2020 Mazda CX-30 Technical Service Bulletins

687 technical service bulletins (TSBs) are on record for the 2020 Mazda CX-30. 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.

• 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
• 10182126Oct 14, 2020Equipment, Engine cooling. CRACKED REAR DIFFERENTIAL: Be aware that some new AWD vehicles have been found with cracked rear differential cases, as shown below. NOTE: This may affect new vehicles just delivered to the dealer or new vehicles in dealer inventory.
• 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
• 10182098Oct 12, 2020Engine cooling, Equipment, Electrical system. 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.
• 10182112Oct 2, 2020Equipment, Electrical system. 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.
• 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…
• 10180781Sep 29, 2020Equipment. 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…
• 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…
• 10180718Sep 18, 2020Electrical system, Equipment. 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.
• 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…
• 10180787Sep 10, 2020Equipment. 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.
• 10180714Sep 10, 2020Equipment, 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…
• 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.
• 10179085Aug 21, 2020Brakes, Equipment. Some vehicles equipped with Smart Brake Support (SBS) may exhibit a front radar system malfunction message in the instrument cluster with DTC C1A67:04 (front radar sensor internal malfunction) stored in memory. This may be caused by water penetrating into the front radar sensor through the breather hole when exposed to a great amount of water and damaging the radar sensor, resulting in the DTC C1A67:04. To…
• 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…
• 10179081Aug 13, 2020Fuel system. 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…
• 10179078Aug 11, 2020Equipment. Some customers may experience a no start because the battery is discharged after the vehicle is parked for more than 8 hours. This may be caused by one or more of the following, resulting in excessive parasitic draw (dark current) on the battery. 1. The vehicle control system may not have gone to sleep because a key fob was left in the vehicle after the ignition switch was turned off and the doors were closed.
• 10179166Aug 10, 2020Engine cooling. Some customers may experience an engine no start due to low battery voltage on 2019-2020 Mazda3 and 2020 CX30. Inform the customer that Mazda is actively investigating this issue and apologizes for any inconvenience. Mazda would like to request both dealer and customer support to expedite a repair. Customers having this concern should be instructed to contact Mazda Roadside Assistance and have their vehicle…
• 10179164Aug 7, 2020Electrical system. On some vehicles, the Commander switch might be inoperative. This could be caused by fuse F13 (15A) being removed instead of F15 (15A) at the factory in the lower panel compartment on the left side of the steering wheel.
• 10179228Aug 3, 2020Wheels, Tires. 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.
• 10179175Aug 3, 2020Electrical 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.
• 10179157Aug 3, 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
• 10177974Jul 27, 2020Equipment. DRW29 - 2020 CX-3, CX-30, CX-5, CX-9, MAZDA6 AND MAZDA3 - SECOND PDI OF ALLOCATED FLEET VEHICLES: Concern Outline: There are 597 vehicles contained in this DRW, and all had a paid Pre-Delivery Inspection performed at the port and were to be used as fleet vehicles.
• 10177852Jul 27, 2020Electrical system, Equipment, Latches, locks and linkages, Engine. When the vehicle is in sleep mode, some customers may experience a failed remote control attempt using the MyMazda APP, however, the second attempt works fine and no DTCs are stored. Remote control functions: - Remote Engine Start/Remote Engine Stop - Remote Door Lock/Remote Door Unlock - Remote Hazard Light. This concern may be caused by improper telematics communication unit control software. To eliminate this…
• 10177952Jul 22, 2020Equipment. 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.
• 10177849Jul 22, 2020Latches, locks and linkages, Equipment. Some customers may complain that the rear console lid does not slide smoothly. This may be caused by improperly positioned felt pads attached to the rear console lid lock, which may have moved out of position after repetitive use. The exposed adhesive residue may stick to the rail and disrupt smooth sliding operation. To eliminate this concern, the felt pad positions have been changed.
• 10177934Jul 20, 2020Electrical system, Engine. Some customers may experience an engine no start due to low battery voltage on 2019-2020 Mazda3 and 2020 CX-30. Inform the customer that Mazda is actively investigating this issue and apologizes for any inconvenience. Mazda would like to request both dealer and customer support to expedite a repair. Customers having this concern should be instructed to contact Mazda Roadside Assistance and have their vehicle…
• 10177927Jul 20, 2020Engine, Electrical system. 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:
• 10177847Jul 20, 2020Equipment. When encountering a vehicle with paint damage, refer to the "Mazda Paint Warranty Guide" to determine cause, prevention, remedy, and warranty coverage (if applicable).
• 10177924Jul 16, 2020Electrical system. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
• 10177846Jul 16, 2020Equipment, Electrical system. Some customers may hear a repeating click sound when using the HVAC system. The click sound may be caused by the air mix doors moving back and forth. This concern has been eliminated by a dash-electrical supply unit control software modification.
• 10177840Jul 16, 2020Transmission and drivetrain, Electrical system, Engine cooling. Some customers may experience the master warning light turning on and a lack of power with DTC P2BF6:00 (Exhaust shutter valve position sensor circuit low input (1DC)) stored in memory. This is caused by improper logic written in the PCM for the exhaust shutter valve position sensor.
• 10177970Jul 15, 2020Equipment. MSP57 - 2020 CX-30 WIRELESS CHARGING PAD LED STAYS ON: Concern Outline: The Wireless Charging Pad power indicator LED light does not shut off when the vehicle ignition is cycled off and the accessory remains functional in all conditions which may drain power from the battery due to an incorrect installation procedure. Only vehicles with the accessory installed at Port Salamanca are affected. Action Required: The…
• 10177853Jul 15, 2020Equipment, Electrical system. 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 Workshop Manual diagnosis. Aftermarket devices may be the cause of the electrical concern. Ask the customer if any aftermarket devices have been installed. Below are a couple of examples of unusual electrical concerns caused by aftermarket devices.
• 10177841Jul 8, 2020Electrical system, Engine cooling, Equipment. Some customers may complain about a very low frequency noise and/or vibration felt at the steering wheel, the floor and/or the seats when driving at 1500-1650 rpm in any gear position. This may be caused by normal vehicle behavior while the cylinder deactivation is active (two cylinders drive). The state of the cylinder deactivation can be monitored in the center display to help verify if this is the issue…
• 10177920Jul 6, 2020Equipment. In order to ensure key code security, MNAO has restricted key code access for the new auxiliary key. This Service Alert provides information on how to obtain the 10-digit key code needed for cutting a new auxiliary key blank if all auxiliary keys are lost.
• 10177848Jul 6, 2020Body and structure, Equipment. 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…
• 10177009Jun 29, 2020Equipment, Electrical system. 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.
• 10177004Jun 29, 2020Equipment. When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to initialize the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated.CAUTION:If TCU initialization is not performed, connected vehicle functions will not operate. This will have a negative impact on the customer because they will need to…
• 10177014Jun 26, 2020Engine cooling. Some customers may experience an engine no start due to low battery voltage on 2019-2020 Mazda3 and 2020 CX30. Inform the customer that Mazda is actively investigating this issue and apologizes for any inconvenience. Mazda would like to request both dealer and customer support to expedite a repair. Customers having this concern should be instructed to contact Mazda Roadside Assistance and have their vehicle…
• 10176980Jun 25, 2020Equipment, Electrical system. 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. (TCU - Tel antenna No. 1 malfunction) (TCU - TEL antenna No.1 circuit malfunction) (CMU - GPS antenna signal circuit malfunction).
• 10177011Jun 23, 2020Forward collision avoidance, Visibility (wipers, defrost, mirrors), Lane…. FSC dynamic aiming (mid-drive aiming) may not complete if the vehicle is driven on a road as described below: The road lane markings are covered by snow and are not visible. There are no road lane markings on the road surface. The road is winding and the vehicle cannot drive straight (300 m / 984 ft or more turning radius is required).

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