NHTSA ID Number: 10171844
Manufacturer Communication Number: 04-003-20-3668
TSB/Document Date: 2020-02-29
Summary
Some vehicles may exhibit grooves (1) in rear brake disc plate(s), as shown below. This concern is mostly found on new or low mileage vehicles, when the brakes are new. The grooves may be caused through abrasion from the accumulation of metal particles from the rear brake disc plates. The metal particles get caught between the brake pads and disc plates causing groove damage. To eliminate this concern, the disc plate surface honing process has been changed to reduce metal particle formation.
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TSB/Document ID: 04-003-20-3668
Replacement Service Bulletin Number:
MFR Communication Date: 2020-02-20
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES, HYDRAULIC
MFR Component System:
MFR Component Subsystem:
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Technical
Service Bulletin
Mazda
North American Operations
Irvine, CA 92618-2922
Subject:
GROOVES ON REAR BRAKE DISC PLATES
Bulletin No.: 04-003/20
Last Issued: 02/20/2020
APPLICABLE MODEL(S)/VINS
2016-2020 CX-5
2016-2020 CX-9
DESCRIPTION
Some vehicles may exhibit grooves (1) in rear brake disc plate(s), as shown below. This concern is mostly
found on new or low mileage vehicles, when the brakes are new.
The grooves may be caused through abrasion from the accumulation of metal particles from the rear brake
disc plates. The metal particles get caught between the brake pads and disc plates causing groove
damage. To eliminate this concern, the disc plate surface honing process has been changed to reduce
metal particle formation.
Page 1 of 4
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.
© 2020 Mazda North American Operations, U.S.A.
02/20/2020 4:18 PM tlawrenc
Bulletin No.: 04-003/20
Last Issued: 02/20/2020
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
1. Verify the customer concern.
Rear Brake Pad Inspection:
1. Visually inspect the brake pad surface.
- If metal particles (1) and tracks (2) are found (as shown below), brake pad replacement is required.
NOTE:
Even if the metal particles are no longer present on the brake pad, it still indicates a problem if you find the
corresponding tracks to the grooves on brake disc.
Rear Disc Plate Inspection:
1. Visually inspect the disc plate surface.
- If you find the corresponding grooves (1) to metal particles and/or tracks (2) on brake pad, replace the
disc plate with a modified one.
NOTE: Replace only the damaged disc plate(s).
Page 2 of 4
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.
© 2020 Mazda North American Operations, U.S.A.
02/20/2020 4:18 PM tlawrenc
Bulletin No.: 04-003/20
Last Issued: 02/20/2020
2. Verify the repair.
PARTS INFORMATION
Part Number
Part Name
Part Qty. Notes
K0Y1-26-251
PLATE, DISC
1
CX-5
KAY0-26-48Z PAD SUB SET, RR CALIPER
1
TKY8-26-251
PLATE, DISC
1
CX-9
TKY8-26-48ZA PAD SUB SET, RR CALIPER
1
WARRANTY INFORMATION
NOTE:
• This warranty information applies only to verified customer complaints on vehicles eligible for warranty
repair.
• This repair will be covered under Mazda’s New Vehicle Limited Warranty term.
• Additional diagnostic time cannot be claimed for this repair.
Replacement of Rear Brake Pad and Disc plate(s)
One side
Warranty Type
Symptom Code
Both sides
A
82
Page 3 of 4
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.
© 2020 Mazda North American Operations, U.S.A.
02/20/2020 4:18 PM tlawrenc
Bulletin No.: 04-003/20
Last Issued: 02/20/2020
Damage Code
Part Number Main Cause
Part Quantity
9D
****-26-251
1
2016 CX-5
2
XXR9TARX / 0.5 Hr. XXR9TBRX / 0.7 Hr.
Labor Operation Number / Labor Hours
2017-2020 CX-5
XXR9TARX / 0.4 Hr. XXR9TBRX / 0.6 Hr.
2016-2020 CX-9
Page 4 of 4
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.
© 2020 Mazda North American Operations, U.S.A.
02/20/2020 4:18 PM tlawrenc
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