Legend Door Lock Failure

I had a similar issue with my Legend. It started with one door. It could be the door switch, but have you checked the wiring? Sometimes a loose or corroded connection can cause these problems. Does the car alarm still function correctly when you manually lock the other doors?

Thanks for the quick response. When you mention 'the door switch', are you referring to the car sensor within the door that detects whether it is open or closed? I'll test the car alarm and report back. Were your symptoms exactly the same, and did the central locking also malfunction?

Yes, I mean the sensor inside the door. The central locking completely failed on that one door; the others were working fine. The car alarm was also acting up intermittently. In my case, it was a defective plug connection. I took it to a workshop because tracing electrical faults can be a pain. They sorted it quickly, so it might be worth a professional check.

Thanks for the advice. I had it inspected by a professional, and you were right, the cable or plug connection was defective. The repair cost 95€, which was acceptable. Thanks again for your help!