Why would my doors lock when I press the rear hatch open button. The top half of the hatch unlocks allowing me to open it. but then all the doors lock, and the lower half of the rear hatch wont unlock. I then have to press the unlock button again to allow me to open fully. Strangley if i just open the top, and then close it all the doors seem to unlock.

Nearly had me locked out this one. I left the bloody key in the ignition the first time. Soon learnt not to do that again.