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Service bulletins for the 2018 Mazda CX-3

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.

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

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By component

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Bulletins, newest first
SA-029-182018-08-20. Service bulletin. ENGINE AND ENGINE COOLING. IMPORTANT: If you encounter an IDS inoperative problem with VCM-II license expiration message, follow the instructions below: 1. CLICK HERE to download the resetting tool to your PC desktop. 2. Reboot your PC, DO NOT start any application after restarting. 3. Run the resetting tool by double clicking the "Reset.bat" file (on your desktop from step 1). 4. Press any key after reading the notifications about the resetting tool.
SA-027-182018-07-02. Service bulletin. AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION; SEAT BELTS:FRONT:WARNING LIGHT/DEVICES. Some customers may complain that the passenger seat belt warning light is ON and the PASS AIRBAG OFF indicator light is OFF with no front passenger in the seat. This may be caused by an electrical device (smart phone, tablet, laptop. etc.) placed on the front passenger's seat.
SA-026-182018-07-02. Service bulletin. ENGINE. If a vehicle is driven on extremely short trips most of the time (where the engine never reaches normal operating temperature), the engine oil may become diluted with fuel and the engine oil level will increase. Engine oil dilution with fuel occurring under this specific driving condition is normal with direct injection engines. If the vehicle is driven on a longer trip after a lot of short trips (where the engine reaches normal operating temperature), the Check Engine Light may turn ON with DTC P0172:00 (Fuel system too rich).
SA-024-182018-07-02. Service bulletin. STRUCTURE:BODY:HOOD. Some customers may complain of a lack of power under heavy load without any warning lights or DTCs. This concern may be due to a loose or detached hood weatherstrip, which can cause a blockage or restriction in the air intake system.
SA-023-182018-07-02. Service bulletin. LANE DEPARTURE: WARNING; EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH. Some vehicles may have DTC C1001:92 stored in memory. DTC C1001:92 sets as a past record for low visibility of the Forward Sensing Camera (FSC). It does not mean there is an actual FSC defect. In some cases the customer may have a concern with the Lane Departure Warning System (LDWS) and/or High Beam Control system (HBC). In other cases this DTC might be found without a related customer concern.NOTE: Instrument Cluster Multi-Information Display Warning Messages vary depending on vehicle year/model. See the Owner's Manual for details.
09-025-18-34792018-07-02. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Mazda infotainment systems require contacting the proper source for diagnostic support, parts authorization, and parts exchange. Some components require prior authorization before ordering as exchange. Refer to DAG Exchange Central (MXConnect>Parts and Accessories>Parts>Programs>Exchange Central) for component availability, source of technical support and prior authorization requirement. NOTE: Always check for a TSB that may modify or eliminate prior authorization for a specific symptom for a given component.
09-023-18-34752018-07-02. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. When replacing the SiriusXM satellite radio unit (or a MAZDA CONNECT tuner and amp unit (TAU)) with replacement tuner for any reason, a call must be made to inform SiriusXM of the existing Radio ID and the new/replacement SAT Radio ID as soon as possible to ensure the customer leaves the dealership with active (working SAT radio).
09-022-18-34712018-07-02. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. On some vehicles, one or more roof carrier brackets (A) may be installed in reverse (with arrows (B) facing outward). In this case, accessories, such as a roof carrier cannot be installed. Even if the accessory installation was possible, it may cause loose fitting, water leaks or other concerns.
02-011-18-34762018-07-02. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. This service bulletin illustrates the conditions when a TPMS warning light may illuminate, why it illuminated and how to properly initialize the system.The Tire Pressure Monitoring System (TPMS) monitors the tire pressure of all four tires indirectly using the data sent from the ABS wheel speed sensors. If the air pressure of one or more tires is too low compared with the specified value (the initial value learned by the system), the system warns the driver with the TPMS warning light in the instrument cluster and a beep sound. To allow the TPMS to operate correctly, it is essential that the TPMS be initialized to learn new conditions whenever a tire related service is performed.
02-010-18-34772018-07-02. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR. Some customers may complain that the steering wheel is off center more than 3° even when driving straight on a flat road.
02-009-18-34722018-07-02. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. Customer complaints have been reported where the TPMS warning light is unnecessarily illuminated because the TPMS initialization was not performed correctly before customer delivery.TPMS INITIALIZATION PROCESS: When any of the services below is performed, BE SURE TO INITIALIZE THE TPMS BEFORE DRIVING THE VEHICLE by pushing and holding the TPMS Set Switch on the dash until the TPMS warning light flashes two times and the warning beep sounds once. The TPMS must be initialized in the following cases: 1. Tire pressures have been adjusted in one or more tires. 2. Tires have been rotated. 3. Tires or wheels have been replaced. 4. The vehicle's battery cable has been disconnected for any reason. 5. The vehicle's battery has been discharged. 6. The DSC HU/CM connector has been disconnected for any reason.
01-013-18-34782018-07-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Some vehicles may exhibit the check engine light on with DTC P0456 stored in the PCM memory. P0456: EVAP system leak detected (very small leak)The concern is most likely the result of the customer not getting the fuel cap completely closed after fuelingthe vehicle. This causes a small fuel vapor leak and turns DTC P0456 on.
01-012-18-34742018-07-02. Service bulletin. ENGINE. Some vehicles may experience the CHECK ENGINE LIGHT ON with DTC P2610 and P2507 stored inmemory after engine start and room fuse 15A (A) removed. P2610:00: Instrument cluster internal engine off timer performance problem P2507:00: PCM battery voltage low input. As a past malfunction, the customer will not notice it (no warning light illuminated), but the DTC may be found during a vehicle service. P2507 in this situation is only applicable on 2016 and later models. This is caused by the engine being started 3 or more times after a short duration of engine off (less than 15 seconds) with the room fused removed. NOTE: The odometer will display "F0-002" during transport mode (room fuse 15A removed). Transport mode is canceled when room fuse 15A is installed or the vehicle odometer is more than 12.4mi (20km). Vehicles in dealer inventory with this concern should be repaired using the following repair procedure.
00-003-18-34802018-07-02. Service bulletin. SERVICE BRAKES. Mazda North American Operations has approved an additional on-car brake lathe as an option for MNAOauthorized equipment. The Pro-Cut On-Car Brake Lathe has been added to the MNAO authorizedequipment program.NOTE: Accu-turn is still an approved brake lathe, but it is no longer available for purchase from our vendor. IMPORTANT: Rotors must be machined using a Mazda approved on-car brake lathe, or warranty claimsare subject to denial or debit.
09-021-18-34592018-05-14. Service bulletin. STRUCTURE:BODY:TRUNK LID; STRUCTURE:BODY:ROOF AND PILLARS; STRUCTURE:BODY:HOOD. Some vehicles may experience stains appearing on the hood, roof and/or trunk of the vehicle. This concern is most likely to be found in a cold weather areas just after the RAPGARD is removed at PDI. This may be caused by moisture which has been trapped and condensed between the paint and the RAPGARD. These types of stains can be removed with a heat gun or an infrared drier. If you encounter this concern during PDI, use a heat gun or an infrared drier to apply heat to the affected area to remove the stain(s).
09-020-18-34582018-05-14. Service bulletin. EQUIPMENT:ELECTRICAL. Some vehicles may exhibit BLUETOOTH® hands-free and/or text messaging related concerns. To improve the handling of BLUETOOTH® hands-free and/or text messaging customer concerns, Mazda created a special service and parts exchange program as of February 2010. Customers experiencing related concerns should have their vehicle and/or device inspected according to the following procedure.
08-001-18-34572018-05-14. Service bulletin. AIR BAGS. This information is provided to help address Passenger Airbag Deactivation (PAD) Indicator illumination concerns during vehicle service.
05-004-18-34662018-05-14. Service bulletin. ENGINE AND ENGINE COOLING. Some vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738). P0842:00 - Oil pressure switch No. 1 (oil pressure switch B) stuck on P0847:00 - Oil pressure switch No. 2 (oil pressure switch A) stuck on P0872:00 - Oil pressure switch No. 3 (oil pressure switch A) stuck on P0877:00 - Oil pressure switch No. 4 (oil pressure switch B) stuck on P0780:00 - Gear shifting malfunction P1738:00 Automatic transaxle internal malfunction This is caused by the oil pressure switch A and/or B at the control valve body temporarily or permanently getting stuck due to contamination entering the passage. To correct the problem, some mass production changes have been implemented to reduce contamination and improve the DTC diagnostic logic. NOTE: If the vehicle also has a delayed engagement concern, this TSB is not applicable. Refer to MGSS online for proper diagnosis and repair procedure.
05-003-18-34602018-05-14. Service bulletin. POWER TRAIN. Some customers who drive at elevations higher than 3,300 ft (1,000 m) may complain of a shift shock felt when shifting into 3rd, 5th and/or Reverse with no AT related DTCs stored. The symptom can be temporarily repaired using the AT initial learning procedure, but may recur after multiple driving cycles. Applicable situations: Shifting up: 2-3 or 4-5 Shifting down: 4-3 or 6-5 NOTE: Shifting from 2-3 or 4-3 is more likely to be felt due to the gear ratio. Shifting into Reverse: D-R, N-R or P-R Improper control logic of the TCM may cause improper learning of R-3-5 brake engaging speed when the vehicle is driven at high elevations. To correct this issue, the control logic of the TCM has been modified.
05-002-18-34542018-05-14. Service bulletin. POWER TRAIN. The new SKYACTIV-DRIVE FW6A-EL AT uses "Automatic Transmission Fluid (ATF) Type: FZ". Only use"ATF-FZ" to fill or top off the fluid level. ATF-FZ is specially designed for use in the SKYACTIV-DRIVE series AT. It is a low viscosity formula with less friction for better fuel economy. NOTE: ATF-FZ is colored blue for easy identification.
04-004-18-34682018-05-14. Service bulletin. SERVICE BRAKES. 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.
04-003-18-34552018-05-14. Service bulletin. ENGINE AND ENGINE COOLING. Some customers may report a slight clunk/bang/buzz noise or jolt from the front of the vehicle. This concern will most likely occur during the vehicles first forward movement after starting the engine. This is a normal operating noise of the Anti-Lock Brake System (ABS). Do not attempt any repairs. If you encounter a customer complaint for this concern, explain that the noise comes from the ABS/TCS/DSC "Malfunction Detection Function" initial check and that there is no problem. This initial check is a necessary function to ensure the normal operation of the ABS/TCS/DSC system. It occurs when the vehicles first moves forward under the following conditions. NOTE: Some customers may describe that the noise does not occur all the time. It does occur all the time, but the sound is more likely to be heard on a slow start and not on a quick start (quick acceleration) when engine noise is louder.
02-008-18-34672018-05-14. Service bulletin. WHEELS. Some automotive cleaning products contain strong acid or alkali. When these types of cleaners are used to clean the wheels on Mazda vehicles, the chemicals contents penetrate the clear coating of the wheel surface and damage the paint under the clear coating. The damaged area has the appearance of dark stains.
01-011-18-34562018-05-14. Service bulletin. EQUIPMENT. The vehicles listed above are equipped with a push button start/stop ignition system. Unlike previous Mazdamodels, there is no key cylinder on the steering column. Therefore, the engine cannot be started with theauxiliary key if the room fuse is removed or if the transmitter battery is dead.NOTE: The auxiliary key can only be used to lock or unlock the doors. It cannot be used to start the engine. Two transmitters are placed in a vinyl bag and stored in the center console cup holder. Since the room fuse is not installed during vehicle assembly, a new procedure is required to start the engine. Refer to "Engine Start Procedure" below.
SA-021-182018-05-14. Service bulletin. ELECTRICAL SYSTEM. MAZDA CONNECT SOFTWARE VERSION 59.00.545 AVAILABLE. An update to the MAZDA CONNECT system is now available for download from the Mazda Global Service Support (MGSS) system. The new version number is 59.00.545. Mazda Requests the MAZDA CONNECT system be updated on all new vehicle inventory and CPO vehicles ASAP. For CPO inventory vehicles out of warranty, for this software release only, you may use Dealer Self Authorization or DSM goodwill. Click on "Infotainment", then "MAZDA CONNECT Updates" to download it and update your USB drives. Also make sure to select "All Files" for "Save as type:". If left as "Compressed (zipped) Folder," the file will be saved as a ".zip" no matter what you use as an extension. DO NOT shut off the ignition or let it shut off at any time during the entire MAZDA CONNECT update process (both Failsafe and Reinstall), otherwise the CMU may be damaged and need to be replaced.

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