Mazda CX-50 2023–2025 — technical service bulletin
Bulletin 04-002-25 · NHTSA communication 11021385 · issued Jul 4, 2025
Technical service bulletin
communication type
Service Brakes
component
2023–2025
model years
4
vehicle entries
Official summary
Some vehicles may exhibit a clunk noise from the rear brakes when starting to drive. This may be caused by the brake pads and the rear disc plates sticking together when the Electric Parking Brake (EPB) is engaged for an extended period while parked. Even after releasing the EPB, the adhesion remains. When the vehicle starts driving in this condition, the initial torque causes the brake pads to detach from the rotors, and the resulting impact is transmitted through the brake system to the vehicle body, resulting in a clunk noise. To eliminate this concern, the shape of the rear brake disc pads
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.