2005 Lexus ES 330 Owners Manual - Page 319

IN CASE OF AN EMERGENCY JUMP STARTING PROCEDURE 1. If the booster battery is installed in another vehicle, make sure the vehicles are not touching. Turn off all unnecessary lights and accessories. When boosting, use the battery of matching or higher quality. Any other battery may be difficult to jump start with. If jump starting is difficult, charge the battery for several minutes. 40E128 2. If required, remove all the 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.) If the booster battery is an extended maintenance interval battery, it is not necessary to remove the vent plugs. 3. If the engine in the vehicle with the booster battery is not running, start it and let it run for about 5 minutes. During jump starting, run the engine at about 2000 rpm with the accelerator pedal lightly depressed. " 5 Discharged battery " 6 Booster battery 301