why do i have abs,tc & hill descent lights on-Discovery TD5?

hi i have a discovery td5 1998,i have the traction control and hill desent light on at all times,when i brack hard the front wheels look up but the abs light goes out when started.so i think ther is no problem with the aba.i also have the srs air bag light on,wen started it goes out for a second then on again,but some times it will go out all day until i turn the engin off,then plays up again.hope you can help me.thanks richy.

richy
December 2008

You will require a test book to rectify this problem as it will identify the problem causing the lights to come on. It is a flaw with the build of this model as if there is a problem with any of the 3 items mentioned all lights will illuminate. The problems encountered are as follows:
Possible hub failure
Wheel speed sensor fault
ABS modulator defective (The most expensive)
Shuttle valve on modulator sticking or defective
Brake pedal switch faulty although only if brake lights not working
Contamination on one or more of the parts mentioned
Leak in ABS system

Dazzer
August 2008