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Service bulletins for the 2021 Mazda Mazda6

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.

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

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Bulletins, newest first
SA-031-252025-07-02. Service bulletin. UNKNOWN OR OTHER. Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter may be found to be wet.
SA-030-252025-07-02. Service bulletin. ENGINE. A tapping/rattling noise may be noticed from the valve train area. This operating condition can occur on new vehicles which have been delivered to Mazda dealers (due to loading and unloading from transport trucks or customers moving their vehicles in and out of their garages to wash the vehicle, etc.). This condition may also occur if the engine is not allowed to warm up after multiple cold starts.
SA-029-252025-07-02. Service bulletin. ELECTRICAL SYSTEM. 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.
SA-007-25a2025-07-02. Service bulletin. ELECTRICAL SYSTEM. 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 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
CSP13c Dealer Ltr2025-07-02. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13b Dealer Ltr2025-06-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13a Parts and Warranty2025-06-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13a Dealer Ltr2025-06-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
09-024-252025-06-04. Service bulletin. UNKNOWN OR OTHER. Some vehicles may exhibit following symptoms: 1. The rearview mirror (1) rattles up and down (2) while adjusting the mirror. 2. The rearview mirror (1) makes a rattle noise depending on the road surface conditions while driving. This concern is caused during rearview mirror installation. The adhesive is squeezed out between the windshield and the mirror base. The rearview mirror is assembled on top of the overextended adhesive. The adhesive is softened by heat, and loosening screws, results in a rattling concern.
CSP13 Repair2025-05-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13 Parts and Warranty2025-05-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13 FAQs2025-05-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13 Dealer Letter2025-05-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
07-004-252025-05-03. Service bulletin. UNKNOWN OR OTHER. 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.
SA-020-252025-05-03. Service bulletin. UNKNOWN OR OTHER. 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.
SSPD8 Repair2025-04-02. Warranty extension. ENGINE. SSPD8 - SPECIAL SERVICE PROGRAM WARRANTY EXTENSION - MULTI-MODEL - CHECK ENGINE LIGHT ON WITH DTC P0126:00.Mazda Motor Corporation has decided to conduct a Special Service Program (SSP) to extend the warranty coverage for a specific repair of the fail-safe thermostat in the coolant control valve on certain CX-5, Mazda3, CX-3, Mazda6 and CX-30 vehicles that are equipped with the suspected coolant control valve. The warranty coverage for a specific repair of fail-safe thermostat has been extended to 15 years (180 months) /150,000 miles (240,000 km) whichever comes first, from the original warranty start date. Concern Outline:On certain subject vehicles, the check engine light is illuminated with DTC P0126:00 (Thermostat stuck open) stored in memory and one or more of the following symptoms may occur: Engine takes longer to warm up, Engine temperature gauge fluctuates, Low coolant temperature indicator (blue) light stays on longer or turns on while driving, Poor heater performance, especially at idle.This is a warranty extension for the specified repair only. Inspection and replacement of non-failed parts will not be eligible for reimbursement under this SSP to the dealer or customer. This program extends the warranty period for actual failures due to defects in workmanship or materials in accordance with the Mazda Warranty Policy and Procedures. If a customer arrives at your dealership with the concern described, please repair under this Special Service Program.
SSPD8 FC2025-04-02. Warranty extension. ENGINE. SSPD8 - SPECIAL SERVICE PROGRAM WARRANTY EXTENSION - MULTI-MODEL - CHECK ENGINE LIGHT ON WITH DTC P0126:00.Mazda Motor Corporation has decided to conduct a Special Service Program (SSP) to extend the warranty coverage for a specific repair of the fail-safe thermostat in the coolant control valve on certain CX-5, Mazda3, CX-3, Mazda6 and CX-30 vehicles that are equipped with the suspected coolant control valve. The warranty coverage for a specific repair of fail-safe thermostat has been extended to 15 years (180 months) /150,000 miles (240,000 km) whichever comes first, from the original warranty start date. Concern Outline:On certain subject vehicles, the check engine light is illuminated with DTC P0126:00 (Thermostat stuck open) stored in memory and one or more of the following symptoms may occur: Engine takes longer to warm up, Engine temperature gauge fluctuates, Low coolant temperature indicator (blue) light stays on longer or turns on while driving, Poor heater performance, especially at idle.This is a warranty extension for the specified repair only. Inspection and replacement of non-failed parts will not be eligible for reimbursement under this SSP to the dealer or customer. This program extends the warranty period for actual failures due to defects in workmanship or materials in accordance with the Mazda Warranty Policy and Procedures. If a customer arrives at your dealership with the concern described, please repair under this Special Service Program.
01-003-252025-04-01. Service bulletin. ENGINE. Some customers may experience a check engine light ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: Engine takes longer to warm up. Engine temperature gauge fluctuates. Low coolant temperature indicator (blue) light stays on longer or turns on while driving. Poor heater performance, especially at idle. NOTE: Vehicles with SKYACTIV-G 2.5T are not applicable to this service information. If DTC P2B61:00 (Coolant control valve circuit range/performance) accompanies DTC P0126:00, this TSB is not applicable. Diagnose DTCs according to the instructions on MGSS online.
01-002-252025-04-01. Service bulletin. ENGINE. Some vehicles may exhibit oil seepage or oil leak onto the engine front cover, which becomes more apparent with dust adhesion.
SA-007-252025-03-05. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. 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.
SA-004-25a2025-03-05. Service bulletin. ELECTRICAL SYSTEM. Key Transmitter Power Saving Function: When the key transmitter Power Saving Function is turned ON, transmitter battery power consumption is restricted, thereby extending the transmitter battery life and the following will occur: The engine will not start unless the key transmitter is held over the Start Stop button. • Outside door handle lock/unlock touch sensor is inoperative. • Key transmitter indicator lights are inoperative. • The following DTC's may be stored: DTC B13D3:94 (Communication error with remote transmitter) ○ DTC P1260:00 (Immobilizer system problem).
SA-004-252025-02-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Key Transmitter Power Saving Function: When the key transmitter Power Saving Function is turned ON, transmitter battery power consumption is restricted, thereby extending the transmitter battery life. NOTE: Some customers may complain about an engine no start. This may be caused by the customer inadvertently putting the key transmitter in Power Saving Function.
SA-003-252025-02-05. Service bulletin. UNKNOWN OR OTHER. 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.
09-002-25a2025-02-05. Service bulletin. UNKNOWN OR OTHER. Some vehicles may exhibit a partially missing image (shown in the circles below) from the Active Driving Display (ADD) on the front window and/or display.
09-002-252025-02-05. Service bulletin. UNKNOWN OR OTHER. Some vehicles may exhibit a partially missing image (shown in the circles below) from the Active Driving Display (ADD) on the front window and/or display.

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