Lexus CT200h Operating Manual page 486

486
7-3. Do-it-yourself maintenance
Before recharging
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When recharging, the 12-volt battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following precautions before recharging:
If recharging with the 12-volt battery installed on the vehicle, be sure to disconnect the
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ground cable.
Make sure the power switch on the charger is off when connecting and disconnecting
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the charger cables to the 12-volt battery.
After recharging/reconnecting the 12-volt battery
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Unlocking the doors using the smart access system with push-button start may not be
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possible immediately after reconnecting the 12-volt battery. If this happens, use the
wireless remote control or the mechanical key to lock/unlock the doors.
Start the hybrid system with the power switch in ACCESSORY mode. The hybrid sys-
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tem may not start with the power switch turned off. However, the hybrid system will
operate normally from the second attempt.
The power switch mode is recorded by the vehicle. If the 12-volt battery is reconnected,
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the vehicle will return the power switch mode to the status it was in before the 12-volt
battery was disconnected. Make sure to turn off the power before disconnect the 12-
volt battery. Take extra care when connecting the 12-volt battery if the power switch
mode prior to discharge is unknown.
Restart the hybrid system, depress the brake pedal, and confirm that it is possible to
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shift into each shift position.
If the system will not start even after multiple attempts at all methods above, contact your
Lexus dealer.
WARNING
Chemicals in the 12-volt battery
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The 12-volt battery contains 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 12-volt battery:
Do not cause sparks by touching the 12-volt battery terminals with tools.
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Do not smoke or light a match near the 12-volt battery.
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Avoid contact with eyes, skin and clothes.
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Never inhale or swallow electrolyte.
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Wear protective safety glasses when working near the 12-volt battery.
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Keep children away from the 12-volt battery.
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Where to safely charge the 12-volt battery
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Always charge the 12-volt battery in an open area. Do not charge the 12-volt battery in
a garage or closed room where there is insufficient ventilation.
How to recharge the 12-volt battery
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Only perform a slow charge (4.2 A or less). The 12-volt battery may explode if charged
at a quicker rate.
CT200h_OM_OM76174U_(U)
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