Unexpected Smart Brake Support (SBS-R) Operation While Backing Up (15-001/21)
Publication date: 2021-04-02Reference number: 15-001/21
UNEXPECTED SMART BRAKE SUPPORT (SBS-R) OPERATION WHILE BACKING UP
TECHNICAL SERVICE BULLETIN
| MAZDA: | 2020-2021 CX-30; 2019-2021 Mazda3 |
BULLETIN NOTES
APPLICABLE MODEL(S)/VINS
2020-2021 CX-30 vehicles with SBS-R with VINs lower than 3MVDM******231437 (produced before Nov. 14, 2020)
2019-2021 Mazda3 (Japan built) vehicles with SBS-R with VINs lower than JM1BP******300047 (produced before Jun. 17, 2020)
2019-2021 Mazda3 (Mexico built) vehicles with SBS-R with VINs lower than 3MZBP******208787 (produced before Nov. 14, 2020)
DESCRIPTION
Some customers may notice an unexpected collision warning or automatic braking while reversing. This concern may be due to the parking assist unit software. The Smart Brake Support (SBS-R) system may be detecting an unintended obstruction at the lower rear end of the vehicle. To eliminate this concern, the parking assist unit control software has been modified.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
- Verify the customer concern.
- Reprogram the PAU with Mazda Modular Diagnostic System (M-MDS) using Mazda Diagnostic And Repair Software (MDARS) according to MDARS ECU REPROGRAMMING PROCEDURE.
- Verify the repair.
CALIBRATION
| File Name | Note |
|---|---|
| B0J8-67UK2-F | With front ultrasonic sensors |
| B0J9-67UK2-F | Without front ultrasonic sensors |
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 assu me 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 with out 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.
WARRANTY INFORMATION
- 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.
| Warranty Type | A |
| Symptom Code | 64 |
| Damage Code | 9W |
| Part Number Main Cause | 5555-67-UU0 |
| Quantity | 0 |
| Operation Number/Labor Hours: | XXT35XFX/0.3 Hrs. |