2007 Jeep Liberty Owner's Manual - Page 240

240 STARTING AND OPERATING PARKING BRAKE To set the parking brake, pull the lever up as firmly as possible. When the parking brake is applied with the ignition ON, the "Brake Warning Light" in the instrument cluster will light. To release the parking brake, pull up slightly, press the center button, then lower the lever completely. NOTE: The instrument cluster "Brake Warning Light" indicates only that the parking brake is applied. You must be sure the parking brake is fully applied before leaving the vehicle. Parking Brake Be sure the parking brake is firmly set when parked, and the gear shift lever is in the P (Park) position (automatic transmission) or R (Reverse) or 1st gear (manual transmission). When parking on a hill, you should apply the parking brake before placing the gear shift lever in P (Park), otherwise the load on the transmission locking mechanism may make it difficult to move the selector out of P (Park).