Unlocking the tailgate with a key button
There is a specific button on the key to unlock the tailgate only.
Unlocking the tailgate by pressing a button:
Press the key's 
button.
button.The tailgate 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 tailgate handle to open the tailgate. If the tailgate is not opened within 2 minutes then it is relocked and the alarm is re-armed.
Power operated tailgate*
Hold the key's button depressed (approx. 1.5 seconds).
button depressed (approx. 1.5 seconds).The tailgate is unlocked and opened, while the side doors remain locked and their alarm functions armed*.