Lexus is300 2021, Service Manual

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3-2. Opening, closing and locking the doors and trunk
●
When an interior alarm sounds continu-
ously
■ If a warning message is displayed indi-
cating that there is a malfunction in the
smart access system with push-button
start
An attempt was made to lock the doors
using the smart access system with
push-button start while the electronic key
was still inside the vehicle. Retrieve the elec-
tronic key from the vehicle and lock the
doors again.
■
Battery-saving function
The battery-saving function will be acti-
vated in order to prevent the electronic key
battery and the vehicle battery from being
discharged while the vehicle is not in opera-
tion for a long time.
● In the following situations, the smart
access system with push-button start may
take some time to unlock the doors.
• The electronic key has been left within
approximately 6 ft. (2 m) of the outside of
the vehicle for 10 minutes or longer.
• The smart access system with push-but-
ton start has not been used for 5 days or
longer.
● If the smart access system with push-but-
ton start has not been used for 14 days or
longer, the doors cannot be unlocked at
any door except the driver’s door. In this
case, hold the driver’s door handle, or use
the wireless remote control or mechani-
cal key, to unlock the doors.
■
Electronic Key Battery-Saving Function
When battery-saving mode is set, battery
depletion is minimized by stopping the elec-
tronic key from receiving radio waves.
Press twice while pressing and holding
. Confirm that the electronic key indica-
tor flashes 4 times.
While the battery-saving mode is set, the
smart access system with push-button start
cannot be used. To cancel the function,
press any of the electronic key buttons.
■
Conditions affecting operation
The smart access system with push-button
start uses weak radio waves. In the following
situations, the communication between the
electronic key and the vehicle may be
affected, preventing the smart access sys-
tem with push-button start, wireless remote
control and engine immobilizer system
from operating properly. (Ways of coping:

P.359)
●
When the electronic key battery is
depleted
●
Near a TV tower, electric power plant,
Situation
Correction
procedure
An attempt was made to
lock the vehicle while a
door was open.
Close all of the
doors and lock
the doors
again.
The trunk was closed
while the electronic key
was still inside the trunk
and all the doors were
locked.
Retrieve the
electronic key
from the trunk
and close the
trunk lid.
Situation
Correction
procedure
The engine switch was
turned to ACCESSORY
mode while the driver’s
door was open (The
driver’s door was opened
when the engine switch
was in ACCESSORY
mode).
Turn the engine
switch off and
close the
driver’s door.
The engine switch was
turned off while the
driver’s door was open.
Close the
driver’s door.