Lexus 2015 RX350 Owner's Manual page 702

4-3. Do-it-yourself maintenance
Use a CR1632 lithium battery
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Batteries can be purchased at your Lexus dealer, local electrical appliance
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shops or camera stores.
Replace only with the same or equivalent type recommended by the manufac-
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turer.
Dispose of used batteries according to the local laws.
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If the electronic key battery is discharged
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The following symptoms may occur:
The smart access system with push-button start and wireless remote control will
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not function properly.
The operational range is reduced.
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When the card key battery needs to be replaced (if equipped)
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The battery for the card key is available only at Lexus dealers. Your Lexus dealer
can replace the battery for you.
CAUTION
Removed battery and other parts
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These parts are small and if swallowed by a child, they can cause choking. Keep
away from children. Failure to do so could result in death or serious injury.
NOTICE
For normal operation after replacing the battery
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Observe the following precautions to prevent accidents:
Always work with dry hands.
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Moisture may cause the battery to rust.
Do not touch or move any other components inside the remote control.
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Do not bend either of the battery terminals.
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I n f o r ma t i o n P r o v i d e d b y :