2024 Mazda CX-90 Technical Service Bulletins

523 technical service bulletins (TSBs) are on record for the 2024 Mazda CX-90. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10252369Mar 21, 2024Suspension. Some vehicles may exhibit a creaking or squeaking noise from the lower control arm at the front suspension when traveling over a bump while turning at low-speed. A stick-slip phenomenon may occur between the stopper rubber (2) and the bracket (3) in the front lower arm (rear) (1).
• 10252379Mar 19, 2024Engine cooling, Electrical system, Equipment, Transmission and drivetrain. CX-70 and CX-90 service cautions for new and revised features. The CX-70 and CX-90 have new and revised features that are different from previous models and may be difficult to understand. This Service Alert provides valuable information to support potential dealer and customer concerns.
• 10252378Mar 15, 2024Electrical system, Engine cooling, Transmission and drivetrain. 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.
• 10252377Mar 15, 2024Electrical system, Brakes, Wheels, Transmission and drivetrain. 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…
• 10252509Mar 14, 2024Engine cooling, Electrical system, Equipment. 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
• 10252503Mar 14, 2024Electrical system. 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.
• 10252371Mar 14, 2024Visibility (wipers, defrost, mirrors). This is caused by the quarter window glass molding deforming due to harmful external conditions such as extreme heat or excessive force applied, and the double-sided tape fixing the molding’s back side detaches. To eliminate this concern, the double-sided tape has been widened to enhance attachment.
• 10252508Mar 8, 2024Brakes. 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.
• 10252507Mar 6, 2024Transmission and drivetrain. Due to limitations, certain vehicles from 2016 to current models might display an inaccurate transmission part number in the Global Electronic Parts Catalog (GEPC). To provide support in such cases, a temporary lookup guide has been developed for assistance.
• 10252376Mar 6, 2024Electrical system. CX-90 PHEV Battery and Order Requests - To confirm parts availability and ETA request details for the EV Battery part numbers listed below, please contact the Dealer Assistance Group.
• 10251296Feb 29, 2024Suspension. Some vehicles may exhibit a creaking or squeaking noise from the lower control arm at the front suspension when traveling over a bump while turning at low-speed. A stick-slip phenomenon may occur between the stopper rubber (2) and the bracket (3) in the front lower arm (rear) (1).
• 10251305Feb 22, 2024Fuel system. Some customers may complain that the fuel level gauge needs a long time to show the correct level after refueling. This may be caused by improper control software of the instrument cluster. To eliminate this concern, the control software of the instrument cluster has been modified.
• 10251391Feb 21, 2024Engine cooling, Equipment, Electrical system. Frequently Asked Questions (FAQ): General Questions, Reception Level Inspection, Setup and Getting Started, Dealer Processes, Registration / Enrollment, TCU Activation, WI-FI General Information, 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…
• 10251369Feb 16, 2024Tires, Suspension, Wheels. Some vehicles may exhibit a steering shimmy or body vibration during the PDI test drive or during the first few miles of driving after the vehicle has been delivered to the customer due to flat spots on the tires. Flat spots on tires may be caused by improper maintenance during dealer storage (e.g.: Vehicle was left stationary for a prolonged period of time in high ambient temperatures).
• 10251361Feb 13, 2024Electrical system. 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.
• 10251304Feb 13, 2024Latches, locks and linkages, Body and structure. Some customers may complain about clicking noise coming from the liftgate latch-and-lock actuator (lock actuator) when driving on bumpy roads. This is caused by stick-slip friction between the lock actuator and the lock striker due to wear debris originating from the friction between them. To eliminate this concern, the lock striker coating has been changed to prevent coating wear.
• 10251387Feb 12, 2024Steering, Engine cooling, Brakes, Transmission and drivetrain, Wheels, Tires. Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers.
• 10251303Feb 12, 2024Equipment. Some customers may complain that the cup holder lid does not open/close. This malfunction is caused by a fracture of the cup holder lid’s lock pin due to excessive force applied on the lid.
• 10251295Feb 12, 2024Engine cooling. Some customers may experience a check engine light illumination at idle while stopped with DTC P0300:00 stored, resulting in rough idle conditions. • P0300:00: Random misfire detected This concern is caused by improper engine control in the idle range. To eliminate the concern, the PCM control software has been modified.
• 10251307Feb 9, 2024Electrical system, Vehicle speed control. A kick-down switch has been adopted to determine when the customer has fully depressed the throttle pedal for maximum acceleration. A load can be felt while the accelerator pedal is being depressed. When the accelerator pedal is depressed further, the kick-down switch is activated and a click is felt. The driver can control the kick-down by knowing the amount of accelerator depression. An electrical signal is not…
• 10251390Feb 8, 2024Equipment, Electrical system, Engine cooling. Frequently Asked Questions (FAQ): General Questions, Reception Level Inspection, Setup and Getting Started, Dealer Processes, Registration / Enrollment, TCU Activation, WI-FI General Information, 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…
• 10251302Feb 7, 2024Body and structure, Visibility (wipers, defrost, mirrors). Some vehicles may exhibit a rattle noise from the panorama sunroof. This may be caused by: Body vibration while driving and/or outside-temperature changes creating slight gaps between the plastic grommets and the roof reinforcement cover during use. A slight gap between the drip rail and the roof reinforcement, causing interference. To eliminate this concern, the shape of the panorama sunroof unit will be modified.
• 10251297Feb 6, 2024Suspension. Some vehicles may experience differential oil leaking from the oil seal (RH side) at the front differential. This is caused by an inappropriate assembly process of the front differential to the oil pan (vehicle side). To eliminate this concern the front differential assembly process has been changed.
• 10251367Feb 5, 2024Brakes. NOTE: Before proceeding, perform MGSS Vehicle Inquiry (MGSS -> Other Applications -> Warranty Veh. Inq. -> RECALLS / SPECIAL SERVICE PROGRAMS -> Status) and check for Open campaigns. If any of the following campaigns are open, complete the campaign before proceeding with this service information.
• 10251358Feb 5, 2024Engine cooling, Transmission and drivetrain. 2nd Warning, Warranty Claim Denials - SAFETY RECALLS 6223J, 6323J, and SPECIAL SERVICE CAMPAIGNS SSPD1, SSPD2, SSPD3, SSPD4 - MULTIPLE CAMPAIGNS REPAIR PROCEDURE AND MULTIPLE MODULE REPROGRAMMING.
• 10251301Feb 5, 2024Electrical system. Some customers may experience that after VCM reprogramming (such as with TSB 15-002/23), the driver recognition information (of the Driver Personalization System) is not displayed in the center display in some situations. This is caused by improper control software of the Vehicle Control Module (VCM). To eliminate this concern, the control software of the VCM has been modified.
• 10251298Feb 5, 2024Electrical system, Other or unknown. Some customers may experience that the air conditioning system stops working. Upon inspection, DTC B1082:19 [DASH_ESU] (Air mix actuator (RH) circuit malfunction) is stored in memory. DTC B1082:19 is stored as a past malfunction and continues in one drive cycle, then returns normal at the next drive cycle. Due to the electrical noise caused when the air mix actuator is driven too quickly, a false malfunction may be…
• 10251300Feb 2, 2024Seats. Some vehicles may exhibit that the tilt switch knob on the power seat does not return to its original position after operating it and/or a stick-slip noise may occur when operating the power seat tilt switch. This may be caused by the frictional resistance of the tilt switch knob increasing in a low-temperature environment. To eliminate this concern, a solid film lubricant has been applied to the switch knob to…
• 10251299Feb 2, 2024Body and structure. Some customers may complain about an unusual noise (rattling or cracking noise) coming from the front right side of the vehicle when driving over bumpy roads. This may be caused by the washer tank fixing pin (1), which is inserted to the body, and the hole where the pin is inserted colliding with each other when the vehicle is moving over bumps. To eliminate this concern, a new protector is attached to the washer…
• 10251373Feb 1, 2024Electrical system, Equipment. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
• 10249494Jan 31, 2024Brakes. Some vehicles may exhibit check engine light turns on with DTC P0504:00 [PCM] (Brake switch circuit problem) stored in memory. This may be caused by the PCM incorrectly reading the brake switch input. To eliminate this concern, the control software of the PCM has been modified.
• 10249506Jan 30, 2024Lane departure, Other or unknown, Steering, Equipment. Some vehicles may exhibit one or both of following, making the customer uncomfortable with the operation; 1. Sometimes the steering assist feeling by the Emergency Lane Keeping may be stronger than expected while driving at 37 mph 60 km/h) (or faster. 2.The Smart Brake Support may operate unexpectedly when parking in reverse under certain conditions, mainly while driving at 1.2 mph ( 2 km/h) to 9.3 mph (15 km/h) on…
• 10249504Jan 30, 2024Other or unknown, Visibility (wipers, defrost, mirrors), Electrical system. 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. Alternatively, after the passenger-side door mirror tilts down in response to reversing, it does not return to its original position even when the reverse is disengaged.
• 10249496Jan 30, 2024Suspension. Some customers may complain about squeaking noise coming from the rear of vehicle when driving on bumpy roads and turning. This is caused when the lubricant coating comes out of the bump stopper, changing the resistance between the damper rod and bump stopper. To eliminate this concern, rubber grease is being added inside the bump stoppers during the production process.
• 10249549Jan 24, 2024Steering. When placing an order for KJK8-32-110A as a service part replacement such as a collision repair, standard “over-the-counter” order, etc. The supplemental part K1Y0-32-FX8A (spring kit) must be replaced when installing the steering gear KJK8-32-110A.
• 10249548Jan 19, 2024Engine cooling. Click here to view coolant bleeding procedure.
• 10249547Jan 18, 2024Equipment, Visibility (wipers, defrost, mirrors). 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.
• 10249546Jan 10, 2024Transmission and drivetrain. Due to a manufacturing change, the CX-90 transmission has undergone a transmission part design change when replacing the transmission assembly. Old design originally required a coolant line running to the top of the bell housing, the new design has omitted the hole and need for the coolant line. The new/superseded design can be used in place of the old/original design and the coolant hose is no longer needed to be…
• 10249499Jan 10, 2024Other or unknown, Equipment, Electrical system. 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.
• 10249498Jan 10, 2024Equipment, Electrical system. 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…
• 10249544Jan 9, 2024Transmission and drivetrain. Due to a manufacturing change, the CX-90 transmission has undergone a transmission part design change when replacing the transmission assembly. The new/superseded design can be used in place of the old/original design as the coolant hose (D-Code 21-5LX) is no longer needed to be used.
• 10249493Jan 2, 2024Brakes. Some vehicles may exhibit check engine light turns on with DTC P0504:00 [PCM] (Brake switch circuit problem) stored in memory. This may be caused by the PCM incorrectly reading the brake switch input. To eliminate this concern, the control software of the PCM has been modified.
• 10248297Dec 27, 2023Engine cooling. SSPD4- 2024 CX-90 (MHEV) - OBD II Water Temp Sensor Detection Concern: The second water temperature sensor circuit failure may not be diagnosed correctly and also the execution rate of the evaporative monitor in the field may not be calculated correctly. The repair will be reprogramming the PCM with the modified software with MMDS, using MDARS. There are 9,991 vehicles in the campaign.
• 10248296Dec 27, 2023Visibility (wipers, defrost, mirrors), Other or unknown, Engine cooling. SSPD3- 2024 CX-90 (PHEV) - OBD II AC Refrigerant Pressure Detection Concern: On certain CX-90 vehicles, air conditioner refrigerant pressure malfunction may not be judged correctly due to inappropriate failure judgement program of PCM. The repair will be reprogramming the PCM and ECU with the modified software with MMDS, using MDARS. There are 6,089 vehicles in the campaign.
• 10248295Dec 27, 2023Transmission and drivetrain. SSPD2 - 2024 CX-90 (All) - OBD II Transmission Solenoid Detection Concern: On certain CX-90 vehicles, the judgement of solenoid electrical failure may not be made correctly due to inappropriate control program of TCM. The correct judgement cannot be made and even if the solenoid is returned to the normal condition after the electrical failure is judged. The repair will be reprogramming the TCM with the modified…
• 10248294Dec 27, 2023Equipment, Brakes. SSPD1 - 2024 CX-90 (All) - Side Radar Smart Brake Concern: On certain CX-90 vehicles, while driving near any objects with high reflection intensity (such as guardrail, oncoming vehicle etc.), the Front Cross Traffic Alert (FCTA) may often operate falsely, and in rare cases, the Smart Braking System (SBS) may unintendedly activate if certain conditions are met, causing an unexpected warning. The repair will be…
• 10248286Dec 22, 2023Electrical system, Other or unknown. 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.
• 10248285Dec 22, 2023Latches, locks and linkages. Some customers may experience an issue where the hood cannot be opened using the release cable. To open the hood for diagnosis and repairs, follow the repair procedure below.
• 10248347Dec 20, 2023Visibility (wipers, defrost, mirrors). Some vehicles may exibit the BSM indicator light on the outer mirror glass delayed while driving at low speeds. This is caused by improper control logic of the side radar sensors where detection delay may occur in a specific driving environment. To eliminate this concern, the control software of the side radar sensors has been modified.
• 10248343Dec 20, 2023Engine cooling, Transmission and drivetrain. Some vehicles may experience differential oil leaking from the oil seal (RH side) at the front differential. This is caused by an inappropriate assembly process of the front differential to the oil pan (vehicle side). To eliminate this concern the front differential assembly process has been changed.

← All problems reported for the 2024 Mazda CX-90