Mazda 3 Owners Manual: 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 front to lock, toward the back to unlock.
NOTE Holding the auxiliary key in the unlocked position in the driver's door lock for about a second unlocks all doors and the liftgate.
To unlock only the driver's door, insert the auxiliary key into the driver's door lock and turn the auxiliary key briefly to the unlock position and then immediately return it to the center position.
Operational Range
WARNING
Always take all children and pets with
you or leave a responsible person with
them:
Leaving a child or a pet unattended in
a parked vehicle is dangerous. In hot
weathe ...
Locking, Unlocking with Request
Switch (With the advanced keyless
function)
All doors and the liftgate can be locked/
unlocked by pressing the request switch
on the front doors while the key is being
carried.
(5–door)
The request switch on the liftgate can only
be use ...
Other materials:
Trunk Lid Opener Switch Inspection
1. Disconnect the negative battery cable..
2. Remove the trunk lid trim..
3. Remove the high-mount brake light..
4. Remove the trunk lid opener switch..
5. Verify the continuity of trunk lid opener switch terminals A and B.
6. Verify that the continuity is as indicated in the table.
...
Engine Coolant Temperature (ECT) Sensor Inspection [Mzr 2.0, Mzr 2.5]
ECT Sensor No.1
Resistance inspection
WARNING:
When the engine is hot, it can badly burn. Turn off the engine and wait until
it is cool before removing the ECT sensor.
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Drain the engine coolant..
4. R ...
Heater Core Inspection
1. Inspect the heater core for damage, cracks, and water leakage.
If there is any malfunction, replace the heater core.
2. Visually inspect the fins for bending.
If there is any bending, use the end of a flathead screwdriver to straighten
the fins.
3. Visually inspect ...
