I have the same vehicle. The manual page 15 , To enable two stage unlock : 1. Turn headlight switch off. 2. Cylcle ignition switch from Lock to On 3 times in 5 seconds, leaving it On. 3. Pro will appear on the multi-infomation display continuosly for 5 seconds. 4. Operate the power door lock switch to the Unlock position within 5 seconds of Pro appearing. The turn signal lights will flash once to confirm that the two stage unlock has been enabled. 5. Turn ignition switch Off and test the remote controlls.
To Disable two stage unlock, repeat the above proceedure. Have been thinking of activating mine, but having problems with integrated relay, intermittant horn chirps twice & doors not locking with new Fobs. Car locks with key, yet on occasions still locks with horn chirping twice.