Mercedes GT Roadster Door Lock Issue

Sounds like a dodgy door sensor Given the mileage, the wiring harness might be getting brittle Check the door latch connection first Is the car alarm acting strangely in any other way Think of it like a garden hose a small kink can stop the whole flow

Good analogy The alarm seems okay otherwise, no random triggers When you say 'check the door latch connection', are we talking visually inspecting the wiring harness for obvious damage, or am I diving into multimeter territory

Visually inspect the wiring first, look for frayed wires or loose connections If nothing jumps out, then yeah, break out the multimeter to check continuity If it's intermittent or you are not comfortable with electrics, it's probably best to take it to a workshop

It was indeed a broken wire in the door sensor wiring harness, just like you thought A quick trip to the shop set me back 95€ and they fixed it Car locks like a dream now