Lexus CT200H Manual page 129


Electronic key battery depletion

The standard battery life is 1 to 2 years. (The card key battery life is about a
year and a half.)

If the battery becomes low, an alarm will sound in the cabin when the hybrid
system stops. (P. 589)

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. 530)
• The smart entry & start 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.

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
• Induction cookers
• Table lamps

Replacing the battery
P. 530

Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask any
authorized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional for details.

If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.
CT200h_OM_OM76102E_(EE)
3-1. Key information
129
3