2008 Jeep Grand Cherokee Owner's Manual - Page 138

138 UNDERSTANDING THE FEATURES OF YOUR VEHICLE Using Speed Control On Hills The automatic transmission may downshift on hills to maintain the vehicle set speed. NOTE: The speed control system maintains speed up and down hills. A slight speed change on moderate hills is normal. On steep hills a greater speed loss or gain may occur so it may be preferable to drive without speed control. ELECTRONIC BRAKE CONTROL SYSTEM Your vehicle is equipped with an advanced electronic brake control system that includes ABS (Anti-Lock Brake System), TCS (Traction Control System), BAS (Brake Assist System), ERM (Electronic Roll Mitigation), and ESP (Electronic Stability Program). All five of these systems work together to enhance vehicle stability and control in various driving conditions. Also, your vehicle is equipped with TSC (Trailer Sway Control) and, if it has 4WD with the NV245 two-speed transfer case, HSA (Hill Start Assist) and HDC (Hill Descent Control). ABS (Anti-Lock Brake System) This system aids the driver in maintaining vehicle control under adverse braking conditions. The system controls hydraulic brake pressure to prevent wheel lock-up and help avoid skidding on slippery surfaces during braking. Refer to "Anti-Lock Brake System" in Section 5 of this manual for more information about ABS.