If the vehicle 12-volt battery is discharged
The following procedures may be used to start the hybrid system if the
12-volt battery is discharged.
You can also call your Lexus dealer or a qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt battery, you can jump start your vehicle by following the steps below.
Open the hood and remove the engine compartment covers.
Remove the fuse box cover and open the exclusive jump starting terminal cover.
Connect the jumper cables according to the following procedure:
1. Connect a positive jumper cable clamp to the exclusive jump starting
terminal on your vehicle
2. Connect a positive jumper cable clamp to the positive (+) battery
terminal on the second vehicle
3. Connect a negative cable clamp to the negative (-) battery terminal
on the second vehicle
4. Connect the clamp at the other end of the negative cable to a solid, stationary, unpainted metallic point away from the exclusive jump starting terminal and any moving parts, as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed slightly and maintain that level for approximately 5 minutes to recharge the 12-volt battery of your vehicle.
Open and close any of the doors of your vehicle with the “POWER” switch off.
Maintain the engine speed of the second vehicle and start the hybrid system of your vehicle by turning the “POWER” switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator does not comes on, contact your Lexus dealer.
Once the hybrid system has started, remove the jumper cables in the exact reverse order from which they were connected.
Once the hybrid system starts, have the vehicle inspected at your Lexus dealer as soon as possible.
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
To prevent 12-volt battery discharge
Turn off the headlights and the audio system while the hybrid system is off.
Turn off any unnecessary electrical components when the vehicle is running at
low speed for an extended period, such as in heavy traffic.
When the 12-volt battery is removed or discharged
The power back door must be initialized.
The hybrid system may not start.
When handling jumper cables When connecting the jumper cables, ensure that they do not become entangled in the cooling fans or belt.
Avoiding accidental short-circuits When connecting jumper cables, observe the following precautions: Make sure each jumper cable is connected to the correct terminal.
Do not allow the ends of the jumper cable used for the “+” terminals to come
contact with any other parts or metal surfaces in the area, such as brackets or unpainted metal.
Do not allow the “+” and “-” terminals of the jumper cables to come into
with each other.
Exclusive jump starting terminal precaution
The exclusive jump starting terminal is to be used when charging the 12-volt
from another vehicle in an emergency. It cannot be used to jump start another vehicle.
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