Depress the button on the seat belt buckle. If the belt does not fully retract, pull it out and check for kinks or twists. Then make sure it remains untwisted as it retracts.

NOTE
If a belt does not fully retract, inspect it for kinks and twists. If it is still not retracting properly, have it inspected at an Authorized Mazda Dealer.
Fastening the Seat Belt
Front Shoulder Belt AdjusterMazda 6 Owners Manual: Wheel and tire
WHEEL BALANCE ADJUSTMENT (16 INCH AND 17 INCH ALUMINUM ALLOY WHEEL)
Caution
Adjust the outer wheel balance first, then the inner wheel
balance.
Be careful not to scratch the wheels.
Adhesive-type Balance Weight (Outer)
1. Remove the old balance weight from the wheel.
2. Remove the dou ...
Mazda 6 Owners Manual: Rear shock absorber removal/installation
Caution
Performing the following procedures without first removing the ABS
wheel-speed sensor may possibly cause an open circuit in the harness if it
is pulled by mistake. Before performing the following procedures, remove the
ABS wheel-speed sensor (axle side) and fix it to an appropri ...