Volvo XC 90 Owner's Manual page 428

STARTING AND DRIVING
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Activating the freewheel function
The function is activated when the accelerator
pedal is fully released, in combination with the
following parameters:
•
Eco
Drive mode is activated.
•
The gear selector is in D position.
•
Speed within the range of
approx. 65-140 km/h (40-87 mph).
•
The road's downhill gradient is not steeper
than approx. 6%.
COASTING
The driver display shows
freewheel function is being used.
Limitations
The freewheel function is not available if:
•
Engine and/or gearbox are not at normal
operating temperature.
•
The gear selector is moved from the D posi-
tion and the manual position.
•
The speed is outside the range of
approx. 65-140 km/h (40-87 mph).
•
The road's downhill gradient is steeper than
approx. 6%.
•
Manual gear changing is performed with the
steering wheel paddles*.
Deactivating and switching off the freewheel
function
In certain situations it may be desirable to deacti-
vate or switch off the function in order to use
426
engine braking. Examples of such situations may
be on steep downhill gradients or before an
imminent overtaking manoeuvre - in order to be
able to do it in the safest way possible.
Deactivate the freewheel function as follows:
•
Actuate the accelerator or brake pedal.
•
Move the gear selector to manual position.
•
Changing gear with steering wheel paddles*.
Switch off the freewheel function as follows:
•
Change drive mode*, or switch off the
when the
Driving mode ECO
Even without the freewheel function, it is possible
to freewheel for short distances. This, in turn,
reduces consumption. However, for the best fuel
economy it is better to have the freewheel func-
tion activated and be able to freewheel for longer
distances.
Cruise control Eco Cruise
When using the cruise control in the Eco drive
mode, the car's acceleration and deceleration will
be lower compared to other drive modes, which
enables further fuel savings. This means that the
car's speed can be slightly above or below the
set speed.
•
On a smooth road, the car's speed can devi-
ate from the set speed when the cruise con-
trol is active and the car free-rolls.
•
On a steep uphill slope, the car's speed
drops until a downshift is made, then
•
ECO gauge in the driver display
The ECO gauge indicates how fuel-efficient the
driving is:
in the function view. •
•
The ECO gauge also has an indicator to show
how a reference driver would drive the car under
the same driving conditions. This is indicated with
the short pointer on the gauge.
reduced acceleration starts in order to
achieve the set speed.
On a downhill slope where the car free-rolls,
the car's speed can be slightly above or
below the set speed. The function uses nor-
mal engine braking to maintain the set
speed. The foot brake is also used if neces-
sary.
With fuel-efficient driving, the gauge shows a
low value with the pointer in the green zone.
With non-fuel-efficient driving, e.g. during
heavy braking or heavy acceleration, the
gauge shows a high value.
* Option/accessory.