Audi Q5   Controls   Doors and windows  Child-proof catches
The child-proof catches prevent the rear doors being opened from the inside.
Take the emergency key out of the remote control key Link.
To engage the child-proof catch turn the ignition key in the direction of the arrow.
To disengage the child-proof catch turn the ignition key in the opposite direction of the arrow.
When the child-proof catch is engaged, the inside door handle will not function, and the door can only be opened from the outside.