2021 Mazda MAZDA3 Technical Service Bulletins

634 technical service bulletins (TSBs) are on record for the 2021 Mazda MAZDA3. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10185052Dec 10, 2020Equipment, 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. Customers having this concern should have their vehicle repaired by a qualified upholstery repair specialist using the following repair procedure.
• 10185183Dec 9, 2020Electrical system, Equipment, Engine cooling, Latches, locks and linkages. CONNECTED VEHICLE SYMPTOM TROUBLESHOOTING: IMPORTANT NOTE: Some 2020 Mazda3 vehicles may have incorrect infotainment software version 10042 installed. The incorrect software will cause MyMazda App Connected Vehicle enrollment errors. Go to SSPC1. Some customers may complain about any of the following: · Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle…
• 10185180Dec 9, 2020Electrical system, Engine cooling, Equipment, Body and structure. IMPORTANT NOTE: Some 2020 Mazda3 vehicles may have incorrect infotainment software version 10042 installed. The incorrect software will cause MyMazda App Connected Vehicle enrollment errors. Go to SSPC1. 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 (and Software Update Error message on…
• 10185059Dec 7, 2020Body and structure, Equipment. DRW35 - 2021 CX-30 & 2021 MAZDA3 - POTENTIAL PAINT SPOTS ON VEHICLE. Concern Outline: It is possible that fine yellow and/or white paint spots may be present on the entire body surface of the vehicle. The affected vehicles were potentially exposed to overspray from a construction site near the port. Outline of Repair: All vehicles are arriving from Mexico to Port Baltimore and are expected to start shipping to…
• 10185050Dec 7, 2020Engine cooling, Equipment, Transmission and drivetrain. Some customers may complain that after accelerating in hot weather, the A/C blows warm air for a longer time than other models. This is caused by improper control software of the PCM not allowing the A/C compressor to resume properly after acceleration. To eliminate this concern, the control software of the PCM has been modified.
• 10183664Nov 30, 2020Electrical system, Latches, locks and linkages, Engine cooling, Equipment. IMPORTANT NOTE: Some 2020 Mazda3 vehicles may have incorrect infotainment software version 10042 installed. The incorrect software will cause MyMazda App Connected Vehicle enrollment errors. Go to SSPC1. 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 (and Software Update Error message on…
• 10183660Nov 30, 2020Equipment. MAZDA CONNECTED SERVICES - FREQUENTLY ASKED QUESTIONS (FAQ). 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, Dealer Processes, Educational Videos, Resources
• 10183636Nov 20, 2020Body and structure, Equipment. DRW35 - 2021 CX-30 & 2021 MAZDA3 - POTENTIAL PAINT SPOTS ON VEHICLE. Concern Outline: It is possible that fine yellow and/or white paint spots may be present on the entire body surface of the vehicle. The affected vehicles were potentially exposed to overspray from a construction site near the port. Outline of Repair: All vehicles are arriving from Mexico to Port Baltimore and are expected to start shipping to…
• 10183667Nov 17, 2020Equipment, Engine cooling. HVAC SYSTEM BLOWS HOT AIR UNDER ACCELERATION. Some customers may complain that the HVAC system blows hot air on occasion (blows cold air, then hot air, then cold air again). The customer may notice that it is more pronounced when they first start driving the vehicle and/or when accelerating.
• 10183665Nov 17, 2020Equipment, Visibility (wipers, defrost, mirrors), Forward collision avoidance. FORWARD SENSING CAMERA (FSC) DYNAMIC AIMING NOT COMPLETED AND/OR DTC B14F0:76 STORED. CAUTION: DO NOT turn the igintion OFF after dynamic aiming starts until aiming has completed or aiming timeout. If the ignition is turned OFF, the VCM will store B14F0:76 and FSC aiming will not complete. FSC dynamic aiming (mid-drive aiming) may not complete if the vehicle is driven on a road as described below: The road lane…
• 10183598Nov 16, 2020Equipment. Some customers may experience the master warning light and/or the "In-Vehicle Network Malfunction" warning message in the instrument cluster on with DTC B119F:01, B119F:13 and/or B119F:2B stored when the vehicle position cannot be displayed correctly.  B119F:01 (TCU - Tel antenna No.
• 10183663Nov 6, 2020Engine cooling, Electrical system, Exterior lighting. IMPORTANT NOTE: Some 2020 Mazda3 vehicles may have incorrect infotainment software version 10042 installed. The incorrect software will cause MyMazda App Connected Vehicle enrollment errors. Go to SSPC1. 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 (and Software Update Error message on…
• 10182123Oct 28, 2020Equipment, Engine cooling. Currently, the instructions on MGSS recommend the use of Loctite 962T or equivalent when installing a SKYACTIV cylinder head, but it is no longer available. The following 3 adhesives are alternatives available as an equivalent to Loctite 962T: Loctite 272, Loctite 518 Threebond TB-1386H
• 10182120Oct 28, 2020Electrical system. CONNECTED VEHICLE SYMPTOM TROUBLESHOOTING: IMPORTANT NOTE: Some 2020 Mazda3 vehicles may have incorrect infotainment software version 10042 installed. The incorrect software will cause MyMazda App Connected Vehicle enrollment errors. Go to SSPC1. Some customers may complain about any of the following: Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle…
• 10182097Oct 20, 2020Electrical 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). NOTE: Device compatibility can be found at connect.mazda.com - Support - Compatibility.
• 10182110Oct 19, 2020Equipment. MAZDA CONNECTED SERVICES - FREQUENTLY ASKED QUESTIONS (FAQ). 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, Dealer Processes, Educational Videos, Resources
• 10182108Oct 19, 2020Electrical system, Engine cooling. Some customers may experience an “In-Vehicle Network Malfunction” message appearing in the instrument cluster. This concern occurs when turning the ignition on or starting the engine when the battery is at 8 volts or lower (vehicle is in sleep mode), then it is charged to normal voltage while connected to the vehicle. NOTE: This concern will not occur if the battery is charged when removed from the vehicle.
• 10182124Oct 16, 2020Equipment, Back-over prevention (rear camera), Electrical system. MAZDA CONNECT SYMPTOM TROUBLESHOOTING (7TH GENERATION VEHICLES). Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure. Index: 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…
• 10182122Oct 15, 2020Equipment, Electrical system. APPLE CARPLAY / ANDROID AUTO FREQUENTLY ASKED QUESTIONS (FAQ): NOTE: The following vehicles are not equipped with Apple CarPlay / Android Auto, but it can be activated using MDARS. See Activation instructions on MGSS - Infotainment - MAZDA CONNECT Updates - Apple Carplay / Android Auto MDARS Activation Instructions
• 10182096Oct 13, 2020Equipment, Electrical system. 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). NOTE: Device compatibility can be found at connect.mazda.com - Support - Compatibility. 16-001-20-3683c
• 10182121Oct 12, 2020Equipment. ACCESSORY INSTRUCTIONS LOCATION: Accessory instructions can be found in the Accessory eCatalog. https://ecatalog.mazdausa.com
• 10182128Oct 7, 2020Body and structure, Visibility (wipers, defrost, mirrors). DRW33 - CHROME PLATED WINDOW MOLDINGS CONCERN FROM PACIFIC TYPHOON: On certain subject vehicles parked outside after production, it is possible that the chrome plated window moldings may be dirty or have rust spots from a Typhoon that recently passed by Hiroshima and Hofu Japan. These vehicles may have been exposed to misty seawater caused by a strong wind and could have potentially sustained chrome molding damage.
• 10180783Sep 29, 2020Engine cooling, Equipment. MAZDA CONNECTED SERVICES - FREQUENTLY ASKED QUESTIONS (FAQ). 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, Dealer Processes, Conditions for Remote Engine Start Will Not Function, Conditions for Remote Engine Start Function Will turn engine OFF, Educational Videos…
• 10180669Sep 25, 2020Body and structure, Equipment. Some vehicles may exhibit that the liftgate interferes with the rear bumper when closed forcefully, resulting in damaged paint on the rear bumper. Due to variations of the clearance between the liftgate and the rear bumper, the bottom edge of the liftgate may overrun the rear bumper. To correct this concern, the hardness of stop rubbers on the liftgate has been modified.
• 10180794Sep 23, 2020Equipment. When replacing the Body Control Module (BCM) in a 7th generation vehicle, it needs to be configured and the instructions in the Workshop manual on MGSS are incorrect. Use the instructions in the Repair Procedure below to configure the new BCM.
• 10180786Sep 22, 2020Equipment, Back-over prevention (rear camera). MAZDA CONNECT SYMPTOM TROUBLESHOOTING (7TH GENERATION VEHICLES). Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure. Index: 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…
• 10180788Sep 21, 2020Equipment. Some customers may experience an engine no start condition where the engine will only start by holding the key transmitter over the Start/Stop button. This may be caused by an accidental activation of the keyless pacemaker function. NOTE:  DTC B13D3:97 (Remote transmitter registration work not completed) is stored if key programming is performed when keyless pacemaker function is activated.  Key…
• 10180717Sep 14, 2020Electrical system, Equipment. When performing vehicle services such as control unit software update, control unit registration/activation, CMU log data retrieval, etc., always do the following:  Use the GR8 battery charger SST to maintain battery voltage. See SA-063/20.  Use M-MDS hardware that is in good working condition. CAUTION: If the GR8 is not used or if the M-MDS hardware is not in good working condition, a control unit…
• 10180715Sep 9, 2020Transmission and drivetrain, Engine cooling, Equipment. Some customer's may complain that the HVAC system only blows warm to cool air (not cold) after starting the vehicle and not moving right away. This may be caused by a closed Active Air Shutter (AAS). Under specific circumstances, the AAS has a “learning issue” where AAS is kept closed after startup even if the PCM requests it to be open. The shutters will open and work correctly as soon as the vehicle…
• 10180793Sep 1, 2020Electrical system, Equipment. When replacing the Body Control Module (BCM) in a 2019 Mazda3, it needs to be configured and the instructions in the Workshop manual on MGSS are incorrect. Use the instructions in the Repair Procedure below to configure the new BCM.
• 10180792Sep 1, 2020Electrical system, Equipment. During BCM replacement, MDARS may display a Configuration Error warning message. This may be caused by any of the following: Poor internet connection  MDARS failure Low Battery. Perform the BCM Recovery Procedure below to manually configure the BCM.
• 10179315Aug 18, 2020Electrical system. When performing vehicle services such as control unit software update, control unit registration/activation, CMU log data retrieval, etc., always use the GR8 battery charger SST to maintain battery voltage.
• 10179313Aug 13, 2020Forward collision avoidance, Brakes, Visibility (wipers, defrost, mirrors)…. Some customers may complain about the following message displayed in the Multi-Information Display: In the following cases, the MRCC with Stop & Go function system is canceled when the vehicle is traveling at 19 mph (30 km/h) or less:  The Forward Sensing Camera (FSC) cannot detect target objects due to one of the following:  The windshield is dirty  The FSC lens is foggy  There is low…
• 10186263Dec 19, 2016Electrical system, Equipment. MAZDA Mobile start (MMS) cannot communicate with vehicle

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