BMW Car Magazine

Tried the ticking method and all are ticking, but still every now and then they go faulty....

Thanks, by intermittent i mean some times they work ok and sometimes they give a continuous beep and some times a false reading, sounds stupid but it seems that once the car warms up they work !!!!!!! Confused? so am i !!! Rgds Dave...

Sorry if this has been asked before but i have E46 2003 316i (1800cc) saloon with intermittant reverisng sensors, any ideas how to identify the defective unit? I have listened and each sensor is "ticking"....