2010 Jeep Wrangler Owner's Manual - Page 372

STARTING AND OPERATING 371 WARNING! (Continued) • Always fully apply the parking brake when leaving your vehicle or it may roll and cause damage or injury. Also, be certain to leave an automatic transmission in PARK, a manual transmission in REVERSE or first gear. Failure to do so may cause the vehicle to roll and cause damage or injury. braking conditions. The system operates with a separate computer to modulate hydraulic pressure to prevent wheel lock-up and help avoid skidding on slippery surfaces. All vehicle wheels and tires must be the same size and type, and tires must be properly inflated to produce accurate signals for the computer. CAUTION! If the "Brake Warning Light" remains on with the parking brake released, a brake system malfunction is indicated. Have the brake system serviced by an authorized dealer immediately. WARNING! Significant over or under-inflation of tires, or mixing sizes of tires or wheels on the vehicle can lead to loss of braking effectiveness. 5 The Anti-Lock Brake System conducts a low speed selftest at about 12 mph (20 km/h). If for any reason your ANTI-LOCK BRAKE SYSTEM foot is on the brake when the vehicle reaches 12 mph The Anti-Lock Brake System (ABS) is designed to aid the (20 km/h), this check will be delayed until 25 mph driver in maintaining vehicle control under adverse (40 km/h).