2015 Jeep Grand Cherokee Owner Manual - Page 208

206 UNDERSTANDING THE FEATURES OF YOUR VEHICLE obstructions, such as mud, dirt, or ice on windshield and fog on the inside of glass. In these cases, the DID will • If the "ACC/FCW Unavailable Wipe Front Radar display "ACC/FCW Limited Functionality Clean Front Sensor" message occurs frequently (e.g. more than Windshield" and the system will have degraded perforonce on every trip) without any snow, rain, mud, or mance. other obstruction, have the radar sensor realigned at The "ACC/FCW Limited Functionality Clean Front your authorized dealer. Windshield" message can sometimes be displayed while • Installing a snow plow, front-end protector, an afterdriving in adverse weather conditions. The ACC/FCW market grille or modifying the grille is not recomsystem will recover after the vehicle has left these areas. mended. Doing so may block the sensor and inhibit Under rare conditions, when the camera is not tracking ACC/FCW operation. any vehicles or objects in its path this warning may temporarily occur. "Clean Front Windshield" Warning NOTE: The "ACC/FCW Limited Functionality Clean Front Windshield" warning will display and also a chime will indicate when conditions temporarily limit system performance. This most often occurs at times of poor visibility, such as in snow or heavy rain and fog. The ACC system may also become temporarily blinded due to If weather conditions are not a factor, the driver should examine the windshield and the camera located on the back side of the inside rear view mirror. They may require cleaning or removal of an obstruction.