Keyless entry system/Push Button Start System/Immobilizer system

WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of MAZDA MOTORS CORP.

PARTS DESCRIPTION

1	Push button start (See PUSH BUTTON START REMOVAL/INSTALLATION .) (See PUSH BUTTON START INSPECTION .)
2	LF control unit (See LF CONTROL UNIT REMOVAL/INSTALLATION .) (See LF CONTROL UNIT INSPECTION [(US)] .) (See SECURITY AND LOCKS-RELATED PARTS PROGRAMMING .)
3	Keyless antenna (interior, rear) (See KEYLESS ANTENNA REMOVAL/INSTALLATION [(US)] .) (See KEYLESS ANTENNA INSPECTION .)
4	Keyless antenna (interior, front) (See KEYLESS ANTENNA REMOVAL/INSTALLATION [(US)] .) (See KEYLESS ANTENNA INSPECTION .)
5	Keyless receiver (See KEYLESS RECEIVER REMOVAL/INSTALLATION .) (See KEYLESS RECEIVER INSPECTION .)
6	Remote transmitter (See REMOTE TRANSMITTER DISASSEMBLY/ASSEMBLY .) (See REMOTE TRANSMITTER ID CODE REGISTRATION .) (See CLEARING REMOTE TRANSMITTER .) (See REMOTE TRANSMITTER BATTERY VOLTAGE INSPECTION .) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [(US)] .)