Land Rover Repair: Land Rover Discovery II SLS, land rover discovery, land rover discovery ii


Question
I have a August 2002  Disco II (the 2003 model). It's the top of the range TD5 auto version. It's a great vehicle and I have had no problems at all with it apart from the SLS orange warning light occasionally coming on for no reason. I stop the car, switch off the engine, wait a moment, switch it on again, and the light is off.
When I try to increase the suspension height by pressing the SLS switch itself, there is a beep and the SLS activation light blinks but the suspension does not lift. On the other hand the suspension has never (yet!) dropped.
My garage guys are puzzled by it. They have carried out the diagnostic checks and think the pump itself is faulty. However they say it must be an intermittent fault because normally, when the pumps fail, the car will gradually or suddenly sink onto the stops.
Before committing myself to around 500$ worth of a new pump I wondered if you could  give me an opinion!

Many thanks

Answer
It could be a sensor, that's the typical intermittent fault with the Range Rover suspension.

If there are no leaks the system will stay up for a long time, even without a working pump, but once it starts going down you're sunk.  

Since it doesn't raise that does point towards a bad pump, which is not uncommon on the DII's.