2018 Mazda MAZDA3 Technical Service Bulletins

462 technical service bulletins (TSBs) are on record for the 2018 Mazda MAZDA3. 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.

• 10169509Dec 5, 2019Engine cooling, Transmission and drivetrain. GUIDE LINES AND PHOTOS TO DETERMINE IF FLUID/OIL SEEPAGE OR LEAK IS SEVERE ENOUGH TO REQUIRE WARRANTY REPAIR OR TO CLEAN AND MONITOR. Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked. For this concern, inspect the vehicle for any trace of a fluid or oil leak and use the following examples as a guide to determine if it is severe enough to require a…
• 10168785Nov 26, 2019Engine cooling. Some vehicles may exhibit oil leakage from the drive belt auto tensioner and rattling noises from the engine compartment. This may be caused by insufficient sealing at the drive belt auto tensioner damper when the auto tensioner fully operates under both high ambient temperature and high load conditions. To eliminate this concern, the shape of the drive belt auto tensioner damper has been changed.
• 10168139Nov 20, 2019Electrical system, Equipment, Engine cooling. Some customers may complain about:  Intermittent engine no start  Instrument cluster red security indicator light ON  Engine Start/Start Button Amber indicator light flashing  Battery discharge  Electrical relay buzzing noise  DTC B13D3:94 (Communication error with remote transmitter) stored.This may be caused by:  A key in a purse near a cell phone. The cell phone radio…
• 10168118Nov 20, 2019Equipment, Engine cooling, Electrical system. Some customers may complain about a Mazda Mobile Start (MMS) system malfunction. Use the information below to troubleshoot the customers complaint:  MAZDA MOBILE START (MMS) TROUBLESHOOTING GUIDE  CANNOT COMMUNICATE WITH VEHICLE  ERROR MESSAGE INSTALLED ON ANDROID DEVICES  COMMUNICATION ERRORS  MMS CHECK MODE - Use to verify system operation (see below).
• 10168119Nov 14, 2019Equipment, Wheels. On May 1, 2018, Japan produced vehicles starting using 17 mm hex lug nuts instead of 21 mm on the same size thread. When installing new lug nuts or the accessory Wheel Lock Set, make sure to use the appropriate part number for the vehicle you are working on. NOTE: The Mazda3 produced in Mexico is not affected. Use the GEPC or the Mazda Accessory web site [MXConnect (dealers.mazdausa.com)] to look up the correct…
• 10168098Nov 14, 2019Equipment, Engine cooling. Some customers may complain about a vibration through the driver and passenger seats at idle in (D)rive and (R)everse when the engine rpm drops down to 550. This vibration is caused by: 1.5L The No.3 and No.4 engine mount rubber hardening during vehicle usage at high ambient temperatures which decreases the damping force.
• 10168072Nov 4, 2019Equipment, Engine, Electrical system. Some customers may complain about poor heater performance even after the engine reaches normal operating temperature. This may be caused by a plugged heater core. For 2014-2016 Mazda6 and 2013-2016 (US spec) / 2017 (Mexico spec) CX-5, the CHECK ENGINE light may turn on with DTC P011A:00 (ECT sensor No.1/No.2 performance problem) stored at the same time. NOTE: Refer to TSB 01-015/15 if the customer is using a block…
• 10166848Oct 8, 2019Engine cooling. Some customers may complain about high engine oil consumption. Before attempting any repairs, verify the complaint by using the guideline below to determine if an engine repair is necessary:
• 10165676Sep 30, 2019Engine 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.
• 10165653Sep 24, 2019Brakes. Some vehicles may exhibit a rattle / knock noise from the front disc brake caliper (1) when driving on a rough road surface.This is caused by the slide pin (1) hitting the mounting support (2) due to insufficient holding power of the dust boots (3) when a shock (4) is applied from the road. To eliminate this concern, the dust boots have been modified to increase holding power.
• 10165350Sep 6, 2019Body and structure, Engine cooling. 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.
• 10164267Aug 23, 2019Engine cooling. Some vehicles may experience a rough idle with the check engine light on and DTC P0015 / P0524 stored in memory. P0015:00 - Exhaust CMP timing over-retarded. P0524:00 - Engine oil pressure too low. This is caused by a drop in engine oil pressure due to a piece of foreign object stuck on the oil pump pressure relief valve or oil control valve (OCV). The temporary entry of the foreign object triggers a check engine…
• 10163825Aug 7, 2019Exterior lighting, Brakes, Electrical system, Visibility (wipers, defrost…. Some customers may experience one or more electrical malfunctions after a vehicle body repair. The newly painted fender stay (2) may be causing a poor front harness (1) ground connection.The front fender stay (2) newly painted surface at ground point (3), where attachment bolt (4) is seated, may create a poor front harness ground connection. Customers concern can be resolved by sanding off paint at ground point (3)…
• 10163334Jul 31, 2019Equipment. The database error discovered with IDS 114.00-114.02 release has been fixed with IDS 114.04 release and is now available for download.
• 10163327Jul 30, 2019Forward collision avoidance. 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…
• 10163356Jul 26, 2019Electrical system, Equipment. Some customers may complain about incorrect MAZDA CONNECT clock time. This may be caused by an incorrect clock GPS Sync setting.
• 10163367Jul 16, 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 available…
• 10163404Jul 12, 2019Visibility (wipers, defrost, mirrors), Body and structure. Some vehicles may exhibit the cushion tape (1) attached to the front end of dashboard coming off and showing at the base of the windshield. This is caused by the cushion tape peeling off from the end(s) due to interference with the windshield and vehicle vibration (CX-5/Mazda6) or from the gap between the dashboard and the cushion tape because there there is no rib (1) at the dashboard ends (Mazda3).
• 10163333Jul 9, 2019Equipment, Electrical system. Due to a database error discovered with IDS 114.00-114.02 release (which affects Recall 3719F), it will be necessary to uninstall IDS 114 and install IDS 113.00 and 113.06 update. The Recall can be performed after removing IDS 114 and installing IDS 113. This SA will be updated when more information is available.
• 10162027Jun 25, 2019Equipment. ACCESSORY INSTRUCTIONS LOCATION: Accessory instructions can be found in the Accessory eCatalog. https://ecatalog.trademotion.com/
• 10162018Jun 17, 2019Seats. Some vehicles may exhibit a condition where the front seat cushion trim comes off the seat frame at the front end. This may be found on vehicles with all types of the seat trims (leather, leatherette and fabric). The front seat cushion is attached to the seat frame using folding collars.This is caused by the collars slipping out of the seat frame when an excessive force is applied to the seat cushion.
• 10162014Jun 6, 2019Electrical system, Equipment. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 70.00.335C or later). NOTE:For 2016 CX-9 with version earlier than 59.00.441, the tachometer function will be removed from the Active Driving Display as part of Mazda’s continuing efforts to improve safety and reduce driver distraction. Please explain this to the customer before updating the…
• 10160555May 20, 2019Transmission 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). P0842:00 - Oil pressure switch No. 1 (oil pressure switch B) stuck on P0847:00 - Oil pressure switch No. 2 (oil pressure switch A) stuck on P0872:00 - Oil pressure switch No. 3 (oil pressure switch A) stuck on P0877:00 - Oil…
• 10160551May 2, 2019Engine cooling. Some vehicles may experience a lack of power and the check engine light on with DTC P61B:00 stored in the PCM memory when driving in high temperatures at high elevations. DTC P061B:00 - [PCM] Internal control module torque calculation performance problem This concern may be caused by improper PCM control logic. The engine torque calculation error may increase in high temperatures at high elevations. To eliminate…
• 10160575May 1, 2019Equipment, Electrical system, Back-over prevention (rear camera). Some customers may complain about a MAZDA CONNECT system reboot or blank screen. Use the flowchart below to repair the vehicle.
• 10159204Apr 8, 2019Suspension, Wheels. There have been warranty claims submitted for noise in differentials, transfer units and transmissions where the source of the noise was a wheel bearing. This misdiagnosis can lead to multiple repair attempts, warranty debits, and additional inconvenience and/or cost to the customer. To reduce the chance of this occurring, please follow the steps outlined in the repair procedure.
• 10159198Apr 5, 2019Equipment, Electrical system. Apple carplayã¢â„⢠/ android autoã¢â„⢠frequently asked questions (faq)
• 10159199Apr 4, 2019Equipment. On May 1, 2018, Japan produced vehicles starting using 17 mm hex lug nuts instead of 21 mm on the same size thread. When installing the accessory locking lug nuts, make sure to use the appropriate part number for the vehicle you are working on.
• 10159196Apr 4, 2019Wheels. On May 1, 2018, Japan produced vehicles starting using 17 mm hex lug nuts instead of 21 mm on the same size thread. When installing new lug nuts or the accessory Wheel Lock Set, make sure to use the appropriate part number for the vehicle you are working on.
• 10159201Apr 1, 2019Equipment. MAZDA IDS INOPERATIVE WITH VCM-II LICENSE EXPIRATION MESSAGE - If you encounter an IDS inoperative problem with VCM-II license expiration message, follow the instructions below: 1. CLICK HERE to download the resetting tool to your PC desktop. 2. Reboot your PC, DO NOT start any application after restarting. 3. Run the resetting tool by double clicking the "Reset.bat" file (on your desktop from step 1). 4. Press any…
• 10155442Mar 27, 2019Equipment, Electrical system. APPLE CARPLAY™ / ANDROID AUTO™ FREQUENTLY ASKED QUESTIONS (FAQ). Many frequently asked question and the answers.
• 10155441Mar 27, 2019Body and structure. Some customers may complain that the rear door seaming welt (1) comes off when stepping in and/or out of the vehicle. This is caused by the gripping force of the seaming welt being insufficient for frequent usage of the rear seat (vehicle used for ride sharing). No mass production change is planned.
• 10155437Mar 27, 2019Transmission and drivetrain. Some customers may complain of a whining noise from the automatic transaxle when driving at 10 mph and above. The noise: Depends on the vehicle’s speed only (the more speed, the more noise)Occurs with all types of driving (acceleration, deceleration, steady speed)Does not depend on rpm, gear, or ATF temperature.This is caused by a damaged bearing in the transaxle due to improper configuration…
• 10155440Mar 22, 2019Exterior lighting, Equipment, Lane departure, Brakes, Forward collision…. Some customers may experience a SBS/SCBS, LAS/LDWS and/or HBC warning light on. A system error message may also be found in the center display. DTC U3000:04-0A (Forward sensing camera (FSC) internal malfunction).Master Warning Light, Smart Brake Support/Smart City Brake Support (SBS/SCBS) Indicator Light, Lane-keep Assist System (LAS) Lane Departure Warning System (LDWS) Warning Light, High Beam Control (HBC)…
• 10155436Mar 22, 2019Transmission and drivetrain. Some vehicles may exhibit a squeak noise from the right front driveshaft at the automatic transaxle when driving. This concern is likely to occur when driving at speeds between 37-50 mph (60-80 km/h) with the ATF at normal operating temperature. The noise is caused by stick/slip between the oil seal at the transaxle and the dust cover of the driveshaft. To correct this issue, the thickness of the dust cover has…
• 10155435Mar 22, 2019Engine, Transmission and drivetrain. Some vehicles may experience a lack of power and the check engine light on with DTC P61B:00 stored in the PCM memory when driving in high temperatures at high elevations. DTC P061B:00 - [PCM] Internal control module torque calculation performance problem.This concern may be caused by improper PCM control logic. The engine torque calculation error may increase in high temperatures at high elevations. To eliminate…
• 10154879Mar 20, 2019Engine cooling, Fuel system, Equipment. In support of the new MRT distribution, Mazda will ship to dealers a new Dual Purpose Diagnostic Leak Detector beginning March, 2019. Training videos will be posted to MGSS shortly and Workshop Manual procedures will be revised gradually.
• 10154529Mar 15, 2019Exterior lighting. Some customers may complain of condensation/fog inside the front (headlamp/headlight) or rear (taillamp/taillight) combination lights. The recent new models have been fitted with a clear lens which can cause the symptom to be more noticeable, however, it does not affect the performance of the light. This condensation/fog is a natural phenomenon that occurs when there is a fairly large temperature difference between…
• 10154450Feb 15, 2019Electrical system. When pressing the START/STOP button in very cold weather, the ignition may not turn off on some vehicles equipped with a lock release button (1) on the selector lever knob. Although the selector lever is in the "P" position and the engine shuts off normally, the ignition may stay on (in accessory mode). NOTE: This TSB only applies if the selector lever knob is BHN2-46-030* or BHN4-46-030* with the lock release…
• 10154452Feb 5, 2019Electrical system. Some customers may experience one or more electrical malfunctions after a vehicle body repair. The newly painted fender stay (2) may be causing a poor front harness (1) ground connection.
• 10154457Feb 4, 2019Electrical system. Some customers may complain about a MAZDA CONNECT system reboot or blank screen. Use the flowchart below to repair the vehicle.
• 10154454Feb 4, 2019Electrical system. Some customers may experience a SBS/SCBS, LAS/LDWS and/or HBC warning light on. A system error message may also be found in the center display. DTC U3000:04-0A (Forward sensing camera (FSC) internal malfunction). DTC U3000:04-0A (Forward sensing camera (FSC) internal malfunction) is stored in the FSC module and cannot be erased. This concern may be caused by an internal FSC failure. To eliminate this concern, the…
• 10153337Jan 29, 2019Equipment. Some vehicles may exhibit a Connectivity Master Unit (CMU), a BLUETOOTH® hands-free unit or text messaging related concerns. To improve the handling of BLUETOOTH® hands-free and/or text messaging customer concerns, Mazda created a special service and parts exchange program as of February 2010. Customers experiencing related concerns should have their vehicle and/or device inspected according to the following…
• 10153314Jan 24, 2019Engine. When the engine is started for the first time after parking the vehicle overnight in cold conditions (below 32 degrees Fahrenheit / 0 degrees Celsius), some vehicles may exhibit a rough idle and/or the check engine light on with any of the following DTC(s) stored in memory. P0300 - Random misfire detected P0301 - Cylinder No. 1 misfire detected P0302 - Cylinder No. 2 misfire detected P0303 - Cylinder No. 3 misfire…
• 10153303Jan 24, 2019Equipment. Apple carplay? / android auto? Frequently asked questions (faq)
• 10153318Jan 23, 2019Steering. Some customers may complain that the steering wheel is off center more than 3° even when driving straight on a flat road.
• 10153339Jan 14, 2019Electrical 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 manufactured with…
• 10153338Jan 14, 2019Body 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 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.
• 10153336Jan 14, 2019Equipment. Some vehicles may exhibit a Connectivity Master Unit (CMU), a BLUETOOTH® hands-free unit or text messaging related concerns. To improve the handling of BLUETOOTH® hands-free and/or text messaging customer concerns, Mazda created a special service and parts exchange program as of February 2010. Customers experiencing related concerns should have their vehicle and/or device inspected according to the following…
• 10153335Jan 14, 2019Seats. At PDI or when new vehicle is delivered, some customers may complain about wrinkles on the leather seat cushion and/or seat back surface.

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