Three months ago the ABS, TC and down hill ! warning lights came on in the dash and I took it in to Land Rover Newport Beach, CA to get it looked at. $600 later they told me they had replaced a brake sensor on the front passenger side. Recently my parking brake light would go on and off as I drove. I called the dealer and they told me to add brake fluid. I added the brake fluid and it fixed my parking brake light problem - however, as soon as I added the fluid and turned on my Discovery, the ABS, TC and down hill ! warning lights came and stayed on. Any ideas? The only thing I did was add brake fluid!

 

This is a separate issue, when this trio of lights comes on the ECU has picked up a glitch. Are your brakes squeaking alot, especially when hot, are they dusty, are they aftermarket pad and or rotors?
How many miles on the truck and on the brakes?
Mike