Lexus GS 450h Manual page 29

Roadside Assistance (Continued)
Jump Starting
The 12-Volt auxiliary battery may be jump started if the vehicle does not start
and the instrument cluster gauges are dim or off after depressing the brake
pedal and pushing the power button.
The 12-Volt auxiliary battery is located in the trunk. The trunk opener will
not operate if the auxiliary battery is discharged. Instead use the metal cut
key hidden in the smart key to open the trunk.
•
Open the trunk, and remove the 12-Volt auxiliary battery cover on the
driver side.
•
Connect the positive jumper cable to the positive battery post.
•
Connect the negative jumper cable to the negative battery post.
•
Place the smart key in proximity to the vehicle, depress the brake pedal,
and push the power button.
NOTES:
If the vehicle does not recognize the smart key after connecting the
booster battery to the vehicle, open and close the driver door when the
vehicle is shut off.
If the smart key internal battery is dead, hold the smart key next to the
power button during the start sequence.
•
The high voltage HV battery pack cannot be jump started.
Immobilizer & Anti-Theft Alarm
The GS450h is equipped with an immobilizer system and an anti-theft alarm
as standard equipment.
•
The vehicle can be started only with a registered smart key.
•
To disarm the anti-theft alarm, unlock the door by using the smart key
button, hidden metal cut key, or using the door handle touch sensor.
Engaging the ignition-on mode or starting the vehicle will also disarm the
anti-theft alarm.
12-Volt Auxiliary
Battery
-26-
Clip
Optional 12-Volt Battery for Active
Stabilizer Suspension System
Jumper Cable Connections