Lexus UX 250h 2020, Owner'S Manual

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3-2. Opening, closing and locking the doors
3
Before drivi
ng
■
If “Key Detected in Vehicle” is shown on
the multi-information display
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 electronic
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 12-volt 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 in an
area of 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 doors except the driver’s door. In this
case, take hold of the driver’s door han-
dle, or use the wireless remote control or
the mechanical key, to unlock the doors.
■ Turning an electronic key to battery-
saving mode
● When battery-saving mode is set, battery
depletion is minimized by stopping the
electronic key from receiving radio
waves.
Press twice while pressing and
holding .
Confirm that the electronic key indicator
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.
●
Electronic keys that will not be used for
long periods of time can be set to the bat-
tery-saving mode in advance.
■ 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 immobilizer system from oper-
ating properly. (Ways of coping:

P.403)
● When the electronic key battery is
depleted
● Near a TV tower, electric power plant,
gas station, radio station, large display,
airport or other facility that generates
strong radio waves or electrical noise
● When carrying a portable radio, cellular
phone, cordless phone or other wireless
communication device
● When the electronic key is in contact
with, or is covered by the following metal-
lic objects
• Cards to which aluminum foil is attached
Situation
Correction proce-
dure
The power switch
was turned to ACC
while the driver’s
door was open (The
driver’s door was
opened when the
power switch was in
ACC).
Turn the power
switch off and close
the driver’s door.
The power switch
was turned off while
the driver’s door was
open.
Close the driver’s
door.