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

DESCRIPTION AND POSSIBLE CAUSE

1	Door cannot be locked/unlocked by advanced key
DESCRIPTION	Cannot door lock and/or unlock with transmitter (electrical key button)
POSSIBLE CAUSE	Malfunction in advanced key battery or advanced key Malfunction in keyless control module Malfunction in keyless receiver Malfunction in BCM Malfunction in door switch, key remainder switch or trunk lid/liftgate opener switch Open or short circuit in wiring between trunk lid/liftgate latch switch and BCM Open or short circuit in wiring harness door latch switch and BCM Open or short circuit in wiring harness key reminder 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.