1. Remove the rear seat cushion.
2. Remove the bolts.

3. Remove the rear buckles.
4. Install in the reverse order of removal.
Front buckle removal/installation
Seat belt inspectionMazda 6 Service Manual: Saving Fuel and Protection of the Environment
How you operate your Mazda determines how far it will travel on a tank of fuel.
Use these suggestions to help save fuel and reduce CO2.
Avoid long warm-ups. Once the engine runs smoothly, begin driving.
Avoid fast starts.
Drive at lower speeds.
Anticipate when to apply the brakes (avoid ...
Mazda 6 Service Manual: Keyless Entry System
This system uses the key buttons to remotely lock and unlock the doors and the
trunk lid, and opens the trunk lid.
The system can start the engine without having to take the key out of your purse
or pocket.
It can also help you signal for attention or help.
Operating the theft-deterrent syste ...