2009 Lexus IS 350 Owners Manual - Page 418

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 Remove the engine compartment covers. (→P. 312) Connecting the jumper cables. 5 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. STEP 3 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. STEP 4 Open and close any of the doors with the "ENGINE START STOP" switch OFF. When trouble arises 421