[200q20v] Central Locking

[RICHARD MEZIC]

Opened my '91 200 wagon last night and all the locks unlocked except the
rear hatch.  I hear the motor/pump running but it doesn't activate the rear
lock.  (Boy, did I look stupid driving with a suitcase in the passenger
seat, other luggage across the back seat, and nothing in the cargo area....)

Obviously - anyone with a BTDT?  How do I unlock the rear lid in the first
place, so I can work on a repair?  I'm assuming I need to replace something
in/at one of the hinges...