Door locks – locking and unlocking by a key
Cars with system of protection of a luggage carrier
The main key approaches any lock. An additional key it is impossible to open a trunk lid.
Therefore to protect the objects locked in a luggage carrier, leave to personnel of the parking on duty only an additional key after you parked the car and you leave it.
As doors and a trunk lid can be blocked without key, it is always necessary to carry with itself a spare main key if you forgot a key in the car.