2021 Mazda CX-30 Technical Service Bulletins

616 technical service bulletins (TSBs) are on record for the 2021 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.

• 10226924Nov 14, 2022Electrical 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 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. Examples: 1. Devices connected to the…
• 10226923Nov 14, 2022Visibility (wipers, defrost, mirrors), Electrical system. Some customers may complain the HVAC system not maintaining the correct temperature or the ambient (outside) temperature reading incorrectly. This is caused by a failure in the ambient temperature sensor. To correct this issue, the ambient temperature sensor has been modified.
• 10226826Nov 9, 2022Body and structure. Some vehicles may experience white-streak stains appearing on the front door that look like they seeped out from under the outer mirror base. This is caused by water intruding from gaps of the outer mirror body and/or the hinge of the outer mirror, and corrosion occurring on the aluminum die-cast inner base in the outer mirror. Water, including white-salty corrosion, may drip out from gaps under the outer mirror…
• 10226816Nov 7, 2022Engine cooling. Some vehicles may have a "LOW ENGINE OIL LEVEL" warning message and a CHECK ENGINE light illuminated in the instrument cluster with DTC P250F:00 stored in memory, and the oil level has actually decreased to near low. - DTC P250F:00 - Engine oil level signal: engine oil level low This is caused by an oil consumption increase due to damage of the valve seals on the exhaust side. To eliminate this concern, the design…
• 10226898Nov 4, 2022Electrical 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.
• 10226916Nov 2, 2022Electrical system. Some customers may comlpain 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.
• 10226918Nov 1, 2022Electrical system. Some customers may complain about intermittent audio no sound from the MAZDA CONNECT infotainment system and/or static noise from the speakers. The concern may be reproduced by tapping on the dash pad near the MAZDA CONNECT center display and the following DTC's may be stored.
• 10226896Nov 1, 2022Electrical system. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA01_12004 or later). Ver. 7000C0A-NA01_12004 fixes these software errors (bugs): * Album artwork may not appear when playing music using an USB connected iPhone. * The center display may turn black when the gear is shifted from reverse position to parking position. * Screen freezes and…
• 10225784Oct 28, 2022Visibility (wipers, defrost, mirrors). Some vehicles may exhibit windshield glass distortion or a double-image from the active driving display. These may be due to a) distortion in the windshield glass not properly removed during the manufacturing process or b) glass with incorrect specifications used in the manufacturing process. To eliminate these concerns, the windshield glass manufacturing process has been modified.
• 10225779Oct 19, 2022Equipment. 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.
• 10225776Oct 19, 2022Engine 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 NOTE: * Vehicles with SKYACTIV-G 2.5T are not applicable.
• 10225785Oct 17, 2022Electrical system. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Ver. 7000C0A-NA06_12012 or later).
• 10225767Oct 17, 2022Transmission and drivetrain. The new SKYACTIV-DRIVE FW6A-EL AT uses "Automatic Transmission Fluid (ATF) Type: FZ". Only use "ATF-FZ" to fill or top off the fluid level. ATF-FZ is specially designed for use in the SKYACTIV-DRIVE series AT. It is a low viscosity formula with less friction for better fuel economy. NOTE: ATF-FZ is colored blue for easy identification.
• 10225724Oct 17, 2022Body and structure. Some vehicles may experience exterior trim heat damage when parked near a glass building or Low-E windows. This may be caused by the sun's reflection.
• 10225763Oct 12, 2022Electrical system. 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…
• 10225761Oct 12, 2022Electrical system. Some vehicles may have one of the following DTCs stored in memory along with a system status notice on the Multi-information display OR display a system status notice with no DTC: * C1001:92 - Forward sensing camera (FSC) poor field of view [Gen 6 vehicles] * B14F0:92 - General temporary failure in forward sensing camera (FSC) [Gen 7 vehicles built on or before March 2, 2019] * No DTC - Warning Message only [Gen 7…
• 10225778Oct 10, 2022Electrical system. Some customers may complain the A/C blows warm. This may be caused by one of two things. Cause 1: 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. During a hard acceleration above a certain throttle level opening, the PCM stops the A/C compressor…
• 10225751Oct 10, 2022Engine cooling. Some vehicles equipped with a coolant control valve may exhibit difficulties when refilling the coolant because the control valve is closed and air in the engine cannot escape during ignition ON. Therefore, turn the ignition OFF when refilling engine coolant using the radiator filler neck.
• 10225730Oct 10, 2022Equipment. Mazda Connected Services Frequently Asked Questions (FAQs)
• 10225727Oct 10, 2022Electrical system. 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. * Remote function(s) inoperative. - Engine Start / Stop - Door Lock / Unlock - Lights ON / OFF * MAZDA CONNECT connected vehicle reception strength icon shows "X" or " "
• 10225774Oct 6, 2022Engine cooling. Some vehicles may exhibit accumulation of dried coolant (1) around the water pipe (2). This is caused by a gap between the housing and pipe due to a press fitting during the manufacturing process. The accumulated coolant is solidified and plugs the gap in high temperature environment and the seepage is stopped and does not progress. This is normal and does not require a part replacement, clean off the dried coolant…
• 10225747Oct 6, 2022Electrical system. Some customers may comlpain 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.
• 10225720Oct 4, 2022Electrical system. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
• 10225771Oct 3, 2022Transmission and drivetrain, Engine cooling. Some vehicles may have a "OW ENGINE OIL LEVEL" warning message and a CHECK ENGINE light illuminated in the instrument cluster with DTC P250F:00 stored in memory, and the oil level has actually decreased to near low. * DTC P250F:00 - Engine oil level signal: engine oil level low This is caused by an oil consumption increase due to damage of the valve seals on the exhaust side. To eliminate this concern, the design…
• 10222563Sep 29, 2022Electrical system. The Blind Spot Monitoring (BSM) system can malfunction with the following symptoms if the rear side radar sensors are installed facing the wrong direction. - BSM system indicates vehicle on the opposite side. - i-ACTIVSENSE indicator ring will not turn green - Rear Cross Traffic Alert (RCTA) does not work - Rear side radar sensor
• 10222572Sep 28, 2022Electrical system. Some vehicles may experience the MyMazda App not communicating to the vehicle properly which may result in the condition monitor information is not refreshed or remote door lock/unlock not functioning. This is caused by a failure in communication between the telematics communication unit and the MyMazda App. To correct this issue, the control software of the telematics communication unit has been modified.
• 10222564Sep 26, 2022Transmission and drivetrain. Some customers may experience a squeaking noise may be heard from the exhaust manifold when the idle speed drops from fast idle to normal idle speed during cold start. This is caused by a variable valve being stuck in the closed position. When returning from fast idle to normal, the stuck valve suddenly opens due to thermal change around it which causes abnormal noise. To eliminate this concern, the internal design…
• 10222565Sep 23, 2022Electrical system. 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.
• 10222566Sep 13, 2022Air 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.
• 10222553Sep 8, 2022Electrical system. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
• 10222577Sep 1, 2022Electrical system. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA04_12002 or later).
• 10219229Aug 25, 2022Electrical system. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
• 10219228Aug 25, 2022Electrical system. 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. - Remote function(s) inoperative. - Engine Start / Stop - Door Lock / Unlock - Lights ON / OFF - MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Confirm the customer's phone and vehicle have good to strong…
• 10218766Aug 24, 2022Electrical system. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA01_12002 or later).
• 10218777Aug 23, 2022Body and structure. 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 are present.
• 10218737Aug 23, 2022Electrical system. Some customers may complain about a fuel gauge that fluctuates to a higher level at a stop on inclines, even after a long drive since it was fully refilled. This is caused by improper control software of the body control module (BCM). To eliminate this concern, the control software of the BCM has been modified.
• 10218775Aug 17, 2022Suspension. Some vehicles may exhibit a rattle noise from the front suspension when driving over bumps or on a road with a wavy surface
• 10218769Aug 17, 2022Electrical system. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Ver. 7000C0A-NA06_12012 or later).
• 10218733Aug 17, 2022Electrical system. Some vehicles may experience the MyMazda App not communicating to the vehicle properly which may result in the condition monitor information is not refreshed or remote door lock/unlock not functioning. This is caused by a failure in communication between the telematics communication unit and the MyMazda App. To correct this issue, the control software of the telematics communication unit has been modified.
• 10218772Aug 11, 2022Equipment. This information will give you the necessary knowledge to respond to customers concerns of Smart Brake Support (SBS) unintended braking. By educating the customer on the system operation, it should reduce their anxiety or distrust of the vehicle.
• 10218768Aug 11, 2022Electrical system. Some customers may complain that Mazda Connect does not start or that it takes a long time to restart 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 of the CMU has been improved.
• 10218727Aug 8, 2022Latches, locks and linkages. Some CX-5 and CX-30 customers may find that the liftgate does not close when pressing the power liftgate (PLG) rear switch located on the interior liftgate trim. This may be caused by PLG switch corrosion. Water from a high pressure car washer and/or condensation may drip onto the switch connector and cause corrosion. To eliminate this concern, the PLG rear switch has been modified with a waterproof connector.
• 10218730Aug 3, 2022Electrical system. When replacing the body control module (BCM), some ECUs may need reprogramming. Without reprogramming the concerned ECUs, the power saving function may not work properly.
• 10218770Aug 1, 2022Visibility (wipers, defrost, mirrors). Some customers may complain that their interior rear view mirror fell off and/or will not stay in place after it is reinstalled. This is due to some mirrors having lower tension on the retaining clips. To eliminate this concern, there was a change in production
• 10218719Aug 1, 2022Latches, locks and linkages. Some customers may complain that their liftgate does not open. This can mean a range of things, from the liftgate not unlatching to the power liftgate (PLG) not opening automatically. If you confirm that the customer's concern is that the liftgate does not unlatch correctly, follow the repair information below
• 10218684Aug 1, 2022Brakes. A customer may complain that they have a brake squeal at the rear brakes.
• 10217205Jul 27, 2022Equipment. Some vehicles may exhibit the trim peeling off the EPB (Electronic Parking Brake) or power window switches.
• 10215253Jun 27, 2022Forward collision avoidance, Equipment. 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). FSC dynamic aiming is completed if the following conditions are met: 1.
• 10215274Jun 22, 2022Electrical 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.
• 10215246Jun 15, 2022Exterior lighting. Some customers may report hearing noise from their headlamps. While some noise is normal from the electric motor, if it is louder in one headlamp than the other or both are significantly louder than a known good vehicle, follow the steps below to repair.

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