2009 Chrysler Aspen Owner Manual Supplement Hybrid - Page 66

64 STARTING AND OPERATING Upon initial start-up in cold weather, the power steering pump may make noise for a short period of time. This noise should be considered normal, and does not in any way damage the steering system. WARNING! Continued operation with reduced power steering assist could pose a safety risk to yourself and others. Service should be obtained as soon as possible. ELECTRONIC BRAKE CONTROL SYSTEM Your vehicle is equipped with an advanced electronic brake control system that includes Anti-Lock Brake System (ABS), Brake Assist System (BAS), Traction Control System (TCS), Electronic Roll Mitigation (ERM), Electronic Stability Program (ESP), Trailer Sway Control (TSC) and Hill Start Assist (HSA). All seven systems work together to enhance vehicle stability and control in various driving conditions, and are commonly referred to as ESP. Hill Start Assist (HSA) The HSA system is designed to assist the driver when starting a vehicle from a stop on a hill. HSA will maintain the level of brake pressure the driver applied for a short period of time after the driver takes their foot off of the brake pedal. If the driver does not apply the throttle during this short period of time, the system will release brake pressure and the vehicle will roll down the hill. The CAUTION! Prolonged operation of the steering system at the end of the steering wheel travel will increase the steering fluid temperature and should be avoided when possible. Damage to the power steering pump may occur.