Double Locking
When double locking is engaged, the locking pin in each door is disengaged from the lock by a mechanical coupling. It is no longer possible to unlock the vehicle from the inside using the handles or from the outside. The fuel-tank filler door is locked.
Double locking is only possible with terminal OFF and the subsequent opening of one of the front doors and with the driver's door closed. With the driver's door open, there is no action in response to the double locking operator request.