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3-1. Key information
■Key battery depletion
X Vehicles without a smart entry & start system
If the wireless remote control function does not operate, the battery may be
depleted. Replace the battery when necessary. (→P. 503)
X Vehicles with a smart entry & start system
●The standard battery life is 1 to 2 years.
●If the battery becomes low, an alarm will sound in the cabin when the engine
stops. (→P. 545)
●As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery
when necessary. (→P. 503)
• The smart entry & start 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.
●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
• Table lamps
• Induction cookers
■When the key battery is fully depleted
→P. 503
■Confirmation of the registered key number (vehicles with a smart entry &
start system)
The number of keys already registered to the vehicle can be confirmed. Ask
any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional for details.
■If a wrong key is used (except left-hand drive vehicles without a smart
entry & start system)
The key cylinder rotates freely, isolated from the internal mechanism.
■Customization
Settings (e.g. wireless remote control system) can be changed.
(Customizable features: →P. 628)