I replaced the bad stereo in my 2002 Land Rover Discovery with a used one that powers up, but I don't have the code to unlock the stereo. How do I obtain this stereo code?

SOURCE: radio unlock code for 1998 land rover discovery

Give the dealership your VIN# and they will in turn provide you with an 'unlock' code. Input the code and you should have radio. If not, you will need to remove the radio and give the dealer the chassis # found on the case.

SOURCE: land rover discovery central locking.

No, likely to be caused by the actuators in the lock mechanism failing usually causing the door to remain locked. The boor door can also fail this way, as do the front side doors. Replacement requires the whole lock unit to be replaced at a cost of roughly £60 a lock, and a hours work. Helps if you have small hands. Requires a full strip down of the door and you will need the lock unit, trim clips (a few quid) and a trim removal tool (tenner). You can bodge with a flat head screwdriver, but the tool does help prevent damage to the clips & trim panel.

SOURCE: transfer case oil change- 1999 Land Rover Discovery II

No need for a diagram, to drain the oil, there's a drain plug on the bottom of the transfer box, under the handbrake drum. To fill, the fill plug is about in line with the centre of the handbrake drum and to the left. I think both plugs are 1/2" square. Fill to overflow with Texaco Multi-Gear 75W/90R. Takes about 2L or so.

SOURCE: 2001 land rover discovery II locate fuel filter and fuel pump

If you're standing looking at the rear of the vehicle, it's on the chassis rail on the right hand side rear wheel arch.

SOURCE: 2001 land rover discovery II locate fuel filter and fuel pump

for Land Rover Discovery 1999-2004 no more external Fuel Filter serviceable anymore...it's a built-in part with the fuel pump. so if you want to change the filter then change the whole fuel PUMP.