Mazda 3 Owners Manual: How to Arm the System
- Close the windows and the moonroof *
securely.
- Switch the ignition OFF.
- Make sure the hood, the doors, and the
liftgate/trunk lid are closed.
- Press the lock button on the transmitter
or lock the driver's door from the
outside with the auxiliary key.
The hazard warning lights will flash
once.
The following method will also arm the
theft-deterrent system:
Press the door-lock switch “ ” while
any door is open and then close all of
the doors.
(With the advanced keyless function)
Press a request switch.
The security indicator light in the
instrument panel flashes twice per
second for 20 seconds.

- After 20 seconds, the system is fully
armed.
NOTE
- The theft deterrent system can also be
armed by activating the auto relock
function with all the doors, the liftgate/
trunk lid and the hood closed.
Refer to Transmitter on .
- The system will disarm if one of the
following operations takes place within
20 seconds after pressing the lock
button:
- Unlocking any door.
- Opening any door or the liftgate/
trunk lid.
- Opening the hood.
- Switching the ignition ON.
- (With the advanced keyless
function)
- Pressing the electric liftgate/trunk lid
opener while the key is being carried.
- To rearm the system, do the arming
procedure again.
- When the doors are locked by pressing
the lock button on the transmitter
or using the auxiliary key while the
theft-deterrent system is armed, the
hazard warning lights will flash once to
indicate that the system is armed.
System triggering conditions
The horn sounds intermittently and the
hazard warning lights flash for about 30
seconds when the system is triggered by
any one of the following:
Unlocking a door ...
An armed system can be turned off using
any one of the following methods:
Pressing the unlock button on the
transmitter.
Switching the ignition ON.
(With the advanced keyless function)
Pr ...
Other materials:
Locking, Unlocking with Key
All doors and the liftgate lock
automatically when the driver's door is
locked using the auxiliary key.
All doors and the liftgate unlock when the
driver's door is unlocked and the auxiliary
key is held in the unlock position for one
second or longer.
Turn the auxiliary key toward the fro ...
Rear Window Defogger
The rear window defogger clears fog from
the rear window.
The ignition must be switched ON to use
the defogger.
Press the switch to turn on the rear
window defogger. The rear window
defogger operates for about 15 minutes
and then turns off automatically.
The indicator light illuminates ...
Starter Cut Relay Removal/Installation [MTX]
Advanced Keyless Entry And Push Button Start System Only
1. Disconnect the negative battery cable..
2. Remove the following parts:
Front scuff plate (LH).
Front side trim (LH).
Side wall.
Console.
3. Set the hood release lever out of the way..
4. Remove the ...