Parking Assist Operation

When an object is within the measuring range of the sensor, the ultrasonic pulse is reflected and is received by the sending or a neighboring sensor. The sensor converts this signal into a voltage signal and sends this signal to the Rear Parking Assist Control Module. The Rear Parking Assist Control Module evaluates the received sensor signals. As soon as an object is within the measuring range, the Rear Parking Assist Control Module sends a signal to an external speaker in order to give out the acoustic distance signal. The measuring range is between 40-120 cm (15.74-47.24 in). From a distance of 120 cm (15.74 in), the acoustic signal is active. The frequency of the beep sound increases with decreasing distance. From a distance less than 40 cm (15.74 in), the sound becomes continuous.

The parking assist can be activated and deactivated by engaging the reverse gear.

The object alarm module carries out a self test and monitors the sensors for electrical and mechanical faults. Monitored is the power supply of each sensor and the sensor signals, which need to alter when the vehicle moves. If this is not the case, the sensor is acoustically blocked or faulty. Mud, ice and snow may cause obstruction of the function of the sensors. The Rear Parking Assist Control Module will also check whether the correct type of sensor is installed.