Note
If the car's batteries go completely flat, it will not respond to any key.
If the car has been turned off for a long time, it may take several seconds for it to unlock. This is because the car needs time to turn its systems back on, to recognise the key and to give you access.
Locking not working
If the car won't lock, check that all of the doors are properly closed.
Rear doors not unlocking
If the rear doors don't open when you pull the inner door handles, make sure the child lock isn't active and that you pull the handle twice. The first pull unlocks the door and the second pull opens it.