Exterior Lighting Controls

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Unless otherwise noted below, press the upper half of the switch to turn the desired light(s) on or off.

Exterior light controls are listed here in alphabetical order. The ICC5 also provides some exterior light controls.

Automatic Headlights

If the vehicle is equipped with a rain-light sensor and the headlight switch is in the 'A' position, the low beam headlights and all exterior lights activate when the outside light decreases to a pre-set level. See Fig..

  1. Fog Lights (optional)—Activate by pulling the switch out when the marker lights or headlights are on.

  2. Automatic Headlights

  3. Off

  4. Marker Lights

  5. Headlights

Fig. 1, Headlight Switch

Auxiliary High Beam Lights

If present, auxiliary high-beam lights are located in the front bumper. To activate the auxiliary high beam lights, press the upper part of the dash switch. The auxiliary high beam lights will illuminate only when the high-beam headlights are on. They will switch off temporarily when the low-beam headlights are on, until the high beams are on again. Press the upper half of the switch to deactivate the auxiliary high beam lights. See Fig..

  1. Utility Light Switch

  2. Dash Light Switch (optional)

  3. DRL Override Switch

  4. Sleeper Dome Light Switch

  5. Auxiliary High Beam Light Switch

  6. Cab Dome Light Switch

  7. Sleeper Ambient Light Switch

  8. All Dome Lights Switch

  9. Trailer Utility Light Switch

  10. Utility Light Switch

  11. Foot Well Light Switch

Fig. 2, Dash-Mounted and Sleeper-Control Light Switches

Backup Lights

Backup lights activate only when the vehicle is in reverse, and are designed to be used while backing up at night.

Daytime Running Lights

If the vehicle is equipped with daytime running lights (DRL), they are automatically activated when the ignition is switched on and the parking brake is released. The DRL turn off when the engine falls below 400 rpm, the parking brake is applied, or the headlights are turned on.

Daytime running lights are mandatory for vehicles domiciled in Canada. Vehicles domiciled in any other location may have an optional override switch ( see Fig., ref. 3). This is a momentary switch that enables the driver to deactivate the DRL.

Note: For right-hand drive vehicles domiciled in Australia, the rear lights do not come on while daytime running lights are on.

Fog Lights

Fog lights are designed to reduce glare in foggy conditions. The marker lights or headlights must be on in order to turn the fog lights on. Pull the headlight switch outward to activate the fog lights.

Hazard Warning Lights

The hazard warning light switch is located on the dash switch panel. See Fig.. The hazard lights can be activated regardless of the ignition switch position.

To activate the hazard lights, press the center of the switch once. The switch will blink at the same rate that the hazard lights flash. Press the switch again to turn them off. All the turn signals on the vehicle and trailer, as well as the turn signal indicators in the ICU, flash simultaneously when the hazard lights are activated.

Fig. 3, Hazard Warning Switch

Headlights & Follow Me Home Feature

The headlight switch is a rotary switch located to the left of the steering column, above the ignition switch. See Fig..

If the Follow Me Home feature is activated, the low-beam headlights will remain on for nine seconds after the vehicle is parked, if the headlights were on prior to engine shutdown. This feature provides temporary lighting in the path of the headlights while walking to a building or other destination. If a vehicle door is opened or closed while this feature is active, the timer will add an additional 10 seconds of lighting. This feature can be temporarily disabled by turning the ignition switch on, or by cycling the headlight switch from the off position to one of the other two positions.

Some vehicles may have a feature that automatically turns on the headlights if the windshield wipers are on and the vehicle is moving faster than 10 mph (16 km/h). At speeds between 10 and 40 mph (16 to 64 km/h), cycling the headlight switch will turn the headlights off.

High-Beam Headlights

With the low-beam headlights on, push the turn-signal lever away from you to turn on the high-beam headlights. See Fig.. To turn off the high-beam headlights, pull the lever to the middle position.

With the low-beam headlights on, pull the lever towards you to flash the high-beam headlights momentarily.

When the high-beam headlights are on, a blue telltale illuminates on the instrument cluster.

Note: The ignition switch must be on for the high beams to work.

  1. Headlight Control Symbols

  2. Windshield Wiper Switch

  3. Windshield Washer Switch

  4. Turn Signal Symbol

Fig. 4, Steering Column-Mounted Turn Signal Lever

Intelligent High-Beam Headlights

The intelligent high-beam headlight feature activates when the headlight switch is in the 'A' position and the turn signal lever is pushed away from the driver in the high-beam position. See Fig. and Fig..

When a vehicle approaches from the opposite direction, the high-beam headlights deactivate and the low-beam headlights activate. The high-beam headlights activate again when there are no vehicles approaching from the opposite direction.

Marker Lights

To turn the marker lights on, turn the headlight switch clockwise past the off position. See Fig..

Marker Interrupt

Note: This switch may not be available in all export markets.

The marker interrupt switch is located in the right-hand switch pod of the steering wheel for the ICUC system (see Fig.), and the left-hand button pod of the steering wheel for the ICC5 button (see Fig.). Pressing it temporarily flashes the marker lights.

  1. Cruise Accelerate/Resume

  2. Quick Access System Settings

  3. Cruise Decelerate/Set

  4. Phone Hang-Up/Reject

  5. Marker Interrupt**

  6. Phone Pick-Up

  7. Headlamp Interrupt**

  8. Cancel Cruise Control

  9. Not available in all markets

Fig. 5, Steering-Wheel-Mounted Right-Hand Switch Pod - ICUC

  • Menu Button—Press the button to access instrument panel menus. When the button is pressed, information appears on the driver display screen.

  1. Cruise Accelerate/Resume

  2. Back Button

  3. Quick Access System Settings

  4. Marker Interrupt

  5. Cancel Cruise Control

  6. Cruise Decelerate/Set

Fig. 6, Steering-Wheel-Mounted Left-Hand Pod - ICC5

Pretrip Light Test Switch

When the driver presses the pretrip light test switch, shown in Fig., all exterior lights are activated so the driver can exit the vehicle and verify they are working properly. For additional information see Safety Precautions Pre- and Post-Trip Inspections and Maintenance.

Fig. 7, Pretrip Light Test Switch

Spotlight

The spotlight switch is located on the pivoting handle of the spotlight. There may be a single spotlight assembly mounted above the driver's door, or one above each door.

Turn Signals

The turn-signal lever is mounted on the left-hand side of the steering column. Pulling the turn-signal lever up activates the right-turn signal; pushing it down activates the left-turn signal. The lever is typically a non-canceling combination turn-signal, windshield wiper/washer switch, and high beam headlight control unit. See Fig..

When a turn signal is activated, a green telltale light flashes on the instrument panel.

On a self-canceling turn signal lever, the lever automatically returns to the neutral position when the steering wheel returns to the straight-ahead position after a turn.

Utility Lights

Utility lights can be swivel-mounted on upper half of the cab, mounted on the exhaust support, or flush-mounted on the back of the cab or sleeper. Press the upper half of the switch to turn the utility lights on or off.

When activated, a red indicator light in the switch is illuminated.

Note:
Parent topic: Lighting Controls
Document Number: 0000110438
Manual Publication Date: 2024-05-03
Topic Publication Date: 2024-12-28