No. 1 Door Cannot Be Locked/Unlocked By Transmitter (Electrical Key Button) [Advanced Keyless Entry And Push Button Start System]: Notes

DOOR CANNOT BE LOCKED/UNLOCKED BY TRANSMITTER (ELECTRICAL KEY BUTTON) DESCRIPTION AND POSSIBLE CAUSES

1	Door cannot be locked/unlocked by transmitter (electrical key button)
DESCRIPTION	Cannot door lock and/or unlock with transmitter (electrical key button)
POSSIBLE CAUSE	Malfunction in transmitter (electrical key) battery or transmitter (electrical key) Malfunction in keyless control module Malfunction in keyless receiver Malfunction in BCM Malfunction indoor switch or trunk lid switch Open or short circuit in wiring between trunk lid latch switch and BCM Open or short circuit in wiring harness door switch and BCM Malfunction in door lock actuator Open or short circuit in wiring between door lock actuator and BCM Open or short circuit in wiring between keyless control module and BCM Poor connection of connector, terminal damage Wrong usage The after-market electrical parts are interfering with the keyless entry system
Courtesy of MAZDA MOTORS CORP.