RAM 1500 Truck 4WD V8-4.7L (2008)
Four Wheel Drive Indicator Lamp: Description and Operation
Description
4WD Auto Indicator
4WD AUTO INDICATOR
A 4WD auto 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 4WD auto indicator is located on the right side of the instrument
cluster, to the right of the oil pressure gauge.
The 4WD auto indicator consists of a stencil-like cutout of the text 4WD AUTO in the opaque layer of the instrument cluster overlay. The dark outer
layer of the overlay prevents the indicator from being clearly visible when it is not illuminated. An amber Light Emitting Diode (LED) behind the cutout
in the opaque layer of the overlay causes the indicator to appear in amber through the translucent outer layer of the overlay when it is illuminated from
behind by the LED, which is soldered onto the instrument cluster electronic circuit board.
When the exterior lighting is turned ON, the illumination intensity of the 4WD auto indicator is dimmable, which is adjusted along with the cluster
general illumination lighting using the panel lamps dimmer thumbwheel on the headlamp switch.
The 4WD auto indicator is serviced as a unit with the instrument cluster.
4WD Indicator
4WD INDICATOR
