Toyota Lexusc Owner's Handbook Manual page 64

Falling down protection function
When you open the back door with the switch or the wireless
remote control, if some loads such as snow on the back door
make the back door fall down, the back door will automatically
close. The beeps sound intermittently while closing the back
door.
Before opening the power back door, make sure there is no
load on the back door.
If you close the back door by hand right after the back door
opening, this function may work even there is no load on the
back door.
CAUTION
The power back door could injure people if they are
caught in the door path. When using the power back
door, observe the following:
D Before you close the power back door, always make
sure there is nobody around it. If someone's neck,
head or hands get caught in a closing door, it could
result in a serious injury. When anyone closes the
power back door, make sure he or she operates the
door safely.
D Do not leave small children or pets unattended in
your vehicle. They could operate the power back
door, and anyone around the back door could be
injured. Turn off the power back door system when
the power back door is not in use.
D Never try jamming any part of your body to make the
jam protection function work intentionally.
D The jam protection function may not work if
something gets caught just before the back door is
fully closed.
KEYS AND DOORS
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