Toyota PRIUS C 2019 Manual page 121

■
Key battery depletion
Vehicles without a smart key system

If the wireless remote control function does not operate, the battery may be
depleted. Replace the battery when necessary. (P. 449)
Vehicles with a smart key system

●
The standard battery life is 1 to 2 years.
●
If the battery becomes low, an alarm will sound in the cabin when the hybrid
system stops. (P. 500)
● 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. 449)
• 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.
●
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
■
Replacing the battery
P. 449
■ Confirmation of the registered key number (vehicles with a smart key
system)
The number of keys already registered to the vehicle can be confirmed. Ask
your Toyota dealer for details.
■ If a wrong key is used (vehicles with a smart key system)
The key cylinder rotates freely to isolate inside mechanism.
■
Customization that can be configured at Toyota dealer
Settings (e.g. wireless remote control system) can be changed.
(Customizable features: P. 558)
PRIUS c_U
3-1. Key information
121
3