Brake grinding noise

[Nilz]

Im getting a sort of grinding noise when I brake, the front pads and disks are fine, the back disks look ok, but the pads seem to be low.

Is there a light that comes on the dash for the rear pads??

Seems like it is just this, so I will get it sorted, but just wanted to check if there is a sensor light or not.

Thanks
Nilz

 

[Westy]

There's only a sensor for the fronts, if you have pads with the wires. The rears wont show up.