2026 Mazda MAZDA3 technical service bulletins
78 technical service bulletins and manufacturer communications cover the 2026 Mazda MAZDA3.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Subject: Update – Campaign Warranty Claim Response Enhancements – Modules Not Repaired for Certain...
- Some customers may complain about any of the following 1. Infotainment Center Display does not provide the...
- Subject: Notification of Dealer Re-Work (DRW59) – 2026MY CX-30 and 2026MY Mazda3
- Description
- Mazda Connected Services
- Description
- This Service Alert supersedes the previously issued service alert listed below
- This Service Alert supersedes the previously issued service alert listed below
- This bulletin supersedes the previously issued bulletin(s) listed below
- This Service Alert supersedes the previously issued bulletin(s) listed below
- This Service Alert supersedes the previously issued SA(s) listed below
- Description
- This Service Alert supersedes the previously issued SA(s) listed below
- Description
- This SA supersedes the previously issued SA(s) listed below
- COMPLIANCE WITH NEW YORK STATE GENERAL BUSINESS LAW §399‑CCCCC (CONNECTED VEHICLE SERVICE; DOMESTIC...
- This Service Alert supersedes the previously issued SAs listed below
- Updated software release for concerns with mazda connect infotainment system description
- This SA supersedes the previously issued SA(s) listed below
- This SA supersedes the previously issued bulletin(s) listed below
- This Service Alert supersedes the previously issued SA listed below
- This Service Alert supersedes the previously issued SA(s) listed below
- Description
- This SA supersedes the previously issued SA(s) listed below
- This service alert supersedes the previously issued service alert listed below
- This SA supersedes the previously issued SA(s) listed below
- Description
- This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red....
- Some customers may experience a message "TCU Malfunction
- This Service Alert supersedes the previously issued M-Tip(s) listed below
- This SA supersedes the previously issued bulletin(s) listed below
- This SA supersedes the previously issued SA(s) listed below
- Some customers may experience the check engine light on with DTC P0126:00 (Thermostat stuck open) stored
- This Service Alert supersedes the previously issued SA(s) and TSB(s) listed below: The changes are noted...
- This Service Alert supersedes the previously issued SA(s) listed below
- This Service Alert supersedes the previously issued SA(s) listed below
- There are currently 2 methods for cutting a new auxiliary key blank
- There are wrinkles on the leather seat cushion and/or seat back surface at PDI, when new vehicle is...
- Some customers may complain that the tire sidewalls are distorted or "damaged". Sidewall...
- Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter...
- DTC P0126:00.
- Mazda Connect Services
- Some customers may experience a message "TCU Malfunction
- If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...),...
- Some customers may complain about any of the following: 1. Infotainment Center Display does not provide...
- A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating
- Customers may report no audio when using the infotainment fader function fully adjusted to the rear
- Clicking noise when opening and/or closing the front door due to a broken front door checker plate.
- When inspected, the differential or PTO oil is dark or black
- Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging
- Some customers may experience that after the doors are locked and the Fuel Door Lock Delay with MAZDA...
- There have been warranty claims submitted for growling or bearing whine noise in differentials, transfer...
- A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023-2026 models
- Noise, Vibration, and Harshness (NVH) Diagnostic Guidelines Diagnostic Guidelines When diagnosing NVH...
- Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle...
- Some customers may notice water in the trunk after a car wash or heavy rain
- The Mazda DCA-8000 is required for all warranty battery testing
- Some customers will report that their fuel door (AKA, fuel filler door, fuel lid, and fuel-filler lid) was...
- This service information provides testing and charging procedures in order to promote proper battery...
- When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate...
- Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair...
- For improvement of electrical diagnosis, the SKYACTIV® Wiring Terminal Test Kits has been delivered all...
- Interior parts made of resin have antistatic coating to prevent dust from sticking on the surfaces, and...
- One of the following DTCs stored in memory along with a system status notice on the Multi-information...
- Mazda Connected Services
- A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023-2026 models
- Some customers may experience a Connected Vehicle failure
- Some customers may complain about any of the following: 1. Infotainment Center Display does not provide...
- Exterior trim heat damage such (melted, separating, etc.) when parked near a glass building or Low-E windows
- When replacing the MAZDA CONNECT remote tuner (RT) with a replacement tuner for any reason, a call must be...
- “TSR system performance is reduced
- Mazda Connected Services
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