2012 Lexus HS 250h Owners Manual - Page 446

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Before recharging

When recharging, the 12-volt battery produces hydrogen gas which is flammable

and explosive. Therefore, observe the following precautions before recharging:

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If recharging with the 12-volt battery installed on the vehicle, be sure to discon-

nect the ground cable.

●

Make sure the power switch on the charger is off when connecting and discon-

necting the charger cables to the 12-volt battery.

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After recharging/reconnecting the 12-volt battery

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Unlocking the doors using the smart key system may not be possible immedi-

ately after reconnecting the 12-volt battery. If this happens, use the wireless

remote control or the mechanical key to lock/unlock the doors.

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Start the hybrid system with the “POWER” switch in ACCESSORY mode. The

hybrid system may not start with the “POWER” switch turned OFF. However,

the hybrid system will operate normally from the second attempt.

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The “POWER” switch mode is recorded by the vehicle. If the battery is recon-

nected, the vehicle will return the “POWER” switch mode to the status it was in

before the battery was disconnected. Make sure to turn off the power before

disconnect the battery. Take extra care when connecting the battery if the

“POWER” switch mode prior to discharge is unknown.

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4-3. Do-it-yourself maintenance

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Exterior

Make sure that the 12-volt battery terminals are not corroded and

that there are no loose connections, cracks or loose clamps.

Terminals

Hold-down clamp