2009 Jeep Grand Cherokee Owner Manual SRT8 - Page 280

278 STARTING AND OPERATING To start the engine, the transmission must be in PARK or NEUTRAL. From any ignition state, press and hold the brake pedal while pressing the ENGINE START/STOP button. The system takes over and attempts to start the vehicle. If the vehicle fails to start, the starter will disengage automatically after 10 seconds. If you wish to stop the cranking of the engine prior to the engine starting, press the button again. Using Fob With Integrated Key (Tip Start) NOTE: Normal starting of either a cold or a warm engine is obtained without pumping or depressing the accelerator pedal. Do not press the accelerator. Use the Fob with Integrated Key to briefly turn the ignition switch to the START position and release it as soon as the starter engages. The starter motor will continue to run, and it will disengage automatically when the engine is running. If the engine fails to start, the starter will disengage automatically in 10 seconds. If this occurs, turn the ignition switch to the LOCK position, wait 10 to 15 seconds, then repeat the normal starting procedure. To Turn Off The Engine Using ENGINE START/STOP Button Place the shift lever in PARK, then press and release the ENGINE START/STOP button. If the shift lever is not in PARK, the ENGINE START/STOP button must be held for two seconds and the ignition state changes to ACCESSORY (ACC). Regardless if the ignition state changes to ACCESSORY (ACC) or OFF, the engine is shut off. Extremely Cold Weather (Below Ϫ20°F or Ϫ29°C) To ensure reliable starting at these temperatures, use of an externally powered electric engine block heater (available from your authorized dealer) is recommended.