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 this way, be careful not to leave the key inside the vehicle.
Locking, Unlocking with Transmitter
Auto Lock/Unlock FunctionMazda 6 Owners Manual: Refrigerant system service procedures
GAS CHARGING SET INSTALLATION
1. Fully close the valves of the SST (49 C061 001).
2. Connect the SSTs (49 C061 002, 49 C061 003) to the high- and
low-pressure side joints of the SST (49 C061 001).
3. Connect the SSTs (49 C061 006A, 49 C061 007) to the ends of the
SSTs (49 C061 002, 49 C061 00 ...
Mazda 6 Owners Manual: Climate control unit inspection
Full-auto Air Conditioner
1. Connect the all center panel connectors.
2. Turn the ignition switch to ON position.
3. Measure the voltage at each climate control unit terminal and refer to the
terminal voltage list.
If not as specified, inspect the parts listed under Action and the
relate ...