Abs light and serv light come on when reversing???

[Don]

Missus's 1.2 is fine for general driving...but when she puts it in reverse, the abs and serv lights come on. The pads on fronts have been changed/replaced...any ideas?

 

[Dr HMS Derv Destroyer]

might be stupid but have you checked the earth on the battery, mine did it for some reason until i disconected that lead and reconnected.