What causes land rover free lander TC and ABS orange lights to come on?

I've checked through all the breaks and fuses and can't seem to find any problems, what else could cause these lights to come on?

any answers greatly appreciated!What causes land rover free lander TC and ABS orange lights to come on?
Sometimes wheel speed sensors can cause problems - dirt, bad connections, maybe a bad wheelbearing messing up the clearances.

Hope its connections - by far the cheapest fix!