MAINTENANCE
INFORMATION

MI16-06

DATE :

FEBRUARY 2016 SECTION: 07 - TRANSMISSION
SUBJECT :
New Auto Engine Brake

APPLICATION
Model

VIN

X3-45 coaches
Model Year : 2016 and up

From 2PCG33492GC736019

X3-45 VIP motorhomes
Model Year : 2016 and up

From 2PCBS3492GC736017

X3-45 VIP commercial use
Model Year : 2016 and up

From 2PCC33492GC736018

H3-41, H3-45 coaches
Model Year : 2016 and up

From 2PCH33491GC713190

H3-45 VIP motorhomes
Model Year : 2016 and up

From 2PCV33491GC713189

DESCRIPTION
Volvo Engine Brake (VEB) with Automatic control mode
A new Automatic control mode is now available on Prevost vehicles equipped with the Volvo Engine Brake
(VEB),
mode (which is the default mode set at vehicle start-up), the engine brake is
When running in AUTO
mode
gradually applied to 100% brake power when the driver pushes the brake pedal. Since AUTO
will not reduce vehicle momentum unless the brakes are applied, it will have no impact on fuel
consumption.
The driver can also choose two other modes using the steering wheel switches; Engine brake LOW
and engine brake HIGH .
When set to the engine brake LOW
mode, 50% of the engine brake power will be applied when the
will apply 100% of the braking power.
driver releases the accelerator pedal. Using engine brake HIGH
It must be noted that since engine brake LOW
and engine brake HIGH
will reduce vehicle speed
upon release of the throttle pedal, they may negatively impact fuel consumption if used for extended
periods of time.

MI16-06 / Page 2 / 3

NOTE
On vehicles equipped with an optional engine brake switch, it is possible to deactivate
the engine brake (OFF mode). To do so, the driver must press the engine brake switch
located on the left side of the dashboard.
mode, the switch must be pressed again (cycling of the
To reactivate the AUTO
ignition switch would have the same effect).The driver can also directly switch from the
or HIGH
mode using the steering wheel.
OFF mode to the engine brake LOW

NOTE
When using engine brake LOW
or HIGH
mode, pressing the steering switch OFF button
will switch back to the default AUTO
mode.

DRIVER PEDALS

ENGINE BRAKE MODE

ANY
POSITION

ENGINE BRAKE FORCE

0%
With engine brake switch

ACCELERATOR PEDAL
RELEASED

0%

BRAKE PEDAL PUSHED

100%

ACCELERATOR PEDAL
RELEASED

50%

100%
ENGINE BRAKE FORCE APPLIED VS SELECTED MODE AND DRIVER PEDAL POSITION.

MI16-06 / Page 3 / 3

NOTE
Engine brake is safe to use in any road conditions including adverse conditions.
Cruise control and engine brake
When cruise control is enabled by the driver, the engine brake mode is forced to AUTO
mode
and the engine brake will progressively engage up to 100% if the selected cruise speed is
exceeded by approximately 2 Km/h (1.25 mph). Manually switching to engine brake LOW
or
HIGH
using the steering switches will deactivate the cruise control.

CRUISE CONTROL & SPEED

ENGINE BRAKE MODE

ENGINE BRAKE FORCE

0%
With engine brake switch

+

UP TO

100%

CRUISE SPEED SET
+ 2 Km/h

N/A

N/A
ENGINE BRAKE FORCE APPLIED WITH CRUISE CONTROL

NOTE
On vehicles equipped with the Allison transmission, if cruise control is enabled, the current
engine brake mode is saved in the vehicle computer (MCM) memory and the engine brake
mode is set to AUTO mode . When the cruise control is disabled, the engine brake mode
changes back to the mode saved in the MCM memory.

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