2019 Mazda CX-9 Technical Service Bulletins

394 technical service bulletins (TSBs) are on record for the 2019 Mazda CX-9. 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.

• 10179172Aug 20, 2020Engine cooling. A new cylinder head assembly for service parts has been newly established for SKYACTIV-G 2.5 with cylinder deactivation when replacement is needed. Valves, valve springs, valve spring seats, and cotters (IN/EX) are included in the new assembly. NOTE: Cylinder head replacement requires MASH authorization.
• 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…
• 10179154Aug 7, 2020Electrical system. Some customers may complain about an inoperative power liftgate (PLG) and the any of the following DTC's stored in memory:  U3003:16 (Power liftgate (PLG) control module power supply voltage low input)  U3003:17 (Power liftgate (PLG) control module power supply voltage high input). This may be caused by low or high vehicle battery voltage.
• 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.
• 10177931Jul 31, 2020Electrical system, 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.
• 10177845Jul 21, 2020Steering, Electrical system. Some customers may complain of a steering wheel vibration (in a rotational direction), when they are not holding onto the steering wheel. The vibration stops when holding onto the steering wheel or when driving. This may be caused by improper control logic of the EPS control module. To eliminate this concern, the EPS control logic has been modified.
• 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).
• 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.
• 10177843Jul 9, 2020Engine, Equipment, Transmission and drivetrain. Some vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738). This is caused by the oil pressure switch A and/or B at the control valve body temporarily or permanently getting stuck due to contamination entering the passage. To correct the problem, some mass production changes have been…
• 10176983Jun 26, 2020Body and structure. Some customers may notice cracks (as shown below) at one or both ends of the front bumper near the front fender / front combination light. This may be caused when driving over bumps. The bumper fascia may receive higher than expected forces, depending on driving manner and road conditions. To eliminate this concern, the internal shape and material of the front bumper fascia has been modified.
• 10177005Jun 11, 2020Equipment. Use the symptom troubleshooting tables below to diagnose MAZDA CONNECT concerns.
• 10177012Jun 10, 2020Transmission and drivetrain. When replacing manual or automatic transmission, make sure to remove the plug from the old transmission (as shown below) and then re-install it to the new transmission with a new washer. The new transmissions (including remanufactured A/T) have a shipping plug, as shown in the figures (M/T: black, rubber made; A/T: pink and black, with breather). This plug is for shipping use only and needs to be removed in order…
• 10176039May 1, 2020Equipment. Some customers may complain that the rear console / cup holder area is warming. The warming is caused by heat radiating from the rear heater core, which is located under the console. The warm air created by the heater core escapes through small gaps and carries heat along the inner walls of rear console / cup holder, causing an increase in temperature.
• 10174692Apr 30, 2020Engine 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.
• 10174690Apr 28, 2020Transmission and drivetrain. 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.
• 10173099Mar 19, 2020Brakes, Equipment. Some vehicles may exhibit a click or squeak noise from the front brakes under the following conditions: Click Noise: 1. When first moving forward or reverse from a stop OR 2. When first applying the brakes while moving forward at slow speeds. Squeak Noise: During light braking.
• 10173097Mar 12, 2020Transmission and drivetrain, Equipment, Brakes, 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.
• 10173253Mar 11, 2020Equipment, Electrical system. Some customers may complain about incorrect MAZDA CONNECT clock time. This may be caused by an incorrect clock GPS Sync setting.
• 10173098Mar 6, 2020Brakes, Equipment. Some vehicles may exhibit a click noise from the front brakes under one of the following conditions:  When first moving the vehicle forward or reverse from a stop.  When first applying the brakes while the vehicle is moving forward at slow speeds. Due to deteriorated grease between the brake pads and the shim, the front brake pads move upward/downward along with the brake rotors during brake application.
• 10173228Mar 4, 2020Equipment. 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.
• 10173249Mar 3, 2020Forward collision avoidance, Equipment. 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…
• 10171833Feb 27, 2020Equipment. 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…
• 10171843Feb 26, 2020Wheels. 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.
• 10171792Feb 26, 2020Transmission and drivetrain. 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.
• 10171845Feb 20, 2020Brakes. Some vehicles may exhibit a click noise from the front brakes under one of the following conditions: When first moving the vehicle forward or reverse from a stop. When first applying the brakes while the vehicle is moving forward at slow speeds. Due to deteriorated grease between the brake pads and the shim, the front brake pads move upward/downward along with the brake rotors during brake application.
• 10171844Feb 20, 2020Brakes. 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…
• 10171780Feb 18, 2020Electrical system, Equipment. Some customers may complain about a MAZDA CONNECT system reboot or blank screen. Use the troubleshooting chart below to repair the vehicle.
• 10171848Feb 13, 2020Visibility (wipers, defrost, mirrors). Some vehicles may exhibit power outer mirror(s) that do not fold in and/or out when using the outer mirror switch. This concern may be caused by insufficient water tightness, allowing water to enter the electric folding unit resulting in corrosion damage. To eliminate this concern, the overlapping area (1) of the water-proof seal (inside electric fold-in unit) has been extended.
• 10171787Feb 11, 2020Equipment. 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.
• 10171785Feb 6, 2020Engine cooling, Equipment, Electrical system. If you encounter sputtering, surging or poor driveability with the following DTCs stored, inspect the MAP sensor connection for corroded terminals (as shown below). Recommend replacing the engine wire harness and MAP sensor. Refer to GEPC for applicable part numbers.
• 10170941Jan 29, 2020Brakes. 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.
• 10170940Jan 29, 2020Equipment, Seats. Due to a vehicle side logic change for the vehicles listed above, the seat warming and seat ventilation systems will no longer automatically turn on when the vehicle is started using the MMS accessory. Both features will now require a manual setting every time the vehicles are restarted after being turned off. Refer to the vehicle owner’s manual for more details on proper seat warmer/seat ventilation operation.
• 10170942Jan 23, 2020Seats. 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.
• 10170814Jan 23, 2020Steering. Some customers may complain that the steering wheel is off center more than 3° even when driving straight on a flat road. Customers having this concern should have their vehicle repaired using the following repair procedure.
• 10170813Jan 23, 2020Equipment, Electrical system. Some vehicles may experience the CHECK ENGINE LIGHT ON with DTC P2610 and P2507 stored in memory after engine start and room fuse 15A (A) removed. P2610:00: Instrument cluster internal engine off timer performance problem  P2507:00: PCM battery voltage low input. As a past malfunction, the customer will not notice it (no warning light illuminated), but the DTC may be found during a vehicle service…
• 10170943Jan 15, 2020Equipment, Electrical system. Some customers may complain about a MAZDA CONNECT system reboot or blank screen. Use the troubleshooting chart below to repair the vehicle.
• 10170829Jan 15, 2020Engine cooling, Electrical system, Body and structure. LACK OF POWER UNDER HEAVY LOAD WITH NO WARNING LIGHTS OR DTCS: Some customers may complain of a lack of power under heavy load without any warning lights or DTCs. This concern may be due to a loose or detached hood weatherstrip, which can cause a blockage or restriction in the air intake system.
• 10170819Jan 13, 2020Body and structure, Equipment. 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.
• 10170818Jan 13, 2020Seats. 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.
• 10170817Jan 13, 2020Equipment. When encountering a vehicle with paint damage, refer to the "Mazda Pocket Paint Guide" to determine cause, prevention, remedy, and warranty coverage (if applicable). Copies of the Mazda Pocket Paint Guide are available for order on Mazda e-Store (part number: 9999-95-MPPG-12).
• 10170663Jan 10, 2020Equipment, Engine. Some vehicles may exhibit a rattling noise from the front of the vehicle while driving. The noise may be caused by loose cowl panel bolts.
• 10170661Jan 9, 2020Equipment, Electrical system. In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer. NOTE: Tampering with a motor vehicle odometer is strictly prohibited by Federal, and State laws. It is the dealer’s responsibility to comply with Federal, State, and local laws concerning odometer and related documentation requirements when providing a repair or replacement.  Mazda vehicles are…
• 10170656Jan 9, 2020Suspension, Equipment. 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.
• 10170655Jan 9, 2020Suspension. Some vehicles may exhibit one or more of the following noises from the front suspension: 1. A creaking noise from under the front of the vehicle (front lower arm bushing) when driving over bumps at approximate 12 - 25 mph (20 - 40 Km/h). The noise occurs when the road surface is wet or after the vehicle has been washed. The noise becomes more noticeable as the bumps get higher. The creaking noise is caused by the…
• 10169505Dec 20, 2019Wheels. Some vehicles may exhibit corrosion of the wheel nuts. This is caused by torsional stress concentrating on the tip of the wheel nut because of the thin and long shape of the nut, which damages the coating and causes the corrosion. To correct this issue, the width across the flats of the wheel nuts have been changed from 17mm to 21mm.
• 10169542Dec 19, 2019Equipment, Electrical system. All Mazda Connect vehicles in new car inventory must be updated to the software version listed below in this TSB as part of the New Car Ready Step 3 process. Make sure the new vehicle specialist receives a copy of this bulletin. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 70.00.352 or later).
• 10169540Dec 19, 2019Equipment, Engine cooling. If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly, the replacement engine may fail prematurely. Metallic debris from the old engine (with catastrophic internal mechanical failure) may rest inside the intake manifold.
• 10169513Dec 18, 2019Other or unknown, Transmission and drivetrain. WARRANTY GUIDELINES FOR RETURNED TRANSMISSION CORES. Be advised that the Mazda Remanufactured Transmission Center (MRTC) has found that up to 30% of the returned transmission cores either included the wrong transmission oil cooler, or the oil cooler was missing altogether. IMPORTANT NOTE: ALWAYS REMEMBER TO INCLUDE THE ORIGINAL OIL COOLER WITH THE RETURNED TRANSMISSION CORE!
• 10169539Dec 17, 2019Equipment. 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…

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