2007 Lexus LX 470 Owners Manual - Page 373

5-2. Steps to take in an emergency If the battery is discharged The following procedures may be used to start the engine if the battery is discharged. You can call your Lexus dealer, Roadside Assistance or Lexus Customer Service. 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 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 vehicles as shown in the illustration. STEP 2 Start the engine of the second vehicle. Increase the engine speed slightly and maintain at that level for approximately 5 minutes to recharge the battery of your vehicle. 360