2000 S80 Dumb car keeps locking itself
 

Our Vehicle seems to have taken on it's own spirit. Standing in the garage suddenly the lights flickered on and the car locked itself. Now it seems to be repeating itself even though the car is already locked.
Can anyone help me here.

Needs an exorcism!

Have a spare set somewhere with the button mashed or a faulty remote?

Disconnect the battery and then reconnect and still happens?

Wonder if the battery on the remote is going! If its starting to go, it might make it do that.

Alarm siren might be bad causing the issue.