During the last 2 months the alarm has set off while charging our PHEV in our garage. For no obvious reason the alarm suddenly sets off. The car is locked and the garage is locked too. After unlocking, disconnecting and then reconnecting the charging cable the charging continues as if nothing happened. Has anyone else had the same experience ?

Not had this. Is the car superlocked (double-click locked to activate volumetric sensors in the car)? Fly in the car?

The old L322s had an under-bonnet alarm sensor and that could go off randomly if it wasn't quite set up correctly - very easy fix (just find the sensor and adjust it. No idea if this is the issue though.

Thing is I thought of that. After the first episode, only single locked while charging in the garage. There was no alternation in the voltage and the fuse did not blow. No record in the car why the alarm set off.