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Service bulletins for the 2020 Mazda CX-5

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
SA-051-202020-06-02. Service bulletin. VISIBILITY:WINDSHIELD. Some vehicles may experience an engine no start/no crank with either of the following DTC's stored: P0615:12 - Starter relay circuit malfunction B112A:12 - IG2 relay circuit malfunction. This may be caused by water contamination/corrosion at electrical connector C-04 due to: Windshield tint installation: Windshield tint installed to block UV light. The water used during the installation of the tint may run down behind the dashboard. Carefully inspect the windshield to see if window tint has been installed or not. Some window tint film appears clear and is for UV light only. Windshield repair/replacement: Poor windshield sealing during installation can cause an internal water leak. Water may run down behind the dashboard.
SA-004-20a2020-06-02. Service bulletin. EQUIPMENT. 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.
SA-049-202020-05-05. Service bulletin. ENGINE AND ENGINE COOLING. Some customers may experience an engine no start due to low battery voltage. Mazda is aware of the issue and is working on a solution. NOTE: Battery parasitic draw is intermittent. When the condition is present, battery parasitic draw exceeds 65 mA (0.065 A) 40 minutes after key OFF. Contact Hotline for latest repair information.
SA-047-202020-05-05. Service bulletin. POWER TRAIN. 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.
SA-040-20a2020-05-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT. 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. IMPORTANT: • The engine will not start unless the key transmitter is held over the Start Stop button. • Outside door handle lock/unlock touch sensor is inoperative. • Key transmitter indicator lights are inoperative.The key transmitter control functions (i.e. locking/unlocking door, etc.) are operational when pressing the transmitter switches, even while the key power saving function is turned ON.
09-019-20-36862020-05-04. Service bulletin. EQUIPMENT; LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. Some customers may find that the liftgate does not close when pressing the power liftgate (PLG) rear switch (A) located on the interior liftgate trim. This may be caused by PLG switch corrosion. Water from condensation may drip onto the switch connector and cause corrosion.
08-001-20-36962020-05-04. Service bulletin. AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Some customers may experience the airbag warning light ON with DTC B00A0:09 stored in the SAS control module memory when the battery voltage is low. DTC B00A0:09 (Occupant classification sensor internal signal output unstable). This concern is caused by the low voltage detection time of the occupant classification sensor (OCS) being too short during cranking, which causes detection of the DTC unnecessarily. The concern occurs more often in colder weather when greater electric current is consumed to start the vehicle. To eliminate this concern, the OCS has been modified to avoid unnecessary DTC detection. NOTE: Even if the voltage is recovered after the engine is started, the airbag warning light stays ON during the drive cycle. When the battery voltage becomes stable after the engine is started, the airbag system will operate normally.
01-007-20-36912020-05-04. Service bulletin. ENGINE AND ENGINE COOLING. Some vehicles may exhibit engine overheating and poor A/C performance with DTC P111A:00 stored in memory. • DTC P111A:00 - Engine coolant temperature is high. NOTE: If the concern occurred during high speed driving, this Service Information is not applicable. Diagnose concern according to MGSS online. This concern may be due to improper control module software, which causes the cooling fan to run improperly, resulting in high coolant temperature. The fan control module is integrated into the cooling fan component.
01-006-20-36952020-05-04. Service bulletin. ENGINE AND ENGINE COOLING. Some vehicle may exhibit a tapping noise from the engine during idling; etc., and synchronized to the engine rpm. The tapping noise may be caused by the switchable hydraulic lash adjuster (HLA), which may not work properly due to air bubbles accumulated in the oil passage in it.
SA-041-202020-04-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Some customers may complain about incorrect MAZDA CONNECT clock time. This may be caused by an incorrect clock GPS Sync setting.
SA-037-202020-04-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA. Some vehicles may have one of the following DTCs stored in memory: • C1001:92 - Forward sensing camera (FSC) poor field of view • B14F0:92 - General temporary failure in forward sensing camera (FSC) DTC C1001:92 or B14F0:92 set as a past record for low visibility of the Forward Sensing Camera (FSC). It does not mean there is an actual FSC defect. • In some cases the customer may have a concern with the Lane Departure Warning System (LDWS) and/or High Beam Control system (HBC). • In other cases this DTC might be found without a related customer concern. NOTE: Instrument Cluster Multi-Information Display Warning Messages vary depending on vehicle year/model. See the Owner's Manual for details.
SA-036-202020-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. The owner’s manual contains procedures and precautions for the maintenance and cleaning of plastic parts, like the brand emblem. However, it is still important to remind customers about these precautions. Customers should never use inadequate, harsh or aggressive cleaning products on plastic parts. CAUTION: Be aware that when cleaning the brand emblem, never use cleaning products that are highly acidic/alkaline detergent, organic solvents or those with aggressive chemical products, otherwise, the brand emblem may become cracked and/or deformed (as shown in the example below). Always refer customers to the owner’s manual for proper cleaning using cold or lukewarm water and a mild, neutral detergent.
SA-035-20a2020-04-06. Service bulletin. ENGINE AND 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.
DRW282020-04-03. Service bulletin. VISIBILITY; EQUIPMENT ADAPTIVE/MOBILITY. DRW28 - CHROME WINDOW MOLDING CONCERN FROM STRONG WIND DAMAGE - 2020 CX-5 AND CX-9
00-001-20-36892020-04-03. Service bulletin. SERVICE BRAKES, HYDRAULIC; POWER TRAIN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND 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.
04-003-20-36682020-02-29. Service bulletin. SERVICE BRAKES, HYDRAULIC. Some vehicles may exhibit grooves (1) in rear brake disc plate(s), as shown below. This concern is mostly found on new or low mileage vehicles, when the brakes are new. The grooves may be caused through abrasion from the accumulation of metal particles from the rear brake disc plates. The metal particles get caught between the brake pads and disc plates causing groove damage. To eliminate this concern, the disc plate surface honing process has been changed to reduce metal particle formation.
02-004-20-36852020-02-29. Service bulletin. WHEELS. 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.
SA-035-202020-02-29. Service bulletin. ENGINE AND 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.
SA-034-202020-02-29. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. DTC P0942:49 TROUBLESHOOTING: P0942:49 is missing from the Workshop Manual on MGSS. Follow the repair procedure below to repair the vehicle until the information is added to the Workshop Manual.
SA-032-202020-02-29. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT. SiriusXM Traffic Plus and Travel Link are displayed with Mazda in-vehicle factory navigation systems. Both of these services provide information in the U.S. & Canada. NOTE: SiriusXM Traffic Plus and Travel Link subscription is free of charge for 3 years only if equipped with factory installed navigation system. NOTE: 2019-2020 Mazda3 and 2020 CX-30 are not equipped with factory installed navigation system,however, it is available as a dealer installed accessory. SiriusXM Traffic Plus and Travel Link are available on the 2019-2020 Mazda3 and 2020 CX-30 Preferred Package and above, as a paid subscription. Traffic Plus feature requires in-vehicle navigation SD card. SiriusXM Satellite Radio trial subscription is free of charge for 3 months.
SA-030-202020-02-27. Service bulletin. POWER TRAIN. Service part Automatic Transaxles (ATX) manufactured on or after July, 2018 are shipped with a blank TCM that requires configuration. NOTE: The following Caution is included with every ATX that requires configuration.
SA-026-202020-02-27. Service bulletin. EQUIPMENT. Use the symptom troubleshooting tables below to diagnose MAZDA CONNECT concerns. Audio System, Bluetooth®, Center Dislay, DTC, i-ACTIVESENSE, Maintenance Monitor, Navigation, Noise, Reboot / Frozen Screen / Slow Response, USB / Aux Voice Command, How to Check Navi SD Card VIN Lock.
SA-011-20a2020-02-27. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. Some customers may complain about a MAZDA CONNECT system reboot or blank screen. Use the troubleshooting chart below to repair the vehicle.
SA-016-202020-02-04. Service bulletin. SEATS. Some customers may complain that their seat warmers or seat ventilation do not turn on when the engine is restarted after being left on when turning off the engine. The logic has changed from previous Mazdas where the seat warmers and seat ventilation automatically turned on when the engine was restarted. NOTE: Customers in cold weather are more likely to complain about this if their vehicle is equipped with Mazda Mobile Start (MMS) (not available on Mazda3 or CX-30) because the MMS accessory instructions state the seat warmers WILL turn on when the engine is restarted. The same can happen in the hotter weather with the seat ventilation. This information is incorrect for these vehicles. Both features will now require a manual setting every time the vehicles are restarted after being turned off. Consult the vehicle’s owner’s manual for more details on proper seat warmer/seat ventilation operation.
SA-019-202020-02-04. Service bulletin. SERVICE BRAKES, HYDRAULIC. Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.

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