Lexus IS250 2009, Service Manual

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30
1-2. Opening, closing and locking the doors and trunk
n
Battery-saving function
In the following circumstances, the entry function is disabled in order to prevent the
vehicle and electronic key batteries from discharging.
l
When the entry function has not been used for a month or more
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When the electronic key has been left within approximately 3 ft. (1 m) of the
vehicle for 10 minutes or more
The system will resume operation when
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The vehicle is locked using the door handle lock switch.
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The vehicle is locked/unlocked using the wireless remote control function.
(
→
P. 36)
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The vehicle is locked/unlocked using the mechanical key. (
→
P. 417)
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Electronic key battery depletion
l
The standard battery life is 1 to 2 years. (The card key battery life is about a year
and a half.)
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The battery becomes depleted even if the electronic key is not used because
the key always transmits radio waves. If the smart access system with push-but-
ton start or the wireless remote control does not operate, or the detection area
becomes smaller, the battery may be depleted. Replace the battery when nec-
essary.
(
→
P. 345)
l
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
• Glass top ranges
• Table lamps
n
To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get the
electronic key too close to the vehicle when operating the system from the outside
of the vehicle.
Depending on the position and holding condition of the electronic key, the key may
not be detected correctly and the system may not operate properly. (The alarm may
go off accidentally, or the door lock prevention may not function.)