No. 3 Transmitter Id Code Cannot Be Reprogrammed [Keyless Entry System]: Notes

DESCRIPTION AND POSSIBLE CAUSE

3	Transmitter ID code cannot be reprogrammed
DESCRIPTION	Malfunction in transmitter battery, transmitter, keyless receive bracket, keyless receive bracket ground screw, or BCM circuit, keyless receive circuit.
POSSIBLE CAUSE	Malfunction in transmitter battery, transmitter, BCM, or keyless receiver.
Courtesy of MAZDA MOTORS CORP.