Hello everyone! When bought 2007 XC70 there was no beeping while reversing, and when scanned with Delphi Ds150 i got park assist sensors 3-4 fault codes and i changed it. After change there was still no sound, and like a week or so yellow triangle showed up on dashboard with a fault screen that park assist needs to check up. When scanning with Deplhi, theres all 4 sensor fault codes and park assist module fault. Has anyone had similar problems with sensors and has a solution to it?