Park Assist Disabled Indicator

PARK ASSIST DISABLED INDICATOR

DESCRIPTION
A park assist disabled indicator is standard equipment on all instrument clusters. However, on vehicles not equipped with an optional front and/or rear park assist systems this indicator is electronically disabled. The park assist disabled indication appears within the reconfigurable dot matrix Organic Light Emitting Diode (OLED) display unit. The park assist disabled indicator consists of a textual PARK ASSIST DISABLED message which appears in place of the compass/trip computer information in the dot matrix display.

The dot matrix OLED is soldered onto the cluster electronic circuit board, and is visible through a window with a smoked clear lens located on the lower edge of the tachometer gauge dial face of the cluster overlay. The dark lens over the OLED prevents it from being clearly visible when it is not illuminated. The park assist disabled indicator textual message appears in the same blue-green color and at the same lighting level as the compass/trip computer information when it is illuminated by the instrument cluster electronic circuit board.

The park assist disabled indicator is serviced as a unit with the OLED in the instrument cluster.

OPERATION
The park assist disabled indicator gives an indication to the vehicle operator when the front and rear park assist systems have been manually disabled using the park assist switch found in the instrument panel lower switch pod. This indicator is controlled by the instrument cluster logic circuit based upon cluster programming and electronic messages received over the Controller Area Network (CAN) data bus from the park assist module.

The park assist disabled indicator function of the reconfigurable dot matrix Organic Light Emitting Diode (OLED) display unit is completely controlled by the instrument cluster logic circuit, and that logic will only allow this indicator to operate when the instrument cluster receives a battery current input on the fused ignition switch output (run-start) circuit. Therefore, the OLED park assist disabled indication will always be off when the ignition switch is in any position except ON or START. The instrument cluster will turn on the park assist disabled indicator for the following reasons:
- Park Assist Disabled Lamp-On Message - Each time the cluster receives a park assist disabled lamp-on message from the park assist module indicating that the park assist system has been manually disabled, the park assist disabled textual warning is illuminated. The park assist disabled textual warning remains illuminated until the cluster receives a lamp-off message from the park assist module, or until the ignition switch is turned to the OFF position, whichever occurs first.

The instrument cluster continually monitors the park assist switch in the instrument panel lower switch pod to determine the selected status of the park assist system. The cluster then sends the proper switch status messages to the park assist module. After a switch status message is sent by the cluster, the cluster awaits park assist disable messages from the park assist module to confirm the system status before energizing or de-energizing the park assist disabled indicator and the Light Emitting Diode (LED) indicator in the park assist switch. For proper diagnosis of the park assist switch, the park assist module, the CAN data bus and the electronic message inputs to the instrument cluster that control the park assist disabled indicator, a diagnostic scan tool is required.