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Service bulletins for the 2018 Mazda CX-9

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.

470 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
MT-004-182018-04-23. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. If you encounter any type of electrical concern (e.g, dead battery), interview the customer before proceeding with normal Workshop Manual diagnosis. Aftermarket devices may be the cause of the electrical concern. Ask the customer if any aftermarket devices have been installed. Below are a couple of examples of unusual electrical concerns caused by aftermarket devices.
01-009-18-34522018-04-23. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. The Mazda GR8-1291 is required for all warranty battery testing. If the Mazda GR8-1291 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.
01-008-18-34512018-04-23. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This service bulletin provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the battery periodically according to the repair procedure.
MT-002-182018-04-23. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain about improper operation of the MAZDA CONNECT system when streaming music with audio source aha/Pandora/Stitcher/Bluetooth® and the same device is also connected to the USB port for charging. The concerns may include: Blank Screen and/or No Audio Sound, Phone will not charge, Blank Screen and/or No Audio Sound
09-010-18-34402018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 59.00.504 or later). NOTE: For 2016 CX-9 with version earlier than 59.00.441, the tachometer function will be removed from the Active Driving Display as part of Mazda's continuing efforts to improve safety and reduce driver distraction. Please explain this to the customer before updating the software. If the customer agrees, turn off the tachometer display on the AD-Display tab in MAZDA CONNECT Settings before performing the update. NOTE: If the customer has customized MAZDA CONNECT with something like a different background using unauthorized software, make sure they know the following information before updating MAZDA CONNECT to avoid any issues later on.
01-001-18-34192018-03-05. Service bulletin. ELECTRICAL SYSTEM. After parking the vehicle at temperatures below the freezing, some customers may experience a lack of power with the check engine light on and DTC P0638:00 and/or P2112:00 stored in memory. - P0638:00: Throttle valve actuator control range/performance problem (one drive cycle DTC) - P2112:00: Throttle valve actuator motor currentrange/performance problem (one drive cycle DTC) This concern may be caused by condensed water in the intake manifold entering the throttle valve. After parking at temperatures below freezing, the throttle valve may be frozen at the stand-by position, resulting in the symptom. To prevent this concern, the control logic of the PCM has been modified to avoid frozen the throttle valve (by moving the valve at a certain time after the ignition has been turned off). NOTE: With this modification, the main relay may stay on up to 90 minutes after the ignition switch is turned off. "BATTERY INSPECTION" in the Workshop Manual will be modified to properly check the battery parasitic draw after this modification.
09-003-18-3405a2018-03-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Some customers may complain that the Voice Recognition system does not recognize "Address" or "New Destination" navigation voice commands. This may be caused by faulty navigation SD card software. The SD card has been updated to eliminate this concern.
09-003-18-34052018-03-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Some customers may complain that the Voice Recognition system does not recognize "Address" or "NewDestination" navigation voice commands. This may be caused by faulty navigation SD card software. TheSD card has been updated to eliminate this concern.
09-002-18-34102018-03-05. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. After the installation of a new instrument cluster, the message "Fctry" or "Factory" is displayed instead ofthe odometer. This concern may also occur when a room fuse is installed in a new vehicle.Some new instrument clusters are in the factory mode setting. Factory mode cancellation is required.NOTE: The concern is applicable to Calsonic Kansei instrument clusters. Not all trim levels are affected.CX-3 shown:Vehicles having this concern should have their vehicle repaired using the following procedure.
MT-001-182018-02-26. Service bulletin. ELECTRICAL SYSTEM. When installing a navigation SD card, the center display may show error message "Invalid SD Card". This may be caused by: The navigation SD card lock tab is locked.The navigation SD card has a VIN mismatch due to SD card swapping.The navigation SD card has a malfunction.
SA-074-172018-02-26. Service bulletin. ELECTRICAL SYSTEM. If the BSM control module is replaced, Auto Configuration and BSM Radar Test must be performed: 1. Auto Configuration -When the ignition is switched ON, the blind spot monitoring (BSM) reads the vehicle specification information sent via CAN communication from the instrument cluster, and stores the vehicle specification information into the new BSM control module. 2. BSM Radar Test - This test confirms correct BSM module/bracket alignment. The Workshop Manual "BLIND SPOT MONITORING (BSM) RADAR TEST" is incorrect. Mazda is in the process of correcting the error. Perform the following procedure temporarily until the Workshop Manual is corrected:
SA-067-172017-10-12. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:WIRING; VISIBILITY:REARVIEW MIRRORS/DEVICES:INTERIOR. Due to a change in the 2017 Mazda3, Mazda6 and 2018 CX-9 A-pillar wiring harness, the EC Mirror w/compass / EC Mirror w/compass + Homelink installation instructions have been updated.
09-035-17-30802017-10-04. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer. NOTE: Tampering with a motor vehicle odometer is strictly prohibited by Federal, and State laws. It is the dealer?s responsibility to comply with Federal, State, and local laws concerning odometerand related documentation requirements when providing a repair or replacement. Mazda vehicles are manufactured with tamper-proof speedometers. When a speedometer is replaced, the new speedometer will read zero (0) miles. This procedure is extremely important to accurately represent actual vehicle mileage. Prior to speedometer removal, complete the information required on the ?SpeedometerReplacement Label?.Labels can only be ordered through Mazda eStore. In an effort to achieve a higher level of Customer Experience and retain the value of Mazda?s vehicles, MNAO Warranty Operations is allowing all Mazda dealers to utilize a third party, SPECMO Enterprises, Inc., for Instrument Panel Cluster (IPC) odometer setting service.With the use of SPECMO?s services, a Mazda dealer can get the odometer setting updated to reflect the correct mileage at the time of replacement for both warranty and customer pay repairs, therefore resulting in a higher level of customer satisfaction. Since odometer setting service is not part of the warranty repair, it is not warrantable nor required, but optional. However, Mazda Warranty policy provides after- warranty assistance (AWA) or DSA that can be utilized to cover this service expense.
SA-061-172017-08-10. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. In an effort to achieve a higher level of Customer Experience and retain the value of Mazda's vehicles, MNAO Warranty Operations is© 2017 Mazda North American Operations, U.S.A. allowing all Mazda dealers to utilize a third party, SPECMO Enterprises, Inc., for Instrument Panel Cluster (IPC) odometer setting service. With the use of SPECMO's services, a Mazda dealer can get the odometer setting updated to reflect the correct mileage at the time of replacement for both warranty and customer pay repairs, therefore resulting in a higher level of customer satisfaction. Since odometer setting service is not part of the warranty repair, it is not warrantable nor required, but optional. However, Mazda Warranty policy provides after- warranty assistance (AWA) or DSA that can be utilized to cover this service expense.

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