2006 BMW 325i Questions

All 2006 BMW 325i Questions

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I went ahead and replaced the blower motor and resistor and still nothing. The BMW dealership is now telling me that it can be IHKA control unit however, It does control all features and provides power to everything ...
When I put the key in, press the brake and push the start button, everything turns on but just cranks and won't start. Would I have to take it to a dealer or can I fix it myself?
Want 18 inch rims/tires on base sedan. Currently 16 inch tires. Can I put sport setup tires on base sedan-wider tires in rear and staggered setup?
When I reach 45 mph I hear a rattle in the engine that sounds like a marble. But when I am sitting still and rev the engine it does not happen? 150 thousand miles on car.
Replaced battery,Still will not start. What could it be?
square box with taller pole on right side there's something in the middle but I can't remember it and it wouldn't come on just now but it came on two days ago yellow and doesn't show up when I click through the comput...
It looks like cigar burns. No one has ever smoked in my car. I do have a sun roof and wondered if it could be from some electrical problem, but BMW is telling me no.
I had a battery installed at Firestone about 9 months ago and the BSD connector is not connected to anything. As I have recently learned,the new battery should have been "registered". At this point I do not know if ...
i checking fuses and i think i put the thermostat fuse in slot 68 - before i was around the block the thermostat light came on so i mapped everything and it looks like it should be in slot 69 can anyone confirm? i don...