Seat Belts-Shoulder Belt Anchor; Rear Door Child Safety Locks - Toyota Sienna 2021 Quick Reference Manual

SAFETY & EMERGENCY FEATURES
Seat belts
NOTE: If a passenger's seat belt is fully extended, then retracted even slightly,
the Automatic locking retractor (ALR) will prevent it from being re-extended
beyond that point, unless fully retracted again. This feature is used to help
hold child restraint systems securely.
To find more information about seat belts, and how to install a child restraint
system, refer to the Owner's Manual.

Seat belts-Shoulder belt anchor

Rear door child safety locks

Rear door
Moving the lever downward will allow the door to be opened only from the outside.
Unlock
Lock
62
Keep as low on
hips as possible
Push up, or squeeze
lock release to lower
Take up slack
Too high