2008 Toyota Highlander Owners Manual - Page 1114

5 -2 . St e ps t o t a k e in a n e m e rge nc y I f t he bat t e r y is discha rge d The following procedures may be used to start the engine if the vehicle's battery is discharged. You can call your Toyota 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 Toyota following the steps below. STEP 1 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. 520