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Service bulletins for the 2020 Mazda Mazda3

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.

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

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By component

By trouble code

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Only bulletins with component: Glass, wipers and mirrors are shown. Show all

Bulletins, newest first
SA-046-202020-05-05. Service bulletin. LANE DEPARTURE; EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE; VISIBILITY. FSC dynamic aiming (mid-drive aiming) may not complete if the vehicle is driven on a road as described below: • The road lane markings are covered by snow and are not visible. • There are no road lane markings on the road surface. • The road is winding and the vehicle cannot drive straight (300 m / 984 ft or more turning radius is required).
09-018-20-36902020-05-04. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY. Some customers may notice white lines appearing across the instrument cluster (as shown below). The white lines may be caused during the production process where poor contact occurs at the internal LCD terminals.
SA-012-20b2020-02-27. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY; ELECTRICAL SYSTEM. 2019-2020 MAZDA3 SERVICE CAUTIONS FOR NEW AND REVISED FEATURES. The 2019-2020 Mazda3 has new and revised features that are different from previous models, and may be difficult to understand. This Service Alert provides valuable information to support potential dealer and customer concerns. Index: PDI fuse, Apple CarPlay / Android Auto Install Kit, Blind Spot Monitoring System (BSM), Front Wiper Service Caution, i-ACTIVSENSE Switch, Traffic Sign Recognition (TSR), MAZDA CONNECT Power Function, MAZDA CONNECT Center Display View, In-Vehicle Digital Owner's Manual, Navigation System, SIRIUSXM Data Service, Power Door Locks, Auxiliary Key, Transmitter Battery Saving Function, Keyless Entry Using Auxiliary Key, Rear Door Child Safety Locks Operation, Link Seat & Climate Control Temperatures, Seat Warmer Turns OFF, Electric Parking Brake (EPB), A/C Air Temperature Is Not Cold, Tire Pressure Monitoring System (TPMS), Condition Based Maintenance, M-MDS (MDARS), Part Replacement
SA-012-20a2020-02-04. Service bulletin. ELECTRICAL SYSTEM; WHEELS; EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY. 2019-2020 MAZDA3 SERVICE CAUTIONS FOR NEW AND REVISED FEATURES. The 2019-2020 Mazda3 has new and revised features that are different from previous models, and may be difficult to understand. This Service Alert provides valuable information to support potential dealer and customer concerns. Index: PDI fuse, Apple CarPlay / Android Auto Install Kit, Blind Spot Monitoring System (BSM), Front Wiper Service Caution, i-ACTIVSENSE Switch, Traffic Sign Recognition (TSR), MAZDA CONNECT Power Function, MAZDA CONNECT Center Display View, In-Vehicle Digital Owner's Manual, Navigation System, SIRIUSXM Data Service, Power Door Locks, Auxiliary Key, Transmitter Battery Saving Function, Keyless Entry Using Auxiliary Key, Rear Door Child Safety Locks Operation, Link Seat & Climate Control Temperatures, Seat Warmer Turns OFF, Electric Parking Brake (EPB), A/C Air Temperature Is Not Cold, Tire Pressure Monitoring System (TPMS), Condition Based Maintenance, M-MDS (MDARS), Part Replacement
SA-012-202020-02-04. Service bulletin. VISIBILITY; EQUIPMENT ADAPTIVE/MOBILITY; WHEELS; ELECTRICAL SYSTEM. 2019-2020 MAZDA3 SERVICE CAUTIONS FOR NEW AND REVISED FEATURES. The 2019-2020 Mazda3 has new and revised features that are different from previous models, and may be difficult to understand. This Service Alert provides valuable information to support potential dealer and customer concerns. Index: PDI fuse, Apple CarPlay / Android Auto Install Kit, Blind Spot Monitoring System (BSM), Front Wiper Service Caution, i-ACTIVSENSE Switch, Traffic Sign Recognition (TSR), MAZDA CONNECT Power Function, MAZDA CONNECT Center Display View, In-Vehicle Digital Owner's Manual, Navigation System, SIRIUSXM Data Service, Power Door Locks, Auxiliary Key, Transmitter Battery Saving Function, Keyless Entry Using Auxiliary Key, Rear Door Child Safety Locks Operation, Link Seat & Climate Control Temperatures, Seat Warmer Turns OFF, Electric Parking Brake (EPB), A/C Air Temperature Is Not Cold, Tire Pressure Monitoring System (TPMS), Condition Based Maintenance, M-MDS (MDARS), Part Replacement
SA-027-192019-12-20. Service bulletin. VISIBILITY; TRAILER HITCHES; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. 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 Deflectors - Splash Guards - Trailer Hitch - Thule Products - Wheels Locks - Aero Kit - Air Dam - Rear Spoiler - Tunnel Under Bars - Lower Arm Bar - Side Sill Extensions - Arm Rest - Illuminated Door sill Trim Plates - Interior Lighting
09-036-19-3623a2019-12-20. Service bulletin. EQUIPMENT; EXTERIOR LIGHTING; VISIBILITY; EQUIPMENT ADAPTIVE/MOBILITY. Some customers may complain about an instrument cluster warning message "Auto Light System Malfunction. Turn On/Off Lights Manually". DTC B10AD:09 (Humidity sensor/solar radiation sensor/auto light sensor/rain sensor malfunction) may also be stored with the exterior light warning indicator light ON. This is caused by the rain sensor detecting a temperature higher than the operation range and temporarily stopping the auto light system. As a fail-safe, the low beam headlights are turned on. The auto light system will start to operate normally when the A/C is turned on and the interior temperature drops. To correct this concern, the heat resistance performance of the rain sensor has been enhanced.
DRW272019-11-21. Service bulletin. STRUCTURE:BODY; VISIBILITY; EQUIPMENT. On certain subject vehicles, it is possible that the chrome plated window moldings may be dirty or have rust spots. The subject vehicles were parked outside when Typhoon No.17 passed through Hiroshima and Hofu, Japan, and might have been exposed to misty seawater caused by a heavy wind. The sampling inspection revealed that the chrome plated window moldings of certain vehicles became rusty due to seawater mist. All of the potentially affected vehicles have been rinsed with fresh water prior to shipment. OUTLINE OF REPAIR: If the vehicle has a port hangtag with direction to repair a chrome molding, but does not show DRW27 in eMDCS Warranty Vehicle Inquiry, please contact Dealer Recall Help on MXConnect > Warranty. Look for a hangtag placed in the vehicle by the port. If one is found and the vehicle displays DRW27 in eMDCS, inspect the affected molding(s) and perform a secondary cleaning with polishing compound. If any rust or pitting is still present, replace that affected molding(s) with new parts(s).
SA-010-19j2019-09-23. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY; EQUIPMENT; ELECTRICAL SYSTEM; LANE DEPARTURE: BLIND SPOT DETECTION; WHEELS. 2019-2020 MAZDA3 SERVICE CAUTIONS FOR NEW AND REVISED FEATURES. The 2019-2020 Mazda3 has new and revised features that are different from previous models, and may be difficult to understand. This Service Alert provides valuable information to support potential dealer and customer concerns. Index: PDI fuse, Apple CarPlay / Android Auto Install Kit, Blind Spot Monitoring System (BSM), Front Wiper Service Caution, i-ACTIVSENSE Switch, Traffic Sign Recognition (TSR), MAZDA CONNECT Power Function, MAZDA CONNECT Center Display View, In-Vehicle Digital Owner's Manual, Navigation System, SIRIUSXM Data Service, Power Door Locks, Auxiliary Key, Transmitter Battery Saving Function, Keyless Entry Using Auxiliary Key, Rear Door Child Safety Locks Operation, Link Seat & Climate Control Temperatures, Seat Warmer Turns OFF, Electric Parking Brake (EPB), A/C Air Temperature Is Not Cold, Tire Pressure Monitoring System (TPMS), Condition Based Maintenance, M-MDS (MDARS), Part Replacement.

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