2012 Jeep Wrangler Owner Manual - Page 422

420 STARTING AND OPERATING controls the wheel spin across a driven axle. If one wheel reduce brake pedal pressure unless braking is no longer on a driven axle is spinning faster than the other, the desired. Once the brake pedal is released, the BAS is system will apply the brake of the spinning wheel. This deactivated. will allow more engine torque to be applied to the wheel WARNING! that is not spinning. This feature remains active even if TCS and ESC are in either the "Partial Off" or "Full Off" The Brake Assist System (BAS) cannot prevent the modes. Refer to "Electronic Stability Control (ESC)" in natural laws of physics from acting on the vehicle, this section for further information. nor can it increase the traction afforded by prevailing Brake Assist System (BAS) road conditions. The BAS cannot prevent collisions, The BAS is designed to optimize the vehicle's braking including those resulting from excessive speed in capability during emergency braking maneuvers. The turns, driving on very slippery surfaces, or hydrosystem detects an emergency braking situation by sens- planing. The capabilities of a BAS-equipped vehicle ing the rate and amount of brake application and then must never be exploited in a reckless or dangerous applies optimum pressure to the brakes. This can help manner which could jeopardize the user's safety or reduce braking distances. The BAS complements the the safety of others. anti-lock brake system (ABS). Applying the brakes very quickly results in the best BAS assistance. To receive the Hill Start Assist (HSA) benefit of the system, you must apply continuous brak- The HSA system is designed to assist the driver when ing pressure during the stopping sequence. Do not starting a vehicle from a stop on a hill. HSA will maintain