# Service bulletins for the 2023 Mazda CX\-30

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

318 bulletins from NHTSA, as of 2026-10-19.

- [SA\-042\-26a](/bulletins/11037900.md), 2026-10-03, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Mazda Connected Services \- Frequently Asked Questions \(FAQ\) This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA\-042/26 06/30/26 DESCRIPTION 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
- [SA\-041\-26a](/bulletins/11037899.md), 2026-10-03, Service bulletin: ELECTRICAL SYSTEM. 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
- [SA\-038\-26b](/bulletins/11037634.md), 2026-10-01, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA\-038/26 08/18/26 and 06/15/26 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
- [SA\-039\-26a](/bulletins/11037019.md), 2026-09-04, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This Service Alert supersedes the previously issued SA\(s\) listed below. The changes are noted in Red text. SA\-039/26 06/15/26 Mazda Connect Symptom Troubleshooting DESCRIPTION Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
- [SA\-038\-26a](/bulletins/11037018.md), 2026-09-04, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM; ENGINE; EXTERIOR LIGHTING. This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA\-038/26 06/15/26 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 functions 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
- [SA\-053\-26](/bulletins/11037011.md), 2026-09-04, Service bulletin: ELECTRICAL SYSTEM; WHEELS. This Service Alert supersedes the previously issued bulletin\(s\) listed below. The changes are noted in Red text. SA\-006/23 01/23/23 DESCRIPTION Some customers may complain about the infotainment system and/or the MyMazda App showing incorrect clock and/or tire pressures and/or tire pressure missing. This may be caused by: Incorrect calendar entry \(month/day/year\) after a battery disconnect Infotainment system software update. BCM TPMS unlearn during vehicle storage or transport. Wheel/Tire change REPAIR PROCEDURE This can be corrected by the customer driving the vehicle for a day or two so that the following will occur.
- [SA\-050\-26](/bulletins/11037008.md), 2026-09-04, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. DESCRIPTION Some vehicles may continue to display the recall notification "IMPORTANT NOTICE. VIEW VEHICLE STATUS MONITOR FOR DETAILS" on the center display even after the recall has been completed. NOTE: Once the warranty claim for the recall campaign is approved by Mazda Japan, the recall notification will be automatically removed via Connected Services on the following day or later. This condition may occur if the Connected Services subscription was canceled while the recall notification was still active. ACTION TO BE TAKEN If you encounter the situation above, use MDARS to manually remove the center display recall notification. Note: MDARS can only remove the recall notification when MCVV shows no CV contract.
- [SA\-048\-26](/bulletins/11037006.md), 2026-09-04, Service bulletin: ENGINE. Some vehicle may exhibit the CHECK ENGINE light on with DTC P0524 \(Engine oil pressure control system: Oil pressure decrease\) and no abnormal engine noise. This may be caused by a malfunction of the oil pressure control valve \(located at the rear of the engine block near the oil filter\) due to machining contamination inside the electromagnet sleeve and the solenoid plunger remaining during manufacturing. This contamination is affecting the OCV operation when oil pressure control is requested by the PCM. REPAIR PROCEDURE Perform the WSM inspection for P0524.
- [01\-010\-26](/bulletins/11036688.md), 2026-09-02, Service bulletin: ENGINE. This bulletin supersedes the previously issued bulletin\(s\) listed below. The changes are noted in Red text. 01\-012/22 10/06/22 DESCRIPTION Some vehicles may exhibit accumulation of dried coolant \(1\) around the water pipe \(2\). This is caused by a gap between the housing and pipe due to a press fitting during the manufacturing process. The accumulated coolant is solidified and plugs the gap in high temperature environment and the seepage is stopped and does not progress. This is normal and does not require a part replacement, clean off the dried coolant from around the pipe with a wire brush. REPAIR PROCEDURE 1. Verify the customer concern. 2. If the above condition is experienced, remove the accumulated coolant around the pipe \(1\) with a wire brush etc. NOTE: Perform the procedure on the vehicle. No need to remove the water pipe and hoses.
- [SA\-043\-26](/bulletins/11035606.md), 2026-08-04, Service bulletin: VISIBILITY/WIPER. 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.
- [09\-016\-26a](/bulletins/11035597.md), 2026-08-04, Service bulletin: SEATS. This bulletin supersedes the previously issued bulletin\(s\) listed below. The changes are noted in Red. 09\-016/26 05/06/26 DESCRIPTION Some customers may complain that the seat warmer does not operate when turning the ignition on while the seat is warm but when turning the ignition off then on again, the seat warmer begins to operate appropriately. DTCs “B1030:13” and/or “B1032:13” are stored. This is caused by the seat warmers fail\-safe mode which prevents it from working during the initial drive cycle. To correct this issue, the seat warmer has been modified to optimize the temperature control. B1030:13 Seat warmer unit \(LH\) circuit malfunction \(Heater side\) B1032:13 Seat warmer unit \(RH\) circuit malfunction \(Heater side\) Customers having this concern should have their vehicle repaired using the following repair procedure. REPAIR PROCEDURE 1. Verify the customer concern. 2. Remove the front seat cushion trim and the front seat back trim for both the driver and passenger seats according to the instructions in MGSS.
- [06\-001\-26](/bulletins/11035595.md), 2026-08-04, Service bulletin: STEERING; ELECTRICAL SYSTEM. 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.
- [SA\-0\-38/26](/bulletins/11034845.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM. 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
- [SA\-042\-26](/bulletins/11034448.md), 2026-07-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM; UNKNOWN OR OTHER. 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
- [SA\-041\-26](/bulletins/11034447.md), 2026-07-03, Service bulletin: ELECTRICAL SYSTEM; ENGINE. 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.
- [SA\-040\-26](/bulletins/11034444.md), 2026-07-03, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. 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
- [SA\-039\-26](/bulletins/11034443.md), 2026-07-03, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. 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.
- [SA\-027\-26a](/bulletins/11034439.md), 2026-07-03, Service bulletin: ELECTRICAL SYSTEM. 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.
- [SA\-034\-26](/bulletins/11033447.md), 2026-06-04, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. 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.
- [SA\-033\-26](/bulletins/11033446.md), 2026-06-04, Service bulletin: ELECTRICAL SYSTEM. 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% \(either by normal charging, quick charging or engine running\).
- [SA\-032\-26](/bulletins/11033445.md), 2026-06-04, Service bulletin: FUEL/PROPULSION SYSTEM. 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.
- [09\-016\-26](/bulletins/11033115.md), 2026-06-02, Service bulletin: SEATS; ELECTRICAL SYSTEM. DESCRIPTION Some customers may complain that the seat warmer does not operate when turning the ignition on while the seat is warm but when turning the ignition off then on again, the seat warmer begins to operate appropriately. DTCs “B1030:13” and/or “B1032:13” are stored. This is caused by the seat warmers fail\-safe mode which prevents it from working during the initial drive cycle. To correct this issue, the seat warmer has been modified to optimize the temperature control. B1030:13 Seat warmer unit \(LH\) circuit malfunction \(Heater side\) B1032:13 Seat warmer unit \(RH\) circuit malfunction \(Heater side\) REPAIR PROCEDURE 1. Verify the customer concern. 2. Remove the front seat cushion trim and the front seat back trim for both the driver and passenger seats according to the instructions in MGSS.
- [SA\-031\-26](/bulletins/11032104.md), 2026-05-05, Service bulletin: STRUCTURE:BODY; UNKNOWN OR OTHER. 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.
- [SA\-029\-26](/bulletins/11032103.md), 2026-05-05, Service bulletin: UNKNOWN OR OTHER; ENGINE; POWER TRAIN; SERVICE BRAKES. 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 \(Owner’s Manual, Workshop Manual, Technical Service Bulletin, etc.\).
- [SA\-027\-26](/bulletins/11032102.md), 2026-05-05, Service bulletin: ELECTRICAL SYSTEM. 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.

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