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Service bulletins for the 2018 Mazda Mazda6

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.

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

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Bulletins, newest first
01-003-25b2026-01-03. Service bulletin. ENGINE. Some customers may experience a check engine light ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: Engine takes longer to warm up. • Engine temperature gauge fluctuates. • Low coolant temperature indicator (blue) light stays on longer or turns on while driving. • Poor heater performance, especially at idle. • This concern may be caused if the coolant control valve fail-safe thermostat opens at a temperature lower than the normal temperature due to a deformation of the thermostat diaphragm. To eliminate the concern, the water flow control valve specification has been modified.
01-003-25a2026-01-03. Service bulletin. ENGINE. Some customers may experience a check engine light ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: Engine takes longer to warm up. Engine temperature gauge fluctuates. Low coolant temperature indicator (blue) light stays on longer or turns on while driving. Poor heater performance, especially at idle. This concern may be caused if the coolant control valve fail-safe thermostat opens at a temperature lower than the normal temperature due to a deformation of the thermostat diaphragm. To eliminate the concern, the water flow control valve specification has been modified.
SA-055-252025-12-05. Service bulletin. SERVICE BRAKES. 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. NOTE: Before following this Service Alert repair procedure, ensure published TSBs in MGSS have been completed per model year.
SA-052-252025-12-05. Service bulletin. ENGINE; POWER TRAIN. 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 repair, or just to clean the area and monitor it at the next service. Examples of residue or seepage that may not be considered a leak and that may not require repair based on splash shield inspection.
SA-051-252025-12-05. Service bulletin. STEERING; SUSPENSION; POWER TRAIN; WHEELS. Noise, Vibration, and Harshness (NVH) Diagnostic Guidelines Diagnostic Guidelines When diagnosing NVH concerns, it is essential to first classify the issue into one of three primary categories: Noise, Vibration, or Harshness. Many customer complaints may involve overlapping symptoms, such as both noise and vibration, so identifying the dominant characteristic is critical. Once the primary symptom is determined, follow the appropriate diagnostic path. For example, if a concern includes both noise and vibration but is related to vehicle speed, the vibration diagnostic path should be followed. When considering component replacement during the diagnostic process, it is best practice to start with the lowest cost or most accessible part unless diagnostic evidence clearly identifies a more expensive or complex component as the root cause. This approach helps minimize repair costs and avoids unnecessary part replacements. For example, a growling or bearing whine noise may be mistakenly attributed to internal components in the differential, transfer unit, or transmission, when the actual source is a wheel bearing. Misdiagnosis like this can lead to unnecessary repairs, added time and cost. To help prevent this, always follow the guidelines in the repair procedure.
SA-020-25a2025-12-05. Service bulletin. WHEELS. There have been warranty claims submitted for growling or bearing whine 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.
SA-044-252025-11-05. Service bulletin. ELECTRICAL SYSTEM. For improvement of electrical diagnosis, the SKYACTIV® Wiring Terminal Test Kits has been delivered all the dealers. The terminal test kit enables you: To check pin fit drag of all PCM terminals used in SKYACTIV® vehicles and compare suspect terminal drag with a known good terminal. To measure the voltage/resistance avoiding any terminal damage.
SA-043-252025-10-03. Service bulletin. UNKNOWN OR OTHER. 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.
SA-042-252025-10-03. Service bulletin. UNKNOWN OR OTHER. Interior parts made of resin have antistatic coating to prevent dust from sticking on the surfaces, and depending on the conditions of use, the antistatic components may crystallize slightly, giving an appearance of white stains on the surface.
SA-039/252025-09-05. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY. Some vehicles may experience exterior trim heat damage such (melted, separating, etc.) when parked near a glass building or Low-E windows. This may be caused by the sun's reflection. If a structure's windows create enough of a curve, the concave glass can focus the sun's rays onto a small area and acting like magnifiying glass direct the sunbeams into a hot pinpoint of light. This magnifcation of the sun's rays can cause damage to vehicle trim (see examples). Additional information and exemplar images regarding this phenomenon can be found by performing a google search.
SA-037-252025-09-05. Service bulletin. UNKNOWN OR OTHER. When replacing the MAZDA CONNECT tuner and amp unit (TAU) with a replacement tuner for any reason, a call must be made to inform SiriusXM of the existing Radio ID and the new/replacement SAT Radio ID as soon as possible to ensure the customer leaves the dealership with an active SAT radio.
CSP13d Dealer Ltr2025-08-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
SA-032-252025-07-02. Service bulletin. UNKNOWN OR OTHER. Some customers may complain about a noisy HVAC blower motor or odor after a cabin air filter replacement. Foreign debris on the blower motor after servicing the cabin air filter may be the cause. During the removal of the cabin air filter, foreign debris (leaves, dust, dirt....ect.) may fall on the blower motor causing a fluttering type noise or odor.
SA-031-252025-07-02. Service bulletin. UNKNOWN OR OTHER. Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter may be found to be wet.
SA-007-25a2025-07-02. Service bulletin. ELECTRICAL SYSTEM. The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery. 2. CCA (Cold Cranking Amps): CCA ratings are normally located on a sticker affixed to the top of the battery to indicate a battery’s Cold Cranking Amps. CCA rated batteries are supplied with domestically produced vehicles. NOTE: If an incorrect CCA rating is entered into the Mazda DCA-8000, it will result
CSP11a Warranty2025-07-02. Warranty extension. ENGINE. Mazda Motor Corporation has decided to conduct a Customer Service Program (CSP11) to extend the limited powertrain warranty to 10 years or 120,000 miles, whichever occurs first, for necessary repairs if the covered vehicle has coolant leaks at the cylinder head, around the exhaust manifold. A dealer must inspect and confirm the covered vehicle is exhibiting coolant leaks at the cylinder head around the exhaust manifold matching Technical Service Bulletin 01-002/23 (Feb. 10, 2023) for the repair to be covered.
CSP13c Dealer Ltr2025-07-02. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13b Dealer Ltr2025-06-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13a Parts and Warranty2025-06-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13a Dealer Ltr2025-06-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
09-024-252025-06-04. Service bulletin. UNKNOWN OR OTHER. Some vehicles may exhibit following symptoms: 1. The rearview mirror (1) rattles up and down (2) while adjusting the mirror. 2. The rearview mirror (1) makes a rattle noise depending on the road surface conditions while driving. This concern is caused during rearview mirror installation. The adhesive is squeezed out between the windshield and the mirror base. The rearview mirror is assembled on top of the overextended adhesive. The adhesive is softened by heat, and loosening screws, results in a rattling concern.
CSP13 Repair2025-05-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13 Parts and Warranty2025-05-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13 FAQs2025-05-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION. As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.
CSP13 Dealer Letter2025-05-05. Warranty extension. UNKNOWN OR OTHER. CSP13 - CUSTOMER SERVICE PROGRAM - MAZDA CONNECT INFOTAINMENT SYSTEM LIMITED WARRANTY EXTENSION As a result of a Mazda Connect Infotainment Class Action settlement, Mazda Motor Corporation has decided to implement a Customer Service Program (CSP13). The coverage and terms for vehicles are listed below in this Dealer email and in attached documentation. Only certain vehicles, 2014-2018 Mazda3, 2016-2021 Mazda6, 2016-2021 CX-3, 2016-2020 CX-5, 2016-2020 CX-9, 2016-2023 MX-5, 2016-2022 Mazda2(Puerto Rico Market vehicles) AND that have “CSP13” listed in Warranty Vehicle Inquiry are covered under this CSP. Please review the attached document titled “Subject Vehicles CSP13” for details on the covered vehicle models, model year and production VIN ranges.

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