2006 Cadillac STS Owner's Manual - Page 174

Using Adaptive Cruise Controls on Hills and When Towing a Trailer Erasing Set Speed Memory When you turn the Adaptive Cruise Control switch or the ignition off, the set speed memory is erased. Other Messages There are three messages that may appear on the DIC. They are SERVICE RADAR CRUISE, RADAR CRUISE NOT READY and CLEAN RADAR. These messages will appear to indicate a problem with the Adaptive Cruise Control. See DIC Warnings and Messages on page 3-79 for more information. How well Adaptive Cruise Control will work on hills and when towing a trailer depends on your speed, vehicle load, traffic conditions and the steepness of the hills. It may not detect a vehicle in your lane while driving on hills. When going up steep hills, you may want to use the accelerator pedal to maintain your speed. When going downhill when towing a trailer, you may want to brake to keep your speed down. Applying the brake disengages the system. You may choose not to use Adaptive Cruise Control on steep hills when towing a trailer. Cleaning the System The radar can become blocked by snow, ice or dirt. If so, you may need to turn off the engine and clean the lens. Remember, do not use Adaptive Cruise Control in icy conditions, or when visibility is low, such as in fog, rain or snow. The emblem/lens is located in the center of the grille. To clean the emblem/lens, wipe the surface with a soft cloth. After cleaning the emblem/lens, engage the Adaptive Cruise Control. If you are unable to do so, see your dealer. Disengaging Adaptive Cruise Control To disengage the system, apply the brake pedal or move the Adaptive Cruise Control switch to off. Adaptive Cruise Control information will not appear on the HUD when the system is not engaged. 3-30