freightliner 122SD - Steering Column and Left-Hand Dash Controls

Steering Column and Left-
Hand Dash Controls
Ignition and Key Switch
The ignition switch is located on the lower portion of
the left-hand dash.
The ignition switch has four positions: ACC, OFF,
ON, and START. In the OFF position, the key slot is
vertical; the key can be inserted and removed only in
this position. See
Fig. 5.1.
In the ACC (accessory) position, the key is turned
counterclockwise. The auxiliary (bunk) fan, wind-
shield fan(s), radio or stereo system, mirror heat,
ether start system, air dryer, backup lights, and all of
the electrical systems that are operable in the off po-
sition are operable.
The low-beam headlights, taillights, brake lights, road
lights, dome lights, clearance lights, turn signals,
hazard lights, refrigerator, fuel heater, electric oil pan
heater, and electric or diesel-fired engine-coolant pre-
heaters can be operated in the off position (regard-
less of whether the key is inserted).
In the ON position, the key is turned clockwise. All
electrical systems are operable. Low air- and oil-
pressure warning lights (or messages) and buzzer
operate until the engine is started and pressure is
built up. The engine can be started and operated
only when the ignition switch is ON.
NOTE: Switching on the ignition and releasing
the parking brakes automatically activates the
daytime running lights. The daytime running
lights will operate until the parking brakes are
applied, then they will switch off. They can also
be turned off with an optional override switch.
The ignition key also locks and unlocks the cab
doors, the baggage door(s) and if equipped, the bunk
door(s).
Headlight Switch
A three-position headlight switch on the left-hand
dash is used to operate the exterior lights. When the
switch is in the upper-most position, the headlights
and all other vehicle lights are on. All vehicle lighting
is off when the switch is in the middle position. When
the switch is in the downward position, only the
clearance, instrument panel, marker lights, and the
taillights are illuminated. See
Fig. 5.2.
Switching ON the ignition and releasing the parking
brakes automatically activates the daytime running
lights, if equipped. The daytime running lights will
operate until the parking brake is applied or the
headlights are turned on.
07/19/2006 f610805
Fig. 5.1, Ignition Switch
f462184
1
2
3
4
5
6
10/29/2009
1. Turn Signal/Hi-Low
Beam Switch
2. Hazard Light Switch
3. Headlight Switch
4. Utility Light Switch
5. Ignition Switch and
Key
6. Tilt/Telescope Pedal
Fig. 5.2, Steering Column and Left-Hand Dash
Driver Controls
5.1