Unlocking the tailgate with the key button
There is a specific button on the key to unlock the tailgate only.
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.
You can open the tailgate by gripping the rubberised pressure plate underneath its lower edge.
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*.