2008 Lexus LS 460 Owners Manual - Page 723

5-2. Steps to take in an emergency Start the engine of the second vehicle. Increase the engine speed slightly and maintain 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. STEP 5 Maintain the engine speed of the second vehicle and turn the ignition switch to IGNITION ON mode, then start the engine. STEP 6 Once the engine has started, remove the jumper cables in the exact reverse order in which they were connected. Once the engine starts, have the vehicle inspected at your Lexus dealer as soon as possible. STEP 3 n Starting the engine when the battery is discharged The engine cannot be started by push-starting. n Avoiding a discharged battery l Turn off the headlights and the audio system while the engine is turned off. l Turn off any unnecessary electrical components when the vehicle is running at a low speed for an extended period, such as in heavy traffic. n When the battery is removed or discharged 5 When trouble arises The tire pressure warning system must be initialized. (→P. 571) 661