The parking assist system can help drivers avoid certain objects in their path during low-speed parking. The distance and location of the object is determined by 4 object sensors located in the rear fascia and 4 object sensors located in the front fascia. The parking assist system may not detect all children, pedestrians, bicyclists, animals or objects below the bumper. Drivers should remember to always check the area around the vehicle before moving forward or backing up. The parking assist system will not stop or slow down a vehicle. It does not engage a vehicle’s throttle or braking. No safety system can take the place of an alert and engaged driver.

In addition to the eight object sensors used for front and rear parking assist, the automatic parking assist system uses two additional object sensors located on the front fascia. These sensors face toward the side of the vehicle and are used to aid the driver in positioning the vehicle in a parallel or perpendicular parking maneuver. Automatic parking assist automatically searches for and steers the vehicle into an available parallel or perpendicular parking spot. Drivers must always remember to take their hands off the wheel while the system is automatically steering and to remember to operate the brakes; Automatic parking assist will not brake the vehicle.

The parking assist system is made up of the following components:

• K182 Parking Assist Control Module
• B306 Parking Assist Sensors
• Parking Assist Switch
• Parking Assist Switch Indicator
• Parallel Parking Assist Switch
• Infotainment System

The K182 Parking Assist Control Module provides a reference voltage and a low reference to the B306 Parking Assist Sensors. The K182 Parking Assist Control Module receives individual signals from each of the four B306 Parking Assist Sensors and determines the location and distance of an object based on these inputs. When an object is detected, the K182 Parking Assist Control Module will send a serial data message to the infotainment system requesting an audible alert.

The B306 Parking Assist Sensors are located in the front and rear fascia of the vehicle. The sensors are used to determine the distance between an object and the bumper. Each sensor emits an ultrasonic frequency which is reflected off any object located behind the vehicle. These reflections are received by the sensors. The time difference between the emission of the frequency and when the reflection is received is known as sensor echo time; it is used to determine the distance to the object. The sensors report this information to the K182 Parking Assist Control Module.

The parking assist system can be activated and deactivated by pressing the parking assist switch. The K124 Active Safety Control Module applies voltage and monitors the parking assist switch signal circuit. The parking assist switch is a normally open switch. With the switch open, voltage seen at the K124 Active Safety Control Module is high. When the parking assist switch is pressed, the switch is closed and the signal circuit is pulled to ground. With the switch closed, voltage seen at the K124 Active Safety Control Module is low. The K124 Active Safety Control Module will respond to this by activating or deactivating the parking assist function.

When the parking assist system is enabled, the K124 Active Safety Control Module will illuminate the indicator on the switch. The indicator is controlled through a low control circuit by the K124 Active Safety Control Module.

The parallel parking assist system can be activated and deactivated by pressing the parallel parking assist switch. The K182 Parking Assist Control Module applies voltage and monitors the parallel parking assist switch signal circuit. The parallel parking assist switch is a normally open switch. With the switch open, voltage seen at the K182 Parking Assist Control Module is high. When the parallel parking assist switch is pressed, the switch is closed and the signal circuit is pulled to ground. With the switch closed, voltage seen at the K182 Parking Assist Control Module is low. The K182 Parking Assist Control Module will respond to this by activating or deactivating the parallel parking assist function.

The infotainment system controls the audible alert for the parking assist system. If the an object is detected the infotainment system will command beeps as an audible alert to the driver.

The rear parking assist system uses 4 B306 Parking Assist Sensors located on the rear fascia and functions when the transmission is in REVERSE. When a driver is backing up at a low speed, below 8 km/h (5 mph), the B306 Parking Assist Sensors may detect objects up to 8 feet (2.4 m) behind the vehicle. When an object is within the measuring range of the B306 Parking Assist Sensors, 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 K182 Parking Assist Control Module. The K182 Parking Assist Control Module evaluates the received sensor signals.

When an object is first detected while backing up, the parking assist system emits low-pitched beeps from the rear speakers, or, if the vehicle is equipped with the Safety Alert Seat (HS1), the seat pulses 2 times on both sides of the seat. On some vehicles, the time between beeps may get shorter as the vehicle approaches the detected object . When an object is within 0.6 m (2 ft) of the bumper, 5 repeating low-pitched beeps are played from the rear speakers, or, if the vehicle is equipped with the Safety Alert Seat (HS1), it pulses 5 times on both sides. When an object is within 0.3 m (1 ft) of the bumper, repeating low-pitched beeps or a continuous low-pitched tone is played from the rear speakers, or, if the vehicle is equipped with the Safety Alert Seat (HS1), the seat pulses 5 times on both sides

The front parking assist system uses 4 B306 Parking Assist Sensors located on the front fascia and functions when the vehicle is moving forward at low speeds. When a driver is driving forward at a low speed, below 8 km/h (5 mph), the B306 Parking Assist Sensors may detect objects up to 8 feet (2.4 m) in front og the vehicle. When an object is within the measuring range of the B306 Parking Assist Sensors, 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 K182 Parking Assist Control Module. The K182 Parking Assist Control Module evaluates the received sensor signals.

The front parking assist system uses a parking assist display with bars that show "distance to object," driving direction, and object location information for the parking assist system. As the vehicle gets closer to the detected object, distance-to-object information and caution triangles may be displayed that changes from yellow to amber to red.

When an object is within 0.3 m (1 ft) of the bumper, repeating low-pitched beeps or a continuous low-pitched tone is played from the rear speakers, or, if the vehicle is equipped with the Safety Alert Seat (HS1), the seat pulses 5 times on both sides

The parking assist system can be turned ON and OFF using the parking assist switch control or through driver information center.

The K182 Parking Assist Control 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. Mud, ice and snow may cause obstruction of the function of the sensors. The K182 Parking Assist Control Module also determines if the correct type of sensor is installed. If any of these tests fails, a DTC with corresponding symptom is set and the parking assist system is deactivated.

The automatic parking assist system uses 12 B306 Parking Assist Sensors located in the front fascia and rear fascias and functions when the vehicle is moving forward. While moving forward at low speeds, the front-side sensors are used to search for possible parallel parking spots. The system will only detect a parking space if the vehicle is going forward.

To begin searching for a parking spot, the parallel parking assist switch is pressed; to cancel the search, the switch is pressed again. To switch between parallel and perpendicular parking modes during the search process, press and hold the parallel parking assist switch button or, if available, the infotainment system can be used. to switch parking modes . To switch between parking sides (e.g., to look for a parking space on the other side of the lane in a parking lot), the turn signal for the desired side should be activated or, if available, the infotainment system can be used to switch sides.

After the vehicle has passed a sufficiently large spot, an audible beep will occur and the system display will notify the driver when to stop. When instructed, the driver should shift to REVERSE and take their hands off the vibrating steering wheel; then the driver should release the brakes to allow the vehicle to begin parking; a progress arrow displays the status of the parking maneuver. The driver must brake the vehicle at the end of each parking motion and manually change gears when instructed. The driver should also be prepared to accelerate and brake as needed to avoid vehicles, pedestrians or other objects. When changing gears, the driver should allow the automatic steering to complete before continuing the parking maneuver.

When automatic parking is done, the system will inform the driver by displaying a message and beeping, and automatic steering will end; the driver should then shift into PARK. If additional maneuvers are required, the system will display instructions for the driver to follow in the system display.

Any of the following conditions may disable automatic parking assist or cause the system to abort a parking maneuver:

• The driver touches the steering wheel while the system is working
• There is a fault within the system
• The electronic stability control or anti-lock brakes are activated
• An important vehicle message is displayed in the Driver Information Center
• Vehicle speed exceeds 6 miles per hour

The driver information center displays SERVICE PARK ASSIST when the K182 Parking Assist Control Module detects a malfunction in the parking assist system and the system is disabled. The driver information center also displays SERVICE PARK ASSIST when a loss of communication occurs with the K182 Parking Assist Control Module.

The PARK ASSIST OFF message is displayed in the driver information center when the parking assist system is disabled due to conditions that disable or inhibit the system. The parking assist control module requests the driver information center display PARK ASSIST OFF when it detects that one of the following conditions:

• The parking assist system is manually disabled using the park assist switch.
• An object is attached to the vehicle which is interfering with the park assist system field of view. Example items are a trailer, bicycle rack, trailer hitch receiver, tow bar, aftermarket front license plate frame, or a bent front license plate.
• The B306 Parking Assist Sensors are covered by snow, mud, dirt or ice.
• The vehicle front or rear fascia is damaged.
• Excessive paint thickness on a replacement parking assist sensor.
• The B306 Parking Assist Sensors are disrupted by vibrations, like those caused by a large nearby vehicle or from heavy equipment such as a jackhammer.