2008 Chrysler 300 Owner Manual - Page 313

STARTING AND OPERATING 313 Never use "P" (Park) while the vehicle is in motion. Apply the parking brake when leaving the vehicle in this range. When parking on a flat surface, place the gear selector in the "P" (Park) position first, and then apply the parking brake. When parking on a hill, it is important to set the parking brake before placing the gear selector in "P" (Park), otherwise the load on the transmission locking mechanism may make it difficult to move the selector out of park. As an added precaution, turn the front wheels toward the curb on a downhill grade and away from the curb on an uphill grade. 5 Selector Lever Gear Ranges "P" (Park) "P" (Park) supplements the parking brake by locking the transmission. The engine can be started in this range.