2003 Saab 9-3 Owner's Manual - Page 151

Starting and driving 151 Saab Parking Assistance Saab Parking Assistance (option) WARNING Responsibility always lies with the driver when reversing. • The parking aid system can facilitate parking and reversing. • Bear in mind that small objects, such as a child lying on the ground, and narrow objects cannot always be detected by the system. Saab Parking Assistance facilitates parking and reversing. There are four sensors in the rear bumper that detect objects up to 6 ft (1.8 meters) behind the car. If the car is heavily laden, the system may falsely indicate that there is an object within the detection range. This is since the sensors are angled towards the ground when the car is tail-heavy. Area monitored by the sensors seen from the side The system uses four sensors in the rear bumper. These emit ultrasound signals that bounce back to the sensors off any objects behind the car. The system, however, cannot always detect small or narrow objects, such as a post, since the surface area presented to the car is too small. Area monitored by the sensors seen from above The system is activated automatically when reverse is engaged or selected. When the sensors detect an object within the monitored area, pulses of sound will be heard. The frequency of these pulses increases as the car comes closer to the object. When the distance to the object is less than 1 ft. (30 cm), a continuous tone will be heard. When an object is approximately 3 ft. (90 cm) from the car, the sound pulses change character markedly (frequency increases). A distance of about 3 ft. (90 cm) is suitable if you wish to load or unload the trunk.