To open, pull the remote fuel-filler lid release.
To close, press the fuel-filler lid until it locks securely.
Mazda 6 Owners Manual: Child-Restraint Precautions
Mazda strongly urges the use of child-restraint systems for children small enough
to use them.
You are required by law to use a child-restraint system for children in the U.S.
and Canada. Check your local and state or provincial laws for specific requirements
regarding the safety of children ...
Mazda 6 Owners Manual: Interior
Front
Rear
...