brake pad wear sensors

[BIG_G_1979]

Hi guys can someone tell me how many wear sensors are there in my w211 braking system is it one per axle or what combination? Thanks

Sent from my xperia z3 using MBClub UK

 

[W210/1]

I changed fronts Yesterday on mine and had only one wear sensor which was fitted to right hand front. Ironically the pad it was fitted to had less wear than the inside pad - If it were fitted to the inside pad Id have got a notification sooner.