Lexus LS460 Owner's Manual page 543

Connect the jumper cables according to the following procedure:
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Connect a positive jumper cable clamp to the positive (+) battery
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terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the pos-
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itive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery terminal
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on the second vehicle.
Connect the clamp at the other end of the negative cable to a solid,
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stationary, unpainted metallic point away from the battery and any
moving parts, as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed
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slightly and maintain at that level for approximately 5 minutes to
recharge the battery of your vehicle.
Open and close any of the doors of your vehicle with the engine switch
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off.
Maintain the engine speed of the second vehicle and start the engine of
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your vehicle by turning the engine switch to IGNITION ON mode.
Once the vehicle's engine has started, remove the jumper cables in the
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exact reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at your Lexus dealer as
soon as possible.
LS460/LS460L_U (OM50G04U)
7-2. Steps to take in an emergency
543
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