Lexus 2013 GS 350 Owner's Manual page 717

If the vehicle battery is discharged
The following procedures may be used to start the engine if the vehi-
cle's 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 ( P. 612)
1
Connect the jumper cables according to the following procedure:
2
Connect a positive jumper cable clamp to the positive (+) battery
1
terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the pos-
2
itive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery terminal
3
on the second vehicle.
Connect the clamp at the other end of the negative cable to a solid,
4
stationary, unpainted metallic point away from the battery and any
moving parts, as shown in the illustration.
GS350_U (OM30C34U)
7-2. Steps to take in an emergency
Type A
Type B
I n f o r ma t i o n P r o v i d e d b y :
7