Toyota 2012 Prius C Owner's Manual page 78

1-3. Opening, closing and locking the doors
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Electronic key battery depletion
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The standard battery life is 1 to 2 years.
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If the battery becomes low, an alarm will sound in the cabin when the
hybrid system stops. (→P. 449)
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As the electronic key always receives radio waves, the battery will
become depleted even if the electronic key is not used. The following
symptoms indicate that the electronic key battery may be depleted.
Replace the battery when necessary. (→P. 397)
• The smart key system or the wireless remote control does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
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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
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When the electronic key battery is fully depleted
→P. 397
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If the smart key system has been deactivated in a customized setting
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Locking and unlocking the doors: Use the wireless remote control or
mechanical key. (→P. 61, 473)
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Starting the hybrid system and changing "POWER" switch modes:
→P. 474
Stopping the hybrid system: →P. 474
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Customization that can be configured at Toyota dealer
Settings (e. g. operation signals) can be changed.
(Customizable features: →P. 516)
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