Service bulletins for the 2021 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.
634 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| SA-002/22 | 2022-02-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Some vehicles may have a "Low Battery Risk. Start Vehicle to Charge 12V Battery" warning message in the instrument cluster and a 30 second alarm sound. This is caused by the vehicle's electrical control area network (CAN) entering "Sleep Mode" when the network awake time reaches 30 cumulative minutes without the engine running. The vehicle network starts to wake-up at the moment any side door is opened in order to increase the start-up speed of electrical components and the network awake cumulative time count begins by the customer doing any one of the following wake-up triggers: Open any door(s), Unlock doors, Open liftgate, Depress brake pedal, Push start/stop button, Other operations that wake-up the network. No dealer visit is required. The warning message can be cleared by starting the engine and idling or driving for 5 minutes or longer. |
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| SA-027-21c | 2022-01-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Mazda Connect Symptom Troubleshooting (7th Generation Vehicles): Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure. No. 1 Blank Screen No. 2. Rear View Camera is not displayed No. 3 Rebooting No. 4 Infotainment System Has No Sound No. 5 Commander Switch Does Not Work No. 6 Bluetooth device will not pair No. 7 Incorrect GPS position No. 8 Voice Recognition Does Not Work No. 9 Cannot Make a Hands-Free Call No. 10 Cannot Play Bluetooth Audio No. 11 How to update the Navigation SD Card Map No. 12 How to Check Navi SD Card VIN Lock |
| SA-013-21h | 2022-01-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT; ELECTRICAL SYSTEM. Connected Vehicle Symptom Troubleshooting: Some customers may complain about any of the following: - Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle enrollment. - Remote function(s) inoperative. o Engine Start / Stop o Door Lock / Unlock o Lights ON / OFF MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Confirm the customer's phone and vehicle have good to strong reception during the concern as shown in the table below. - If the reception is weak, move the vehicle to a location where the reception is good to strong as shown in the table, then try to get the Authorization Code and/or operate the remote functions before proceeding to the Repair Procedure if there is still an issue. - If the reception is good to strong, proceed to the Repair Procedure. |
| 16-002-21-3858 | 2022-01-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Audio, Navigation, And Phone Concerns With Mazda Connect Infotainment System (7th Generation Models): Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA01_11012 or later). --> See document for full list. Customers having this concern(s) should have their vehicle repaired using the following repair procedure. |
| 09-039-21-3807 | 2022-01-06. Service bulletin. STRUCTURE; EQUIPMENT; ELECTRICAL SYSTEM. Door Outer Handle Touch Sensor Does Not Lock And/Or Unlock: 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. Cause 1 (for Symptom 1): Water may accumulate around the touch sensor in the outer handle, resulting in temporary lower sensitivity of the capacitive sensor. Also, if car wash foam gets inside the outer handle while washing the vehicle, the foam may disturb the touch sensor detection. Mazda is still working on a mass production change for this concern. Cause 2 (for Symptom 2): Improper soldering in the production process may disturb the touch sensor detection. To eliminate this concern, the production process has been modified. Customers having this concern should have their vehicle repaired using the following repair procedure. |
| 09-038-21-3855 | 2022-01-06. Service bulletin. STRUCTURE. Rear Outer Door Handle Fails To Return Due To Water Freezing In The Handle: Some vehicles may exhibit the rear outer handle remains pulled out and does not return when the rear outer handle is operated in freezing temperatures. This is caused by the accumulation of snow on the rear outer handle melting and dripping water on the sliding part of the lever. When the water freezes due to decreased temperature and the handle is operated, peeled ice gets caught between the outer handle case and the slide, causing the return failure. To eliminate this concern, the shape of the rear outer handle has been changed to prevent the accumulation of water on the sliding part of the lever. Customers having this concern should have their vehicle repaired using the following repair procedure. |
| 09-019-21-3813a | 2022-01-06. Service bulletin. FUEL/PROPULSION SYSTEM; STRUCTURE; EQUIPMENT. Fuel Filler Lid Panel Is Deformed: Some vehicles may exhibit a deformed fuel-filler lid panel (1) attached to the fuel-filler lid box, resulting in a poor appearance. This concern is caused by the lid box not having enough water drainage capability which leads to the accumulation of water inside it. The water then freezes in cold weather and expands or the inner side of the lid panel absorbs the water and swells from long exposure, deforming the lid panel. To eliminate this concern, the shape of the fuel-filler lid box has been modified to have better drainage capability and a modified fuel-filler lid panel service part has been established for less water absorbance. Customers having this concern should have their vehicle repaired using the following repair procedure. |
| 09-012-21-3801b | 2022-01-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Door Lock Will Not Work Using Remote Transmitter and Engine Will Not Start: Some customers may experience all of following symptoms: 1. The door lock/unlock operation will not work using the remote transmitter button. 2. The door lock/unlock operation will not work using the door lock/release touch sensor. 3. The engine will not start using the ignition switch. 4. The transmitter operates by itself. 5. The key battery drains faster than usual. Symptoms 1-3: This may be caused when excess load is applied to the remote transmitter, deforming the electrical terminals and creating poor contact with the battery. To eliminate this concern, the structure in the remote transmitter has been modified to reduce the deformation of the electrical terminals. Symptom 4-5: This may be caused when excessive load is applied to the remote transmitter, creating a gap around the gasket where moisture enters and corrodes the circuit board which in turn drains the key battery faster than usual. To eliminate this concern, the thickness of the case wall on the gasket mounting surface has been increased and the bonding strength of the components has been improved to prevent deformation. Customers having this concern should have their vehicle repaired using the following repair procedure. |
| 01-006-21-3779b | 2022-01-06. Service bulletin. ELECTRICAL SYSTEM. Battery Maintenance: 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. |
| SA-031-21c | 2022-01-05. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. New Cylinder Head Assembly Established: A new cylinder head assembly for service parts has been newly established for SKYACTIV-G 2.5 with cylinder deactivation when replacement is needed. Valves, valve springs, valve spring seats, and cotters (IN/EX) are included in the new assembly. |
| SA-054-21a | 2021-12-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT. Some customers may complain about any the following infotainment system concerns: Reboot, Slow reboot in morning, Display frozen, Display blank. NOTE: Rear view monitor operation is normal, No DTC stored |
| SA-054-21 | 2021-12-02. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Some customers may complain about any the following infotainment system concerns: Reboot, Slow reboot in morning, Display frozen, Display blank. NOTE: Rear view monitor operation is normal, No DTC stored |
| SA-055-21 | 2021-12-02. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Due to a supplier issue, DTC C0061:94 is displayed instead of C0061:96 for Mazda3 and CX-30. Therefore, use the C0061:96 diagnostics on MGSS when DTC C0061:94 is stored. |
| SA-052-21 | 2021-12-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. For improvement of electrical diagnosis, the SKYACTIV® Wiring Terminal Test Kits has been delivered all the dealers. The terminal test kit enables you: To check pin fit drag of all PCM terminals used in SKYACTIV® vehicles and compare suspect terminal drag with a good know terminal.To measure the voltage/resistance avoiding any terminal damage. |
| 01-012-21-3832a | 2021-12-02. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Some vehicles may have a “LOW ENGINE OIL LEVEL” warning message and a CHECK ENGINE light illuminated in the instrument cluster, along with DTC P250F:00 stored in memory. DTC P250F:00 - Engine oil level signal: engine oil level low. Upon inspecting the engine oil level, the level is found to be low and there doesn’t appear to be any trace of oil leakage in the engine compartment. This concern usually occurs when the mileage reaches approximately 3,100 – 4,700 miles (5,000 - 7,500km) and may also occur again after replacing or topping off the engine oil. The root cause of this concern has not been identified yet, therefore a repair procedure will be announced at a later date. Since this issue has been reported after a valve stem seal modification, it is very likely that valve stem seal damage is causing oil to leak into the combustion chamber. |
| SA-012-21g | 2021-11-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. MAZDA CONNECTED SERVICES - FREQUENTLY ASKED QUESTIONS (FAQ): Index: General Questions, Setup and Getting Started, Registration / Enrollment, WI-FI General Information, WI-FI How-To, WI-FI Trial Period, Interacting With The App, Service Issues, Troubleshooting, Reception Level Inspection, Dealer Processes, Conditions for Remote Engine Start Will Not Function, Conditions for Remote Engine Start Function Will turn engine OFF, Educational Videos, Resources |
| SA-031-21c | 2021-11-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. A new cylinder head assembly for service parts has been newly established for SKYACTIV-G 2.5 with cylinder deactivation when replacement is needed. Valves, valve springs, valve spring seats, and cotters (IN/EX) are included in the new assembly. Dealers can now utilize the Limited Parts Ordering (LPO) page on eMDCS to order the repair parts for 2.5L (with cylinder deactivation) and 2.5L turbo cylinder head repairs. There is no longer a need to contact hotline for part ordering. If there are any questions on part ordering or part status, contact the DAG group for assistance. |
| SA-031-21b | 2021-11-01. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN; EQUIPMENT. A new cylinder head assembly for service parts has been newly established for SKYACTIV-G 2.5 with cylinder deactivation when replacement is needed. Valves, valve springs, valve spring seats, and cotters (IN/EX) are included in the new assembly. |
| SA-013-21h | 2021-11-01. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT; ELECTRICAL SYSTEM. Some customers may complain about any of the following: Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle enrollment. Remote function(s) inoperative. Engine Start / Stop, Door Lock / Unlock, Lights ON / OFF, MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Confirm the customer's phone and vehicle have good to strong reception during the concern as shown in the table below. If the reception is weak, move the vehicle to a location where the reception is good to strong as shown in the table, then try to get the Authorization Code and/or operate the remote functions before proceeding to the Repair Procedure if there is still an issue. If the reception is good to strong, proceed to the Repair Procedure. |
| SA-049-21 | 2021-11-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. Beginning with July 1st vehicle production, vehicles will no longer have the In-Vehicle Digital Owner’s Manual (IVDOM) installed. 2021 CX-30 vehicles with VINs 3MVDM******300001 or greater (produced on or after July 1, 2021), 2021 Mazda3 (Japan built) vehicles with VINs JM1BP******400001 or greater (produced on or after July 1, 2021), 2021 Mazda3 (Mexico built) vehicles with VINs 3MZBP******250001 or greater (produced on or after July 1, 2021), The IVDOM was first launched for 7th Generation vehicles (2019-2021 Mazda3 & 2020-2021 CX-30) to improve usability and accessibility of the Owner’s Manual (OM) information and to reduce the number of OM pages. However, the situation surrounding the IVDOM has changed since then: The instrument cluster and center display provide the driver with sufficient information when an operational question arises or when a vehicle malfunction occurs. OM digitalization has been accelerating and consumer products and acceptance is rapidly growing with the spread of mobile internet devices. It has become increasingly difficult for the IVDOM to meet Cyber Security (CS) / Software Update (SU) regulation requirements. Due to these factors, Mazda has decided to discontinue the IVDOM and will shift their primary focus to the online Interactive Digital OM. |
| SA-038-21 | 2021-11-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY; ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS; EQUIPMENT. The Blind Spot Monitoring (BSM) system can malfunction with the following symptoms if the rear side radar sensors are installed facing the wrong direction. BSM system indicates vehicle on the opposite side. i-ACTIVSENSE indicator ring will not turn green, Rear Cross Traffic Alert (RCTA) does not work, Rear side radar sensor aiming may fail, TPMS DTC(s) stored. |
| MT-002-21a | 2021-10-31. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, OTHER. Ethanol is becoming a common additive in gasoline. Gasoline containing ethanol is likely available at your local gasoline station. Typical blends of ethanol include E10 and E85. E10: A blend of 10% ethanol and 90% gasoline. E85: A blend of 85% ethanol and 15% gasoline All Mazda vehicles can run on gasoline containing up to 10% ethanol (E10) but only some 1999-2001 B3000 trucks can run on gasoline with more than 10% ethanol blended. E10 compatible vehicles: All Mazda vehicles. E85 compatible vehicles: 1999-2001 B3000 Mazda trucks with the 8th VIN digit is V. |
| 09-031-21-3831 | 2021-10-31. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY; VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR; EQUIPMENT. Some customers may complain that the driver’s side outer mirror glass vibrates. This is due to a structural gap between the outer glass mirror holder and the mirror glass causing the mirror to vibrate when the vehicle body vibrates at high speeds. To eliminate this concern, double sided tape has been applied between the outer glass mirror holder and the mirror glass. |
| 09-029-21-3811 | 2021-10-31. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, OTHER; EQUIPMENT. When opening the fuel-filler lid to refuel, some customers may notice water and/or sand in the fuel-filler lid box area. They may complain about dried sand causing poor appearance. Since the drain hole on the dust cover is located in an improper position, water may not be able to completely drain which results in the accumulation of water and sand. To eliminate this concern, the dust cover (below) has been modified to drain the water more easily. |
| 01-012-21-3832 | 2021-10-31. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ENGINE AND ENGINE COOLING; TIRES:VALVE. Some vehicles may have a LOW ENGINE OIL LEVEL warning message and a CHECK ENGINE light illuminated in the instrument cluster, along with DTC P250F:00 stored in memory. DTC P250F:00 - Engine oil level signal: engine oil level low. Upon inspecting the engine oil level, the level is found to be low and there doesn't appear to be any trace of oil leakage in the engine compartment. This concern usually occurs when the mileage reaches approximately 3,100 - 4,700 miles (5,000 - 7,500km) and may also occur again after replacing or topping off the engine oil. The root cause of this concern has not been identified yet, therefore a repair procedure will be announced at a later date. Since this issue has been reported after a valve stem seal modification, it is very likely that valve stem seal damage is causing oil to leak into the combustion chamber. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.