2000 S80 t6 security malfunction

[Camilla Barnes]

Security locked me out, killed my radio & interior lights, plus ate my cd.

[oragex]

Depending on how the software is set (it can be changed as per owners request), the doors will self lock if the engine is left running with none on the passenger seat. You can still open the door with the key inserted in the door lock.

Also I suspect your model has the very common siren module issue, the module can be disconnected.