Window regulators and door lock actuators seem to pick the worst time to fail (snow storms, torrential rain, etc.) but they are straightforward to replace once you remove the Door panel. Get yourself a Panel fastener clip removal tool ( has a forked flat spatula looking-- end to it) at almost any Auto Parts store--- before you start. This avoids tearing the clips out of the door panel when gaining access to the failed part. On the P-38 Range Rover be careful not to bend the sheet metal lower mount for the window regulator, or the window will not glide properly in the window channel guides,and you'll be pulling the door panel off again.

Check the footwell carpeting on the passenger side for wetness, a sure indicator that the Heater Core O-rings are leaking (which is one of those jobs you may want to entrust to the Rover shop--what a Bear!). Left unattended, the engine coolant level will drop, and the possibility of overheating again surfaces.  

If your A/C and Heater controls are not diverting air as desired, chances are the Blend Door Actuators, or Servo's are not responding. eurotek apg has these parts available. The Range Rover model years between 1996 and 2002 also seem to have the Central Control Unit in the upper Console Facia area---fail in operation. The whole unit must be replaced.

Read the section on Body-Electric pertaining to the Range Rover Fuse Block. The Cruise Control can fail in operation over a simple cause. Check the vacuum line going to the dashpot near the throttle body. These tend to split from the heat, and sometimes the system can be restored by simply cutting off a couple inches of the hose and re-attaching it. Behind the Left front headlight-- accessible from the engine compartment-- is the Cruise Control Vacuum servo unit. Check the plug connector for a tight fit. Suspect the unit as pictured to the left-- if the system still will not engage (over 30 mph- as designed).