Pre-Collision Seat Belts; Emergency Locking Retractor (Elr); Automatic Locking Retractor (Alr); Pregnant Women - Lexus RX 350 Owner's Manual

Pre-collision seat belts (front seats of vehicles with pre-collision system)
When the pre-collision sensor detects an obstacle and determines that a
collision is unavoidable, the seat belts help lessen collision injury by
retracting the slack in the front seat belts before the collision, thus
restraining the driver and passenger at an earlier stage.
The seat belts will also operate in the event of sudden braking.
(P. 237)

Emergency locking retractor (ELR)

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The retractor will lock the belt during a sudden stop or on impact. It may also lock if
you lean forward too quickly. To allow the belt to extend, retract the belt and then
pull it slowly.

Automatic locking retractor (ALR)

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When a passenger's shoulder belt is completely extended and then retracted even
slightly, the belt is locked in that position and cannot be extended. This feature is
used to hold the child restraint system (CRS) firmly. To free the belt again, fully
retract the belt and then pull the belt out once more. (P. 124)

Pregnant women

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1-3. Adjustable components (seats, mirrors, steering wheel)
Obtain medical advice and wear the seat belt
in the proper way. (P. 72)
Women who are pregnant should position
the lap belt as low as possible over the hips in
the same manner as other occupants. Extend
the shoulder belt completely over the shoul-
der and position the belt across the chest.
Avoid belt contact over the round part of the
abdominal area.
If the seat belt is not worn properly, not only
the pregnant woman, but also the fetus could
suffer death or serious injury as a result of
sudden braking or a collision.
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