The sister has a 2010 x1, which had a few errors popping up. The errors were the doors were open and it was flashing constantly but not staying on and off course the cursed parking sensor failure.

Myself and the buddy had a go at repairing it as he is good with electronics.

On removing the footwell module there didn't seem to any sign of a loose pin or dry joint in the unit. Since the part is around €500 to replace we figured it was worth a go.

He re-soldered the pins and since doing that it seems to be working again. It might be worth a go for others aswel before replacing.

Parking sensor on route so hopefully that's the car done for awhile.