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Service bulletins for the 2019 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.

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

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By component

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Bulletins, newest first
MT-003-212021-06-29. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Some vehicles may experience exterior trim heat damage when parked near a glass building. This may be caused by the suns reflection. If a building creates enough of a curve with a series of flat windows, which act like mirrors, the reflections all converge at one point, focusing and concentrating the light onto the street below.
04-002-21-38092021-06-29. Service bulletin. SERVICE BRAKES. Some vehicles equipped with electric parking brake (EPB) may exhibit a grinding noise from the rear brakes when braking. This may be caused by the rear brake pads not having the capability to remove the rust from the rear brake discs. The red rust accumulated on the discs is exposed to high temperatures during braking, and consequently the rust turns black. As the black rust is too hard to be removed by the brake pads, the rust progress is accelerated, resulting in the grinding noise.
SA-034-212021-06-03. Service bulletin. EQUIPMENT. When performing vehicle services such as control unit software update, control unit registration/activation, CMU log data retrieval, etc., always use the DCA8000 OR GR8 battery charger SST to maintain battery voltage.
SA-036-212021-06-03. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; LANE DEPARTURE; EXTERIOR LIGHTING; FORWARD COLLISION AVOIDANCE. 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 build on or before March 2, 2019], No DTC - 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.
SA-032-212021-06-03. Service bulletin. POWER TRAIN. There have been warranty claims submitted for growling or bearing whine noise in differentials, transfer units and transmissions where the source of the noise was a wheel bearing. This misdiagnosis can lead to multiple repair attempts, warranty debits, and additional inconvenience and/or cost to the customer. To reduce the chance of this occurring, please follow the steps outlined in the repair procedure.
SA-033-212021-06-02. Service bulletin. POWER TRAIN. The rear differential case could develop a crack in the case, as shown below. NOTE: This could affect new vehicles just delivered to the dealer as well as customer vehicles.
SA-030-212021-06-02. Service bulletin. EQUIPMENT. Auxiliary key blank cutting procedure: There are currently 2 methods for cutting a new auxiliary key blank. A. Auxiliary Key Trace Cut Method, B. Auxiliary Key Code Cut Method
MT-002-212021-06-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. When programming a key or installing a Genuine Mazda Accessory Remote Engine Start system, you may encounter programming difficulty. This may be caused by a customer installed aftermarket decorative trim and/or cover on the START/STOP ENGINE button. The aftermarket accessory may create electrical interference, which may interfere with programming.
MT-001-212021-06-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT. 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 Workshop Manual diagnosis. Aftermarket devices may be the cause of the electrical concern. Ask the customer if any aftermarket devices have been installed.
SA-029-212021-05-04. Service bulletin. EQUIPMENT. APPLE CARPLAY / ANDRID AURO FREQUENTLY ASKED QUESTIONS (FAQ) The following vehicles are not equipped with Apple CarPlay™ / Android Auto™, but it can be activated using MDARS. See Activation instructions on MGSS -> Infotainment -> MAZDA CONNECT Updates -> Apple Carplay / Android Auto MDARS Activation Instructions
SA-019-21a2021-04-26. Service bulletin. EQUIPMENT. MAZDA CONNECT Symptom Troubleshooting (6th Generation Vehicles). Use the symptom troubleshooting tables below to diagnose MAZDA CONNECT concerns.
SA-022-212021-04-06. Service bulletin. ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY. When performing the MGSS Workshop Manual 360° View Monitor System Aiming Procedure, M-MDS may show error message "Procedure unsuccessful". This may be caused by light glare on the SST.
09-010-21-37862021-04-05. Service bulletin. VISIBILITY. Some vehicles may exhibit power outer mirror(s) that do not completely fold in and/or out.
09-009-21-37592021-04-05. Service bulletin. STRUCTURE. Some customers may complain about rust at the bottom (inner side) of the doors where the seaming welt is located. It is caused by mud/sand adhering to the side sill, which scratches the paint surface when the door is opened/closed. The mud/sand is most likely brought in by the driver and/or passenger when stepping in and out of the vehicle.
MT-001-212021-04-05. 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 Workshop Manual diagnosis. Aftermarket devices may be the cause of the electrical concern. Ask the customer if any aftermarket devices have been installed.
CSP05d2021-03-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. MULTI-MODEL - MAZDA MOBILE START CUSTOMER SATISFACTION PROGRAM (CSP05). As shared previously, due to planned industry-wide changes in mobile network infrastructure and wireless technology, the Mazda Mobile Start (MMS) accessory was no longer offered beginning with 20MYvehicles. These technology changes are scheduled to occur in late 2021 as our service provider transitions away from a 3G network which currently supports the MMS application and its vehicle operations for all active legacy accounts. As a result, the MMS application and its vehicle operations will no longer work after September 30. 2021 for these legacy accounts and their respective vehicle owners. In an effort to provide advance notice and be transparent, and also to lessen the inconvenience of this situation - On 11/12/2020, all active MMS account holders will be informed of this news and will be presented with their choice of one of following goodwill offers: A new, replacement remote-engine start system (key fob transmitter type), Installation of Apple CarPlay / Android Auto, A $1000 voucher towards the purchase or lease of a new Mazda vehicle
CSP05c2021-03-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. MULTI-MODEL - MAZDA MOBILE START CUSTOMER SATISFACTION PROGRAM (CSP05). As shared previously, due to planned industry-wide changes in mobile network infrastructure and wireless technology, the Mazda Mobile Start (MMS) accessory was no longer offered beginning with 20MYvehicles. These technology changes are scheduled to occur in late 2021 as our service provider transitions away from a 3G network which currently supports the MMS application and its vehicle operations for all active legacy accounts. As a result, the MMS application and its vehicle operations will no longer work after September 30. 2021 for these legacy accounts and their respective vehicle owners. In an effort to provide advance notice and be transparent, and also to lessen the inconvenience of this situation - On 11/12/2020, all active MMS account holders will be informed of this news and will be presented with their choice of one of following goodwill offers: A new, replacement remote-engine start system (key fob transmitter type), Installation of Apple CarPlay / Android Auto, A $1000 voucher towards the purchase or lease of a new Mazda vehicle
01-006-21-37792021-03-03. 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.
01-005-21-37782021-03-03. Service bulletin. ELECTRICAL SYSTEM. The Mazda DCA-8000PM is required for all warranty battery testing. If the Mazda DCA-8000PM 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.
SA-007-212021-02-06. Service bulletin. SEATS. Some customers may complain that their seat warmers or seat ventilation do not turn on when the engine is restarted after being left on when turning off the engine. The logic has changed from previous Mazdas where the seat warmers and seat ventilation automatically turned on when the engine was restarted.
CSP05b2021-02-05. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. MULTI-MODEL - MAZDA MOBILE START CUSTOMER SATISFACTION PROGRAM. As shared previously, due to planned industry-wide changes in mobile network infrastructure and wireless technology, the Mazda Mobile Start (MMS) accessory was no longer offered beginning with 20MYvehicles. These technology changes are scheduled to occur in late 2021 as our service provider transitions away from a 3G network which currently supports the MMS application and its vehicle operations for all active legacy accounts. As a result, the MMS application and its vehicle operations will no longer work after September 30. 2021 for these legacy accounts and their respective vehicle owners. In an effort to provide advance notice and be transparent, and also to lessen the inconvenience of this situation - On 11/12/2020, all active MMS account holders will be informed of this news and will be presented with their choice of one of following goodwill offers: A new, replacement remote-engine start system (key fob transmitter type), Installation of Apple CarPlay / Android Auto, A $1000 voucher towards the purchase or lease of a new Mazda vehicle
09-004-21-37722021-02-05. Service bulletin. STRUCTURE. Some vehicles may experience stains appearing on the hood, roof and/or trunk of the vehicle. This concern is most likely to be found in a cold weather areas just after the RAPGARD is removed at PDI. This may be caused by moisture which has been trapped and condensed between the paint and the RAPGARD. These types of stains can be removed with a heat gun or an infrared drier.
09-003-21-37712021-02-05. Service bulletin. STRUCTURE:BODY. When encountering a vehicle with paint damage, refer to the "Mazda Paint Warranty Guide" to determine cause, prevention, remedy, and warranty coverage (if applicable).
09-002-21-37702021-02-05. Service bulletin. ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL; EQUIPMENT. In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer
07-001-21-37752021-02-05. Service bulletin. EQUIPMENT. A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is caused by condensation, dust, and pollen within the cooling unit. This condition is usually worse during high humidity conditions. “Mazda Air Cooling Coil Coating” is available to encapsulate the mold to reduce odors. If the product is properly applied, it can effectively reduce the musty/mildew odor for up to three years.

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