Press the remote control key's button.
The boot lid is unlocked but remains closed.
The side doors are still locked and the alarm is armed*. The lock and alarm indicator on the instrument panel extinguishes in order to show that the entire car is not locked.
Lightly grasp the rubberised pressure plate beneath the boot lid handle to open the boot lid. If the boot lid is not opened within 2 minutes then it is relocked and the alarm is re-armed.