No.1 Door Cannot Be Locked/Unlocked By Transmitter (Card Key): Notes

DOOR CANNOT BE LOCKED/UNLOCKED BY TRANSMITTER (CARD KEY) POSSIBLE CAUSE TABLE

1	Door cannot be locked/unlocked by transmitter
POSSIBLE CAUSE	Malfunction in transmitter (card key) battery or transmitter (card key) Malfunction in keyless control module Malfunction in keyless receiver Wrong usage The after-market electrical parts are interfering with the keyless entry system
Courtesy of MAZDA MOTORS CORP.