Technical Service Bulletin 04-001/22 — 2020 MAZDA CX-9

Some vehicles may exhibit a click or squeak noise from the front brakes under the following conditions: 2016-2022 CX-9 2018-2022 CX-5 (Click noise): 1. When first moving forward or reverse from a stop OR 2. When first applying the brakes while moving forward at slow speeds. Cause: Due to deteriorated grease between the brake pads and the shim, the front brake pads move upward/downward along with the brake rotors during brake application. When the vehicle moves or the brakes are applied the next time, the front brake pads move to the other side, which causes a click noise. Mass-Production Change: None 2016-2018 CX-9 (Squeak noise): During light braking. Cause: Occurs when the front brake pads have been worn to certain levels. As the pads wear, the chamfer goes away and the grease between the pad and the shim deteriorates. Mass-Production Change: As of Apr. 27, 2018, the chamfer shape of the brake pad was improved to increase durability.