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150 Driving
If the cruise control is engaged, the auxiliary brakes
first start working when the speed is 7 km/h above the
set speed.
Full auxiliary brakes (position 2) cannot be engaged
before the engine has attained working temperature. If
the engine brake is engaged at too low a temperature, a
symbol is shown in the display or amongst the check
lamps and the information lamp lights.
Stalk
A figure or letter in the display shows which position
the lever is in.
Automatic position A
The auxiliary brakes start working together with the
service brakes when the brake pedal is depressed
("Brake blending"). It is only in position "A" that the
auxiliary brakes begin to take effect together with the
normal wheel brakes when the brake pedal is
depressed.
If the engine cruise control is engaged, it uses the
auxiliary brakes to keep the set speed.
Manual positions 1-3
The auxiliary brake will be applied increasingly for
each step of the stalk switch. A Volvo workshop can
change the degree to which the auxiliary brake is
engaged at each position.
There are even stalk switches with only manual
positions. Manual position means that full auxiliary
braking is engaged.
Release the accelerator pedal for the auxiliary brake to
take effect.
In order for the auxiliary brakes to function when the
accelerator is released during driving,
• the truck must be in gear, and
• the clutch must be released
Symbol which shows that the
temperature is too low.
0 Auxiliary brake disengaged
A Automatic position
1-3 Manual position
B Braking program (only on trucks
with I-shift or Powertronic)
The display shows that the stalk is in
position 2.
(2)
J3014455
J0010263
11:45
AM
7,658.8 km
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