These locks are intended to help prevent children from accidentally opening the rear doors. Use them on both rear doors whenever a child rides in the rear seat of the vehicle.
If you slide the child safety lock to the lock position before closing that door, the door cannot be opened from the inside. The door can only be opened by pulling the outside handle.

Locking, Unlocking with Door- Lock Knob
Trunk LidMazda 6 Owners Manual: Variable air duct (vad) shutter valve inspection (l3)
1. Remove the air cleaner case. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
2. Disconnect the vacuum hose from the VAD shutter valve actuator.
3. Connect a vacuum pump to the VAD shutter valve actuator.
4. Apply vacuum and verify that the rod moves.
If the rod dose not move, replace the a ...
Mazda 6 Owners Manual: Panel Maintenance
If a panel becomes soiled, wipe it off with a soft cloth soaked in clean water
and thoroughly wrung out.
If some areas require further cleaning, use the following procedure:
1. Wipe the soiled area with a soft cloth soaked in a mild detergent (approx.
5 %) diluted with water.
2. Wipe off the ...