2015 Jeep Grand Cherokee User Guide - Page 178

SRT Launch Mode - If Equipped This system maximizes acceleration traction for straight line racing. To use Launch Mode please follow the steps below: 1. Bring vehicle to complete stop on a level track surface with the engine running. 2. Set the steering wheel for straight ahead driving. 3. Fully press the brake pedal. 4. Press and release the "LAUNCH" Button. 5. Press the accelerator pedal to the floor. NOTE: If the cluster launch DID message indicates all conditions are correct for launch and the throttle is pressed to the floor quickly (within approximately 1/2 second) the system will hold the engine speed to a preset speed (below the engine rev limiter speed). 6. Release the brake pedal. Pressing the launch control button when launch control is active will deactivate launch control. NOTE: • Launch Mode brings the engine to optimum RPM and waits for the driver to release the brake. Launch Mode then uses engine throttle only to achieve controlled wheelslip for maximum acceleration through 62 mph (100 km/h). • Launch Mode can be initiated in any of the Select Trac Modes. • Launch Mode is not available until the 500 mile (805 km) break-in has been achieved. 176