After Recharging/Reconnecting The Battery (Vehicles With Smart Key System); Chemicals In The Battery - Toyota 4RUNNER Owner's Manual

4-3. Do-it-yourself maintenance
After recharging/reconnecting the battery (vehicles with smart key sys-
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tem)
Unlocking the doors using the smart key system may not be possible
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immediately after disconnecting the battery. If this happens, use the wire-
less remote control or the mechanical key to lock/unlock the doors.
Start the engine with the "ENGINE START STOP" switch in ACCES-
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SORY mode. The engine may not start with the "ENGINE START STOP"
switch turned OFF. However, the engine will operate normally from the
second attempt.
The "ENGINE START STOP" switch mode is recorded by the vehicle. If
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the battery is reconnected, the vehicle will return the "ENGINE START
STOP" switch mode to the status it was in before the battery was discon-
nected. Make sure to turn off the engine before disconnect the battery.
Take extra care when connecting the battery if the "ENGINE START
STOP" switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts, contact your Toyota
dealer.
CAUTION

Chemicals in the battery

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Batteries contain poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk of death
or serious injury, take the following precautions while working on or near the
battery:
Do not cause sparks by touching the battery terminals with tools.
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Do not smoke or light a match near the battery.
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Avoid contact with eyes, skin and clothes.
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l Never inhale or swallow electrolyte.
Wear protective safety glasses when working near the battery.
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l Keep children away from the battery.
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