Service bulletin SA-046-20

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10174689
Published by NHTSA	2020-05-05
Manufacturer's number	SA-046-20
Manufacturer's date	2020-04-14
NHTSA component	LANE DEPARTURE; EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE; VISIBILITY

NHTSA's summary

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).

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Driver assistance, Equipment and accessories, Glass, wipers and mirrors

Vehicles listed
MAZDA CX-30	2020
MAZDA MAZDA3	2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
19V907000	2019-12-19. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
2019369	2019-07-29. Visual System
19V558000	2019-07-29. VISIBILITY:GLASS, SIDE/REAR

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SA-043-26	2026-08-04. Service bulletin. This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-063/24 09/06/24 DESCRIPTION The Blind Spot Monitoring (BSM) system can malfunction with the following symptoms if the rear side radar sensors are installed facing the wrong direction.
SA-025-25	2025-06-05. Service bulletin. Some vehicles may exhibit wiper blade contact with the A-pillar trim, with or without a chattering noise. This condition may be caused by worn or contaminated wiper blades. It can also be caused by bent wiper arms, or loose wiper arm retaining nuts due to improper handling. Improper handling occurs when pulling on or forcing the wiper arms. Technicians should be aware that while replacement of the wiper blade may resolve some cases, correction of bent components or repositioning of the wiper arms, particularly when the retaining nut is loose, requires additional steps to ensure proper alignment and function.
SA-063-24	2024-10-04. Service bulletin. The Blind Spot Monitoring (BSM) system can malfunction with the following symptoms if the rear side radar sensors are installed facing the wrong direction. BSM system indicates vehicle on the opposite side. i-ACTIVSENSE indicator ring will not turn green Rear Cross Traffic Alert (RCTA) does not work Rear side radar sensor aiming may fail TPMS DTC(s) stored
SSPC5 MRTa	2024-08-05. Service campaign. SSPC5 - SPECIAL SERVICE PROGRAM - 2019-2021 MAZDA3 AND 2020-2021 CX-30 - CONTROL UNITS REPROGRAMMING Concern 1: Mazda3 and CX-30 – Battery concern On the subject vehicles, the CCU (climate control unit) and BCM (body control module) may not go into sleep mode even after the ignition is switched OFF or may take time to go into sleep mode. An electric current may continue to flow, allowing the battery to discharge and run out if the vehicle is left unused for a certain time. Causal factor: Inappropriate control program of CCU and BCM. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules. Concern 2: Mazda3 and CX-30 - MRCC concern: On the subject vehicles, the responsiveness when driving following a preceding car using the MRCC (Mazda Radar Cruise Control) system is designed to high response. Some drivers may feel the acceleration and deceleration jerk when using MRCC somewhat uncomfortable. The product update has been incorporated into mass-production Mazda3 and CX-30 vehicles, and acceleration and deceleration has been made more natural by changing controls to be closer to human expectation. The similar update will be made on the subject vehicles produced prior to the product update under this SSP. * MRCC: Mazda Radar Cruise Control (MRCC) uses a millimeter wave radar to judge the relative speed and distance to the car ahead and automatically controls vehicle speed. Working within a set speed range, MRCC automatically adjusts and maintains a safe following distance from the car in front. Concern 3: CX-30 - Theft-Deterrent System concern On the subject vehicles, the theft-deterrent system may not recognize correctly the open/close state of power liftgate, which may allow the theft-deterrent system to activate wrongly when the liftgate is opened by pressing the power liftgate switch. Causal factor: Inappropriate control program of BCM and LFU. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules.
SSPC5 FCa	2024-08-05. Service campaign. SSPC5 - SPECIAL SERVICE PROGRAM - 2019-2021 MAZDA3 AND 2020-2021 CX-30 - CONTROL UNITS REPROGRAMMING Concern 1: Mazda3 and CX-30 – Battery concern On the subject vehicles, the CCU (climate control unit) and BCM (body control module) may not go into sleep mode even after the ignition is switched OFF or may take time to go into sleep mode. An electric current may continue to flow, allowing the battery to discharge and run out if the vehicle is left unused for a certain time. Causal factor: Inappropriate control program of CCU and BCM. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules. Concern 2: Mazda3 and CX-30 - MRCC concern: On the subject vehicles, the responsiveness when driving following a preceding car using the MRCC (Mazda Radar Cruise Control) system is designed to high response. Some drivers may feel the acceleration and deceleration jerk when using MRCC somewhat uncomfortable. The product update has been incorporated into mass-production Mazda3 and CX-30 vehicles, and acceleration and deceleration has been made more natural by changing controls to be closer to human expectation. The similar update will be made on the subject vehicles produced prior to the product update under this SSP. * MRCC: Mazda Radar Cruise Control (MRCC) uses a millimeter wave radar to judge the relative speed and distance to the car ahead and automatically controls vehicle speed. Working within a set speed range, MRCC automatically adjusts and maintains a safe following distance from the car in front. Concern 3: CX-30 - Theft-Deterrent System concern On the subject vehicles, the theft-deterrent system may not recognize correctly the open/close state of power liftgate, which may allow the theft-deterrent system to activate wrongly when the liftgate is opened by pressing the power liftgate switch. Causal factor: Inappropriate control program of BCM and LFU. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules.
SSPC5 FC	2024-08-05. Service campaign. SSPC5 - SPECIAL SERVICE PROGRAM - 2019-2021 MAZDA3 AND 2020-2021 CX-30 - CONTROL UNITS REPROGRAMMING Concern 1: Mazda3 and CX-30 – Battery concern On the subject vehicles, the CCU (climate control unit) and BCM (body control module) may not go into sleep mode even after the ignition is switched OFF or may take time to go into sleep mode. An electric current may continue to flow, allowing the battery to discharge and run out if the vehicle is left unused for a certain time. Causal factor: Inappropriate control program of CCU and BCM. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules. Concern 2: Mazda3 and CX-30 - MRCC concern: On the subject vehicles, the responsiveness when driving following a preceding car using the MRCC (Mazda Radar Cruise Control) system is designed to high response. Some drivers may feel the acceleration and deceleration jerk when using MRCC somewhat uncomfortable. The product update has been incorporated into mass-production Mazda3 and CX-30 vehicles, and acceleration and deceleration has been made more natural by changing controls to be closer to human expectation. The similar update will be made on the subject vehicles produced prior to the product update under this SSP. * MRCC: Mazda Radar Cruise Control (MRCC) uses a millimeter wave radar to judge the relative speed and distance to the car ahead and automatically controls vehicle speed. Working within a set speed range, MRCC automatically adjusts and maintains a safe following distance from the car in front. Concern 3: CX-30 - Theft-Deterrent System concern On the subject vehicles, the theft-deterrent system may not recognize correctly the open/close state of power liftgate, which may allow the theft-deterrent system to activate wrongly when the liftgate is opened by pressing the power liftgate switch. Causal factor: Inappropriate control program of BCM and LFU. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules.
SSPC5_Warranty	2024-07-06. Service campaign. SSPC5 - SPECIAL SERVICE PROGRAM - 2019-2021 MAZDA3 AND 2020-2021 CX-30 - CONTROL UNITS REPROGRAMMING Concern 1: Mazda3 and CX-30 – Battery concern On the subject vehicles, the CCU (climate control unit) and BCM (body control module) may not go into sleep mode even after the ignition is switched OFF or may take time to go into sleep mode. An electric current may continue to flow, allowing the battery to discharge and run out if the vehicle is left unused for a certain time. Causal factor: Inappropriate control program of CCU and BCM. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules. Concern 2: Mazda3 and CX-30 - MRCC concern: On the subject vehicles, the responsiveness when driving following a preceding car using the MRCC (Mazda Radar Cruise Control) system is designed to high response. Some drivers may feel the acceleration and deceleration jerk when using MRCC somewhat uncomfortable. The product update has been incorporated into mass-production Mazda3 and CX-30 vehicles, and acceleration and deceleration has been made more natural by changing controls to be closer to human expectation. The similar update will be made on the subject vehicles produced prior to the product update under this SSP. * MRCC: Mazda Radar Cruise Control (MRCC) uses a millimeter wave radar to judge the relative speed and distance to the car ahead and automatically controls vehicle speed. Working within a set speed range, MRCC automatically adjusts and maintains a safe following distance from the car in front. Concern 3: CX-30 - Theft-Deterrent System concern On the subject vehicles, the theft-deterrent system may not recognize correctly the open/close state of power liftgate, which may allow the theft-deterrent system to activate wrongly when the liftgate is opened by pressing the power liftgate switch. Causal factor: Inappropriate control program of BCM and LFU. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules.
SSPC5 Repair	2024-07-06. Service campaign. SSPC5 - SPECIAL SERVICE PROGRAM - 2019-2021 MAZDA3 AND 2020-2021 CX-30 - CONTROL UNITS REPROGRAMMING Concern 1: Mazda3 and CX-30 – Battery concern On the subject vehicles, the CCU (climate control unit) and BCM (body control module) may not go into sleep mode even after the ignition is switched OFF or may take time to go into sleep mode. An electric current may continue to flow, allowing the battery to discharge and run out if the vehicle is left unused for a certain time. Causal factor: Inappropriate control program of CCU and BCM. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules. Concern 2: Mazda3 and CX-30 - MRCC concern: On the subject vehicles, the responsiveness when driving following a preceding car using the MRCC (Mazda Radar Cruise Control) system is designed to high response. Some drivers may feel the acceleration and deceleration jerk when using MRCC somewhat uncomfortable. The product update has been incorporated into mass-production Mazda3 and CX-30 vehicles, and acceleration and deceleration has been made more natural by changing controls to be closer to human expectation. The similar update will be made on the subject vehicles produced prior to the product update under this SSP. * MRCC: Mazda Radar Cruise Control (MRCC) uses a millimeter wave radar to judge the relative speed and distance to the car ahead and automatically controls vehicle speed. Working within a set speed range, MRCC automatically adjusts and maintains a safe following distance from the car in front. Concern 3: CX-30 - Theft-Deterrent System concern On the subject vehicles, the theft-deterrent system may not recognize correctly the open/close state of power liftgate, which may allow the theft-deterrent system to activate wrongly when the liftgate is opened by pressing the power liftgate switch. Causal factor: Inappropriate control program of BCM and LFU. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules.
SSPC5 MRT	2024-07-05. Service campaign. SSPC5 - SPECIAL SERVICE PROGRAM - 2019-2021 MAZDA3 AND 2020-2021 CX-30 - CONTROL UNITS REPROGRAMMING Concern 1: Mazda3 and CX-30 – Battery concern On the subject vehicles, the CCU (climate control unit) and BCM (body control module) may not go into sleep mode even after the ignition is switched OFF or may take time to go into sleep mode. An electric current may continue to flow, allowing the battery to discharge and run out if the vehicle is left unused for a certain time. Causal factor: Inappropriate control program of CCU and BCM. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules. Concern 2: Mazda3 and CX-30 - MRCC concern: On the subject vehicles, the responsiveness when driving following a preceding car using the MRCC (Mazda Radar Cruise Control) system is designed to high response. Some drivers may feel the acceleration and deceleration jerk when using MRCC somewhat uncomfortable. The product update has been incorporated into mass-production Mazda3 and CX-30 vehicles, and acceleration and deceleration has been made more natural by changing controls to be closer to human expectation. The similar update will be made on the subject vehicles produced prior to the product update under this SSP. * MRCC: Mazda Radar Cruise Control (MRCC) uses a millimeter wave radar to judge the relative speed and distance to the car ahead and automatically controls vehicle speed. Working within a set speed range, MRCC automatically adjusts and maintains a safe following distance from the car in front. Concern 3: CX-30 - Theft-Deterrent System concern On the subject vehicles, the theft-deterrent system may not recognize correctly the open/close state of power liftgate, which may allow the theft-deterrent system to activate wrongly when the liftgate is opened by pressing the power liftgate switch. Causal factor: Inappropriate control program of BCM and LFU. Update to BCM will also update the IC, DOOR_ESU_D, DOOR_ESU_P, ESU modules.
SA-007-24a	2024-05-04. Service bulletin. This information will give you the necessary knowledge to respond to customers concerns of Smart Brake Support (SBS) unintended braking. By educating the customer on the system operation, it should reduce their anxiety or distrust of the vehicle.