Lexus is300 2021, Service Manual

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3-1. Key information
3
Be
fore
dri
ving
● As the electronic key always receives
radio waves, the battery will become
depleted even if the electronic key is not
used. The following symptoms indicate
that the electronic key battery may be
depleted. Replace the battery when nec-
essary.
• The smart access system with push-but-
ton start or the wireless remote control
does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface
does not turn on.
● To avoid serious deterioration, do not
leave the electronic key within 3 ft. (1 m)
of the following electrical appliances that
produce a magnetic field:
• TVs
• Personal computers
• Cellular phones, cordless phones and
battery chargers
• Recharging cellular phones or cordless
phones
• Table lamps
• Induction cookers
■
Replacing the battery

P.316
■ Confirmation of the number of regis-
tered keys
The number of keys already registered to
the vehicle can be confirmed. Ask your
Lexus dealer for details.
NOTICE
■ To prevent key damage
● Do not drop the keys, subject them to
strong shocks or bend them.
● Do not expose the keys to high tem-
peratures for long periods of time.
● Do not get the keys wet or wash them
in an ultrasonic washer etc.
● Do not attach metallic or magnetic
materials to the keys or place the keys
close to such materials.
● Do not disassemble the keys.
● Do not attach a sticker or anything else
to the surface of the electronic key.
● Do not place the keys near objects that
produce magnetic fields, such as TVs,
audio systems and induction cookers,
or medical electrical equipment, such
as low-frequency therapy equipment.
■ Carrying the electronic key on your
person
Carry the electronic key 3.9 in. (10 cm)
or more away from electric appliances
that are turned on. Radio waves emitted
from electric appliances within 3.9 in. (10
cm) of the electronic key may interfere
with the key, causing the key to not func-
tion properly.
■ In case of a smart access system with
push-button start malfunction or
other key-related problems

P.359
■ When an electronic key is lost

P.358
■ Handling the card key
● Do not apply excess force when insert-
ing the mechanical key into the card
key. Doing so may damage the card
key.
● If the battery or card key terminals get
wet, the battery may corrode.
If the key is dropped into water, or if
drinking water etc. is spilled on the key,
immediately remove the battery cover
and wipe the battery and terminals. (To
remove the battery cover, lightly grasp
and pull it.) If the battery is corroded,
have your Lexus dealer replace the
battery.
● Do not crush the battery cover or use
a screwdriver to remove the battery
cover.
Forcibly removing the battery cover
may bend or damage the key.
● If the battery cover is frequently
removed, the battery cover may
become loose.