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Service bulletins for the 2021 Mazda CX-9

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.

428 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
SA-004-22g2023-01-05. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
SA-075-222022-12-02. Service bulletin. ELECTRICAL SYSTEM. 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. Cell phone charger/accessory in 12V socket (engine no start or unable to turn off) 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)
SA-074-222022-12-02. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM. Some customers may complain the HVAC system not maintaining the correct temperature or the ambient (outside) temperature reading incorrectly. This is caused by a failure in the ambient temperature sensor. To correct this issue, the ambient temperature sensor has been modified.
SA-064-22a2022-12-02. Service bulletin. ELECTRICAL SYSTEM. Some customers may comlpain about an intermittent Beep sound (popping sound) every 1 ~ 2 minutes while driving. This may be cause by a software error in the navigation SD card.
16-004-22a2022-12-02. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain that Mazda Connect does not start (blank screen) or that it takes a long time to restart/ reboot after starting the vehicle. This is caused by the initialization process with the CMU failing at startup due to a defective circuit board element. To eliminate this concern, the internal hardware (DRAM) of the CMU has been improved.
09-018-22b2022-12-02. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 74.00.324 or later). The system performance has been improved as follows: Ver. 74.00.324 fixes these software errors (bugs): * If the shift lever is operated quickly while displaying the CarPlayTM screen, the rear view screen may not return to the CarPlayTM screen. * When the gear position is shifted into P from R, the screen may not return to the previous condition before shifting into the R position.
SA-067-222022-11-04. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain about the following message displayed in the Multi-Information Display: In the following cases, the MRCC with Stop & Go function system is canceled when the vehicle is traveling at 19 mph (30 km/h) or less: * The Forward Sensing Camera (FSC) cannot detect target objects due to one of the following: - The windshield is dirty - The FSC lens is foggy - There is low visibility due to rain, fog or snow - It is at night and there is not enough light - There is direct or reflected sunlight on the FSC - There is problem with the FSC * There is a problem with the AUTOHOLD control function. * There is a problem with the electric parking brake (EPB).
SA-066-222022-11-04. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may have one of the following DTCs stored in memory along with a system status notice on the Multi-information display OR display a system status notice with no DTC: * C1001:92 - Forward sensing camera (FSC) poor field of view [Gen 6 vehicles] * B14F0:92 - General temporary failure in forward sensing camera (FSC) [Gen 7 vehicles built on or before March 2, 2019] * No DTC - Warning Message only [Gen 7 vehicles built after March 2, 2019] DTC C1001:92 or B14F0:92 set as a past record for low visibility of the Forward Sensing Camera (FSC). It does not mean there is an actual FSC defect. * In some cases the customer may have a concern with the Lane Departure Warning System (LDWS) and/or High Beam Control system (HBC). * In other cases this DTC might be found without a related customer concern. NOTE: In most cases, no dealer visit is necessary.
SA-064-222022-11-04. Service bulletin. ELECTRICAL SYSTEM. Some customers may comlpain about an intermittent Beep sound (popping sound) every 1 ~ 2 minutes while driving. This may be cause by a software error in the navigation SD card.
SA-017-22c2022-11-04. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain about any of the following: * Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle enrollment. * Remote function(s) inoperative. - Engine Start / Stop - Door Lock / Unlock - Lights ON / OFF * MAZDA CONNECT connected vehicle reception strength icon shows "X" or " "
SA-004-22f2022-11-04. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
09-032-22a2022-10-06. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the seat ventilation system still on after the engine has been turned off, in some cases this causes the battery to be completely discharged and not rechargeable. This is caused by a deterioration in the seat ventilation control unit. To eliminate this concern, the material for the circuit of the seat ventilation control unit has been modified.
09-030-22a2022-10-06. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the MyMazda App not communicating to the vehicle properly which may result in the condition monitor information is not refreshed or remote door lock/unlock not functioning. This is caused by a failure in communication between the telematics communication unit and the MyMazda App. To correct this issue, the control software of the telematics communication unit has been modified.
09-020-22a2022-10-06. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may exhibit a warning message displayed in the center display a few seconds after the brake system warning light in the instrument cluster has flashed for a moment at the time of departure or stop of the vehicle. This is caused by improper control logic of the gateway unit (GWU). To eliminate this concern, the logic of the GWU has been changed so that a failure determination is not made unless a signal of the brake fluid level sensor lowering has been continued for more than 5 seconds. NOTE: - This modification is only to prevent the warning message displayed in the center display due to changes in the fluid level. Therefore, the brake warning light may be still momentarily illuminated in the instrument cluster when the fluid level fluctuates by vehicle movement. - If the brake system warning light still stays on, the brake fluid amount may be low. In that case, diagnose the vehicle according to the instructions on MGSS.
SA-004-22e2022-10-06. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
SA-004-22d2022-09-06. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
SA-017-22b2022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain about any of the following: - Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle enrollment. - Remote function(s) inoperative. - Engine Start / Stop - Door Lock / Unlock - Lights ON / OFF - MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Confirm the customer's phone and vehicle have good to strong reception during the concern as shown in the table below. - If the reception is weak, move the vehicle to a location where the reception is good to strong as shown in the table, then try to get the Authorization Code and/or operate the remote functions before proceeding to the Repair Procedure if there is still an issue. - If the reception is good to strong, proceed to the Repair Procedure.
16-004-222022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain that Mazda Connect does not start or that it takes a long time to restart after starting the vehicle. This is caused by the initialization process with the CMU failing at startup due to a defective circuit board element. To eliminate this concern, the internal hardware of the CMU has been improved.
09-032-222022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the seat ventilation system still on after the engine has been turned off, in some cases this causes the battery to be completely discharged and not rechargeable. This is caused by a deterioration in the seat ventilation control unit. To eliminate this concern, the material for the circuit of the seat ventilation control unit has been modified.
09-030-222022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the MyMazda App not communicating to the vehicle properly which may result in the condition monitor information is not refreshed or remote door lock/unlock not functioning. This is caused by a failure in communication between the telematics communication unit and the MyMazda App. To correct this issue, the control software of the telematics communication unit has been modified.
09-024-222022-08-04. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER. In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer.
16-002-222022-08-04. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA03_11040 or later).
09-020-222022-07-06. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may exhibit a warning message displayed in the center display a few seconds after the brake system warning light in the instrument cluster has flashed for a moment at the time of departure or stop of the vehicle. This is caused by improper control logic of the gateway unit (GWU). To eliminate this concern, the logic of the GWU has been changed so that a failure determination is not made unless a signal of the brake fluid level sensor lowering has been continued for more than 5 seconds.
01-006-222022-07-06. Service bulletin. ELECTRICAL SYSTEM. This service bulletin 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 battery periodically according to the repair procedure.
SA-039-222022-07-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT; UNKNOWN OR OTHER. Some customers may complain about scratches on the instrument cluster lens.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.