Parking Assist Operation

WARNING: This page is about a different car, the 2012 Chevrolet Cruze. However, it is still accessible from the selected car via links, so may be relevant.

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 object alarm module. The object alarm module evaluates the received sensor signals. As soon as an object is within the measuring range, the object alarm module sends a message via CAN-Bus to the radio in order to give out the acoustic distance signal. The measuring range is between 25-140 cm (9.84-55.12 in). From a distance of 140 cm (55.12 in), the acoustic signal is active. The frequency of the beep sound increases with decreasing distance. From a distance less than 25 cm (9.84 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. Besides that the object alarm module checks whether the correct type of sensor is installed. If any of these tests fails, a DTC with corresponding symptom is set, the parking assist is deactivated and the parking assist indicator in the instrument panel cluster is activated.