If the theft-deterrent system detects an inappropriate entry into the vehicle, which could result in the vehicle or its contents being stolen, the alarm alerts the surrounding area of an abnormality by sounding the horn and flashing the hazard warning lights.
The system will not function unless it's properly armed. So when you leave the vehicle, follow the arming procedure correctly.
Operation
OperationMazda 6 Owners Manual: Dsc on-board diagnosis
On-Board Diagnostic (OBD) Test Description
(See ABS (ABS/TCS) ON-BOARD DIAGNOSIS)
DTC Table
PID/DATA Monitor Table
Active Command Modes Table
...
Mazda 6 Owners Manual: Locking, Unlocking with Door- Lock Switch
All doors lock automatically when the lock side is pressed. They unlock when
the unlock side is pressed.
Driver's door
Front passenger's door
To lock all the doors from an open front door, press the lock side of the door
lock switch and then close the door.
NOTE
When locking the doors t ...