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.

• 10189949Mar 8, 2021Equipment, Engine cooling. CHECK ENGINE LIGHT ON WITH DTC P0126:00 AND ENGINE RUNNING COOLER THAN NORMAL / POOR HEATER PERFORMANCE / LOW ENGINE COOLANT TEMPERATURE (BLUE) LIGHT ON: Some customers may experience the CHECK ENGINE LIGHT ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: The engine takes longer to warm up. The engine temperature gauge fluctuates. The low coolant temperature indicator (blue)…
• 10189871Mar 8, 2021Electrical system. Key Transmitter Power Saving Function: When the key transmitter Power Saving Function is turned ON, transmitter battery power consumption is restricted, thereby extending the transmitter battery life.
• 10188024Feb 25, 2021Engine cooling. Some customers may experience the CHECK ENGINE LIGHT ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: The engine takes longer to warm up. The engine temperature gauge fluctuates. The low coolant temperature indicator (blue) light stays on longer or comes on while driving. Poor heater performance, especially at idle.
• 10188094Feb 23, 2021Electrical system, Equipment. On certain CX-30 vehicles equipped with the Bose audio option, a loud static noise may be exhibited from some or all of the speakers due to inappropriate control program of the audio amplifier. The noise can occur regardless of the driving status of the vehicle and the engine on/off.
• 10188101Feb 22, 2021Latches, locks and linkages, Engine cooling, Equipment, Electrical system. Mazda Motor Corporation has decided to conduct a Special Service Program impacting certain 2019-2021 Mazda3 and 2020-2021 CX-30 vehicles built at MC and MMVO. Please see the descriptions, models, years, and VIN Ranges below. NOTE: A new MDRT Tool will be sent to all dealers, please read the attached MDRT Tool document arriving with this email.
• 10188031Feb 22, 2021Equipment, Engine cooling. 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…
• 10188029Feb 22, 2021Exterior lighting, Equipment, Latches, locks and linkages. 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…
• 10188017Feb 22, 2021Suspension. Some vehicles may exhibit a rattle noise from the front suspension when driving over bumps or on a road with a wavy surface. The noise may be caused by the mounting rubber (1) because of insufficient clearance between the rubber and the metal bracket of the mounting rubber during the assembly process. To correct this issue, the mounting rubber has been modified to ensure the proper clearance.
• 10188016Feb 8, 2021Electrical system. 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.
• 10188015Feb 8, 2021Electrical system. The Mazda DCA-8000PM is required for all warranty battery testing. If the Mazda DCA-8000PM 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.
• 10188030Feb 2, 2021Engine cooling, Equipment. 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…
• 10188028Feb 2, 2021Engine cooling, Latches, locks and linkages, 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…
• 10186813Jan 29, 2021Equipment. Section 6 of the Wireless Charging Pad instructions call for the use of an "ultrasonic cutter" to cut a rectangular hole for the harness to pass through and to serve as an access point to pop the wireless charger base out should service be required. Since an "ultrasonic cutter" is not readily available, follow the Repair Procedure to cut the rectangular hole.
• 10186812Jan 29, 2021Lane departure, Equipment. Some vehicles may experience M-MDS (MDARS) showing the front radar dynamic aiming is incomplete. This may be caused by: Faulty front radar sensor software logic (MDARS showing the front radar dynamic aiming is incomplete although the procedure is completed). Front radar sensor out of alignment due to vehicle accident.
• 10186701Jan 26, 2021Equipment. A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is caused by condensation, dust, and pollen within the cooling unit. This condition is usually worse during high humidity conditions. “Mazda Air Cooling Coil Coating” is…
• 10186699Jan 26, 2021Steering. Some customers may complain that the steering wheel is off center more than 3° even when driving straight on a flat road.
• 10186705Jan 21, 2021Body and structure. Some vehicles may experience stains appearing on the hood, roof and/or trunk of the vehicle. This concern is most likely to be found in a cold weather areas just after the RAPGARD is removed at PDI. This may be caused by moisture which has been trapped and condensed between the paint and the RAPGARD. These types of stains can be removed with a heat gun or an infrared drier.
• 10186704Jan 21, 2021Body and structure. When encountering a vehicle with paint damage, refer to the "Mazda Paint Warranty Guide" to determine cause, prevention, remedy, and warranty coverage (if applicable).
• 10186698Jan 21, 2021Wheels. 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.
• 10186693Jan 21, 2021Wheels, Steering, Transmission and drivetrain, Engine cooling. Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers.
• 10186806Jan 19, 2021Equipment, 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. CAUTION: If TCU activation is not performed, connected vehicle functions will not operate. This will have a negative impact on the customer because they will need to return to…
• 10186805Jan 15, 2021Vehicle speed control, Equipment. Some customers may complain about the following symptoms occurring when driving without anything ahead (no metallic object reflects the radar wave such as a vehicle ahead, an oncoming vehicle, a road sign or a guard rail). While using Mazda Radar Cruise Control (MRCC), the MRCC cancels by itself. When MRCC is not in use, “Safety and Driver Support Systems Temporarily Disabled.
• 10186802Jan 13, 2021Wheels. Some vehicles may display incorrect tire pressures in MAZDA CONNECT and/or the MyMazda App. This may be caused by an incorrect calendar entry (month/day/year) after a battery disconnect or infotainment system software update.
• 10185061Dec 18, 2020Tires, Equipment, Electrical system. 2020-2021 CX-30 SERVICE CAUTIONS FOR NEW AND REVISED FEATURES. The 2020 CX-30 has new and revised features that are different from previous models, and may be difficult to understand. This Service Alert provides valuable information to support potential dealer and customer concerns.
• 10185057Dec 17, 2020Body and structure, Equipment. Some vehicles may exhibit water entering the passenger compartment from the rear door through the bottom of the service hole behind the rear door trim during rain or when washing the vehicle.
• 10185046Dec 17, 2020Electrical system. 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.
• 10185181Dec 14, 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.
• 10185056Dec 14, 2020Electrical system, Equipment. Some vehicles equipped with a Bose® audio system may produce a loud static noise from some or all of the speakers when the engine is running or not. The noise may be caused by faulty audio amplifier control software. To eliminate this concern, the audio amplifier control software has been modified.
• 10185054Dec 10, 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.
• 10185052Dec 10, 2020Seats, Equipment. 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, Engine cooling, Equipment, 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, 2020Engine cooling, Electrical system, Body and structure, 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…
• 10185050Dec 7, 2020Transmission and drivetrain, Engine cooling, Equipment. 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.
• 10185058Dec 3, 2020Back-over prevention (rear camera), Electrical system, Equipment. Some vehicles may exhibit that both sides (right and left sides) of the Blind Spot Monitoring (BSM) and Rear Cross Traffic Alert (RCTA) system do not work
• 10185185Dec 2, 2020Equipment, Engine cooling. Some customers may experience the CHECK ENGINE LIGHT ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: The engine takes longer to warm up. The engine temperature gauge fluctuates. The low coolant temperature indicator (blue) light stays on longer or comes on while driving. Poor heater performance, especially at idle.
• 10185055Dec 1, 2020Body and structure, Equipment. Some vehicles may have a rear ultrasonic sensor rubber seal that is either missing, deformed or comes off when wiping down the rear bumper.
• 10183664Nov 30, 2020Electrical system, Engine cooling, Equipment, Latches, locks and linkages. 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
• 10183666Nov 18, 2020Transmission and drivetrain, Equipment. CRACKED REAR DIFFERENTIAL. The rear differential case could develop a crack in the case, as shown below. NOTE: This could affect new vehicles just delivered to the dealer as well as customer vehicles.
• 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, 2020Visibility (wipers, defrost, mirrors), Equipment, 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…
• 10183661Nov 16, 2020Electrical system, Wheels, Visibility (wipers, defrost, mirrors), Equipment. 2020-2021 CX-30 SERVICE CAUTIONS FOR NEW AND REVISED FEATURES. The 2020 CX-30 has new and revised features that are different from previous models, and may be difficult to understand. This Service Alert provides valuable information to support potential dealer and customer concerns.
• 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, 2020Electrical system, Exterior lighting, Engine cooling. 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…
• 10183659Nov 6, 2020Equipment, Electrical system. 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…
• 10182104Oct 30, 2020Electrical system. 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.
• 10182123Oct 28, 2020Engine cooling, Equipment. 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, 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.
• 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

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