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Service bulletins for the 2024 Mazda CX-90

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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
09-001-242024-02-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.
07-001-242024-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Some vehicles may exhibit a loud vibration noise when the electric A/C compressor is operating. Due to processing variation of the counter-balance bushing (a weight to balance eccentric rotation) installed in the electric compressor, some of the bushing strongly interferes with the shaft, resulting in the humming noise. To eliminate this concern, the machining accuracy of the counter-balance bushing has been improved.
SA-025-23a2024-01-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated.. CAUTION: DO NOT swap TCU with another vehicle as the TCU is VIN locked after activation. A TCU swap with another vehicle will disable Connected Services on both vehicles. If TCU activation is not performed, connected vehicle functions will not operate. This will have a negative impact on the customer because they will need to return to the dealer for repairs.
SA-021-23b2024-01-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE. Qi Wireless Charger symptom troubleshooting
SA-015-23e2024-01-06. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. Frequently Asked Questions (FAQ): General Questions Reception Level Inspection Setup and Getting Started Dealer Processes Registration / Enrollment TCU Activation WI-FI General Informatio Conditions for Remote Engine Start Will Not Function WI-FI How-To Conditions for Remote Engine Start Function Will turn engine OFF WI-FI Trial Period Deactivation Mode Interacting With The App Educational Videos Service Issues Resources Troubleshooting Page
09-039-23a2024-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Some customers may experience no sound from the audio system and/or the audio source cannot be changed. This concern may be caused by the remote tuner not operating properly under certain situations. To eliminate this concern, the remote tuner control software has been modified.
09-045-232024-01-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.
SA-083-232024-01-04. Service bulletin. ELECTRICAL SYSTEM. This Service Alert provides information for the following symptoms. Although Battery State of Charge (SOC) is full, Maximum Driving Distance Display shows 1 mile (1 km). Although Battery SOC is full, the vehicle cannot drive using EV mode (using electric motor power only) and will use HEV mode (using both electric power and a gas engine. This is caused by low ambient temperature and low battery temperature. EV mode is suspended until the battery warms up to protect it from degradation and the gas engine will power the vehicle. This is normal operation. If the battery pack is able to warm up, EV mode will start and the display will change to show the correct Maximum Driving Distance Display for EV mode.
SA-084-232024-01-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Some customers with a PHEV CX-90 may report a warning light or a reported issue of A/C malfunction. Upon inspection, the technician will discover that the vehicle has the P0531 diagnostic trouble code set.
SSPD1-D4a2023-12-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. RECALL 6223J, 6323J, SSPD1, SSPD2, SSPD3, SSPD4 - MULTIPLE CAMPAIGNS REPAIR PROCEDURE AND MULTIPLE MODULE REPROGRAMMING.
SA-034-23b2023-12-05. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Telematics Malfunction. Have the Vehicle Inspected error message. Master Warning light ON, DTC U3000:04 (Telematics communication unit internal malfunction) is stored.
SA-030-23b2023-12-05. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Some customers may experience a warning sound and instrument cluster message "Battery Saving Mode. Drive Vehicle to Charge Battery." This message may appear under the following conditions: Washing Car lunch in car with key ON Showroom vehicle Door left open Doors opened several times prior to starting vehicle After an external battery charge
09-042-232023-12-05. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE; LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. Some customers may complain that the power liftgate may open unintentionally at a stop or while parking. This may be caused by the power liftgate button in the remote transmitter being pressed unintentionally in a pocket or a bag. To help with this concern, the control software of the Body Control Module (BCM) has been modified to optimize the operation parameter for the power liftgate button in the remote transmitter. NOTE: The operation itself is same as before (hold the power liftgate button to open).
09-039-232023-12-05. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. Some customers may experience no sound from the audio system and/or the audio source cannot be changed. This concern may be caused by the remote tuner not operating properly under certain situations. To eliminate this concern, the remote tuner control software has been modified.
09-037-23a2023-12-05. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY; UNKNOWN OR OTHER. Some customers may experience that the passenger-side outer door mirror glass tilts down when unlocking and opening the driver's door. This is caused by a door-electrical supply unit malfunction due to changes in the vehicle power conditions. To eliminate this concern, the control software of the door-electrical supply unit (passenger's side) has been modified.
09-031-23a2023-12-05. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES. Some vehicles may exhibit that the power liftgate cannot be opened while stuck in an partially latched or fully opened/closed position, or it may reverse and open just before fully closing. with the following DTCs possibly stored in memory. B1451:02 BCM - Motor return switch circuit malfunction B1456:62 BCM - Latch condition malfunction U2646:16 BCM - Power liftgate (PLG) control module low power supply voltage input This may be caused by improper control software of the power liftgate control module. To eliminate this concern, the control software of the power liftgate control module has been modified.
01-007-23a2023-12-05. Service bulletin. EQUIPMENT; 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.
SA-032-23a2023-11-02. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. 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.
SA-059-232023-11-01. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM. When the power windows are operated many times without being fully closed, small errors of the window position sensor may accumulate and cause improper operation of the jam-safe function. To reduce the risk of this occurrence, the AUTO function is disabled if the power window is operated 10 consecutive times without being fully closed (turning the ignition OFF and then ON does not reset the counting). If the power window is fully closed before the 10th time, the counting restarts and the AUTO function is not deactivated.
09-037-232023-11-01. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Some customers may experience that the passenger-side outer door mirror glass tilts down when unlocking and opening the driver's door. This is caused by a door-electrical supply unit malfunction due to changes in the vehicle power conditions. To eliminate this concern, the control software of the door-electrical supply unit (passenger's side) has been modified.
15-003-232023-11-01. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. While idling or parking, some customers may experience the i-ACTIVSENSE warning appears in the instrument cluster and the parking sensor OFF switch in the cluster switch illuminates. Upon inspection, any of the following DTC B1B** are stored in memory.
SA-051-23a2023-11-01. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; ENGINE AND ENGINE COOLING. Some customers may experience a vehicle no start (no "Ready-ON") due to the 12V battery discharged or the High Voltage (HV) battery discharged. This may be caused by: Ignition left ON when exiting the vehicle (exiting the vehicle during "Ready-On"). Door/liftgate opened multiple times without ignition "Ready-ON" or driving vehicle. Installation of aftermarket electronic devices. To minimize THE battery drain concern, ensure that the vehicle shift selector is in Park when exiting and verify the ignition is turned OFF when exiting. NOTE: If multiple door/liftgate opening without "Ready-ON', drive vehicle to charge 12V battery.
SA-062-232023-11-01. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC. Some customers may experience a "Push Button Start Malfunction. Have the Vehicle Inspected" warning message and the following DTC(s) may be stored. C0040:24 - Brake switch (No.1 signal) circuit malfunction P0504:00 - Brake switch system: Circuit malfunction
SA-066-232023-11-01. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Some customers will report their window will not auto-close. This may be caused by the vehicle learning the window current draw incorrectly because the door moved when the initialization was performed.
SA-053-232023-10-05. Service bulletin. ELECTRICAL SYSTEM. Some customers may report that the charge lid (door) on the vehicle was stuck closed and would not open to charge the vehicle. The charge lid may or may not be missing.

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