To unlock the gas tank door, just unlock the four doors of the car, using the ignition key on one of the front doors, do a double movement to open the four locks and at the same time the gas tank door is free. Just pull it and it should be free. If you are inside the car, push the drivers lock (locking all four doors), and then pull it, (a bit tight), this unlocks the four doors and the gas door also.
On my 1995 it is a button located within the center console armrest. The trunk release button is next to it.
You will find the windshield wiper relay on a 1995 VW Jetta GLS under the hood. It is located in the fuse (relay) housing.
Under the rear bench seat behind the driver.
push on the lower right corner of the door
yes it is
Long time since I had Jetta but may be behind glove box, or somewhere else In the same place it's always been
The oil pressure sensor on a 1995 VW Jetta GL 2.0L is located on the bottom of the engine, near the oil pan. It provides oil pressure information to the vehicle's computer.
The rotor button is inside the distributor cap.
Fuel door release button/switch.
yes
R-134A
pull it out