Mazda Mazda3 Service Bulletins (2025)

141 manufacturer communications on file.

• July 8, 2026•Document ID: 11035595

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; STEERING

  Mfr Comm. #:

  06-001-26

  Date Added:

  August 4, 2026

  Manufacturer:

  MAZDA

  Summary

  DESCRIPTION Some customers may complain that the electric power steering warning light illuminates after engine start and DTC U2011:1C is stored. Zinc-plated whisker may form inside the EPS motor and trigger the DTC. However, since it is cleared when power is supplied during DTC detection, normal operation can be restored by turning the ignition OFF and then ON. Furthermore, there is no possibility of recurrence. This case may be resolved through a simple inspection or repair without the need for parts replacement, potentially avoiding unnecessary customer waiting time.

  Associated Products (12)

  2026 Mazda CX-302026 Mazda Mazda32025 Mazda CX-302025 Mazda Mazda32024 Mazda CX-302024 Mazda Mazda32023 Mazda CX-302023 Mazda Mazda32022 Mazda CX-302022 Mazda Mazda32021 Mazda CX-302021 Mazda Mazda3
  Associated Documents

  • DownloadMC-11035595-0001.pdf↗
• July 2, 2026•Document ID: 11035606

  Service Bulletin/Repair Instructions
  VISIBILITY/WIPER

  Mfr Comm. #:

  SA-043-26

  Date Added:

  August 4, 2026

  Manufacturer:

  MAZDA

  Summary

  This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-063/24 09/06/24 DESCRIPTION The Blind Spot Monitoring (BSM) system can malfunction with the following symptoms if the rear side radar sensors are installed facing the wrong direction.

  Associated Products (16)

  2026 Mazda CX-302026 Mazda CX-502026 Mazda Mazda32025 Mazda CX-302025 Mazda CX-502025 Mazda Mazda32024 Mazda CX-302024 Mazda CX-502024 Mazda Mazda32023 Mazda CX-302023 Mazda CX-502023 Mazda Mazda32022 Mazda CX-302022 Mazda Mazda32021 Mazda CX-302021 Mazda Mazda3
  Associated Documents

  • DownloadMC-11035606-0001.pdf↗
• July 1, 2026•Document ID: 11034448

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  SA-042-26

  Date Added:

  July 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA-017/25 12/16/25, 09/08/25, 07/14/25, 05/15/25 and 03/21/25 DESCRIPTION Mazda Connect Frequently Asked Questions (FAQ) Index General Questions MAZDA CONNECT Indication Setup and Getting Started Dealer Processes Registration / Enrollment / Take-Over Customer Subscription Status WI-FI General Informatio Opening the TCU Communication Line WI-FI How-To Conditions for Remote Engine Start Will Not Function WI-FI Trial Period Conditions for Remote Engine Start Function Will turn engine OFF Interacting With The App TCU Communication Line Status Service Issues Educational Videos Troubleshooting Resources MyMazda App Error Codes Customer Opt-Out

  Associated Products (35)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 15 more
  Associated Documents

  • DownloadMC-11034448-0001.pdf↗
• July 1, 2026•Document ID: 11034292

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  16-010-26

  Date Added:

  July 2, 2026

  Manufacturer:

  MAZDA

  Summary

  COMPLIANCE WITH NEW YORK STATE GENERAL BUSINESS LAW §399‑CCCCC (CONNECTED VEHICLE SERVICE; DOMESTIC VIOLENCE VICTIMS) DESCRIPTION This Service Information is issued in accordance with New York State General Business Law §399􀀀CCCCC (Connected Vehicle Service; Domestic Violence Victims). This regulation is intended to protect victims of domestic violence by allowing them to request the termination of third-party access (including access by an alleged abuser) to connected vehicle services, such as vehicle location tracking and remote control functions. To support this requirement, this Service Information enables confirmation of whether a vehicle is subject to connected vehicle services by referring to the SUBJECT VIN & PRODUCTION DATE RANGE, and provides guidance on the procedure to terminate such services when a customer requests the removal of third-party access for an applicable vehicle. Effective July 1, 2026, if a customer requests action under this regulation, a CMU/CDC software update must be performed to enable appropriate control of connected vehicle service access. If no request is made by the customer, the CMU/CDC software update is not required. REPAIR PROCEDURE 1. Confirm that the customer has requested deactivation of connected services in accordance with New York State General Business Law related action. 2. Perform the CMU/CDC software update according to the procedures outlined in the appropriate TSB shown in the table below:

  Associated Products (14)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-502025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-502024 Mazda MX-52023 Mazda CX-50
  Associated Documents

  • DownloadMC-11034292-0001.pdf↗
• June 30, 2026•Document ID: 11034290

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; UNKNOWN OR OTHER

  Mfr Comm. #:

  16-009-26

  Date Added:

  July 2, 2026

  Manufacturer:

  MAZDA

  Summary

  UPDATED SOFTWARE RELEASE FOR CONCERNS WITH MAZDA CONNECT INFOTAINMENT SYSTEM DESCRIPTION The release notes outlined below provide an overview of bug fixes, feature improvements, and updates included in the latest software release. The latest version of software contains all the updates of the previous versions. NOTE: If current version is not 7230C**-NA10_*****, this TSB is not applicable. Version 10034 for 7230C1A-NA10 or 7230C5B-NA10 enables termination of connected services at customer request Termination of Connected Services by customers at their initiative has been enabled. Accordingly, the following items have been updated. Add a "Data Communication Information" item under Settings > System Settings>Online Connectivity. ○ Updated the text displayed on the confirmation screen for disabling Connected Services. REPAIR PROCEDURE 1. Verify the customer concern. 2. Update MAZDA CONNECT with software version 10034 / 10026 or later with a USB memory stick using the 7TH GEN MAZDA CONNECT Update Instructions.

  Associated Products (4)

  2026 Mazda CX-302026 Mazda Mazda32025 Mazda CX-302025 Mazda Mazda3
  Associated Documents

  • DownloadMC-11034290-0001.pdf↗
• June 19, 2026•Document ID: 11034447

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-041-26

  Date Added:

  July 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Examples: 1. Devices connected to the DLC-2 (battery discharge/DTC stored) 2. Devices plugged into the 12V outlet 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored) 5. Non-certified USB cable (Apple Carplay™/ Android Auto™ will not connect) 6. Over-sized wheels/tires (incorrect GPS location) 7. DTC C0023:14 8. Decorative trim and/or cover on the START/STOP ENGINE button Example 1: Some electrical devices connected to the DLC-2 connector by insurance or mobile phone companies may cause: Battery discharge. The device may disrupt the CAN system battery saver mode. • IDS/MMDS will not communicate with the vehicle due to poor DLC-2 connection. The aftermarket device may cause DLC-2 female terminals to spread open.

  Associated Products (41)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 21 more
  Associated Documents

  • DownloadMC-11034447-0001.pdf↗
• June 17, 2026•Document ID: 11034439

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-027-26a

  Date Added:

  July 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This SA supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. SA-027/26 04/16/26 DESCRIPTION The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings (excluding i-STOP batteries e.g. Q-85, S-95) molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery. REPAIR PROCEDURE 1. Perform appropriate repair to vehicle. If needed, use the Battery Diagnostics of the DCA-8000 to test the charging and starting systems by following the on-screen instructions for entering the appropriate information. Refer to the Mazda DCA-8000 Instruction Manual for more information.

  Associated Products (40)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 20 more
  Associated Documents

  • DownloadMC-11034439-0001.pdf↗
• June 16, 2026•Document ID: 11034845

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-0-38/26

  Date Added:

  July 8, 2026

  Manufacturer:

  MAZDA

  Summary

  DESCRIPTION Some customers may complain about any of the following: 1. Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Index MAZDA CONNECT 2 Center Display Status Icon MAZDA CONNECT 3 Center Display Status Icon Remote Engine Start Will Not Function Remote Engine Start Function Will turn engine OFF Customer Subscription Status TCU Communication Line Status

  Associated Products (35)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 15 more
  Associated Documents

  • DownloadMC-11034845-0001.pdf↗
• June 16, 2026•Document ID: 11034444

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-040-26

  Date Added:

  July 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-009/25 08/22/25 and 02/18/25 DESCRIPTION Some customers may experience a Connected Vehicle failure. The MyMazda App may display an Error Code. This document provides Error Code description and recovery information to assist with repairs. Index System Outline • MYMAZDA App Connected Vehicle (CV) Error Codes • Vehicle Confirmation Instructions • Troubleshooting Instructions • Resources

  Associated Products (35)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 15 more
  Associated Documents

  • DownloadMC-11034444-0001.pdf↗
• June 16, 2026•Document ID: 11034443

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; UNKNOWN OR OTHER

  Mfr Comm. #:

  SA-039-26

  Date Added:

  July 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This Service Alert supersedes the previously issued SA listed below. The changes are noted in Red text. SA-012/25 10/06/25, 08/21/25, 05/15/25 and 02/27/25 DESCRIPTION Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure. REPAIR PROCEDURE NOTE: Before proceeding: Document the vehicle's current MAZDA CONNECT CMU software version. • 2019-2022 Models - Go to TSB 16-003/23 and confirm the CMU Serial Number is not within the affected range. • Document customer device Brand/Model/Model Number/software version on the repair order. • Confirm that the Connectivity Master Unit (CMU) is updated to the latest software version. Go to MGSS -> Infotainment -> MAZDA CONNECT Updates ○ • If possible, complete the Microsoft Forms Questionnaire. Go to MGSS -> Infotainment -> MAZDA CONNECT Questionnaire.

  Associated Products (35)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 15 more
  Associated Documents

  • DownloadMC-11034443-0001.pdf↗
• June 4, 2026•Document ID: 11033446

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-033-26

  Date Added:

  June 4, 2026

  Manufacturer:

  MAZDA

  Summary

  This SA supersedes the previously issued SA(s) listed below. The changes are noted below in Red. SA-029/25 10/16/25 and 06/02/25 DESCRIPTION This service information provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the batteries periodically according to the repair procedure. REPAIR PROCEDURE HIGH VOLTAGE BATTERY MAINTENANCE Verify the State-of-charge (SOC) in the instrument cluster. MX-30 EV: If the SOC is lower than 26%, charge it to 50% (either by normal charging or quick charging). CX-90/CX-70 PHEV: If the SOC is lower than 1%, charge it to 10% (either by normal charging, quick charging or engine running).

  Associated Products (27)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 7 more
  Associated Documents

  • DownloadMC-11033446-0001.pdf↗
• May 19, 2026•Document ID: 11033447

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-034-26

  Date Added:

  June 4, 2026

  Manufacturer:

  MAZDA

  Summary

  This service alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-047/25 10/07/25 DESCRIPTION When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated. CAUTION: DO NOT swap TCU with another vehicle as the TCU is VIN locked after activation. A TCU swap with another vehicle will disable Connected Services on both vehicles. • If TCU activation is not performed, connected vehicle functions will not operate. This will have a negative impact on the customer because they will need to return to the dealer for repairs. • If the Telematics Control Unit (TCU) replacement is necessary, check "Vehicle Communication Line Status Reference" status detail first. The TCU can only be replaced under the following "Status Detail" conditions: Open Completed (OK) ○ Closed Completed (OK) ○ ○ If the TCU is replaced under the following "Status Detail" conditions, the customer may not be able to enroll into the replacement TCU. Processing (NG) ○ Request Failed (NG) ○ Open Failed (NG) ○ Flag Setting Failed TCU Activation 1. Install the new TCU.

  Associated Products (34)

  2026 Mazda CX-302026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-52023 Mazda CX-30+ 14 more
  Associated Documents

  • DownloadMC-11033447-0001.pdf↗
• May 2, 2026•Document ID: 11033445

  Service Bulletin/Repair Instructions
  FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  SA-032-26

  Date Added:

  June 4, 2026

  Manufacturer:

  MAZDA

  Summary

  This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-011/25 10/16/25 and 02/27/25 DESCRIPTION Some customers will report that their fuel door (AKA, fuel filler door, fuel lid, and fuel-filler lid) was stuck closed and would not open to refuel the vehicle. Follow the repair steps below unless the conditions outlined in TSB 09-007/25 - FUEL-FILLER LID PANEL IS DEFORMED for 2019-2025 Mazda3 and 2020-2025 CX-30 are present. REPAIR PROCEDURE 1. Check for pry marks around the door opening. Are there any pry marks? YES: This is due to outside influence and is not covered by Mazda warranty. NO: Continue to the next step. 2. Check the fuel door lock operation. a. Lock the doors and verify if the fuel door lock is locking. NOTE: The default setting is a 90-second delay after the doors lock, but the customer can set that to 0, 30, 60, 90, or 120 seconds. b. Unlock the doors and verify if the fuel door lock is unlocking. NOTE: There is no delay to this function, but the fuel door must be locked to confirm it is unlocking. See the lock note above. Is the fuel door lock operation working correctly? YES: The fuel door repair IS NOT covered by Mazda warranty. The fuel door lock is OK and the door was damaged because the vehicle was not unlocked. NO: The fuel door repair IS covered by Mazda warranty. The fuel door lock is NOT OK and damage to the door was done in order to access the lock. NOTE: If the door was already broken when it arrived at the dealership, Mazda will pay for the fuel door repair under warranty if the vehicle does NOT have an emergency release. Mazda will NOT pay for the fuel door under warranty if it has an emergency release.

  Associated Products (22)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32025 Mazda CX-302025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32024 Mazda CX-302024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32023 Mazda CX-302023 Mazda CX-502023 Mazda Mazda32022 Mazda CX-302022 Mazda Mazda3+ 2 more
  Associated Documents

  • DownloadMC-11033445-0001.pdf↗
• May 1, 2026•Document ID: 11032001

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  01-003-26a

  Date Added:

  May 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. 01-003/26 01/30/26 Some vehicles may exhibit a check engine light ON with DTC P20F8:00 stored. P20F8:00 - Swirl control circuit range/performance problem. In these cases, increasing temperature levels of the Swirl Control Valve (SCV) motor due to excessive actuation leads to duty limitation, causing poor opening􀀀angle response and resulting in a stuck judgment. To eliminate this concern, the PCM logic has been modified. REPAIR PROCEDURE Reprogram the PCM with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic and Repair Software (MDARS). Refer to MDARS ECU Reprogramming Procedure.

  Associated Products (10)

  2025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda Mazda32024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda Mazda32023 Mazda CX-302023 Mazda Mazda3
  Associated Documents

  • DownloadMC-11032001-0001.pdf↗
• April 30, 2026•Document ID: 11032104

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY; UNKNOWN OR OTHER

  Mfr Comm. #:

  SA-031-26

  Date Added:

  May 5, 2026

  Manufacturer:

  MAZDA

  Summary

  DESCRIPTION Some vehicles may require the replacement of a damaged VIN plate or vehicle certification label. To obtain a replacement VIN plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact DAG (Dealer Assistance Group) using VIN Plate Request Form available on One Mazda. To obtain a replacement vehicle certification label (located on the B􀀀pillar or front door), contact your assigned DSM (District Service Manager) to place the order. If DSM contact information is not available, refer to the Dealer & Field Contact Directory.

  Associated Products (40)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 20 more
  Associated Documents

  • DownloadMC-11032104-0001.pdf↗
• April 21, 2026•Document ID: 11032103

  Service Bulletin/Repair Instructions
  SERVICE BRAKES; UNKNOWN OR OTHER; ENGINE; POWER TRAIN

  Mfr Comm. #:

  SA-029-26

  Date Added:

  May 5, 2026

  Manufacturer:

  MAZDA

  Summary

  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.).

  Associated Products (40)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 20 more
  Associated Documents

  • DownloadMC-11032103-0001.pdf↗
• April 18, 2026•Document ID: 11032015

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; UNKNOWN OR OTHER

  Mfr Comm. #:

  SA-012-26b

  Date Added:

  May 4, 2026

  Manufacturer:

  MAZDA

  Summary

  Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. • Connected Vehicle Remote functions may fail. • The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) • U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT REPAIR PROCEDURE 1. Verify the concern. 2. Check if any of the following DTCs are stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) • U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT Are the following DTCs stored? YES: Proceed to next step. • NO: This service information does not apply. Continue troubleshooting using MGSS. • 3. Check for electrical devices in the vehicle such as a device connected to USB hub, Dash Cam, Insurance Device, FasTrak........ect. Are there any customer electrical devices in the vehicle? YES: Document customer device used, then go to the next step. • NO: Go to the next step. • 4. Clear the DTC's

  Associated Products (13)

  2026 Mazda CX-302026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32025 Mazda CX-302025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32024 Mazda CX-302024 Mazda CX-902024 Mazda Mazda3
  Associated Documents

  • DownloadMC-11032015-0001.pdf↗
• April 16, 2026•Document ID: 11032101

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  SA-026-26

  Date Added:

  May 5, 2026

  Manufacturer:

  MAZDA

  Summary

  This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/19 DESCRIPTION If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly, the replacement engine may fail prematurely. Metallic debris from the old engine (with catastrophic internal mechanical failure) may rest inside the intake manifold. When the new engine assembly is installed, debris in the intake manifold will be ingested into the new engine and cause internal damage. Clean the intake manifold internally to remove any debris from old engine before installing the new replacement engine assembly. If the intake manifold cannot be properly cleaned internally, replace it.

  Associated Products (39)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 19 more
  Associated Documents

  • DownloadMC-11032101-0001.pdf↗
• April 15, 2026•Document ID: 11032102

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-027-26

  Date Added:

  May 5, 2026

  Manufacturer:

  MAZDA

  Summary

  This SA supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. SA-007/25 10/22/25, 06/02/25 and 02/03/25 DESCRIPTION The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings (excluding i-STOP batteries e.g. Q-85, S-95) molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery. 2. CCA (Cold Cranking Amps): CCA ratings are normally located on a sticker affixed to the top of the battery to indicate a battery’s Cold Cranking Amps. CCA rated batteries are supplied with domestically produced vehicles. NOTE: If an incorrect CCA rating is entered into the Mazda DCA-8000, it will result in a false result and invalid Warranty Code from the tester. This will also result in unnecessary replacement of batteries. TEST PROCEDURE 1. Connect the charger clamps to the appropriate battery posts.

  Associated Products (40)

  2026 Mazda CX-302026 Mazda CX-52026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-5+ 20 more
  Associated Documents

  • DownloadMC-11032102-0001.pdf↗
• March 20, 2026•Document ID: 11030647

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY; UNKNOWN OR OTHER

  Mfr Comm. #:

  SA-019-26

  Date Added:

  April 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-045/22 12/06/22 and 07/12/22 NOTE: All vehicles with protective films applied to the piano black door garnishes of the following models are applicable to this Service Alert. DESCRIPTION The purpose of this Service Alert is to remind dealers to keep the protective films on the piano black door garnishes attached until just before delivering the vehicle to the customer. The protective films are attached on new vehicles when shipped from the factory in order to avoid being scratched during transportation and while in dealer stock. NOTE: Remove the protective films after cleaning the vehicle. • If any adhesive residue remains on the surface of the door garnish, attach the adhesive side of the protective film on the area again, and then peel it off to remove the residue. • Refer to the image below for the location of the protective films (4 sheets of films in each side).

  Associated Products (4)

  2026 Mazda CX-52026 Mazda Mazda32025 Mazda CX-52025 Mazda Mazda3
  Associated Documents

  • DownloadMC-11030647-0001.pdf↗