User Manual - Page 274

For 2019 Prius Prime.

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272
PRIUS PRIME_OM_OM47D13U_(U)
4-1. Key information
Electronic key battery depletion
The standard battery life is 1 to 2 years.
If the battery becomes low, an alarm will sound in the cabin and a message
will be displayed on the multi-information display when the hybrid system
stops.
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. 633)
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.
You can replace the battery by yourself (P. 633). However, as there is a
danger that the electronic key may be damaged, it is recommended that
replacement is carried out by your Toyota dealer.
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
Table lamps
Induction cookers
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