After a week's holiday (without the car) I used the remote as usual to open the car. Once I was inside inside, the car kept automatically locking and unlocking on its own and the lights flashed. Then everything stopped. Now, the drivers door is permanently unlocked (I cant lock it). I've tried the 2nd remote in case the remote battery was dead but it doesn't work either. The instrument panel is blank, the remote does nothing. Everything seems to be dead. Could this be a safety thing or a dead battery? Help please