. May dim when turn on mirror light
Transmission light on but shifts ok

Every one of those and many more area ignition switch symptom.


–awr–

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)