Greetings.

Just a reminder that if you have a bunch of weird electrical gremlins, you might consider replacing your ignition switch- particularly if its age is unknown. It's a common failure point on these cars.

my car '05 X5 3.0 w/125 miles. I have owned it 1.5 yrs.

All at once, I had:
1. seat belt chime /light would not stop even if all seats were buckled
2.. Air bag light
3. Power to radio would pulse and eventually turn off
4. No ambient lights in steering wheel
5. problem with rear wiper
6. MFL errors on scanner (steering wheel)
7. interior lights would stay on..

I replaced the ignition switch (good videos on youtube), took an hour, and all elec issues are gone and car is back to normal. I replaced it with a Febi brand from FCP Euro.

The ignition switch had been replaced before. The bad unit I pulled out was an OE BMW part with a 2012 date code.

Not sure why these ignition switches fail so often.