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. There is one corner sensor at each corner of the vehicle, and two center sensors in the rear bumper. The sensors send out ultrasonic waves, receive waves reflected by an obstacle, determine the distance, then use the beeper, the multi-information display, and the navigation display unit to tell the driver that an obstacle is near.

- The corner sensors work any time the shift lever is shifted out of P, up until the vehicle reaches about 9 mph (15 km/h). They do not come back on until the vehicle has slowed down to about 5 mph (8 km/h) or less.
- The center sensors are only activated in reverse, up until the vehicle reaches 9 mph (15 km/h). They are not activated again until the vehicle has slowed back down to 5 mph (8 km/h).
- The parking and back-up sensor system is inactive when its switch is turned OFF.
- The front sensor beeper, rear sensor beeper, 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.
- When the ignition switch is ON (II), a system check is performed each time the parking and back-up sensor switch is turned ON.
- When a failure occurs, the parking and back-up sensor control unit stores DTCs and the multi-information display shows CHECK PARKING SENSOR SYSTEM. When the sensor unit detects that the failure is no longer present, it clears the DTC and the multi-information display returns to normal.
- When a failure occurs, all parking and back-up sensor indicators will appear as a constant red on the navigation display unit.
- You can monitor the sensor operation in the HDS data list.

Front and Rear Corner

- The sensor determines the distance to objects in the following ranges and activates the warning indicators accordingly:
- From about 60 cm (23.6 in) to 45 cm (17.7 in)
- From 45 cm (17.7 in) to 35 cm (13.8 in)
- Less than 35 cm (13.8 in)

- The display and the corner beeper are used to alert the driver and, according to the sensed distance, the ON/OFF time varies as shown in the table below.
- If more than one sensor senses the object, the beeper sounds in sync with the display of the sensor that is closest to the obstacle.





Rear Center

- The sensor determines the distance to objects in the following ranges and activates the warning indicators accordingly:
- From about 150 cm (59.1 in) at wall or 110 cm (43.3 in) to 60 cm (23.6 in)
- From 60 cm (23.6 in) to 45 cm (17.7 in)
- From 45 cm (17.7 in) to 35 cm (13.8 in)
- Less than 35 cm (13.8 in)

- The display and the rear beeper are used to alert the driver and, according to the sensed distance, the ON/OFF time varies as shown in the table below.
- If more than one sensor senses the object, the beeper sounds in sync with the display of the sensor that is closest to the obstacle.