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
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock protection
- Ideal for hydraulic and disc brakes
- Ideal for hydraulic and disc brakes
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock protection
- Provides an extra margin of safety in extreme braking conditions (packaging may vary)
- Mix of polyglycol ethers ensures hot brake-system operation will not create dangerous vapor
- Excellent for ABS, disc and drum brake systems
- Delivers braking power when needed by avoiding a spongy pedal
- Both wet and dry boiling points exceed the minimum government standards
- Exceeds DOT 3 regulations: Formulated to meet or surpass DOT 3 requirements, ensuring consistent braking performance and dependable stopping power in all conditions
- Premium high boiling point: Helps prevent vapor lock and brake fade under extreme heat, maintaining safe and reliable braking even in demanding situations
- Full synthetic formula: Provides superior resistance to moisture absorption and corrosion, helping protect vital brake system components for long-lasting performance
- Superior protection and performance: Designed to deliver reliable braking under extreme temperatures while supporting the safety and efficiency of the braking system
- Recommended applications: Suitable for ABS, disc, and drum brake systems; surpasses SAE J1703, FMVSS 116, and ISO 4925 DOT 3 specifications
- Premium DOT 3 Brake Fluid has a minimum boiling point of 450°F
- Meets and exceeds DOT 3 and all other Federal and SAE specifications and standards for motor vehicle brake fluids
- Mixes with all DOT 3 approved brake fluids
- Designed for use in disc, drum and ABS brake systems
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