Lexus IS220d 2012 Manual page 44

1-2. Opening, closing and locking the doors and trunk

Battery-saving function
In the following circumstances, the entry function is disabled in order to
prevent the vehicle and electronic key batteries from discharging.

When the entry function has not been used for a month or more

When the electronic key has been left within approximately 1 m (3 ft.) of
the vehicle for 10 minutes or more
The system will resume operation when

The vehicle is locked using the door handle lock switch.

The vehicle is locked/unlocked using the wireless remote control func-
tion.
(P. 55)

The vehicle is locked/unlocked using the mechanical key. (P. 516)

Electronic key battery depletion

The standard battery life is 1 to 2 years. (The card key battery life is
about a year and a half.)

If the battery becomes low, an alarm will sound in the cabin when the
engine stops. (P. 481)

The battery becomes depleted even if the electronic key is not used
because the key always receives radio waves. If the smart entry & start
system or the wireless remote control does not operate, or the detection
area becomes smaller, the battery may be depleted. Replace the battery
when necessary.
(P. 431)

To avoid serious deterioration, do not leave the electronic key within 1 m
(3 ft.) 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
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IS250/220d/200d_EE