e46 cab rear parking sensor

[gary hubbard]

can any one help, wen i put car in reverse the parking beeb stay on . wot do i need to look for . thanx gary

[Klankie]

Maybe stating the obvious, but , Dirt on one of the sensors?

[paoloh]

Has it been painted recently?

[stevesuk]

When my 320Ci did this, it was down to damaged wiring. If the rear bumper on the cabriolet is anything like the coupe, you can inspect the wiring to the 2 middle sensors by crawling under the rear of the car. On mine, one of the wires was visibly damaged. I unplugged the wiring from the sensor to give me a bit of slack to work with, soldered the damaged bit, and then taped it up before reconnecting.

Been fine ever since.

The outer two sensors look a bit harder to get to, you might have to drop the bumper?

Cheers,

Steve