lately ive been having problems shifting my disco out of park. It doesn't happen every time but it is starting to become more frequent. I'll start the car, press the brake and go to move the shifter but it wont budge. My only solution has been to just wait and try a few more times until it finally moves.

is this an XYZ switch issue or something else?

 

sounds like your Interlock Solenoid is going out.

page 602 of the D2 Workshop Manual pdf, section 44-5.

while i would not recommend it, i disabled mine on my P38 when it went out. i think the D2's is similar in setup.


Edit: easy way to test the Interlock Solenoid is to get in your Rover, put the key in the ignition and turn it to On or Start, put your hand on the gear shifter and depress fully and then release the brake pedal. if the Interlock Solenoid is working you will feel a slight bump on the gear shifter and very likely hear the Solenoid engaging and disengaging.

 

The shifter interlock solenoid is managed by the BCU based on the input from the brake light switch. It's inexpensive and not difficult to replace. Check to see whether or not the brake lights illuminate when the brake pedal is pressed.

 

I took my shifter cover off when I was messing with a stiff shifter. The pin can be pushed by hand to get out of park if you are in a pinch.