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3-1. Key information
TUNDRA_OM_USA_OM0C025U_20MY
n Key battery depletion (type B or type C)
Type B
If the wireless remote control function does not operate, the battery may be
depleted. Replace the battery when necessary. (→P. 447)
Type C
l The standard battery life is 1 to 2 years.
l If the battery becomes low, an alarm will sound in the cabin when the engine
stops. (→P. 499)
l 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. 447)
• The smart key system or the wireless remote control does not oper-
ate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
l 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
n Replacing the battery (type B or type C)
→P. 447
n Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask
your Toyota dealer for details.
n Customization (type B or type C)
Settings (e.g. wireless remote control system) can be changed.
(Customizable features: →P. 560)
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