2018 Mazda MAZDA6 Technical Service Bulletins

549 technical service bulletins (TSBs) are on record for the 2018 Mazda MAZDA6. 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.

• 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…
• 10169538Dec 17, 2019Electrical system, Equipment, Engine cooling. Some vehicles may exhibit engine overheating with one or more of the following symptoms:  “EXCESSIVE ENGINE TEMPERATURE: ENGINE OUTPUT WILL BE LIMITED” displayed in the instrument cluster  Red overheating indicator illuminated  Engine temperature gauge reading in the red zone (260°F / 126°C or more) NOTE: This condition usually happens when the vehicle is in stop and go traffic.
• 10169543Dec 13, 2019Equipment, Visibility (wipers, defrost, mirrors), Other or unknown. Accessory instructions can be found in the Accessory eCatalog. https://ecatalog.trademotion.com/. Audio/Electrical, Exterior, Interior: - Mazda Mobile Start (MMS) - Remote Engine Start - Wireless Charging Pad - Mirror - Navigation - Rear Parking Sensors - Rear Seat Entertainment - Smartphone Screen Mirroring - Bumper Trim/Guards - Door Mirror Caps - Fog Lights - Moonroof Wind Deflector - Roof Rack - Side Window…
• 10169537Dec 13, 2019Engine cooling, Equipment. There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole. This Service Bulletin is to inform you about the water pump sealing mechanism and the criteria if replacement is necessary or not.
• 10169509Dec 5, 2019Transmission and drivetrain, Engine cooling. 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, 2019Engine cooling, Equipment, Electrical system. 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, 2019Engine cooling, Electrical system, Equipment. 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…
• 10168068Nov 4, 2019Brakes. Some vehicles may exhibit a groan noise from the front brakes when braking at a very low speed (approximately 6 mph / 10 km/h). This may be caused by a brake torque variation at that speed due to an inappropriate machining process of the brake disc surface.
• 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.
• 10165675Sep 27, 2019Forward collision avoidance, Back-over prevention (rear camera), Electrical…. Some customer's may complain that In heavy rain, the front parking sensor system detects objects despite nothing being in front of the vehicle, and no related DTCs are stored. This may be caused by the ultrasonics diffusing inside when the front parking sensors get wet. As a result, the parking assist unit mistakenly detects objects near the front of the vehicle. To correct this issue, the detecting logic in close…
• 10165353Sep 20, 2019Engine cooling. If a customer comes in with the following concerns, contact Hotline for assistance. OIL PRESSURE WARNING light and/or the CHECK ENGINE light ON, DTC P055F and/or P0524 stored, No drivability concern or engine mechanical noise, Outside the VIN range in TSB 01-020/18.
• 10165350Sep 6, 2019Engine cooling, Body and structure. 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.
• 10164046Aug 16, 2019Back-over prevention (rear camera). Some vehicles may exhibit the rear parking sensor beeping without any obstacles behind it when the shift lever is shifted into Reverse. This concern only occurs when the rear USB power outlet (1) is broken. This is caused by noise from USB interference with the harness of the rear parking sensor (when the USB power outlet is broken).To correct this issue, the configuration of the USB power outlet has been changed…
• 10163824Aug 12, 2019Engine cooling. Some vehicles may experience a lack of power and the check engine light on with DTC P061B:00 stored in PCM memory under one of the following conditions (A or B). DTC P061B:00 - [PCM] Internal control module torque calculation performance problem. Due to an improper control logic of the PCM, the engine torque calculation error detection is too sensitive. To eliminate this concern, the PCM software has been modified.
• 10163827Aug 7, 2019Electrical system, Equipment. After the installation of a new instrument cluster, the message "Fctry" or “Factory” is displayed instead of the odometer. This concern may also occur when a room fuse is installed in a new vehicle. Some new instrument clusters are in the factory mode setting. Factory mode cancellation is required. NOTE: The concern is applicable to Calsonic Kansei instrument clusters. Not all trim levels are…
• 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)…
• 10164049Aug 6, 2019Engine cooling. On some vehicles, a tapping or knocking noise may be heard from the top end after the engine cools down (vehicle is parked overnight) or after it has been idling for an extended time. The tapping noise will decreases as the vehicle is being driven or if the RPM is held above 2500-3000 RPM. Click here for an example of the noise. Contact Hotline for instructions.
• 10164052Aug 1, 2019Steering. Some customers may have a concern of a loose steering wheel. If a customer reports a loose steering wheel and the lock bolt is found to be loose, DO NOT simply re-tighten the steering wheel. Follow the steps below in the Repair Procedure.
• 10163823Aug 1, 2019Engine cooling. Some customers may experience a check engine light illuminating with DTC P0012:00 stored in PCM memory. DTC P0012:00 - Electric variable valve timing control system: Over-retarded. NOTE: This concern occurs only on vehicles with PCMs manufactured by MITSUBISHI. Due to improper control logic of the PCM, a false error may be detected. To eliminate this concern, the PCM software has been modified.
• 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.
• 10163355Jul 26, 2019Engine cooling. While inspecting turbocharger housings, you may see cracks (fractures) as shown below. The cracks do not affect engine performance or cause any noise, so replacement is NOT necessary.
• 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…
• 10163333Jul 9, 2019Electrical system, Equipment. 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/
• 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…
• 10160582May 29, 2019Engine. If you receive a customer complain of lack of power, rough idle, engine noise with stored DTC's P0340:00, P0304:00, P3400:00, P349B:00, and/or P3498:00, perform the following.
• 10160578May 20, 2019Transmission and drivetrain, Engine. If you receive a customer concern with the check engine light coming on and DTC P3400 (cylinder deactivation system malfunction) stored, perform the inspection in the Repair Procedure.
• 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…
• 10160579May 6, 2019Back-over prevention (rear camera), Equipment. Due to a changes in the 2018 Mazda6, there are two things to note of when installing the Rear Parking Sensors. 1. When securing the main harness in step 4, DO NOT attach the one tie wrap as shown. There is the possibility of attaching it to the moonroof drain hose and pinching the hose. 2.
• 10160575May 1, 2019Electrical system, Equipment, 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.
• 10159195Apr 15, 2019Engine. Some customers may experience a check engine light illuminating with DTC P2096:00 stored in PCM memory. DTC P2096:00 - Air fuel too lean. NOTE: This concern occurs only on vehicles with PCMs manufactured by Mitsubishi. Due to improper control logic of the PCM, a false error may be detected. To eliminate this concern, the PCM software has been modified.
• 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.
• 10159203Apr 8, 2019Engine. If you receive a customer concern with the check engine light coming on and DTC P3400 (cylinder deactivation system malfunction) stored, perform the inspection 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…
• 10159200Apr 1, 2019Engine. On some vehicles, a tapping or knocking noise may be heard from the top end after the engine cools down (vehicle is parked overnight) or it has been idling for an extended time. The tapping noise will decreases as the vehicle is being driven or if the RPM is held above 2500-3000 RPM.
• 10155442Mar 27, 2019Equipment, Electrical system. APPLE CARPLAY™ / ANDROID AUTO™ FREQUENTLY ASKED QUESTIONS (FAQ). Many frequently asked question and the answers.
• 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, Brakes, Forward collision avoidance, Equipment, Lane…. 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)…

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