Battery-Saving Function; Electronic Key Battery-Saving Function - Lexus LX 570 2016 Service Manual

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3-2. Opening, closing and locking the doors

Battery-saving function

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The battery-saving function will be activated in order to prevent the electronic key bat-
tery and the battery from being discharged while the vehicle is not in operation for a long
time.
In the following situations, the smart access system with push-button start may take
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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-button start has not been used for 5 days or
longer.
If the smart access system with push-button start has not been used for 14 days or
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longer, the doors cannot be unlocked at any doors except the driver' s door. In this case,
take hold of the driver' s door handle, or use the wireless remote control or the mechan-
ical key, to unlock the doors.

Electronic Key Battery-Saving Function

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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.
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 system with push-button start, wireless remote
control and engine immobilizer system from operating properly.
(Ways of coping: P. 550)
When the electronic key battery is depleted
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Near a TV tower, electric power plant, gas station, radio station, large display, airport or
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other facility that generates strong radio waves or electrical noise
When the electronic key is in contact with, or is covered by the following metallic
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objects
• Portable radio, cellular phone, cordless phone or other wireless communication
device
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
When other wireless keys (that emit radio waves) are being used nearby
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