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Service bulletins for the 2020 Mazda CX-30

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.

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

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Bulletins, newest first
SA-069-202020-11-04. Service bulletin. EQUIPMENT. ACCESSORY INSTRUCTIONS LOCATION: Accessory instructions can be found in the Accessory eCatalog. https://ecatalog.mazdausa.com
SA-031-20f2020-11-04. Service bulletin. ELECTRICAL 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 enrollment (and Software Update Error message on 2020 Mazda3 only). Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF
SA-067-20a2020-11-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Some customers may experience an intermittent static sound coming from the audio speakers. After ignition OFF. While driving (ignition ON). When opening the driver's door to enter the vehicle. The infotainment system may recover after: IGN OFF - ON. Removing and installing the Audio fuse. Disconnecting and reconnecting the battery terminal.
SA-007-20l2020-11-04. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. 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
09-034-20-37432020-11-04. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. 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. This concern is caused by improper telematics communication unit control software. To eliminate this concern, the telematics communication unit control software has been modified.
09-018-20-3690a2020-11-04. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Some customers may notice white lines appearing across the instrument cluster (as shown below). The white lines may be caused during the production process where poor contact occurs at the internal LCD terminals.
07-005-20-37452020-11-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. Some customers may complain that the A/C blows warm air while idling after restarting a warm engine. This is caused by improper control software of the PCM not allowing the active air shutter to open properly, resulting in lower cooling performance at idle. To eliminate this concern, the control software of the PCM has been modified.
16-001-20-3683c2020-11-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. 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.
16-001-20-3683b2020-11-03. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM:SOFTWARE. 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
SA-060-20c2020-10-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. 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.
SA-060-20b2020-10-05. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT ADAPTIVE/MOBILITY. 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.
SA-059-20b2020-10-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 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.
SA-048-20a2020-10-05. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. 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 programming is not possible when keyless pacemaker function is activated.
SA-029-20g2020-10-05. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored: • B119F:01 TCU - Tel antenna No. 1 malfunction• B119F:13 (TCU - TEL antenna No.1 circuit malfunction)• B119F:2B (CMU - GPS antenna signal circuit malfunction)• B1252:87 TCU - Communication error with connectivity master unit (CMU)• U0156:00 VCM - Communication error with connectivity master unit (CMU)• U0156:00 BCM - Communication error with connectivity master unit (CMU)• U0198:00 BCM - Communication error with emergency call unit• U212D:00 BCM - Communication error with light control module (RH)• U3000:00 TCU - Telematics communication unit internal malfunction• Low Voltage Battery DTCs
SA-027-20e2020-10-05. Service bulletin. BACK OVER PREVENTION; EQUIPMENT ADAPTIVE/MOBILITY. 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 Recognition Does Not Work No. 9 Cannot Make a Hands-Free Call No. 10 Cannot Play Bluetooth Audio No. 11 How to Check Navi SD Card VIN Lock
SA-007-20k2020-10-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. 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, Resources
SA-003-20d2020-10-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. When the body control module (BCM) has been replaced or reprogrammed and the software is updated to the file names shown below, DTC U2050:55-BCM (Activation of remote control not implemented) may be stored in memory without any warning indication for the driver. This is caused by a communication error between the telematics communication unit (TCU) and BCM when the control software in them are not of the version being ready for activation of the connected service.
SA-067-202020-10-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Some customers may experience an intermittent static sound coming from the audio speakers. • After ignition key OFF• While driving (key ON).• When opening the driver's door to enter the vehicle. The infotainment system may recover after:• IGN OFF - ON• Removing and installing the Audio fuse.• Disconnecting and reconnecting the battery terminal.
SA-066-202020-10-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 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 failure may occur.
SA-065-202020-10-05. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT:APPLIANCE:AIR CONDITIONER. 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 speed exceeds 6.25 MPH (10 KPH). NO DTC will be set when this happens.
SA-061-20a2020-10-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. If you receive a customer concern about the CHECK IN light coming on and DTC P3400 (cylinder deactivation system malfunction) stored, the cylinder deactivation oil control valve may be plugged with plastic debris from the oil filter wrapper. The debris may enter the center of the oil filter when poking a hole in the filter wrapper during removal, and then travel through the engine and plug the cylinder deactivation oil control valve.
SA-063-202020-09-03. Service bulletin. ELECTRICAL 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.
SA-062-202020-09-03. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; PARKING BRAKE; VISIBILITY; FORWARD COLLISION AVOIDANCE. 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 visibility due to rain, fog or snow • It is at night and there is not enough light • There is direct or reflected sunlight on the FSC • There is problem with the FSC • There is a problem with the AUTOHOLD control function. • There is a problem with the electric parking brake (EPB).
MT-002-202020-09-02. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS; WHEELS. New CARB regulation regarding mandatory checking and documenting of tire pressure whenever a vehicle is in for service work. This applies to all service shops (including Mazda dealerships) in California effective September 1, 2010.
SA-060-202020-09-01. Service bulletin. ELECTRICAL SYSTEM. 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.

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