Windshield Wiper/Washer Controls; Headlight Switch And Daytime Running Lights; Headlight Dimmer - freightliner Columbia Manual

CAUTION
Never exhaust air from the suspension while
driving. When the air is exhausted, the suspen-
sion will not absorb road shocks and could be
damaged.

Windshield Wiper/Washer Controls

The wipers are operated by a double-paddle WIPER/
WASH switch mounted on the auxiliary instrument
panel. The top paddle, when pushed in, turns the
wipers on (if they are off) or off (if they are on).
When it is pushed up, the top paddle switches the
wipers to high speed; when it is pushed down, it
switches them to low speed.
The bottom paddle, when pushed in, turns the
washers on. When pressed for less than 1/2-second,
the wipers will perform a single, low speed dry wipe
(mist function). When pressed for more than 1/2-
second, the wash cycle begins and continues for
three cycles or until the paddle is released. When the
bottom paddle is pushed up, the wipers operate in
fast delay. When the bottom paddle is pushed down,
the wipers operate in slow delay. With the wipers in
delay mode (fast or slow), push the bottom paddle
up to shorten the delay period or push the paddle
down to lengthen it.
CAUTION
Do not move the wiper arms manually. Wiper
motor damage will occur if the arms are moved.
Headlight Switch and Daytime
Running Lights
A three-position headlight switch is used to operate
the exterior lights. When the switch is up, the head-
lights and all other vehicle lights are on. All vehicle
lighting is off when the switch is in the middle posi-
tion. When down, the switch activates only the clear-
ance, instrument panel, marker lights, and the tail-
lights. The switch for the headlight high beams is
built into the turn signal lever. When the headlights
are on high beam, a blue light in the warning and
indicator light module goes on. The ignition switch
must be on for the high beams to operate.
Switching on the ignition and releasing the parking
brakes automatically activates the daytime running
Instruments and Controls Identification
lights, if equipped. The daytime running lights will
operate until the parking brakes are applied or the
headlights are turned on.

Headlight Dimmer

Pull the turn signal lever toward the steering wheel to
change from low-beam to high-beam headlights or
from high beam back to low beam.
When the headlights are on high beam, a blue light
on the indicator light panel comes on. For vehicles
built to operate in the United States, switching from
low beams to high beams will switch off the road
lights.
NOTE: The ignition switch must be on for the
high beams to work.
Hazard Warning Light Switch Tab
The hazard warning light switch tab is located under-
neath the turn signal lever. See
warning lights are operated by pulling the tab out.
When the hazard warning light switch tab is pulled
out, all of the turn signal lights and both of the indica-
tor lights on the control panel will flash. To cancel the
warning lights, move the turn signal lever up or
down.
Marker Lights Interrupt Switch
The marker lights interrupt (MRKR INT) switch tem-
porarily deactivates the marker lights and taillights.
With the vehicle lights on, raise and release the inter-
rupt switch to briefly turn off the marker lights and
taillights. To alert the driver that the switch is func-
tioning, the dash lights will flash with the marker
lights when the switch is actuated.
Road Light Switch, Optional
The road light (ROAD LAMP) switch operates the
road lights mounted on the bottom edge of the front
bumper or recessed in the front bumper.
For vehicles built to operate in the United States, the
low beam headlights must be turned on before the
road lights can be turned on. The road lights will not
illuminate if the high beam headlights are already on,
and switching from low beams to high beams will
switch off the road lights.
Fig. 2.29. Hazard
2.30