How do you get the piston in rear brake to retract on a mazda5 sport?

To retract the rear brake piston on a Mazda5 Sport, you'll typically need to use a special tool called a brake caliper tool or a C-clamp. First, remove the rear wheel and brake caliper from the rotor. Then, insert the tool into the caliper and turn it to rotate and push the piston back into the caliper housing, allowing for new brake pad installation. Always ensure the brake fluid reservoir is checked to avoid overflow during this process.