Object Detection Alarm System Operation

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The object detection system senses how close the vehicle is to an object. The distance is determined by the 4 ultrasonic sensors located on the front (if equipped) and rear bumper. When the system detects an object in drive, one of the following will occur:

If the object is less than 0.3 m (12 in) away from the vehicle, the amber outside, amber middle, and the red outside indicators flash and the chime sounds continuously for 5 seconds.
If the object is less than 0.3-0.6 m (12-24 in) away from the vehicle, the amber outside, amber middle, and the red outside indicators are ON.
If the object is 0.6-0.9 m (24-35.4 in) away from the vehicle, the amber outside, and the amber middle indicators are ON.
If the object is 0.9-1.2 m (35.4-47 in) away from the vehicle, the amber outside indicator is ON and the chime sounds one time on the first detection of an object.

When The system detects an object in reverse, one of the following will occur:

If the object is less than 0.3 m (12 in) away from the vehicle, the amber outside, amber middle indicators and the chime sounds continuously for 5 seconds.
If the object is less than 0.3-0.6 m (12-24 in) away from the vehicle, the amber outside, amber middle indicators are ON.
If the object is 0.6-1.0 m (24-40 in) away from the vehicle, the amber outside and amber middle indicators are ON.
If the object is 1.0-2.5 m (40-98 in) away from the vehicle, the amber outside indicator is ON and is the first detection of an object.

The object detection system can detect objects 7.6 cm (3 in) wide and at least 25.4 cm (10 inches) tall. It cannot detect objects above the level of the roof of the vehicle.

If the object detection system detects a malfunction, the object detection system will send a serial data communication message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST on the driver information center (DIC). When SERVICE PARK ASSIST is displayed in the DIC, the chime will sound and the red indicator on both information telltale centers will illuminate continuously, notifying the driver that a malfunction exist.