Brake Disc Caliper problems of the 2017 Mazda MAZDA6

The part was purchased via rock auto and installed at home diy. The vehicle failed to return form "maintenance" mode for the rear parking brake. Took it to a Mazda dealer and they determined the calipers were both manufactured incorrectly or the "spline gear" in the rear of the caliper that meshes to the electronic parking brake actuator. This caused the parking brake to stay in maintenance mode, making it unusable for parking nor emergency braking, making the vehicle undrivable. It also caused damage that incurred costs for parts and labor of the vehicle. The vehicle can still be driven and the only way to know its potentially unsafe is the light in the dash for the brake maintenance mode. At this time its unclear if this is the only issue with this part. Jason at dynamic friction technical support is investigating.

All rotors, pads and calipers need to be changed after only 15,000 miles on this new vehicle. The brake system is unreliable on the highway and at risk of locking up due to rusting of all components. The car was purchased in mississippi then housed in florida for 90% of its life. It has not been exposed to flood or excessive standing water, nor up north at all. Https://video. 37483. Net/hougn3bg.