Symptom, Upon locking the car I got a double pulse, from past experience I diagnoses the infamous flexible bit of the harness (pass side front door wasn't locking), poor design (should have used more flexible wires but that would have added £1 to manufacturing costs)

I replaced the D/S 3 years ago and bought 2 harnesses at the time so had a spare in the loft, now fitted and all good. I'm going to repair the removed one as a spare

Edited 19 minutes ago19 min by Crucian

1 wire failure and 4 waiting to happen (as well as those we cant see under the wire insulation)

New harness replacement is now £190 🙄