Park Assist System

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The Park Assist System display activates an audible tone that changes from intermittent to continuous as the final two Light Emitting Diodes (LED's) are illuminated on one side or both sides of the display.

The system detection length from the rear of the vehicle is 0.3 meters to 1.5 meters. This area extends around the rear side of the vehicle. The system detection height from the ground is 0.2 meters to about 1.5 meters. The radio mutes when the system activates its audible tone.

When the driver selects Reverse, the system scans for objects behind the vehicle using four sensors located in the rear bumper. A warning display above the rear window provides both visible and audible warnings indicating the range of the object. If the radio is on, the system will mute the radio when the audible warning comes on.

The system is active only when the transmission gear selector is in reverse for vehicle speeds less than 16 Km/h (10 mph). If the vehicle's Parking/Emergency Brake is applied, the system is deactivated. There is an OFF/ON switch on the instrument panel located in the upper instrument panel switch pod, above the radio. If the driver does not want the system active, then a simple momentary press of the park assist system OFF button will disable the system until pressed again or the ignition key is cycled. The reason for the switch is mainly for use while pulling a trailer and off road use. With a trailer attached to the vehicle, anytime it is put into reverse, the audible and visual message would be present due to the close proximity of the trailer to the rear of the vehicle. When operating the vehicle off road, there are extreme angles that may set off the system alert and this helps eliminate the audible and visual message.

The display contains two sets of yellow and red Light Emitting Diode's (LED's) that the driver can see as they look over their shoulder while backing up. Each side of the vehicle has its own warning LED's. The system provides a visual warning by illuminating one or more yellow LED's as the vehicle gets closer to the object. As the vehicle continues to approach the object, one red LED is illuminated and the system emits a series of short beeps. The tone will remain constant and both red LED's are illuminated once the vehicle is within 12 inches (30.5 cm) of the object.

The system can be turned OFF and back ON through the switch on the upper instrument panel switch pod. If the park assist system is turned OFF, a single chime will sound and the EVIC display in the EMIC will display the following message "PARK ASSIST DISABLED", when the vehicle is in reverse.

Ensure that the rear bumper is free of dirt and debris to keep the system operating properly.
Jackhammers, large trucks, and other vibrations could affect the performance of the system.
Ensure that the parking brake is not applied.

If "Service Park Assist System" appears in the EVIC display after making sure the rear bumper is clean, proceed to diagnose the system using a scan tool and the appropriate diagnostic information.