2009 Cadillac STS-V Owner's Manual - Page 166

Detecting the Vehicle Ahead The vehicle ahead symbol will only appear on the HUD when a vehicle ahead of you is detected in your path. If this symbol does not appear, or disappears briefly, FCA will not respond to vehicles you may see ahead. The symbol may disappear on curves, highway exit ramps, or hills. Also, when another vehicle enters the same lane as you, the FCA system will not detect the vehicle until it is completely in your driving lane. { CAUTION: FCA may not detect and warn soon enough to stationary or slow-moving vehicles or other objects ahead of you. You could crash into an object ahead of you. Do not rely on FCA when approaching stationary or slow-moving vehicles or other objects. { CAUTION: When the Adaptive Cruise Control radar is blocked by snow, ice, or dirt, it may not detect a vehicle ahead. FCA may not help you avoid a collision under these conditions. Do not use FCA when the radar is blocked by snow, ice, or dirt. Keep your radar clean. See "Cleaning the System" under Adaptive Cruise Control on page 3-20. Unnecessary Warnings FCA may occasionally provide an unnecessary warning to guard rails, signs, and other stationary objects. This is normal operation, your vehicle does not need service. Other Messages There are three messages that may appear on the Driver Information Center (DIC). They are CLEAN RADAR, RADAR CRUISE NOT READY and SERVICE RADAR CRUISE. See DIC Warnings and Messages on page 3-79. 3-12