Many thanks for a very good explanation!
Carly shows mine E60 (2004) the following PDC fault code:
I have two questions to you and would appreciate your reply:
(1) which type of E60 sensor should I buy? I checked some videos about how to replace the PDC sensor and it appears the older E60 had a different form factor than you showed in the links. Does it matter which kind to use as long as it is for E60?
(2) You mention the front PDC sensors could be assessed by removing the front headlight. Have not done it before. Which way is easier, in your opinion, by removing front bumper or headlight?