My ABS and TC and Hill Descent went of on my land rover discovery?

The lights came out on a stop suddently the three came at the same time TC, ABS, and Hill Descent how can i fix that.My ABS and TC and Hill Descent went of on my land rover discovery?
most likely a fuse, or an internal computer malfunction. sometimes the internal computer needs new "software" abs and hill descent are both run off the internal pc. so if your land rover is still under warrienty i would take it into the dealer but if not. dont get screwed by letting them take apart your car!!!