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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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Only bulletins with component: Driver assistance are shown. Show all

Bulletins, newest first
SA-050-202020-06-02. Service bulletin. FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: RADAR. Some vehicles may experience M-MDS (MDARS) showing the front radar dynamic aiming is incomplete although the procedure is completed. This is caused by faulty front radar software logic and a mass production change is planned. If the screen below is displayed after the front radar dynamic aiming is performed, check the vehicle using the following inspection procedure.
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).
SA-043-202020-05-05. Service bulletin. FORWARD COLLISION AVOIDANCE; EQUIPMENT ADAPTIVE/MOBILITY. Some vehicles may exhibit DTC U2120:00 and/or U2500:82 stored in memory and the i-ACTIVSENSE warning light (amber) ON when turning ON the ignition after any electronic control unit (ECU) is reprogramed or configured using MDARS. NOTE: ECU stands for general units (cameras and modules), all of which can be reprogrammed.
SA-042-202020-04-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; BACK OVER PREVENTION. Some customer may experience all of the following when turning the ignition ON under hot weather conditions such as parking under the hot sun for some period of time: • i-ACTIVSENSE warning light ON (1) • Smart Brake Support (SBS) indicator light ON (2) • "Excessive Camera Temp. Drive Safely" or "Safety and Driver Support Systems Temporarily Disabled" warning messages • DTC B14F9:00 stored in memory DTC B14F9:00 cannot be found on MGSS, therefore repair cannot be performed. DTC_B14F9:00 is falsely stored instead of DTC B14F0:4B. DTC_B14F0:4B [VCM] (Forward sensing camera (FSC) internal temperature abnormality) - FSC detects temperature higher than operation range.
SA-037-202020-04-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA. 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 Warning System (LDWS) and/or High Beam Control system (HBC). • In other cases this DTC might be found without a related customer concern. NOTE: Instrument Cluster Multi-Information Display Warning Messages vary depending on vehicle year/model. See the Owner's Manual for details.
SA-050-192019-11-24. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE. 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). FSC dynamic aiming is completed if the following conditions are met: 1. "Forward Sensing Camera Calibration Mode" message (1) on instrument cluster MID disappears. 2.The i-ACTIVSENSE warning light (2) turns off. 3. Steps 1 and 2 are completed within 20 minutes from start of aiming.
SA-019-192019-11-21. Service bulletin. EQUIPMENT; FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: RADAR; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. Some vehicles may experience M-MDS (MDARS) showing the front radar dynamic aiming is incomplete, although the procedure is completed. This is caused by faulty front radar software logic and a mass production change is planned. If the screen below is displayed after the front radar dynamic aiming is performed, check the vehicle using the following inspection procedure.
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.