WenmarOpen by Wenmar Pro

Service bulletins for the 2021 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
RF-23-012023-02-02. Service bulletin. ENGINE AND ENGINE COOLING. When servicing SKYACTIV engine vehicles requiring to replace the Oil Galley Plug and Crush Washer, order the required part numbers below. These parts are not listed in GEPC and were previously listed as "non-serviceable" in the cylinder block diagram.
SA-078-222023-01-05. 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.
SA-045-22a2023-01-05. Service bulletin. EQUIPMENT; VISIBILITY:GLASS, SIDE/REAR. The purpose of this Service Alert is to remind dealers to keep the protective films on the piano black door garnishes attached until just before delivering the vehicle to the customer. The protective films are attached on new vehicles when shipped from the factory in order to avoid being scratched during transportation and while in dealer stock.
SA-019-22c2023-01-05. Service bulletin. ELECTRICAL SYSTEM. MAZDA CONNECTED SERVICES Frequently Asked Questions (FAQ)
SA-017-22d2023-01-05. Service bulletin. ELECTRICAL 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 reception during the concern as shown in the table below. * If the reception is weak, move the vehicle to a location where the reception is good to strong as shown in the table, then try to get the Authorization Code and/or operate the remote functions before proceeding to the Repair Procedure if there is still an issue. * If the reception is good to strong, proceed to the Repair Procedure
SA-016-22a2023-01-05. Service bulletin. EQUIPMENT. There are currently 2 methods for cutting a new auxiliary key blank. A. Auxiliary Key Trace Cut Method B. Auxiliary Key Code Cut Method
SA-004-22g2023-01-05. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
RF-22-022023-01-05. Service bulletin. WHEELS. Following the release of the 2019 CX-5 (KF) a series of wheels are applicable from the 2019-2021 model year. Each wheel is specified by VIN and supplier code, see table below for a visual representation along with the part number.
MT-004-222023-01-05. Service bulletin. ENGINE AND ENGINE COOLING. Some vehicles may experience the Check Engine Light ON with DTC P0171 (Fuel Trim too Lean) and possibly DTCs P030X (Misfire). Vehicles having this concern should use the following Inspection/Repair procedure.
SA-075-222022-12-02. Service bulletin. 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 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 DLC-2 (battery discharge/DTC stored) 2. Cell phone charger/accessory in 12V socket (engine no start or unable to turn off) 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored) 5. Non-certified USB cable (Apple Carplay™/ Android Auto™ will not connect) 6. Over-sized wheels/tires (incorrect GPS location)
SA-074-222022-12-02. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; 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.
SA-064-22a2022-12-02. Service bulletin. ELECTRICAL 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.
16-004-22a2022-12-02. Service bulletin. ELECTRICAL 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.
15-002-22a2022-12-02. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may exhibit either or both of the following symptoms. 1. The SCBS warning light is illuminated with DTC U045A:68 [FORWARD SENSING CAMERA (FSC)]. U045A:68 Error signal received from parking assist unit 2. The parking sensor indicator is flashing with one or more of the following DTCs of PARKING ASSIST SYSTEM. B1B36:14 Front corner ultrasonic sensor (RH) circuit malfunction B1B36:2A Front corner ultrasonic sensor (RH) characteristic malfunction B1B38:14 Front ultrasonic sensor (RH) circuit malfunction B1B38:2A Front ultrasonic sensor (RH) characteristic malfunction B1B40:14 Front corner ultrasonic sensor (LH) circuit malfunction B1B40:2A Front corner ultrasonic sensor (LH) characteristic malfunction B1B42:14 Front ultrasonic sensor (LH) circuit malfunction B1B42:2A Front ultrasonic sensor (LH) characteristic malfunction Due to insufficient waterproof performance of the front harness short cords (1), water may enter in and accumulate in the C-11 (LH) or C-12 (RH) connectors (2) causing a short circuit between wires and an improper signal being sent from the parking (ultrasonic) sensor to the parking sensor unit. To eliminate this concern, the production process of the front harness short cord has been improved to increase waterproof performance.
09-018-22b2022-12-02. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 74.00.324 or later). The system performance has been improved as follows: Ver. 74.00.324 fixes these software errors (bugs): * If the shift lever is operated quickly while displaying the CarPlayTM screen, the rear view screen may not return to the CarPlayTM screen. * When the gear position is shifted into P from R, the screen may not return to the previous condition before shifting into the R position.
04-004-222022-12-02. Service bulletin. SERVICE BRAKES. Front Brake Noise Symptom 1: Some vehicles may exhibit a click noise when first moving forward or reverse from a stop OR when first applying the brakes while moving forward at slow speeds. This is caused by deteriorated grease between the brake pads and the shim, the front brake pads move upward/downward along with the brake rotors during brake application. When the vehicle moves or the brakes are applied the next time, the front brake pads move to the other side, which causes a click noise. Front Brake Noise Symptom 2: Some vehicles may exhibit the brakes having an unusual noise or vibration when applying the brake. This is caused by rust on the brake disk plate's surface. Rear Brake Noise Symptom 1: Some vehicles may exhibit a squeak noise from the rear brakes while braking lightly and occurs more frequently when driving at slow speeds. The noise is caused by poor contact between the guide plate and the mounting support. To eliminate this concern, the material of the pads has been changed to copper-free and the specification of the shims has been changed to a coated spring with tape. Rear Brake Noise Symptom 2: Some vehicles equipped with an electric parking brake (EPB) may exhibit a grinding noise from the rear brakes when braking. This may be caused by the rear brake pads not having the capability to remove the rust from the rear brake discs. The red rust accumulated on the discs is exposed to high temperatures during braking, and consequently the rust turns black. As the black rust is too hard to be removed by the brake pads, the rust progress is accelerated, resulting in the grinding noise.
01-011-22a2022-12-02. Service bulletin. ENGINE AND ENGINE 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 of these valve seals has been modified.
02-004-22a2022-12-02. Service bulletin. SUSPENSION. Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow the inspection guidelines below to determine if the condition is a result of the normal sweeping process or a failure of the shaft seal.
01-013-222022-11-04. 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 NOTE: * Vehicles with SKYACTIV-G 2.5T are not applicable. * If DTC P2B61:00 (Coolant control valve circuit range/performance) accompanies, this information is not applicable. Diagnose according to the instructions in MGSS. Due to production variety of the failsafe thermostat integrated in the coolant control valve, engine coolant may enter into a dry hollow in the failsafe thermostat, resulting in unintended opening of the failsafe thermostat at lower temperatures (104-176 °F (40-80 °C)). To eliminate this concern, the production process of the coolant control valve has been modified.
01-012-222022-11-04. Service bulletin. ENGINE AND ENGINE 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 from around the pipe with a wire brush.
01-011-222022-11-04. Service bulletin. POWER TRAIN; ENGINE AND 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 of these valve seals has been modified.
SA-068-222022-11-04. Service bulletin. POWER TRAIN. 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.
SA-067-222022-11-04. Service bulletin. ELECTRICAL 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, 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).
SA-066-222022-11-04. Service bulletin. ELECTRICAL 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 vehicles built after March 2, 2019] 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: In most cases, no dealer visit is necessary.
SA-065-222022-11-04. Service bulletin. ENGINE AND ENGINE 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.

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