User Manual - Page 342

For 2016 VOLVO XC90.

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STARTING AND DRIVING
340
Remove snow tires when threat of snow or
ice has ended.
Note that roof racks, ski racks, etc, increase
air resistance and also fuel consumption.
At highway driving speeds, fuel consumption
will be lower with the air conditioning on and
the windows closed than with the air condi-
tioning off and the windows open.
Using the onboard trip computer's fuel con-
sumption modes can help you learn how to
drive more economically.
Other factors that decrease gas mileage are:
Dirty air cleaner
Dirty engine oil and clogged oil filter
Dragging brakes
Incorrect front end alignment
Some of the above mentioned items and others
are checked at the standard maintenance inter-
vals.
Handling and roadholding
Vehicle load, tire design and inflation pres-
sure all affect vehicle handling. Therefore,
check that the tires are inflated to the rec-
ommended pressure according to the vehicle
load. Loads should be distributed so that
capacity weight or maximum permissible axle
loads are not exceeded.
At the specified curb weight your vehicle has
a tendency to understeer, which means that
the steering wheel has to be turned more
than might seem appropriate for the curva-
ture of a bend. This ensures good stability
and reduces the risk of rear wheel skid.
Remember that these properties can alter
with the vehicle load. The heavier the load in
the cargo compartment, the less the ten-
dency to understeer.
Driving through standing water
The vehicle should be driven with extreme cau-
tion if it is necessary to drive through standing
water.
The vehicle can be driven through water up to a
depth of approximately 17.7 in. (45 cm) at walk-
ing speed to help prevent water from entering
the differential and the transmission. This
reduces the oil's lubricating capacity and may
shorten the service life of these components.
Take particular care when driving through
flowing water.
After driving through water, apply the brakes
and check that they are functioning correctly.
Clean the electrical connections for trailer
wiring after driving in mud or water.
When driving through water, maintain low
speed and do not stop in the water.
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