Chime/Buzzer - Description

PARK ASSIST SYSTEM

A park assist system (also known as the ParkTronic System/PTS) is an optional factory-installed electronic parking aid. During parking and other similar vehicle maneuvers this system alerts the vehicle operator to obstacles located in the path immediately in front of or behind the vehicle which, due to the surrounding vehicle structures, might be otherwise difficult to perceive. When an object is detected, the system uses electromechanical buzzer transducers and Light Emitting Diode (LED) indicators to provide the vehicle operator with audible and visual indications of the presence and proximity of such objects.

The park assist system includes the following major components, which are described in further detail elsewhere in this service information:

- Front Park Assist Display - Vehicles equipped with the park assist system have a front park assist display unit (also known as the front ParkTronic System/PTS warning element) mounted in the center of the instrument panel top cover near the windshield. The front display includes an integral electromechanical buzzer transducer. Only the narrow, oval-shaped smoked clear lens of the front display is visible on the outer surface of the instrument panel.
- Park Assist Module - Vehicles equipped with the park assist system include a park assist module (also known as the ParkTronic System/PTS module) which is secured within the driver side seat riser. It is concealed beneath the driver side front seat cushion on vehicles that are so equipped.
- Park Assist Sensors - Vehicles equipped with the park assist system have four ultrasonic park assist sensors (also known as ParkTronic System/PTS sensors) that are concealed behind the rear bumper and six ultrasonic park assist sensors that are concealed behind the front bumper. Each sensor is snapped into an individual molded plastic mounting bracket located at horizontal intervals along the back side of the front and rear bumpers.
- Park Assist Switch - The optional park assist system can be manually disabled or enabled using a park assist OFF switch (also known as the PTS OFF switch) that is integral to the instrument panel switch pod (also known as the Switch Bank Module/SBM or upper control panel/center console switch module/OBF control unit) in the instrument panel center stack below the heater and air conditioner controls and above the gearshift lever. The switch includes a Light Emitting Diode (LED) that illuminates to indicate when the park assist system is inactive.
- Rear Park Assist Buzzer - Vehicles equipped with the park assist system include a rear park assist buzzer (also known as the rear ParkTronic System/PTS buzzer) which is secured within the driver side seat riser. It is concealed beneath the driver side front seat cushion on vehicles that are so equipped.
- Rear Park Assist Display - Vehicles equipped with the park assist system have a rear park assist display unit (also known as the rear ParkTronic System/PTS warning element) integrated into each of the two outside rear view mirrors mounted just forward of the opening for each front door glass. These displays are located near the lower edge of the upper mirror glass, but the outer surface of the mirror glass prevents the display from being clearly visible unless the display is illuminated.
- Trailer Tow Connector - Vehicles equipped with the park assist system and an optional trailer towing package feature a trailer tow connector with an additional micro-switch that allows the park assist module to sense when a trailer wire harness has been connected in order to automatically disable the rear park assist system while towing a trailer.

Hard wired circuitry connects the various park assist system components to each other through the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other and to the vehicle electrical system through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.

The park assist system components cannot be adjusted or repaired. If any of the park assist system components is damaged or ineffective, that component must be replaced.