Mazda CX-3 Service Bulletins

807 manufacturer communications on file.

• January 30, 2026•Document ID: 11028142

  Warranty Program/Extension
  ENGINE

  Mfr Comm. #:

  SSPD8 Parts and Warr a

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of the fail-safe thermostat is extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the original warranty start date. CONDITION OF CONCERN: 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. Mazda Motor Corporation has made a significant repair change to TSB 01-003/25 which also impacts Warranty Extension Special Service Program (SSPD8). Repair Procedure Update: Effective December 8th all repairs applicable to TSB 01-003/25 or SSPD8 must follow the new repair procedure. The repair now replaces the thermostat with a dummy plug for the coolant control valve (CCV) along with a required software update for the PCM. Prior Repairs: Any repairs previously completed with the replacement of the thermostat or coolant control valve assembly does not require a re-repair unless there is a verified failure following the diagnosis in the TSB. It is expected that there will be no further repairs made for this concern once the plug and software update has been completed. Therefore, a return visit for symptoms related to the TSB or SSP must contact the Technical Hotline for assistance. VITALLY IMPORTANT!: There must be a “Software Update” record for the PCM when using MDARS or IDS. • MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic Information (ODR Update) is not completed (or both), the vehicle will not be considered repaired and the warranty claim will be rejected. • IDS – Vehicles programed with IDS must Collect Diagnostic Data, and that data must be attached to the warranty claim. If the data is not attached to the claim, the vehicle will not be considered repaired and the warranty claim will be rejected, denied or debited. Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the dealer’s expense with great inconvenience to the Mazda customer. Failure to perform the software update could also potentially damage the engine which would not be covered by warranty and would expose your dealership to the cost of repairs.

  Associated Products (26)

  2025 Mazda CX-52025 Mazda Mazda32024 Mazda CX-52024 Mazda Mazda32023 Mazda CX-302023 Mazda CX-52023 Mazda Mazda32022 Mazda CX-302022 Mazda CX-52022 Mazda Mazda32021 Mazda CX-32021 Mazda CX-302021 Mazda CX-52021 Mazda Mazda32021 Mazda Mazda62020 Mazda CX-32020 Mazda CX-302020 Mazda CX-52020 Mazda Mazda32020 Mazda Mazda6+ 6 more
  Associated Documents

  • DownloadMC-11028142-0001.pdf↗
• January 26, 2026•Document ID: 11028133

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  SA-005-26

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  There are currently 2 methods for cutting a new auxiliary key blank. A. Auxiliary Key Trace Cut Method • B. Auxiliary Key Code Cut Method 2019 and newer models require a 10-digit key code to accurately cut keys • 5-digit codes CANNOT be provided for 2019 and newer vehicles (the traditional 5-digit code from the key tag or driver's door lock cylinder is not sufficient and will not be issued for key cutting on these models). • Only Mazda-approved key cutting machines can process these 10-digit codes. • Many older key machines do not support 10-digit codes and cannot be updated to do so. In these cases, dealers will need to purchase one of the newer Mazda-approved key cutting machines capable of handling this requirement. • For a list of current Mazda-approved machines and purchasing options, refer to the Mazda Dealer Equipment Program or view the current Mazda approved key machines below.

  Associated Products (78)

  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+ 58 more
  Associated Documents

  • DownloadMC-11028133-0001.pdf↗
• January 13, 2026•Document ID: 11028099

  Service Bulletin/Repair Instructions
  LANE DEPARTURE: BLIND SPOT DETECTION; ELECTRICAL SYSTEM

  Mfr Comm. #:

  09-005-26

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  If the right-side Blind Spot Monitoring (BSM) control module is replaced for any reason, it is also necessary to replace the left-side BSM control module in order to complete the radar aiming procedure. If the right-side BSM control module is replaced alone, "Automatic Configuration" and "BSM Radar Aiming" cannot be completed due to a programming error in the module. In most cases, if the left-side BSM control module is replaced alone, "Automatic Configuration" and "BSM Radar Aiming" can be completed without any problem (See CAUTION below for more details). Other possible symptoms that may be found if the right-side BSM module is replaced alone: BSM aiming fails “BSM OFF" indicator ON Center Display warning message BSM failsafe (No operation) DTC U3000:54 stored in memory DTC U1A4B:54 stored in memory (CX-3, MX-5 only) NOTE: Since a new BSM control module does not retain the vehicle specification information, it is necessary to acquire and store the vehicle specification information transmitted via CAN communication from the combination meter through automatic configuration after replacement.

  Associated Products (19)

  2024 Mazda MX-52023 Mazda MX-52022 Mazda MX-52021 Mazda CX-32021 Mazda MX-52020 Mazda CX-32020 Mazda MX-52019 Mazda CX-32019 Mazda Mazda22019 Mazda MX-52018 Mazda CX-32018 Mazda Mazda22018 Mazda MX-52017 Mazda CX-32017 Mazda Mazda22017 Mazda MX-52016 Mazda CX-32016 Mazda Mazda22016 Mazda MX-5
  Associated Documents

  • DownloadMC-11028099-0001.pdf↗
• January 8, 2026•Document ID: 11028091

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  01-001-26

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  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. • This concern may be caused if the coolant control valve fail-safe thermostat opens at a temperature lower than the normal temperature due to a deformation of the thermostat diaphragm. To eliminate the concern, the water flow control valve specification has been modified.

  Associated Products (24)

  2025 Mazda CX-52024 Mazda CX-52023 Mazda CX-302023 Mazda CX-52023 Mazda Mazda32022 Mazda CX-302022 Mazda CX-52022 Mazda Mazda32021 Mazda CX-32021 Mazda CX-302021 Mazda CX-52021 Mazda Mazda32021 Mazda Mazda62020 Mazda CX-32020 Mazda CX-302020 Mazda CX-52020 Mazda Mazda32020 Mazda Mazda62019 Mazda CX-32019 Mazda CX-5+ 4 more
  Associated Documents

  • DownloadMC-11028091-0001.pdf↗
• January 5, 2026•Document ID: 11028127

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  SA-001-26

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  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.

  Associated Products (78)

  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+ 58 more
  Associated Documents

  • DownloadMC-11028127-0001.pdf↗
• December 24, 2025•Document ID: 11026902

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  01-003-25b

  Date Added:

  January 3, 2026

  Manufacturer:

  MAZDA

  Summary

  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. • This concern may be caused if the coolant control valve fail-safe thermostat opens at a temperature lower than the normal temperature due to a deformation of the thermostat diaphragm. To eliminate the concern, the water flow control valve specification has been modified.

  Associated Products (24)

  2025 Mazda CX-52024 Mazda CX-52023 Mazda CX-302023 Mazda CX-52023 Mazda Mazda32022 Mazda CX-302022 Mazda CX-52022 Mazda Mazda32021 Mazda CX-32021 Mazda CX-302021 Mazda CX-52021 Mazda Mazda32021 Mazda Mazda62020 Mazda CX-32020 Mazda CX-302020 Mazda CX-52020 Mazda Mazda32020 Mazda Mazda62019 Mazda CX-32019 Mazda CX-5+ 4 more
  Associated Documents

  • DownloadMC-11026902-0001.pdf↗
• December 23, 2025•Document ID: 11027028

  Warranty Program/Extension
  ENGINE

  Mfr Comm. #:

  SSPD8a Repair

  Date Added:

  January 6, 2026

  Manufacturer:

  MAZDA

  Summary

  SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of the fail-safe thermostat is extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the original warranty start date. CONDITION OF CONCERN: 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. Mazda Motor Corporation has made a significant repair change to TSB 01-003/25 which also impacts Warranty Extension Special Service Program (SSPD8). Repair Procedure Update: Effective December 8th all repairs applicable to TSB 01-003/25 or SSPD8 must follow the new repair procedure. The repair now replaces the thermostat with a dummy plug for the coolant control valve (CCV) along with a required software update for the PCM. Prior Repairs: Any repairs previously completed with the replacement of the thermostat or coolant control valve assembly does not require a re-repair unless there is a verified failure following the diagnosis in the TSB. It is expected that there will be no further repairs made for this concern once the plug and software update has been completed. Therefore, a return visit for symptoms related to the TSB or SSP must contact the Technical Hotline for assistance. VITALLY IMPORTANT!: There must be a “Software Update” record for the PCM when using MDARS or IDS. • MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic Information (ODR Update) is not completed (or both), the vehicle will not be considered repaired and the warranty claim will be rejected. • IDS – Vehicles programed with IDS must Collect Diagnostic Data, and that data must be attached to the warranty claim. If the data is not attached to the claim, the vehicle will not be considered repaired and the warranty claim will be rejected, denied or debited. Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the dealer’s expense with great inconvenience to the Mazda customer. Failure to perform the software update could also potentially damage the engine which would not be covered by warranty and would expose your dealership to the cost of repairs.

  Associated Products (24)

  2025 Mazda CX-52024 Mazda CX-52023 Mazda CX-302023 Mazda CX-52023 Mazda Mazda32022 Mazda CX-302022 Mazda CX-52022 Mazda Mazda32021 Mazda CX-32021 Mazda CX-302021 Mazda CX-52021 Mazda Mazda32021 Mazda Mazda62020 Mazda CX-32020 Mazda CX-302020 Mazda CX-52020 Mazda Mazda32020 Mazda Mazda62019 Mazda CX-32019 Mazda CX-5+ 4 more
  Associated Documents

  • DownloadMC-11027028-0001.pdf↗
• December 17, 2025•Document ID: 11026917

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-061-25

  Date Added:

  January 4, 2026

  Manufacturer:

  MAZDA

  Summary

  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.

  Associated Products (139)

  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+ 119 more
  Associated Documents

  • DownloadMC-11026917-0001.pdf↗
• December 11, 2025•Document ID: 11027026

  Warranty Program/Extension
  ENGINE

  Mfr Comm. #:

  SSPD8 Repair

  Date Added:

  January 6, 2026

  Manufacturer:

  MAZDA

  Summary

  SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of the fail-safe thermostat is extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the original warranty start date. CONDITION OF CONCERN: 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. Mazda Motor Corporation has made a significant repair change to TSB 01-003/25 which also impacts Warranty Extension Special Service Program (SSPD8). Repair Procedure Update: Effective December 8th all repairs applicable to TSB 01-003/25 or SSPD8 must follow the new repair procedure. The repair now replaces the thermostat with a dummy plug for the coolant control valve (CCV) along with a required software update for the PCM. Prior Repairs: Any repairs previously completed with the replacement of the thermostat or coolant control valve assembly does not require a re-repair unless there is a verified failure following the diagnosis in the TSB. It is expected that there will be no further repairs made for this concern once the plug and software update has been completed. Therefore, a return visit for symptoms related to the TSB or SSP must contact the Technical Hotline for assistance. VITALLY IMPORTANT!: There must be a “Software Update” record for the PCM when using MDARS or IDS. • MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic Information (ODR Update) is not completed (or both), the vehicle will not be considered repaired and the warranty claim will be rejected. • IDS – Vehicles programed with IDS must Collect Diagnostic Data, and that data must be attached to the warranty claim. If the data is not attached to the claim, the vehicle will not be considered repaired and the warranty claim will be rejected, denied or debited. Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the dealer’s expense with great inconvenience to the Mazda customer. Failure to perform the software update could also potentially damage the engine which would not be covered by warranty and would expose your dealership to the cost of repairs.

  Associated Products (16)

  2023 Mazda CX-302023 Mazda Mazda32022 Mazda CX-302022 Mazda Mazda32021 Mazda CX-32021 Mazda CX-302021 Mazda Mazda32021 Mazda Mazda62020 Mazda CX-32020 Mazda CX-302020 Mazda Mazda32020 Mazda Mazda62019 Mazda CX-32019 Mazda Mazda32019 Mazda Mazda62018 Mazda Mazda6
  Associated Documents

  • DownloadMC-11027026-0001.pdf↗
• December 10, 2025•Document ID: 11026904

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  07-004-25a

  Date Added:

  January 3, 2026

  Manufacturer:

  MAZDA

  Summary

  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. NOTE: See parts information for Mazda Air Cooling Coil Coating and Kit part numbers.

  Associated Products (134)

  2026 Mazda CX-302026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-52025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-52024 Mazda Mazda32024 Mazda MX-52023 Mazda CX-302023 Mazda CX-52023 Mazda CX-92023 Mazda Mazda32023 Mazda MX-52022 Mazda CX-302022 Mazda CX-52022 Mazda CX-92022 Mazda Mazda3+ 114 more
  Associated Documents

  • DownloadMC-11026904-0001.pdf↗
• December 5, 2025•Document ID: 11027024

  Warranty Program/Extension
  ENGINE

  Mfr Comm. #:

  SSPD8 Parts and Warr

  Date Added:

  January 6, 2026

  Manufacturer:

  MAZDA

  Summary

  SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of the fail-safe thermostat is extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the original warranty start date. CONDITION OF CONCERN: 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. Mazda Motor Corporation has made a significant repair change to TSB 01-003/25 which also impacts Warranty Extension Special Service Program (SSPD8). Repair Procedure Update: Effective December 8th all repairs applicable to TSB 01-003/25 or SSPD8 must follow the new repair procedure. The repair now replaces the thermostat with a dummy plug for the coolant control valve (CCV) along with a required software update for the PCM. Prior Repairs: Any repairs previously completed with the replacement of the thermostat or coolant control valve assembly does not require a re-repair unless there is a verified failure following the diagnosis in the TSB. It is expected that there will be no further repairs made for this concern once the plug and software update has been completed. Therefore, a return visit for symptoms related to the TSB or SSP must contact the Technical Hotline for assistance. VITALLY IMPORTANT!: There must be a “Software Update” record for the PCM when using MDARS or IDS. • MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic Information (ODR Update) is not completed (or both), the vehicle will not be considered repaired and the warranty claim will be rejected. • IDS – Vehicles programed with IDS must Collect Diagnostic Data, and that data must be attached to the warranty claim. If the data is not attached to the claim, the vehicle will not be considered repaired and the warranty claim will be rejected, denied or debited. Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the dealer’s expense with great inconvenience to the Mazda customer. Failure to perform the software update could also potentially damage the engine which would not be covered by warranty and would expose your dealership to the cost of repairs.

  Associated Products (24)

  2025 Mazda CX-52024 Mazda CX-52023 Mazda CX-302023 Mazda CX-52023 Mazda Mazda32022 Mazda CX-302022 Mazda CX-52022 Mazda Mazda32021 Mazda CX-32021 Mazda CX-302021 Mazda CX-52021 Mazda Mazda32021 Mazda Mazda62020 Mazda CX-32020 Mazda CX-302020 Mazda CX-52020 Mazda Mazda32020 Mazda Mazda62019 Mazda CX-32019 Mazda CX-5+ 4 more
  Associated Documents

  • DownloadMC-11027024-0001.pdf↗
• December 5, 2025•Document ID: 11027023

  Warranty Program/Extension
  ENGINE

  Mfr Comm. #:

  SSPD8 Dlr Ltr

  Date Added:

  January 6, 2026

  Manufacturer:

  MAZDA

  Summary

  SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of the fail-safe thermostat is extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the original warranty start date. CONDITION OF CONCERN: 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. Mazda Motor Corporation has made a significant repair change to TSB 01-003/25 which also impacts Warranty Extension Special Service Program (SSPD8). Repair Procedure Update: Effective December 8th all repairs applicable to TSB 01-003/25 or SSPD8 must follow the new repair procedure. The repair now replaces the thermostat with a dummy plug for the coolant control valve (CCV) along with a required software update for the PCM. Prior Repairs: Any repairs previously completed with the replacement of the thermostat or coolant control valve assembly does not require a re-repair unless there is a verified failure following the diagnosis in the TSB. It is expected that there will be no further repairs made for this concern once the plug and software update has been completed. Therefore, a return visit for symptoms related to the TSB or SSP must contact the Technical Hotline for assistance. VITALLY IMPORTANT!: There must be a “Software Update” record for the PCM when using MDARS or IDS. • MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic Information (ODR Update) is not completed (or both), the vehicle will not be considered repaired and the warranty claim will be rejected. • IDS – Vehicles programed with IDS must Collect Diagnostic Data, and that data must be attached to the warranty claim. If the data is not attached to the claim, the vehicle will not be considered repaired and the warranty claim will be rejected, denied or debited. Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the dealer’s expense with great inconvenience to the Mazda customer. Failure to perform the software update could also potentially damage the engine which would not be covered by warranty and would expose your dealership to the cost of repairs.

  Associated Products (24)

  2025 Mazda CX-52024 Mazda CX-52023 Mazda CX-302023 Mazda CX-52023 Mazda Mazda32022 Mazda CX-302022 Mazda CX-52022 Mazda Mazda32021 Mazda CX-32021 Mazda CX-302021 Mazda CX-52021 Mazda Mazda32021 Mazda Mazda62020 Mazda CX-32020 Mazda CX-302020 Mazda CX-52020 Mazda Mazda32020 Mazda Mazda62019 Mazda CX-32019 Mazda CX-5+ 4 more
  Associated Documents

  • DownloadMC-11027023-0001.pdf↗
• December 4, 2025•Document ID: 11026901

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  01-003-25a

  Date Added:

  January 3, 2026

  Manufacturer:

  MAZDA

  Summary

  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. This concern may be caused if the coolant control valve fail-safe thermostat opens at a temperature lower than the normal temperature due to a deformation of the thermostat diaphragm. To eliminate the concern, the water flow control valve specification has been modified.

  Associated Products (24)

  2025 Mazda CX-52024 Mazda CX-52023 Mazda CX-302023 Mazda CX-52023 Mazda Mazda32022 Mazda CX-302022 Mazda CX-52022 Mazda Mazda32021 Mazda CX-32021 Mazda CX-302021 Mazda CX-52021 Mazda Mazda32021 Mazda Mazda62020 Mazda CX-32020 Mazda CX-302020 Mazda CX-52020 Mazda Mazda32020 Mazda Mazda62019 Mazda CX-32019 Mazda CX-5+ 4 more
  Associated Documents

  • DownloadMC-11026901-0001.pdf↗
• November 27, 2025•Document ID: 11026354

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  SA-056-25

  Date Added:

  December 5, 2025

  Manufacturer:

  MAZDA

  Summary

  When inspected, the differential or PTO oil is dark or black. This is considered normal and NO repair should be performed. During production, differential ring and pinion gears receive a manganese phosphate coating (commonly referred to as black oxide). This coating forms a porous, oil-retentive surface that improves boundary lubrication and reduces adhesive wear during initial contact cycles. Designed as a sacrificial layer, it is gradually removed under load throughout the break-in process. As a result, after the first few hundred miles, or at the initial gear oil service interval, the lubricant may appear darkened by the worn-off coating. It will contain trace ferrous particles from the normal run-in of the gear teeth and bearing surfaces. This condition is expected and does not, by itself, indicate an issue with the differential or PTO gears.

  Associated Products (58)

  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+ 38 more
  Associated Documents

  • DownloadMC-11026354-0001.pdf↗
• November 26, 2025•Document ID: 11026353

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  SA-055-25

  Date Added:

  December 5, 2025

  Manufacturer:

  MAZDA

  Summary

  Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern. NOTE: Before following this Service Alert repair procedure, ensure published TSBs in MGSS have been completed per model year.

  Associated Products (79)

  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+ 59 more
  Associated Documents

  • DownloadMC-11026353-0001.pdf↗
• November 19, 2025•Document ID: 11026347

  Service Bulletin/Repair Instructions
  WHEELS

  Mfr Comm. #:

  SA-020-25a

  Date Added:

  December 5, 2025

  Manufacturer:

  MAZDA

  Summary

  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.

  Associated Products (77)

  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+ 57 more
  Associated Documents

  • DownloadMC-11026347-0001.pdf↗
• November 14, 2025•Document ID: 11026095

  Service Bulletin/Repair Instructions
  STEERING

  Mfr Comm. #:

  06-002-25

  Date Added:

  December 4, 2025

  Manufacturer:

  MAZDA

  Summary

  Some vehicles may exhibit a light resistance and/or an unusual noise when turning the steering wheel in either direction. This concern may be caused by insufficient lubrication between the worm wheel gear and worm shaft. To eliminate this concern, the amount of grease between the worm wheel gear and worm shaft was increased and the housing end cover shape was modified.

  Associated Products (6)

  2021 Mazda CX-32020 Mazda CX-32019 Mazda CX-32018 Mazda CX-32017 Mazda CX-32016 Mazda CX-3
  Associated Documents

  • DownloadMC-11026095-0001.pdf↗
• November 8, 2025•Document ID: 11026350

  Service Bulletin/Repair Instructions
  POWER TRAIN; SUSPENSION; STEERING; WHEELS

  Mfr Comm. #:

  SA-051-25

  Date Added:

  December 5, 2025

  Manufacturer:

  MAZDA

  Summary

  Noise, Vibration, and Harshness (NVH) Diagnostic Guidelines Diagnostic Guidelines When diagnosing NVH concerns, it is essential to first classify the issue into one of three primary categories: Noise, Vibration, or Harshness. Many customer complaints may involve overlapping symptoms, such as both noise and vibration, so identifying the dominant characteristic is critical. Once the primary symptom is determined, follow the appropriate diagnostic path. For example, if a concern includes both noise and vibration but is related to vehicle speed, the vibration diagnostic path should be followed. When considering component replacement during the diagnostic process, it is best practice to start with the lowest cost or most accessible part unless diagnostic evidence clearly identifies a more expensive or complex component as the root cause. This approach helps minimize repair costs and avoids unnecessary part replacements. For example, a growling or bearing whine noise may be mistakenly attributed to internal components in the differential, transfer unit, or transmission, when the actual source is a wheel bearing. Misdiagnosis like this can lead to unnecessary repairs, added time and cost. To help prevent this, always follow the guidelines in the repair procedure.

  Associated Products (77)

  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+ 57 more
  Associated Documents

  • DownloadMC-11026350-0001.pdf↗
• November 6, 2025•Document ID: 11026351

  Service Bulletin/Repair Instructions
  POWER TRAIN; ENGINE

  Mfr Comm. #:

  SA-052-25

  Date Added:

  December 5, 2025

  Manufacturer:

  MAZDA

  Summary

  Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked. For this concern, inspect the vehicle for any trace of a fluid or oil leak and use the following examples as a guide to determine if it is severe enough to require a repair, or just to clean the area and monitor it at the next service. Examples of residue or seepage that may not be considered a leak and that may not require repair based on splash shield inspection.

  Associated Products (75)

  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+ 55 more
  Associated Documents

  • DownloadMC-11026351-0001.pdf↗
• October 23, 2025•Document ID: 11024994

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-007-25b

  Date Added:

  November 5, 2025

  Manufacturer:

  MAZDA

  Summary

  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.

  Associated Products (46)

  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+ 26 more
  Associated Documents

  • DownloadMC-11024994-0001.pdf↗