Service bulletins for the 2020 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.
726 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| SA-036-23 | 2023-07-05. Service bulletin. STRUCTURE; EQUIPMENT. Interior parts made of resin have antistatic coating to prevent dust from sticking on the surfaces, and depending on the conditions of use, the antistatic components may crystallize slightly, giving an appearance of white stains on the surface. To remove the stains, wipe the stained surface with a towel soaked with water mixed with a small portion of a neutral detergent. If the white stains reappear again, simply wipe them again in the same way. NOTE: The antistatic effect does not deteriorate with this procedure. |
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| SA-015-23d | 2023-07-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. Connected Services, Frequently Asked Questions (FAQ) |
| SA-009-23e | 2023-07-05. Service bulletin. ENGINE AND ENGINE COOLING; EXTERIOR LIGHTING; LATCHES/LOCKS/LINKAGES; STRUCTURE. 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 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". |
| 09-025-23 | 2023-07-05. Service bulletin. VISIBILITY. Some customers may complain that the frequency of replenishing the window washer liquid is higher than expected, or they may complain of leakage at or around the washer motor (1). This is caused by a crack that may occur at the joint section of the washer motor housing due to an inappropriate assembly process. To eliminate this concern, the design of the washer motor has been modified to not have a joint section. This is caused by a crack that may occur at the joint section of the washer motor housing due to an inappropriate assembly process. To eliminate this concern, the design of the washer motor has been modified to not have a joint section. |
| 09-024-23 | 2023-07-05. Service bulletin. ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES. Some customers may experience that the out-of-area (reception area) type auto lock function sometimes fails. When the front door is being closed with a hand touching one or both of the touch sensors on the front outer handle, the out-of-area (reception area) type auto lock function may fail. Control software of the LF control unit (LFU) has been modified. |
| 09-007-23b | 2023-07-05. Service bulletin. SEATS. At PDI or when new vehicle is delivered, some customers may complain about wrinkles on the leather seat cushion and/or seat back surface. |
| 08-004-23 | 2023-07-05. Service bulletin. AIR BAGS; STEERING. Some vehicles with the two-step deployment control air bag module may exhibit a clicking sound when turning the steering wheel. This is caused by the horn spring (1) of the airbag module interfering with the black color tape (2) of the clock spring harness (3), resulting in a stick-slip noise (click on attached sound file below). |
| RF-23-07 | 2023-06-04. Service bulletin. EQUIPMENT. Part BEMD-50-M40C has been discontinued. |
| SA-032-23 | 2023-06-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. |
| SA-031-23 | 2023-06-04. 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-015-23c | 2023-06-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Frequently Asked Questions (FAQ) |
| SA-009-23d | 2023-06-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ENGINE AND ENGINE COOLING. 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, 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". |
| SA-005-23a | 2023-06-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure. |
| 16-003-23 | 2023-06-04. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. Some customers may complain that Mazda Connect does not start (blank screen) or that it takes a long time to restart/ reboot after starting the vehicle. This is caused by the initialization process with the CMU failing at startup due to a defective circuit board element. To eliminate this concern, the internal hardware (DRAM) of the CMU has been improved. |
| 09-021-23 | 2023-06-04. Service bulletin. VISIBILITY:GLASS, SIDE/REAR; STRUCTURE. Some vehicles may experience a gap between the glass and the rear door glass run-channel due to run-channel deformation. This causes poor appearance and wind noise when driving at high speed. This concern is due to the incorrect shape of the glass run-channel. |
| 09-018-23a | 2023-06-04. Service bulletin. VISIBILITY:GLASS, SIDE/REAR; STRUCTURE. Some vehicles may exhibit the glass run channel of the front door interfering with the rear door garnish. This is caused by the front door glass run channel not being fixed strongly enough to the door for the following situations where the cycles of door operation may result in interference and lead to damage on the rear door garnish. When the front door glass is closed, the glass run channel may be forced to move to the B pillar side. During very hot weather, the glass run channel may expand to the B pillar side. To eliminate this concern, the design of the front door glass run channel has been changed to be fixed stronger to the door. |
| 08-003-23 | 2023-06-04. Service bulletin. AIR BAGS. Some vehicles may exhibit that the air bag warning light turns on or repeats cycles of turning on and off with DTC B1126:13 and/or B1127:13 stored in memory. |
| 01-007-23 | 2023-06-04. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 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. |
| SA-022-23 | 2023-05-05. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain about an intermittent Beep sound (popping sound) every 1-2 minutes while driving. This may be cause by a software error in the navigation SD card. |
| SA-025-23 | 2023-05-05. Service bulletin. ELECTRICAL SYSTEM. When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated. |
| SA-021-23 | 2023-05-05. Service bulletin. ELECTRICAL SYSTEM. Qi Wireless Charger symptom troubleshooting |
| SA-020/23 | 2023-05-05. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. Some customers will report that their fuel door was stuck closed and would not open to refuel the vehicle. Follow the repair steps below unless the conditions outlined in TSB 09-019/21 - FUEL-FILLER LID PANEL IS DEFORMED for 2019-2021 Mazda3 and 2020-2021 CX-30 are present. |
| SA-015-23b | 2023-05-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Mazda Connected Services - Frequently Asked Questions (FQA) |
| SA-009-23c | 2023-05-04. Service bulletin. LATCHES/LOCKS/LINKAGES; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ENGINE AND ENGINE COOLING. 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. 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". |
| 15-001-23 | 2023-05-03. Service bulletin. LANE DEPARTURE: SENSING SYSTEM: RADAR; EQUIPMENT. Some vehicles may exhibit the warning messages Safety and Driver Support Systems Temporarily Disabled or Front Radar Obscured. Drive Safely displayed in the instrument cluster despite no dirt on the front radar sensor while driving in specific locations as follows: |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.