94 VW Golf Rear cargo door won't open

SOURCE: VW Golf mk 5 rear door handle faulty

there will be a screw behind the rubber this holds the handle in., if the door has not been used much, greaseing the mechanism may solve this

SOURCE: Rear Window Switch Problem with Mk3 VW Golf 1.9TD

i had the same problem. After checking the window motor was not the problem i then checked the wiring harnes in the door. I beeped out all the connectors to make sure there were no broken wires and cleaned up all the contacts. The main connector looked quite corroded. I sprayed all the connectors with rust check and reassembled. The window is working fine now

SOURCE: rear door panel

You'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. If needed, you can pull back the weather seal (can't reuse it, but it's not that important) and you will be able to access everything inside the door

SOURCE: car door will not open. vw 1.8 1999 passat

remove door panel and check actuator for power and that actuator rod is connected and the plastic clip did not break or pop off

SOURCE: how to change drivers door latch on vw golf sdi

Have you tried using WD-40 to help the lock from sticking you may not need replace it.
However if you feel it's necessary ...you need to remove the inside door panel with the window up remove the two bars that are you inner lock and door handle levers a plastic clip holds them into place on the lock itself .a drop light is very helpful once the levers are disconnected remove the outer screws on the door itself the lock should fall off from the inside at this point ...install new lock and reinstall rods { levers} to the lock itself test before reinstalling door panel then secure when confident it works properly