I have three light relating to the braking system and a dash message or two. The DSC lamp is illuminated, the parking brake system light is yellow when driving and the ABS light is on. If I had 3 lights on mt Discovery 2 it generally meant one or more of the ABS sensors were faulty. What is the likely cause here? Current cars
Range Rover Sport HSE TDV8
Range Rover TDV8 Vogue
Range Rover P38 Vogue
Range Rover CSK
Discovery 3 HSE

Its unlikely to be a fault with the park brake itself so my guess is either an ABS sensor or the steering angle sensor is the cause. If either an ABS sensor or the steering angle sensor is considered unreliable then the emergency function of the park brake won't be available and therefore the park brake will show a warning rather than faulty.
The stored fault code(s) will identify the culprit.

Im afraid your a little stuck without diagnostics sir...

Craig
I fear you are right and something I need to invest in. However sometimes there is a solution to be found from collective experience. Current cars
Range Rover Sport HSE TDV8
Range Rover TDV8 Vogue
Range Rover P38 Vogue
Range Rover CSK
Discovery 3 HSE

Absolutely sir... Just not on this occasion... 👍

Agree Current cars
Range Rover Sport HSE TDV8
Range Rover TDV8 Vogue
Range Rover P38 Vogue
Range Rover CSK
Discovery 3 HSE