Body Builder Instructions

Volvo Trucks North America

Cab, Instrument Panel

VN, VHD, VAH
Section 8
Introduction
This document contains information about the cab, instrument panel in Volvo vehicles.

Note: We have attempted to cover as much information as possible. However, this

information does not cover all the unique variations that a vehicle may present. Note that
illustrations are typical but may not reflect all the variations of assembly.

All data provided is based on information that was current at time of release. However,
this information is subject to change without notice.

Please note that no part of this information may be reproduced, stored, or transmitted by
any means without the express written permission of Volvo Trucks North America.

Contents:
• “Instrument Panel”, page 3

• “Instrument Panel Layout”, page 4

• “Panel A”, page 5

• “Panel B”, page 6

• “Panel C ”, page 7

• “Panel D”, page 8

• “Panel E”, page 9

• “Instrument Cluster”, page 10

• “Secondary Gauge Cluster”, page 11

• “Gauges”, page 11

• “Switches”, page 14

• “Inter-Axle Differential Lock”, page 14

• “Auxiliary ”, page 15

• “Fifth Wheel Touch Lock”, page 16

• “Marker Interrupt ”, page 16

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 • “Traction Control”, page 17

• “Suspension Dump ”, page 17

• “Fifth Wheel Slide ”, page 18

• “Snow Plow Lamps”, page 18

• “Beacon Lamps ”, page 19

• “Back of Cab Light ”, page 19

• “Power Take-Off (PTO)”, page 20

• “PTO Speed Adjustment”, page 21

• “Engine Brake”, page 22

• “Volvo Variable Geometry Turbo Brake VN”, page 22

• “Transmission Retarder, VHD Only”, page 23

• “Volvo Engine Brake I-VEB”, page 24

• “Air Conditioning Electronic Climate Control (ECC)”, page 25

• “Horn ”, page 26

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 Instrument Panel
Tell-Tales
A tell-tale is a display that indicates the actuation of a device, a correct or defective condition, or a failure to function.
The operator should become familiar with these symbols in order to recognize and react (if necessary) to the indicated condi-
tion. Tell-tale symbols are shown in the instrument panel illustrations on the following pages.

Colors
To promote visual recognition internationally, specific colors for tell-tales have been established. Unless governmental regu-
lations (in the area where the vehicle is to be used) or engineering directives specify otherwise, the standard colors are:

• Blue — high-beam headlights/engine maintenance

• Flashing Green — turn signals

• Flashing Red — hazard condition involving the safety of personnel

• Steady Green — system in operation

• Steady Red — warning, immediate action required

• Amber — early warning, such as low fuel or Anti-Lock Brake System (ABS) malfunction

Panel Arrangement
Your view from the driver seat should look something like the illustrations shown on the next page. The layout is designed to
provide the operator with a good view of the gauges and controls (which are placed so they are within easy reach). The in-
strument panel, as shown in the following drawing, is broken down into several main sections. For easy identification we refer
to them, from left to right, as Panels A, B, C, D, and E.

Note: This section shows the instruments and controls available for this vehicle at the time of publication. However, depend-
ing on options, your vehicle may not have all the instruments and controls shown here, and they may not be in the same
position.

Notes

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Instrument Panel Layout

W3007473

Panel Arrangement

Notes

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 Panel A

W3007469

1 Light Control Panel

2 Instrument Cluster
3 Trailer Air Supply
4 Tractor Parking Brake

Notes

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Panel B

W3007470

5. Inter-Wheel Differential Lock 17. Marker Interrupt or Secondary Gauge

6. Inter-Axle Differential Lock Cluster
7. VN: Idle Management Indicator Lamp (ISX ICON) or Optional Switch 18. Optional Switch or Secondary Gauge Cluster
or Electronically Controlled Suspension (ECS) On/Off or Lift Axle #1 19. Traction Control
(Pusher) 20. Suspension Dump
8. VN: Optional Switch or Electronically Controlled Suspension (ECS) 21. 5th Wheel Slide or Engine Inside/Outside Air
Up/Down Control
9. Auxiliary #1 22. Air Vent
10. VN: Auxiliary #2 or Temp-A-Start (TAS) Indicator Lamps 23. Radio
11. VN: Auxiliary #3 or Temp-A-Start (TAS) On/Off 24. Fan Speed
12. Secondary Gauge Cluster 25. Recirculation
13. Secondary Gauge Cluster 26. Air Distribution
14. Engine Brake or I-Shift Eco-Roll 27. AC ON/OFF
15. VN: Engine Brake Mode Select (ISX) or I-Shift Hill Start Assist 28. Temperature Knob
16. VN: 5th Wheel Touch Lock (Unlock) 29. Trailer Hand Brake Control

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 Panel C

W3007471

30. VN: Optional Switch or Passenger Window Lift

31. Water in Fuel (Purge Switch)
32. Optional Switch or AUX/USB Port
33. VN: Sleeper Fan Speed
34. VN: Optional Switch or Beacon Lamps

Notes

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Panel D

W3007472

35. Back of Cab Light

36. Optional Switch
37. Optional Switch or Power Take-Off (PTO)
38. VN: Overhead Bunk Lamp or Passenger Side Mirror IN/OUT
39. VN: Side Mirror Heat or Power Take-Off (PTO),

Notes

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 Panel E

W3007474

40. AC Inverter 120 V

41. Optional Switch
42. Optional Switch
43. Power Outlet
44. Microphone

Before driving this vehicle, locate the instruments and controls, and become thoroughly familiar with their operation. After
starting and when driving, ensure that the instrument readings are normal.

Note: The instruments and controls shown were available for this vehicle at the time of publication. Depending on the options
selected, all gauges and tell-tales may not be used in all vehicles.

Note: The dash layout is the same for all Volvo vehicles. However, the switches and certain switch positions are different de-
pending on vehicle options.

Notes

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Instrument Cluster
There are two instrument cluster levels available: High and Mid level.

W3034025

High Level Cluster

1. Tachometer 9. Driver Information Display (DID)

2. Upper Tell-Tales 10. Fuel Level
3. Speedometer 11. Intake Manifold Pressure
4. Front Brake Air Pressure 12. Application Air Pressure
5. Rear Brake Air Pressure 13. Exhaust Pyrometer
6. Oil Pressure 14. Hill Start Assist
7. Aftertreatment DEF Tank Gauge 15. Lower Tell-Tales
8. Malfunction Indicator Lamp (MIL)

W3034026

Mid Level Cluster

1. Tachometer 8. Malfunction Indicator Lamp (MIL)

2. Upper Tell-Tales 9. Driver Information Display (DID)
3. Speedometer 10. Fuel Level
4. Front Brake Air Pressure 11. Intake Manifold Pressure
5. Rear Brake Air Pressure 12. Hill Start Assist
6. Oil Pressure 13. Lower Tell-Tales
7. Aftertreatment DEF Tank Gauge

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 Secondary Gauge Cluster
The secondary gauge is an optional feature, which is available only with the Mid and High level instrument clusters. The in-
strument cluster receives temperature information from the datalink and then passes the information to the secondary gauge
for viewing.

W3006081 W3006082

Engine/Transmission Temperature Gauge Front/Rear Axle Temperature Gauge

Gauges
Tachometer
The tachometer has two colored fields: green and red. Use the green field for normal driving (1000 to 1600 rpm). Use higher
engine speeds for maximum engine brake performance. Never allow the engine to go into the red field (greater than 2200
rpm).

To achieve maximum fuel economy, use the Performance Bonus Guide feature. This feature helps the driver find the most ef-
ficient operating range for the engine.

Upper Tell-Tales
The Stop, Check and Info message tell-tales are located in the upper tell-tales box on the instrument cluster. The left and
right turn signal indicators, seat belt tell-tale and parking brake tell-tale are also located in the upper tell-tales box. Refer to
the Driver Information Display manual for additional information about the message tell-tales.

Speedometer
The speedometer is driven by the vehicle's electronic system.

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Front and Rear Brake System Air Pressure Gauges
The system air gauges are connected to the front and rear circuit tanks via sensors mounted on the pass-through wall. The
two gauges should register equal air pressure. By observing the gauge pointers, the operator can detect a pressure drop if
an air leak develops and can readily identify the circuit affected.

DANGER
Failure to observe these precautions can result in the loss of braking performance. This can lead to a vehicle accident,
which can result in personal injury or death.

If the pressure in a brake circuit air tank drops below approximately 420 kPa (65 psi), the red LED light in the lower left corner
of the gauge will come on and the STOP tell-tale warning indicator comes on. In addition, the buzzer comes on if the vehicle
starts to move at speed higher than 1.6 km/h (1 mph). If the vehicle is stationary, only the STOP tell-tale warning and red
LED light appear.

W3005171

Stop Tell-Tale

If the air pressure drops down below 420 kPa (65 psi) in both systems, the spring brakes will automatically engage to stop
the vehicle.

Oil Pressure Gauge

DANGER
Failure to take necessary action when the STOP tell-tale is on can ultimately result in automatic engine shutdown and loss
of power steering assist. Vehicle crash can occur, resulting in personal injury or death.

The oil pressure limit is dependent on the engine manufacturer's electronic program. When the oil pressure is too low, the
red STOP tell-tale illuminates, the buzzer sounds, and the oil pressure symbol appears on the Driver Information Display
(DID) screen. For example, if the engine is at risk, the Engine Electronic Control Unit (EECU) may derate the engine power.
Bring the vehicle to a safe stop where the problem can be checked.

W3003613

W3005171

Stop Tell-Tale Oil Pressure Symbol

Note: The engine will shut down within 30 seconds from when the red STOP tell-tale comes on. Pull off the road as soon as
possible without creating a safety hazard.

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 Coolant Temperature Gauge
The coolant temperature gauge indicates engine coolant temperature. The normal operating temperature for Volvo engines
is 80 to 105°C (170 to 215°F). Under normal driving conditions, the temperature must be below the red sector.
The temperature range for the coolant will vary depending on the type of engine, load, grade, ambient air temperature and
operating conditions. If the temperature remains below or exceeds the normal temperature range, the cooling system should
be checked for problems by an authorized Volvo Truck dealer.

The temperature limit is dependent on the electronic program for the engine model. When coolant temperature is excessive,
the red STOP tell-tale will come on and the buzzer will sound. The engine is at risk and the EECU may derate the engine
power. Stop at the first safe place where the problem can be checked.

W3005171

Stop Tell-Tale

If the coolant temperature returns to normal shortly after exceeding the limit and no repair is performed, the warning mes-
sages go out, but a fault message will be logged.

Middle and Lower Tell-Tales

The middle and lower tell-tales provide vehicle and component status information. For more information, refer to the Driver
Information Display manual.

Driver Information Display (DID)

The DID gives the operator necessary and important information about the vehicle and components. For more information
about the DID, refer to the Driver Information Display manual.

Fuel Level Gauge

The fuel level gauge is connected to a fuel sensor unit in the fuel tank. There is only one sensor even if the vehicle is
equipped with dual tanks.

Intake Manifold Pressure Gauge (High Level Cluster Only)

The intake manifold pressure gauge indicates intake manifold pressure to the engine. The pressure generated by the intake
manifold pressure should be the same at a given engine temperature, speed and load. Intake manifold pressure will vary for
different engines and vehicle models. By monitoring the gauge, the operator can avoid engine problems.

Application Air Pressure Gauge (High Level Cluster Only)

Air gauges are connected to the air brake system via sensors. They will indicate the brake application pressure from either
the front, rear or trailer circuit pressure. The gauge will not register air pressure until the foot brake pedal is depressed or the
trailer hand brake is applied.

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Exhaust Pyrometer Gauge (High Level Cluster Only)
The exhaust pyrometer gauge indicates the exhaust temperature, which helps the operator get the best efficiency from the
engine. Variations in engine load can cause the exhaust temperature to vary. For example, high exhaust gas temperature is
the result of prolonged engine lugging or over-fueling. If the pyrometer reading shows that exhaust temperature exceeds nor-
mal, reduce fuel to the engine until the exhaust temperature is reduced. Shift to a lower gear if the engine is overloaded.

Exhaust Pyrometer Gauge (High Level Cluster Only)

The exhaust pyrometer gauge indicates the exhaust temperature, which helps the operator get the best efficiency from the
engine. Variations in engine load can cause the exhaust temperature to vary. For example, high exhaust gas temperature is
the result of prolonged engine lugging or over-fueling. If the pyrometer reading shows that exhaust temperature exceeds nor-
mal, reduce fuel to the engine until the exhaust temperature is reduced. Shift to a lower gear if the engine is overloaded.

Trailer Air Supply Valve

The trailer air supply valve is a red octagonally-shaped knob. Pull the knob to apply the trailer emergency brakes. Push the
knob to pressurize the trailer air reservoir and release the trailer emergency brakes. The trailer air supply valve should not be
used for parking. .

Tractor Parking Brake Valve

The tractor parking brake valve is a yellow diamond-shaped knob. Pull the knob to apply the tractor parking brakes. Push the
knob to release the tractor parking brakes. The tractor parking brake valve applies the tractor parking brakes and the trailer
brakes, if equipped

Switches
Inter-Axle Differential Lock
The inter-axle differential lock eliminates slipping between axles to improve traction. The switch has a safety latch to prevent
accidental engagement.

W3028391

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 When the lock is engaged, a tell-tale lights up in the instrument cluster.

W3006119

Inter-Axle Tell-Tale

A differential lock should only be used on a slippery surface, NOT when driving on good road conditions. If a differential lock
tell-tale is activated in the instrument cluster, DO NOT make turns until the tell-tale has gone out.

Auxiliary
Generic switches are available for auxiliary functions that are installed by the customer. These switches can be purchased
from your authorized Volvo Truck dealer.

W3005502

Auxiliary Switch

Notes

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Fifth Wheel Touch Lock

DANGER
Activation of the kingpin lock release switch ONLY unlocks the kingpin latch mechanism. To relock the latch mechanism,
you MUST pull forward and then back up to re-engage the kingpin lock mechanism. Failure to follow these instructions
can result in separation of the trailer from the tractor causing personal injury or death.

• Park the vehicle and apply the parking brake for the tractor trailer.

• Put the gearshift in neutral and chock the trailer wheels.

• Lower the trailer landing gear to the ground.

• Disconnect the air/electric lines to the trailer.

• To release the fifth wheel kingpin lock, push the switch up. This will release the locking mechanism. Once activated, the
switch will not relock the fifth wheel kingpin locking mechanism.

• Release the parking brake and drive the tractor 12 inches away from the kingpin.

• Deflate the air suspension by pressing the bottom of the suspension switch. After the suspension lowers, pull clear of the
trailer and reinflate the suspension.

• The fifth wheel kingpin lock will only relock if you follow the complete recoupling procedures.

W3004428

Marker Interrupt
This switch interrupts power to the marker lights when held down. When released, it springs back to the ON position and re-
turns power to the marker lights.

W3001352

Marker Interrupt Switch

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 Traction Control
If the vehicle is equipped with a Traction Control, the switch can be used to disable the traction control feature, and therefore
increase wheel spin. This may be useful for decreasing the chances of getting bogged down when driving in heavy snow,
slush or muddy conditions. Refer to Volvo Exhaust Brake for more information.

W3001336

Traction Control Switch

Suspension Dump
Vehicles with rear air suspension have a control for deflating the air springs. Use this feature when uncoupling from trailers.

W3001341

Suspension Dump Switch

CAUTION
The vehicle must never be driven with the air springs deflated. Damage to air suspension parts will occur if springs are not
inflated properly.

The suspension dump switch has a safety latch to prevent accidental engagement. Depress the latch and press in the bot-
tom part of the switch to deflate the air springs. A tell-tale in the instrument cluster will light up when the switch is in the ON
position.

This switch controls a chassis-mounted electric over air solenoid valve. When the switch is rocked down to the ON position
and the ignition switch is turned to the OFF position, the solenoid valve will no longer have power and the suspension will
inflate.

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Fifth Wheel Slide

DANGER
The release must never be operated while the vehicle is operating on the road. Fifth wheel position adjustment must only
be done when stationary. Damage to the fifth wheel, trailer kingpin and slider may occur if not operated properly and may
lead to an accident, causing serious personal injury or death.

The sliding fifth wheel uses an air-operated release mechanism and is used for distributing loads more favorably between
the front and rear axles to comply with varying state and provincial laws. Depress the latch and press in the bottom part of
the switch to release the slider locks.

W3001346

Sliding Fifth Wheel Switch

Snow Plow Lamps

Vehicles specified with this option have the following:

• Turn ON low beam snow plow head lamps.

• Turn OFF main head lamps, high beam, fog and driving lights.

• In driving mode, DRL remains ON.

• Snow plow direction indicators are available.

W3005382

Sleeper Fan Speed Switch

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 Beacon Lamps

W3005428

Sleeper Fan Speed Switch

Back of Cab Light

To activate the back of cab light, press the bottom part of the switch. The light will stay on until the switch is turned to the
OFF position. Back of cab lights are available as a flush-mounted light in the middle of the cab rear wall or as a high-mounted
light on the side of the cab.

W3001355

Back of Cab Light Switch

Notes

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Power Take-Off (PTO)
There are two basic types of PTOs available: Engine-mounted and transmission-mounted.

The transmission-mounted PTO is clutch dependent, which means that operation can be regulated by depressing or re-
leasing the clutch pedal. This PTO should NOT be in use while driving.

The engine-mounted PTO is directly mounted to the engine and is engaged with a bypass valve operated by the switch.
This PTO can be in use while driving.

CAUTION
It is important to only engage the switch when the PTO is required. Leaving the PTO pump engaged when not needed can
lead to poor performance and pump damage.

Transmission-Mounted PTO
Engage the PTO by depressing the clutch pedal and pressing in the bottom part of the switch. Release the clutch pedal to
start the PTO.

One or two PTOs can be run at the same time. Applications change depending on customer needs and components.

W8117313

Engine-Mounted PTO, VN
The engine should be running at low idle and the vehicle should be stopped or running at very low speed before engaging
power take-off. Engage the PTO by depressing the locking tab and at the same time, depressing the main part of the switch.
The PTO is now in operation and hydraulic flow can be regulated by the engine speed.

Notes

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 PTO Speed Adjustment
Engage the PTO before adjusting the speed. For the PTO speed adjustment to function, the Cruise Control or idle adjust
cannot be active, brake and clutch pedals must be released, and vehicle speed must be under approximately 8 km/h (5
mph).
To set engine speed:
1 Set the PTO/CC switch in the ON position.
2 Depending on configuration, the engine speed may automatically be selected when the PTO dash switch is activated (Vol-
vo engines only).
3 If NOT, then

• Volvo engines: Press the RESUME button to achieve the preset PTO engine speed. Alternatively, the accelerator ped-
al can be used to achieve the desired engine speed, and press SET+ or SET- to hold that speed

• Cummins engines: Press either the RESUME, SET+, or the RESUME and SET+ buttons simultaneously to achieve
one of three possible preset speeds.

W3002499

To increase/decrease engine speed:

1 Volvo engines: Press and release the SET+ or SET- toggle switch to increase/decrease speed in increments (increment
size depends on programmed value).
2 Cummins engines: Press and hold the SET+ or SET- toggle switch to increase/decrease speed. When the switch is re-
leased, the engine speed sets at current speed.
To deactivate PTO speed function. Set the PTO/CC switch to the OFF position.
or
2. Depress the service brake pedal.
or
3. Depress the clutch pedal (Programmable).
or
4. Increase vehicle speed above PTO working range (typically 8 km/h [5 mph]).

Notes

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Engine Brake

DANGER
When operating your tractor bobtail (without a trailer) or on slippery roads, the engine brake switch must be in the OFF po-
sition. Failure to follow these instructions can result in loss of vehicle control, serious personal injury or death.

DANGER
A vehicle speed retarding device is not intended to replace the service brake system on your vehicle nor intended to bring
your vehicle to a stop. A vehicle speed retarding device is only intended to retard the speed of your vehicle under certain
conditions.
Using the retarding device as a brake could result in loss of vehicle control and personal injury or death.

Note: It is normal for a slight delay to occur in the application of a vehicle speed retarding device. When using a device of this
type, be sure to think ahead and analyze conditions in order to use the device properly.

Several types of engine brakes can be installed or are standard on certain engines. All are used to reduce wear on the ve-
hicle brake linings.

Several types of engine brakes can be installed or are standard on certain engines. All are used to reduce wear on the ve-
hicle brake linings.

Volvo Variable Geometry Turbo Brake VN

The variable geometry turbo brake is standard equipment on the Volvo 11H and 13H engines. Software is used to close the
variable geometry turbocharger, creating retardation. The switch for exhaust brake has two positions: ON/OFF.

W3005433

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 Transmission Retarder, VHD Only

DANGER
DO NOT use the retarder on wet or slippery roads. The retarder may cause vehicle to slide and cause an accident which
could result in injury or death.

CAUTION
Apply the retarder only when engine is at closed throttle.

CAUTION
Observe transmission and engine temperatures. Select the lowest possible transmission range in order to maximize the
cooling system capacity and retarding. If overheating occurs, decrease the use of the retarder and use service brakes in-
stead. Check the retarder overtemp light.

Note: The retarder is automatically disabled when the ABS (anti-lock brake system) is active.

The Transmission Retarder is an option with Allison HD and MD transmissions. It is activated by an on/off switch in the auxili-
ary panel and is controlled by a stalk switch mounted in front of the wiper switch. You can set six different levels with the stalk
switch.

W3004428

W3004405

Note: Vehicle brake lights are always on when the transmission retarder is active.

For complete warnings and instructions, refer to the Allison Transmission manual.

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Volvo Engine Brake I-VEB
The Volvo Engine Brake (I-VEB) works together with the variable geometry turbocharger to provide retarding horsepower at
low engine rpm. The I-VEB is standard equipment on the Volvo 16H engine and optional on the 13H and 11H engines. The I-
VEB has a six position control located on the steering column, just forward of the wiper stalk.

T5012243

• O = Off

• A = Engine Brake Cruise Control? In this position when the Cruise Control is enabled and the vehicle speed exceeds the
set cruise speed, the I-VEB will engage with the infinite control (within the limits of the engine brake) to maintain that
speed

• 1 = 40% Engine Braking

• 2 = 70% Engine Braking

• 3 = 100% Engine Braking

• B = I-Shift Brake Program — When ordered in conjunction with the Volvo I-Shift Transmission, the controls are integrated

Notes

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 Air Conditioning Electronic Climate Control (ECC)

W8003062

1 AC OFF button: Turns the air conditioning OFF. The arrow in the illustration shows the LED light which is AMBER or RED
indicating the AC compressor is OFF. The ECC will still try to maintain the selected temperature in the cab without the
compressor.
2 Temperature Knob
3 Fan Speed Knob
4 Recirculation Button
5 Air Distribution Knob

Recirculation
Press recirculation to circulate the air in the cab. Only a small amount of air is taken directly from outside.
The light in the button comes on when the button is pressed for air recirculation.

Temperature Control Settings ECC

Maximum Cold Setting
The temperature knob should be set to the far left. The fan speed knob should be set to AUTO and the air distribution knob
should be on AUTO.

Maximum Heat Setting

The temperature knob should be set to the far right. The fan speed knob should be set to AUTO and the air distribution knob
should be on AUTO.

Normal Setting
When the temperature control is set to any temperature between 18°C and 27°C (64°F and 80°F), the ECC automatically ad-
justs itself close to the selected temperature, similar to a thermostat.

Fan Speed
The fan speeds are 1 through 4. The fan will not operate when "0" is selected, but air will flow when set to fresh air mode due
to ram air effect when the truck is moving.

• The ECC automatically circulates air at fan speed 4 when there is a big difference between the selected temperature and
the temperature measured by the in-cab sensor. However, as the temperature in the cab gets closer to the selected tem-
perature, the fan speed begins to slow down.

• If maximum cold or maximum heat are selected, the ECC automatically circulates air at fan speed 4 when AUT is se-
lected. At any other selected fan speed the system adjusts and conforms to the chosen speed.

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Mist and Ice Removal

DANGER
DO NOT attempt to drive with the windshield covered by mist, or fog or frost. The visibility is reduced, which could lead to
an accident causing severe personal injury or death.

1 Turn the knob to defrost.

2 Rotate the temperature knob to add heat as necessary.
3 Set the fan speed knob to maximum (the extreme right).
Use these instructions to keep the windshield clear at all times. Maximum heat output for fast defrosting can only happen
after the engine has reached operating temperature. While driving in extreme cold, adding heat to the windshield may
change drifting snow to ice, in this case, setting the air distribution to floor and/or panel only may allow the drifting snow to be
brushed off by the windshield wiper. Clean the inside of the window using normal window cleaner in order to minimize the risk
of misting. Clean more often if a passenger smokes in the cab.

Horn
Electric and air horns are standard equipment. They are both operated from the steering wheel or center pad.
The airbag can be pressed down anywhere around the edge to engage the air horn.

W6001503

1 Air Horn
2 Electric Horn (city horn)

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