2007 Cadillac DTS Owner's Manual - Page 185

Using Adaptive Cruise Control on Hills and When Towing a Trailer Erasing Set Speed Memory When you press the Adaptive Cruise Control button or turn the ignition off, the set speed memory is erased. Other Messages There are three additional 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 239 for more information. How well Adaptive Cruise Control will work on hills and when towing a trailer depends on your vehicle's 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 vehicle's speed. When going downhill, especially 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, especially 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, try to engage the Adaptive Cruise Control. If you are unable to do so, see your dealer. 185 Disengaging Adaptive Cruise Control To turn off the system, apply the brake pedal, press the cancel button, or press the Adaptive Cruise Control button.