Mazda CX-90 Service Bulletins (2027)
6 manufacturer communications on file.
- September 18, 2026•Document ID: 11037632Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- SA-012-26d
- Date Added:
- October 1, 2026
- Manufacturer:
- MAZDA
SummaryDESCRIPTION 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.
Associated Products (15)Associated Documents - September 17, 2026•Document ID: 11037900Service Bulletin/Repair InstructionsUNKNOWN OR OTHER; ELECTRICAL SYSTEM
- Mfr Comm. #:
- SA-042-26a
- Date Added:
- October 3, 2026
- Manufacturer:
- MAZDA
SummaryMazda Connected Services - Frequently Asked Questions (FAQ) This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA-042/26 06/30/26 DESCRIPTION Frequently Asked Questions (FAQ) Index General Questions MAZDA CONNECT Indication Setup and Getting Started Dealer Processes Registration / Enrollment / Take-Over Customer Subscription Status WI-FI General Informatio Opening the TCU Communication Line WI-FI How-To Conditions for Remote Engine Start Will Not Function WI-FI Trial Period Conditions for Remote Engine Start Function Will turn engine OFF Interacting With The App TCU Communication Line Status Service Issues Educational Videos Troubleshooting Resources MyMazda App Error Codes Customer Opt-Out
Associated Products (40)2027 Mazda CX-502027 Mazda CX-902026 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-90+ 20 moreAssociated Documents - September 10, 2026•Document ID: 11037635Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- SA-059-26
- Date Added:
- October 1, 2026
- Manufacturer:
- MAZDA
SummaryThis Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-029/24 05/09/24 DESCRIPTION The CX-90 and CX-70 PHEV are equipped with two electric water pumps that look similar but have different part numbers. CAUTION: If the wrong water pump is ordered or they are reversed, DTC U019F could be set.
Associated Products (6)Associated Documents - August 20, 2026•Document ID: 11037014Service Bulletin/Repair InstructionsSTRUCTURE:BODY; FUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- SA-056-26
- Date Added:
- September 4, 2026
- Manufacturer:
- MAZDA
SummaryDESCRIPTION Some customers will report that their fuel filler lid (door) was stuck closed and would not open to refuel the vehicle. The fuel door may or may not be missing. REPAIR PROCEDURE 1. Check the system operation as noted in the PHEV Refueling Procedure and check for DTC.
Associated Products (6)Associated Documents - August 15, 2026•Document ID: 11037009Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- SA-051-26
- Date Added:
- September 4, 2026
- Manufacturer:
- MAZDA
SummaryThis Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-076/24 10/22/24 DESCRIPTION This Service Alert provides the mechanism for causing the following symptoms at low outside temperatures: Although the SOC shown in the instrument cluster looks to be enough, the vehicle cannot drive using EV mode. The maximum EV driving distance is lower than expected, compared to the performance at higher outside temperatures.
Associated Products (6)Associated Documents - August 7, 2026•Document ID: 11037008Service Bulletin/Repair InstructionsUNKNOWN OR OTHER; ELECTRICAL SYSTEM
- Mfr Comm. #:
- SA-050-26
- Date Added:
- September 4, 2026
- Manufacturer:
- MAZDA
SummaryDESCRIPTION Some vehicles may continue to display the recall notification "IMPORTANT NOTICE. VIEW VEHICLE STATUS MONITOR FOR DETAILS" on the center display even after the recall has been completed. NOTE: Once the warranty claim for the recall campaign is approved by Mazda Japan, the recall notification will be automatically removed via Connected Services on the following day or later. This condition may occur if the Connected Services subscription was canceled while the recall notification was still active. ACTION TO BE TAKEN If you encounter the situation above, use MDARS to manually remove the center display recall notification. Note: MDARS can only remove the recall notification when MCVV shows no CV contract.
Associated Products (23)2027 Mazda CX-502027 Mazda CX-902026 Mazda CX-302026 Mazda CX-502026 Mazda CX-702026 Mazda CX-902026 Mazda Mazda32026 Mazda MX-52025 Mazda CX-302025 Mazda CX-502025 Mazda CX-702025 Mazda CX-902025 Mazda Mazda32025 Mazda MX-52024 Mazda CX-302024 Mazda CX-502024 Mazda CX-902024 Mazda Mazda32024 Mazda MX-52023 Mazda CX-30+ 3 moreAssociated Documents