Commander 4WD V8-4.7L Flex Fuel (2009)
Malfunction Indicator Lamp - Transfer Case: Description and Operation
Service 4WD Indicator - Description
DESCRIPTION
A service 4WD indicator is standard equipment on all instrument clusters. However, on vehicles not equipped with the optional four-wheel drive system
and electronically shifted transfer case, this indicator is electronically disabled. The service 4WD indication appears within the reconfigurable dot matrix
Organic Light Emitting Diode (OLED) display unit. The service 4WD indicator consists of a textual SERVICE 4WD SYSTEM 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 service 4WD indicator textual message appears in the same white 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 service 4WD indicator is serviced as a unit with the OLED in the instrument cluster.
