I have a warning light on the dashboard it is showing all four wheels can anybody tell me what this is. The warning light looks like the picture I have attached It is for a discovery 1
the diff should always be unlocked. no light.
if it dont come on when locked, you have an issue somewhere.
you'll trash summat (tyres or transmission) if you drive permenantly locked.
on mine, 300tdi, to the left (nearside) is diff locked
to the right (offside) is diff unlocked.
they should all be the same, but a mates 300tdi hi / low is opposite to mine
if in doubt jack a front wheel up and with diff unlocked you should be able to spin the wheel reletively freely, diff locked it will move a few degrees then lock up either direction
When you take it out of lock make sure you reverse your car 2 car lengths, this makes sure it's all sorted. At least thats what it says in my owners manual.