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Service bulletins for the 2019 Mazda Mazda3

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
SA-035-242024-06-04. Other. ENGINE. There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole. This Service Alert is to inform you about the water pump sealing mechanism and the criteria if replacement is necessary or not.
07-003-24a2024-06-04. Service bulletin. UNKNOWN OR OTHER. Some customers may complain that the ambient temperature on the instrument cluster is displayed more than 50 °F (10 °C) lower than the actual temperature, resulting in insufficient performance of the air conditioning. This is caused by inappropriate soldering in the ambient temperature sensor. To eliminate this concern, the soldering process has been enhanced at the supplier.
SA-021-24a2024-06-03. Other. UNKNOWN OR OTHER; STRUCTURE:BODY. Some customers may complain about intermittent audio no sound from the MAZDA CONNECT infotainment system and/or static noise from the speakers. The concern may be reproduced by tapping on the dash pad near the MAZDA CONNECT center display and the following DTC's may be stored. U0186:08 Communication error with audio amplifier U2145:08 Communication error with remote tuner (RT) U2145:02 Communication error with remote tuner (RT)
09-027-242024-06-03. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. Some customers may experience that after the doors are locked and the Fuel Door Lock Delay with MAZDA CONNECT has passed (default setting is 90 seconds), the fuel-filler lid does not lock, but can be opened when pressed. NOTE: The fuel-filler lid does not lock immediately after the doors are locked, but after the time set in the Fuel Door Lock Delay (0, 30, 60, 90, and 120 seconds). Although the root cause has not been identified, the vehicle should be repaired by adjusting the fuel-filler lid opener cable position when there is a customer complaint.
01-003-242024-05-24. Service bulletin. ENGINE. Some vehicles may have the check engine light on with DTC P0524:00 or P055F:00 stored in memory. Contamination in the engine oil may cause the engine oil solenoid valve to become stuck, resulting in improper operation of the oil pump and improper oil pressure.
SA-022-242024-05-04. 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 or discoloration.
SA-017-24a2024-05-04. Service bulletin. EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING; LATCHES/LOCKS/LINKAGES. 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
07-003-242024-05-04. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some customers may complain that the ambient temperature on the instrument cluster is displayed more than 50 °F (10 °C) lower than the actual temperature, resulting in insufficient performance of the air conditioning. This is caused by inappropriate soldering in the ambient temperature sensor. To eliminate this concern, the soldering process has been enhanced at the supplier.
SA-007-24a2024-05-04. Service bulletin. SERVICE BRAKES, HYDRAULIC; FORWARD COLLISION AVOIDANCE; EQUIPMENT ADAPTIVE/MOBILITY. This information will give you the necessary knowledge to respond to customers concerns of Smart Brake Support (SBS) unintended braking. By educating the customer on the system operation, it should reduce their anxiety or distrust of the vehicle.
09-023-242024-05-04. Service bulletin. ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES. Some customers may experience one or both of the following symptoms while locking and unlocking the doors works fine using the remote transmitter. Symptom 1: The touch sensor of the front door outer handle does not lock the doors after rain and/or car washing, even though unlocking is possible. Symptom 2: The touch sensor of the front door outer handle does not unlock the doors.
SA-026-242024-05-03. Service bulletin. AIR BAGS. A customer may complain of a rattle noise from the right side of the dash. The noise may be coming from the passenger side airbag.
SA-023-242024-05-03. Service bulletin. STRUCTURE:BODY:HOOD. The customer may report a rattling noise from the front of the vehicle under load. It may sound as if it is coming from the dashboard, but it is coming from the hood prop rod (aka lock-bonnet stay). The prop rod diameter was increased in November 2022 production, but in some circumstances, the noise may still be encountered in vehicles after this production range. Follow the repair information below to confirm the noise and how to eliminate it.
SA-021-242024-05-03. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT. Some customers may complain about intermittent audio no sound from the MAZDA CONNECT infotainment system and/or static noise from the speakers. The concern may be reproduced by tapping on the dash pad near the MAZDA CONNECT center display and the following DTC's may be stored. U0186:08 Communication error with audio amplifier U2145:08 Communication error with remote tuner (RT) U2145:02 Communication error with remote tuner (RT)
SA-017-242024-04-03. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. 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
SA-016-242024-04-03. Service bulletin. SERVICE BRAKES, HYDRAULIC. 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.
PF-24-032024-04-03. Service bulletin. POWER TRAIN. 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.
09-020-242024-04-03. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Some customers may experience that, with a specific operation, the touch sensor of front door outer handle does not lock and unlock the doors but the remote transmitter operates correctly. Description of the specific operations: Specific Operation 1 [MX-30]: After using cabin preconditioning or hazard warning lights for approx.15 minutes. Specific Operation 2 [MAZDA3 and CX-30]: After using hazard warning lights for approx. 15 minutes. Specific Operation 3 [MAZDA3, CX-30 and MX-30]: When both touch sensors are touched at once. Specific Operation 1 and 2 Cause: The touch sensor has been disabled to avoid the unintended locking/unlocking operation caused by rain. Specific Operation 3 Cause: The control logic is not appropriate. NOTE: If the concern occurs without the specific operation above, refer to TSB 09-019/22 (DOOR OUTER HANDLE TOUCH SENSOR DOES NOT LOCK AND/OR UNLOCK). To correct this issue, the control software of the LF control unit (LFU) has been modified.
04-001-242024-04-03. Service bulletin. SERVICE BRAKES, HYDRAULIC. Symptom 1: Some customers may complain about hearing a grinding noise and/or vibration occur when applying the brake. This is due to rust on the rear brake disc plate. Symptom 2: Some vehicles may exhibit a squeal noise from the rear brakes when braking lightly while driving at a slow speed. The squeal noise is caused by the disk pad surface fluctuating.
SA-009-24a2024-03-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. 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, Service Issues, Resources, Troubleshooting Page.
SA-009-242024-03-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. 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, Service Issues, Resources, Troubleshooting Page.
SA-011-242024-03-06. Service bulletin. STEERING; SERVICE BRAKES, HYDRAULIC; WHEELS; TIRES; ENGINE AND ENGINE COOLING; POWER TRAIN. 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.
SA-006-242024-03-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
SA-007-242024-03-06. Service bulletin. SERVICE BRAKES, HYDRAULIC. 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. SSPC5 - 2019-2021 MAZDA3 AND 2020-2021 CX-30 - CONTROL UNITS REPROGRAMMING 4219L - 2019MY MAZDA3 SUDDEN DECELERATION FROM FALSE BRAKE ACTIVATION 2024 CX-90 with VINS lower than JM2KK******151673 (produced before November 25, 2023), VCM software update available using TSB 15-001/24. DESCRIPTION This information will give you the necessary knowledge to respond to customers concerns of Smart Brake Support (SBS) unintended braking. By educating the customer on the system operation, it should reduce their anxiety or distrust of the vehicle. IMPORTANT: Humans recognize an object with their eyes and decide whether or not to apply the brakes using their brain. The vehicle recognizes objects using the Forward Sensing Camera (FSC) and Front Radar sensor (FR), to determine brake application. Therefore, drivers may feel that the operation does not match the human feeling.
01-005-23a2024-01-06. Service bulletin. ENGINE AND ENGINE COOLING. Some customers may experience the check engine light ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: The engine takes longer to warm up The engine temperature gauge fluctuates The low coolant temperature indicator (blue) light stays on longer or comes on while driving Poor heater performance, especially at idle
SA-081-232024-01-06. Service bulletin. ENGINE AND ENGINE COOLING. There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole. This Service Alert is to inform you about the water pump sealing mechanism and the criteria if replacement is necessary or not.

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