Depress the button on the seat belt buckle.

Fastening the Seat Belt
Seat Belt ExtenderClutch Release Cylinder Removal/Installation [C66 M R]
CAUTION:
Do not allow clutch fluid get on a painted surface. Clutch fluid contains
properties which can dissolve the paint. If clutch fluid gets on a painted surface,
wash it off with water immediately and wipe the area off completely.
1. Remove the aerodynamic under cover No.2.. ...
Sunroof Unit Removal/Installation
CAUTION:
If the sunshade is forced close while the sunroof is open, the sunshade could
be damaged.
1. Disconnect the negative battery cable..
2. Remove the rain sensor cover. (Vehicles with auto light/wiper system).
3. Disconnect the rain sensor connector. (Vehicles with auto l ...
Seat Precautions
WARNINGMake sure the adjustable components of a seat
are locked in place:
Adjustable seats and seatbacks that are not securely locked are
dangerous. In a
sudden stop or collision, the seat or seatback could move, causing
injury. Make sure the
adjustable components of the ...