X5 front sensors
 

Can anybody help me with a slight problem with my front sensors on my 2002 X5? The problem I have is they have been working fine for the past 3 weeks sinse ive had the car then today the PDC button in the car is flashing and the front sensors have stopped working, is this something that can be reset or do I need new sensors all round? Ive looked at the sensors and they have white faded patches on the bottom of them, is this common?

Thanks peeps

:cool: Madarris