Mazda CX-70 Service Bulletins (2025)

262 manufacturer communications on file.

• March 4, 2026•Document ID: 11030631

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-012-26a

  Date Added:

  April 2, 2026

  Manufacturer:

  MAZDA

  Summary

  This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-012/26 02/26/2026 DESCRIPTION Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT REPAIR PROCEDURE 1. Verify the concern. 2. Check if any of the following DTCs are stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT Are the following DTCs stored? YES: Proceed to next step. NO: This service information does not apply. Continue troubleshooting using MGSS. 3. Check for electrical devices in the vehicle such as a device connected to USB hub, Dash Cam, Insurance Device, FasTrak........ect. Are there any customer electrical devices in the vehicle? YES: Document customer device used, then go to the next step. NO: Go to the next step. 4. Check for a Navi SD Card. Is the vehicle equipped with a Navi SD Card? YES: Replace the Navi SD Card. NO: Go to next step. 5. Complete the Dealer Connected Vehicle Questionnaire. 6. Collect CMU log data. Go to Infotainment/TCU --> Collecting CMU Log Data --> CMU Log Data Retrieval Instructions 7. Collect TCU log data. Go to Infotainment/TCU --> TCU Log Data Retrieval Instructions --> CMU Log Data Retrieval Instructions 8. Contact Hotline for additional assistance. 9. Release the vehicle to the customer. NOTE: This concern is currently under investigation

  Associated Products (13)

  2026 Mazda CX-302026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32025 Mazda CX-302025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32024 Mazda CX-302024 Mazda CX-902024 Mazda Mazda3
  Associated Documents

  • DownloadMC-11030631-0001.pdf↗
• February 27, 2026•Document ID: 11029531

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; UNKNOWN OR OTHER

  Mfr Comm. #:

  SA-012-26

  Date Added:

  March 4, 2026

  Manufacturer:

  MAZDA

  Summary

  This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-060/25 12/16/25 Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT

  Associated Products (13)

  2026 Mazda CX-302026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32025 Mazda CX-302025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32024 Mazda CX-302024 Mazda CX-902024 Mazda Mazda3
  Associated Documents

  • DownloadMC-11029531-0001.pdf↗
• February 26, 2026•Document ID: 11029238

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  09-011-26

  Date Added:

  March 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 09-019/25 04/15/25 Some vehicles equipped with the Adaptive Front lighting System (AFS) may exhibit the exterior light warning light/exterior light warning indication on while driving or when the ignition is turned on and DTC B10A3:86 (Error signal received from swivel actuator (LH)) stored in memory. NOTE: The combination light with AFS can be distinguished if it is equipped with the parking light/daytime running light (DRL) that illuminates while the ignition is turned on. This may be caused by the AFS Control Module detecting a false headlight malfunction. This concern will likely occur when the light returns to the center position after swiveling. To eliminate this concern, the control software of the AFS control module has been further modified.

  Associated Products (5)

  2025 Mazda CX-702025 Mazda CX-902025 Mazda MX-52024 Mazda CX-902024 Mazda MX-5
  Associated Documents

  • DownloadMC-11029238-0001.pdf↗
• February 26, 2026•Document ID: 11029225

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  01-005-26

  Date Added:

  March 3, 2026

  Manufacturer:

  MAZDA

  Summary

  Some vehicles may exhibit green residue (yellow circle) on the outer surface of the coolant reserve tank, which appears to be coolant blowback. This is caused by coolant seeping out and appearing as leakage from small pores (slight gaps) formed due to the deterioration of the coolant reserve tank (sub) material. To eliminate this concern, the material of the coolant reserve tank (sub) will be modified.

  Associated Products (5)

  2026 Mazda CX-702026 Mazda CX-902025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11029225-0001.pdf↗
• February 20, 2026•Document ID: 11029228

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  09-009-26

  Date Added:

  March 3, 2026

  Manufacturer:

  MAZDA

  Summary

  Some vehicles exhibit creaking noise from the left side power liftgate (PLG) drive unit when moving (opening/closing) the power liftgate by hand and /or automatically. The noise tends to occur during moving, particularly at the start of opening or closing. As the condition progresses, it may be accompanied by functional issues such as increased operating effort, a “hard to move” feeling, or the PLG stops partway during opening or closing.

  Associated Products (5)

  2026 Mazda CX-702026 Mazda CX-902025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11029228-0001.pdf↗
• February 11, 2026•Document ID: 11029227

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  09-008-26

  Date Added:

  March 3, 2026

  Manufacturer:

  MAZDA

  Summary

  This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 09-021/25 04/23/25 Some customers may complain about a creaking noise coming from the door area when driving on rough roads. This may be caused by a stick-slip occuring as plastic components of the door latch deform due to external forces applied from the striker to the latch and actuator.

  Associated Products (3)

  2025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11029227-0001.pdf↗
• February 5, 2026•Document ID: 11029491

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  SA-007-26

  Date Added:

  March 4, 2026

  Manufacturer:

  MAZDA

  Summary

  On some vehicles, an engine oil leak from the rear of the engine at the turbocharger drain back tube could be be confused as an oil leak from behind the bell housing. The bolt holes for the drain back tube to the block are drilled through to the inside of the engine and thread sealer was not properly applied to the bolts threads, causing oil to leak past the threads. NOTE: The WSM was updated to show these bolts are a to be replaced if removed. New bolts will have thread sealer already applied.

  Associated Products (3)

  2025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11029491-0001.pdf↗
• February 3, 2026•Document ID: 11028093

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  01-002-26

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  Some vehicles may exihibit a vibration in the accelerator pedal and steering wheel when accelerating during a sharp left-hand turn. An abnormal noise may also be heard from the footwell area. This may be caused by insufficient clearance between the engine mount stopper rubber and the engine mount bracket. Customer may state: - Vehicle shudders/vibrates on left turns, most often when accelerating from a stop or entering a driveway. - They feel a pop or grind in the accelerator pedal when the vibration occurs. - They hear a rumbling or grinding noise, mainly from the right side, during the left-turn shudder. NOTE: The condition does not occur at shallow steering angles or when the vehicle is stationary and the steering effort remains unchanged when the vibration and noise are present.

  Associated Products (5)

  2026 Mazda CX-702026 Mazda CX-902025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11028093-0001.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 (40)

  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+ 20 more
  Associated Documents

  • DownloadMC-11028133-0001.pdf↗
• January 13, 2026•Document ID: 11028097

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  09-003-26

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  Some vehicles may exhibit a key-in lock situation when the speed-sensitive door lock activates unexpectedly while idling in the P-range. This may be caused by the noise generated by the Anti-lock Braking System (ABS) wheel speed sensor being mistakenly recognized as a vehicle speed pulse. To eliminate this concern, the IC chip in the ABS wheel speed sensor has been modified.

  Associated Products (5)

  2026 Mazda CX-702026 Mazda CX-902025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11028097-0001.pdf↗
• January 7, 2026•Document ID: 11028095

  Service Bulletin/Repair Instructions
  SEATS

  Mfr Comm. #:

  09-001-26

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  There are wrinkles on the leather seat cushion and/or seat back surface at PDI, when new vehicle is delivered, or when new upholstery is installed under Warranty repair. NOTE: This repair is not a permanent fix, it is meant to make new seats look their best when the vehicle is first presented to the customer. Wrinkles may not be completely removed after the repair is completed. Leather is a natural material and may develop some wrinkles due to aging and wear during normal usage.

  Associated Products (33)

  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+ 13 more
  Associated Documents

  • DownloadMC-11028095-0001.pdf↗
• January 6, 2026•Document ID: 11028129

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY; ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-003-26

  Date Added:

  February 3, 2026

  Manufacturer:

  MAZDA

  Summary

  Customers may report that the liftgate does not open or unlatch (from closed or an ajar position). This may happen after a discharged battery or after charging a dead battery.

  Associated Products (6)

  2026 Mazda CX-52026 Mazda CX-702026 Mazda CX-902025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11028129-0001.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 (40)

  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+ 20 more
  Associated Documents

  • DownloadMC-11028127-0001.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 (40)

  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+ 20 more
  Associated Documents

  • DownloadMC-11026917-0001.pdf↗
• December 17, 2025•Document ID: 11026913

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-060-25

  Date Added:

  January 3, 2026

  Manufacturer:

  MAZDA

  Summary

  Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) • U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT

  Associated Products (10)

  2026 Mazda CX-302026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32025 Mazda CX-302025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda3
  Associated Documents

  • DownloadMC-11026913-0001.pdf↗
• December 17, 2025•Document ID: 11026912

  Service Bulletin/Repair Instructions
  FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM

  Mfr Comm. #:

  SA-059-25

  Date Added:

  January 3, 2026

  Manufacturer:

  MAZDA

  Summary

  Some vehicles may experience the CHECK ENGINE light ON with one of the following DTCs or a combination of these DTCs. P0451 • P2422 • P2451 • P0441 • This may be caused by a concern with the fuel pressure sensor or shutter valve operation.

  Associated Products (5)

  2026 Mazda CX-702026 Mazda CX-902025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11026912-0001.pdf↗
• December 17, 2025•Document ID: 11026908

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; UNKNOWN OR OTHER

  Mfr Comm. #:

  SA-017-25d

  Date Added:

  January 3, 2026

  Manufacturer:

  MAZDA

  Summary

  Mazda Connect Services - Frequently Asked Questions (FAQ)

  Associated Products (34)

  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+ 14 more
  Associated Documents

  • DownloadMC-11026908-0001.pdf↗
• December 16, 2025•Document ID: 11026916

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM; EXTERIOR LIGHTING

  Mfr Comm. #:

  SA-023-25c

  Date Added:

  January 4, 2026

  Manufacturer:

  MAZDA

  Summary

  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 " ". Page

  Associated Products (34)

  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+ 14 more
  Associated Documents

  • DownloadMC-11026916-0001.pdf↗
• December 12, 2025•Document ID: 11026911

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM; POWER TRAIN

  Mfr Comm. #:

  SA-058-25

  Date Added:

  January 3, 2026

  Manufacturer:

  MAZDA

  Summary

  The 7G large platform utilizes a new 8-speed automatic transmission. Due to changes in the parking lock mechanism, which is now hydraulically operated, the neutral range in the transmission can only be achieved if the engine is running (or “Ready-On” for PHEV). With this design, there is no provision to manually engage neutral. This can cause challenges to dealers, customers, or towing providers when a vehicle cannot start and can't move, usually due to a discharged (dead) battery. In the event that a vehicle cannot be started or achieve “ready-on”, wheel dollies must be used to allow the vehicle to be rolled and moved. NOTE: The following procedure is for moving vehicle around the service shop and not for towing purposes. Please reference the owner's manual for towing instructions.

  Associated Products (5)

  2026 Mazda CX-702026 Mazda CX-902025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11026911-0001.pdf↗
• December 5, 2025•Document ID: 11026910

  Service Bulletin/Repair Instructions
  SUSPENSION; UNKNOWN OR OTHER; SERVICE BRAKES

  Mfr Comm. #:

  SA-057-25

  Date Added:

  January 3, 2026

  Manufacturer:

  MAZDA

  Summary

  A technician may report that DTC U0415:68 - VCM (Vehicle Control Module) cannot be cleared after replacing the DSC (Dynamic Stability Control) module.

  Associated Products (5)

  2026 Mazda CX-702026 Mazda CX-902025 Mazda CX-702025 Mazda CX-902024 Mazda CX-90
  Associated Documents

  • DownloadMC-11026910-0001.pdf↗