If The Vehicle Battery Is Discharged; Connecting The Jumper Cables - Lexus 2008 ES350 Owner's Manual

5-2. Steps to take in an emergency

If the vehicle battery is discharged

The following procedures may be used to start the engine if the vehicle's
battery is discharged.
You can call your Lexus dealer or 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 Lexus following the steps
below.
STEP 1
STEP 2

Connecting the jumper cables.

If required, remove all vent plugs from the booster battery. Lay a
cloth over the open vents on the booster battery. (This helps reduce
the explosion hazard, personal injuries and burns.)
Positive (+) battery terminal on your vehicle
Positive (+) battery terminal on the second vehicle
Negative (-) battery terminal on the second vehicle
Connect the jumper cable to ground on your vehicle as shown in the
illustration.
402
Remove the cover.