I have a 2010 328i that makes a high pitched tone as soon the key is inserted in the dash and does not stop after starting the car, turning on or off the radio, turning on or off the AC/heat, adjusting vent fan speed. Nothing changes the sound. The only thing that stops it is pulling the key...

Hey guys so I had my subwoofer directly wirried to the wires that go to my hardon kardon amp in the trunk of my 2014 bmw 435i. we went to go plug in the on off wire and without a sound or blink the radio stopped and the car said no tone!!! there is no sound in the car not from the door seatbelt...

Hi, this is my first post. I bought my 04 330xi about a week ago. I love it soo much, but I feel that the owners manual leaves a lot to be desired. I have found in more than a few places that the owners manual for some options just say "Take to your local BMW center." And I'm not about taking it...