Land Rover Repair: 03 disco 3 amigos, 3 amigos, speed sensor

Question
Hello, i narrowed the problem to a bad speed sensor i would like to know when i replace it do the abs, tc,hd warning lights go out or do they have to be reset with the special l.r. scan tool thanks for your help.

Answer
If you replaced the faulty speed sensor, and there were no other problems, the light would go out.  The fault would remain stored in memory until cleared with a LR test system, but the warning light would extinguish as soon as the fault was corrected.