Collision Avoidance and Parking Assist Systems: Description and Operation

Parking and Back-up Sensor System Description

Parking and Back-up Sensor System

The parking and back-up sensor system has a total of six sensors in the front and rear bumpers. One corner parking sensor at each corner of the vehicle, and two back-up sensors in the rear bumper. The sensors send out ultrasonic waves, receive waves reflected by an obstacle, determine the distance, and use the buzzer and information display or multi-information display (MID) to tell the driver that an obstacle is near.

- The parking sensors work any time the shifter is out of park, until the vehicle reaches about 10 mph (16 km/h). They do not come back on until slowing down to about 5 mph (8 km/h) or less.
- The back-up sensors are only activated in reverse, until the vehicle reaches 9 mph (15 km/h). They will not be activated again until slowing back down to 5 mph (8 km/h).
- The parking and back-up sensor system is inactive with its switch OFF.
- The parking sensor buzzer, back-up sensor buzzer, and display are activated for 0.5 seconds when the ignition switch is turned to ON (II), and the parking and back-up sensor switch is turned from OFF to ON.
- The sensors must be free of debris, snow, and ice to work correctly.
- A system check is performed each time: The parking and back-up sensor switch is turned ON with the ignition switch to ON (II).
- When a failure occurs, the parking and back-up sensor control unit stores DTCs and the multi-information display (MID) shows CHECK PARKING SENSOR SYSTEM. When the sensor unit detects that the failure is no longer present, it clears the DTC and MID will return to normal.

Corner

- The sensor determines between about 2.0 ft (60 cm) to 1.5 ft (45 cm), 1.5 ft (45 cm) to 1.2 ft (35 cm), and 1.2 ft (35 cm) to 0.66 ft (20 cm) from the obstacle to activate the warning indicators accordingly.
- The display and the corner buzzer are used to alert the driver, and the ON/OFF time is varied as shown in the table below according to the sensed distance.
- If an obstacle is sensed by more than one sensor, the buzzer sounds in sync with the display of the sensor that is closest to the obstacle.





Back-up

- The sensor determines between about 5.0 ft (150 cm) at wall or 3.6 ft (110 cm) to 2.0 ft (60 cm), 2.0 ft (60 cm) to 1.5 ft (45 cm), 1.5 ft (45 cm) to 1.2 ft (35 cm), and 1.2 ft (35 cm) to 0.66 ft (20 cm) from the obstacle to activate the warning indicators accordingly.
- The display and the back-up buzzer are used to alert the driver, and the ON/OFF time is varied as shown in the table below according to the sensed distance.
- If an obstacle is sensed by more than one sensor, the buzzer sounds in sync with the display of the sensor that is closest to the obstacle.