Toyota 2015 Prius Owner's Manual page 77

If the smart key system does not operate properly
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Locking and unlocking the doors: Use the mechanical key. (P. 553)
Starting the hybrid system: P. 554
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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. 68)
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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. 464)
• 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
• Induction cookers
• Table lamps
When the electronic key battery is fully depleted
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P. 464
Customization
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Settings (e.g. smart key system) can be changed.
(Customizable features P. 602)
PRIUS_OM_OM47A17U_DVD_(U)
1-3. Opening, closing and locking the doors
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