2014-2016 MAZDA3 – SQUEAKING/GRINDING NOISE FROM REAR BRAKE
APPLICABLE MODEL(S)/VINS
2014-2016 Mazda3 vehicles with VINs starting with JM1
Squeaking/grinding noise from the rear brake even after the brake pedal is released.
Upon inspection, the caliper mounting support is corroded and one of the disc pad is abnormally worn out (A).
This is caused by vehicle usage in an area using road salt. The surface of the mounting support may swell from corrosion causing premature disc pad wear and brake noise.
To correct the problem, an improved caliper mounting support has been newly established as a service part. The anti-corrosion surface treatment has been changed from Zn to Zn-Ni plating.
REPAIR PROCEDURE
- Verify that the caliper mounting support(s) is corroded and the disc pad(s) is abnormally worn out.
- Replace the caliper mounting supports (both sides) with the modified service parts sets and attachments with new parts according to the instructions on MS3 online or the Workshop Manual (section 04-11).
NOTE: Replace the disc plate(s) additionally if damaged by the completely worn out disc pad.
CAUTION: When installing the modified mounting support (A), tighten the installation bolts (B) with the upper limit of the tightening torque specified in the Workshop Manual (6.6 Nm, 48 ft-lbf, 6.7 kgfm).
PART(S) INFORMATION
| Part Number | Description | Qty. | Notes |
| B4YG-26-28X | Mounting Support Set | 2 | Newly established service parts set that includes: 1 mounting support, 2 slide pins and 2 dust boots. |
| B4Y0-26-43ZB | Rear Brake Pad and Attachment Set | 1 | Newly established service parts set that includes: pad sub set (B4Y0-26-48ZB) and pad attachment (B4Y0-26-49ZA). |
| B4Y0-26-48ZB | Pad Sub Set | 1 | DO NOT use these separate parts. Use the new part set as B4Y0-26-43ZB. |
| B4Y0-26-49ZA | Pad Attachment | 1 | |
| B45G-26-251A | Disc plate | 1 or 2 | Replace if damaged. |
04-003/15
11/06/2015
04-003/15
09/16/2015
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Last update on 2026-07-06 / Affiliate links / Images from Amazon Product Advertising API
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