Hey everyone I need some help. I have a 2010 C30 and I'm trying to change the brakes myself. I've gotten to the point where I need to depress the piston to mount the brake pads but can't get the piston to retract. I used a C clam and tried prying it. Is there an electric mechanism that needs to be tripped to tripped in order to depress the piston?

Thanks,
Chris

 

I'm assuming that you are trying to replace the rear pads. The piston needs to be turned and pushed in at the same time. There are special tools out there for it.