Vauxhall ASTRA Owner's Manual page 46

To close:
Close luggage compartment using the
handle on the inside of the tailgate.
Do not operate the button beneath the
handle when closing. Otherwise the
luggage compartment will once again be
unlocked.
To lock
Close doors, luggage compartment and
tank flap.
Remote control with mechanical key
Press button p on remote control.
Open&Start system with electronic key 3
Press button p of the electronic key remote
control or touch sensor in handle of one of
the front doors. The electronic key must be
recognised in the external reception area.
It is advisable for the driver to keep the
electronic key on his person.
Keys, doors, windows, TwinTop 45