# Service bulletin 04\-002\-25

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11021385
- Published by NHTSA: 2025\-08\-05
- Manufacturer's number: 04\-002\-25
- Manufacturer's date: 2025\-07\-04
- NHTSA component: SERVICE BRAKES

## NHTSA's 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 has been modified to increase the rigidity and reduce the impact force.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021385-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021385-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes

## Vehicles listed

- 2023 to 2025 MAZDA CX\-50
- 2025 MAZDA CX\-50 HYBRID

## Recalls for the same vehicles and component

- [2023232](/recalls/tc/2023232.md), 2023-04-18: Brakes
- [23V275000](/recalls/nhtsa/23V275000.md), 2023-04-18: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE

## Other bulletins for the same vehicles and component

- [SA\-029\-26](/bulletins/11032103.md), 2026-05-05, Service bulletin: UNKNOWN OR OTHER; ENGINE; POWER TRAIN; SERVICE BRAKES. This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA\-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle\-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers. SCHEDULED MAINTENANCE Refer to the applicable Workshop Manual or Owner's Manual for vehicle \-specific manufacturer scheduled maintenance. Workshop Manual \- Refer to section 00\-00 SCHEDULED MAINTENANCE. Owner's Manual \- Refer to section 8 Maintenance and Care. b. Note: Please refer to the information below outlining the services not included in Mazda's Factory Scheduled Maintenance: IMPORTANT: Recommending fluid flushes when not necessary can lead to customer confusion and dissatisfaction. Fluid flushing for preventive maintenance purposes is strongly discouraged, unless otherwise specified in a published procedure \(Owner’s Manual, Workshop Manual, Technical Service Bulletin, etc.\).
- [04\-001\-26](/bulletins/11029226.md), 2026-03-03, Service bulletin: SERVICE BRAKES. This bulletin supersedes the previously issued bulletin\(s\) listed below. The changes are noted in Red. 04\-001/25 02/06/25 Some vehicles may experience the front inner brake pads wear out faster than the outside. This accelerated pad wear may be caused by dirt and sand easily adhering to the inner friction surface of the disc while driving. To eliminate this concern, the shape of the dust cover and the front brake pad chamfer shape have been changed.
- [SA\-055\-25](/bulletins/11026353.md), 2025-12-05, Service bulletin: SERVICE BRAKES. Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern. NOTE: Before following this Service Alert repair procedure, ensure published TSBs in MGSS have been completed per model year.
- [04\-001\-25](/bulletins/11014796.md), 2025-03-04, Service bulletin: SERVICE BRAKES. Some vehicles may experience the front inner brake pads wear out faster than the outside. For example, the brake pads need to be replaced at less than 12,500 miles \(20,000km\). This accelerated pad wear may be caused by dirt and sand easily adhering to the inner friction surface of the disc while driving. To eliminate this concern, the shape of the dust cover has been changed and modification of the front brake pads is under study.
- [SA\-016\-24c](/bulletins/11009644.md), 2024-11-04, Service bulletin: SERVICE BRAKES. Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.
- [SA\-007\-24b](/bulletins/11008430.md), 2024-10-04, Service bulletin: SERVICE BRAKES. This information will give you the necessary knowledge to respond to customers concerns of Smart Brake Support \(SBS\) unintended braking. By educating the customer on the system operation, it should reduce their anxiety or distrust of the vehicle.
- [SA\-072\-24](/bulletins/11008428.md), 2024-10-04, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM; ENGINE. The CX\-50 has new and revised features that are different from previous models, and may be difficult to understand. This Service Alert provides valuable information to support potential dealer and customer concerns.
- [SA\-016\-24b](/bulletins/11007009.md), 2024-09-04, Service bulletin: SERVICE BRAKES. Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.
- [SA\-016\-24a](/bulletins/11003396.md), 2024-07-05, Other: SERVICE BRAKES. Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.
- [SA\-007\-24a](/bulletins/10254185.md), 2024-05-04, Service bulletin: SERVICE BRAKES, HYDRAULIC; FORWARD COLLISION AVOIDANCE; EQUIPMENT ADAPTIVE/MOBILITY. This information will give you the necessary knowledge to respond to customers concerns of Smart Brake Support \(SBS\) unintended braking. By educating the customer on the system operation, it should reduce their anxiety or distrust of the vehicle.

JSON: [/v1/bulletins/11021385](/v1/bulletins/11021385)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2004-002-25&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11021385&vehicle=Service%20bulletin%2004-002-25)