Warning
Warning
Caution
1. Turn the ignition switch to LOCK position.
2. Disconnect the negative battery cable and wait for more than 1 minute.
3. Remove the B-pillar lower trim.
4. Using a screwdriver, pry out the pre-tensioner seat belt connector's stopper plate.

5. Disconnect the pre-tensioner seat belt connector.
6. Remove the covers.

7. Remove the bolts and screw, then remove the front seat belt.
8. Install in the reverse order of removal.
9. Verify that the air bag system warning light illuminates for approximately 6 seconds
and then goes off.
Seat belt
Rear side seat belt removal/installationMazda 6 Service Manual: Cruise Control (Some models)
With cruise control, you can set and automatically maintain any speed of more
than about 25 km/h (16 mph).
WARNING
Do not use the cruise control under the following conditions: Using
the cruise control under the following conditions is dangerous and could result
in loss of vehicle control.
...
Mazda 6 Service Manual: Headliner removal/installation
1. Disconnect the negative battery cable.
2. Turn the seaming welt and weatherstrip over.
3. Remove the sunroof seaming welt. (vehicles with sunroof only)
4. Remove the A-pillar trims.
5. Remove the B-pillar upper trims.
6. Remove the C-pillar trims.
7. Remove the front and rear map light. (Se ...