Pad sensors.

[Thunderbird17]

On my c220 cdi 2012,
Do any of the brake pads have sensors.?

 

[DSM10000]

Yes

 

[Thunderbird17]

Yes

Awesome 4 then?

 

[DSM10000]

Awesome 4 then?

You never get 4

One on the front, some models have one on the rear

Take your wheels off and check for fitment and pad thickness and condition but do not rely on them. Wires can break, they may be fitted incorrectly etc.