2006 Jeep Grand Cherokee Owner Manual SRT8 - Page 143

UNDERSTANDING THE FEATURES OF YOUR VEHICLE 143 NOTE: Clean all four Rear Park Assist Sensors regularly, taking care not to scratch or damage them. The sensors must not be covered with ice, snow, slush, mud, dirt or debris. Failure to do so can result in the system not working properly. The system might not detect an obstacle behind the fascia or it could provide a false indication that an obstacle is behind the fascia. Assure objects are not within 11.8 inches (30 cm) from the rear fascia while driving the vehicle. Failure to do so can result in the system misinterpreting a close object as a sensor problem, causing the ЉSERVICE PARK ASSIST SYSTEMЉ message to be displayed in the instrument cluster. Ultrasonic noise from airbrakes of nearby trucks, air powered jackhammers and air powered shop tools, to name a few, will cause the Rear Park Assist System to be disabled until the ultrasonic noise is no longer present. 3