I own a 2000 land rover discovery ii and the rear brake lights are alway on when the key is in the ignitiion swithc or the car is running?

Unlikely to be a fuse blown. Doesn't your Discovery have Daytime Running Lights? If so the right side might be a blown fuse. If the rear lights are on, that mean you have the nighttime lights on.

My mother worked at Land Rover in Solihull for 12 years. :>)

Fuses and relay Land Rover Discovery 2 - Fuse box diagram

fusesdiagram.com https://fusesdiagram.com > land-rover > fuses-and-rela...

Passenger compartment fuse box is located below an to the side of the steering column. Remove cover using a coin or small screwdriver and turning 90 degrees.

They seem to suffer with funky electrics

https://www.google.com/search?q=land+rover+discovery+2+left+front+left+rear+lights+on+all+the+time

..

Hi welcome main problems are the abs valves causing the 3 dash lights (search 3 amigos online) a really badly sited compressor can cause air suspension models to fail giving the bags a slow leak the V8 is a solid engine but can have radiator expansion tank and cap failures
the other issue is electrics windows and door looms are problematic

sounds like a faulty brake light switch which was commom on disco2

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.

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.

Please check the a/c compressor clutch; it may be not working. FYI the compressor does not run all the time. It is the clutch that will cycle on and off to maintain a/c circuit pressure. To check, put the a/c on high and watch the compressor under the hood to see if it cycles.

The code P1451 on a Land Rover is "Leakage Detection Module Motor power stage error Drive cycle A:Signal out of range - above maximum". This is an OBD-II diagnostic system code. As far as I know, a 1995 Land Rover Discovery does not use a OBD-II system. Is it possible that this rover is a later model year

dealer only

http://carservicemanuals.blogspot.com/2008/06/range-rover-discovery-ii-defender.html

GL

LAND ROVER DISCOVERY II DONT HAVE FUEL FILTER, ONLY HAVE PRE FILTER IN THE FUEL PUMP