Questions & Answers for: BMW amp knobs Cars & Trucks

...knobs and no display), then your car also has something called a "Final Stage Unit" which is an electronic part that the system uses to change the motor speed. You may not even have a blower resistor ...

...is the component that fails but as always you may want to check your fuses. I checked the 30 AMP fuse in battery compartment area (there are 4 fuses for radio (fuse #43 in glove box area is ...

and make sure all wires are good. radio could be bad and need to be replaced. if it is hooked to an amp make sure amp settings are correct and wiring is correct and good . (no shorts

...it will tell you which fuse goes where. check that fuse, or replace it. I cheat and put a higher amp fuse in all my fuse spots. fuse?? wire come adrift?? ,bad earth on circuit?? Took dash ...