Starting and driving -> Economical driving for Your Volvo Xc90 SUV 2020

STARTING AND DRIVING  
Activating and deactivating Hill  
Descent Control* using the  
function button  
There is a function button for assistance on  
steep gradients with Hill Descent Control in  
the center display's Function view if the vehi-  
cle is not equipped with a drive mode control  
in the tunnel console.  
Related information  
Economical driving  
Hill Descent Control* (p. 425)  
Drive economically and more environmentally  
conscious by thinking ahead and avoiding  
rapid starts and stops.  
Adapt your driving style and speed to the cur-  
rent traffic conditions.  
Changing drive mode* (p. 413)  
Observe the following rules:  
For lower fuel consumption, activate Eco  
drive mode.  
Selecting Hill Descent Control in the  
center display's Function view  
HDC only works at low speeds.  
Use the Eco Coast function in drive mode  
Eco - engine braking is deactivated, allow-  
ing the vehicle's kinetic energy to be used  
to roll greater distances.  
Tap the Hill Descent Control button to  
activate or deactivate the function.  
Use gear D as often as possible and avoid  
using the kick-down function.  
For manual gear shifting, use the highest  
possible gear for the current traffic situa-  
tion and road conditions - fuel consump-  
tion is reduced at lower engine speeds  
(rpm). Use the gear indicator16  
.
> An indicator light in the button will illu-  
minate when the function is activated.  
Maintain a steady speed and a generous  
following distance to traffic ahead to mini-  
mize braking.  
When the engine is switched off, the function  
will be automatically deactivated.  
Fuel consumption is increased at high  
speeds - air resistance increases with  
speed.  
The function is deactivated when driving at  
high speeds and must be reactivated at  
lower speeds if so desired.  
16  
Only available in certain markets.  
426  
* Option/accessory.  
 
STARTING AND DRIVING  
The trip computer's current fuel consump-  
tion indicator can help promote more fuel-  
efficient driving.  
Preparing for a long trip  
WARNING  
It is important to have the vehicle's systems  
and equipment checked carefully before driv-  
ing long distances.  
Never turn off the engine while the vehicle  
is moving, e.g. when driving downhill. This  
deactivates certain important systems  
such as power steering and brakes.  
Do not warm up the engine by idling. It is  
better to begin driving normally immedi-  
ately after starting the engine. A cold  
engine uses more fuel than a warm  
engine.  
Check that  
the engine is running properly and that  
fuel consumption is normal  
Other factors that decrease fuel  
consumption  
there are no leaks (fuel, oil or other fluid)  
the brake pedal is functioning properly  
Whenever possible, avoid using the vehi-  
cle to drive short distances. The engine  
does not have time to reach a normal  
operating temperature and this leads to  
increased fuel consumption.  
Dirty air cleaner.  
Dirty engine oil and clogged oil filter.  
Incorrect front-end alignment.  
Incorrect wheel alignment.  
all lights are working adjust the head-  
light height if the vehicle is carrying a  
heavy load  
Use engine braking to brake the vehicle,  
when this is safe for other road users.  
tire tread depth and air pressure are at  
correct levels. Change to snow tires when  
driving in areas where there is a risk of  
snowy or icy roads  
Some of the above items and others are  
checked as part of Volvo's standard mainte-  
nance schedule.  
Maintain the correct pressure in the tires  
and check pressure regularly.  
Related information  
the start battery is sufficiently charged  
the wiper blades are in good condition  
The type of tires used could affect fuel  
consumption - consult a retailer for advice  
on suitable tires.  
Drive-E purer driving pleasure (p. 28)  
Eco drive mode (p. 413)  
Related information  
Checking tire pressure (p. 529)  
Remove unnecessary items from the vehi-  
cle - the heavier the load, the higher the  
fuel consumption.  
Checking tire pressure (p. 529)  
Filling washer fluid (p. 637)  
Roof loads increase air resistance and  
increase fuel consumption. Remove roof  
boxes, ski racks, etc. that are not in use.  
Vehicle modem settings (p. 505)  
Loading recommendations (p. 561)  
Driving with a trailer (p. 441)  
Avoid driving with the windows open.  
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427  
STARTING AND DRIVING  
Pilot Assist* (p. 296)  
Winter driving  
Slippery driving conditions  
To help optimize traction and roadholding,  
Volvo recommends using snow tires on all  
wheels whenever there is a risk of snow or ice  
on the road.  
It is important to check the vehicle before  
driving in cold/snowy conditions to make  
sure it can be driven safely.  
Tire sealing system (p. 545)  
Before the cold season arrives:  
Make sure the engine coolant contains  
50% antifreeze. This mixture helps pro-  
tect the engine from frost erosion down to  
approx. –35 °C (–31 °F). Do not mix dif-  
ferent types of antifreeze as this could  
pose a health risk.  
Certain countries require use of winter tires  
by law. Not all countries permit the use of  
studded tires.  
Keep the fuel tank well filled to prevent  
condensation from forming.  
Practice driving on slippery surfaces under  
controlled conditions to learn how the vehicle  
reacts.  
Check the viscosity of the engine oil. Oil  
with low viscosity (thinner oil) improves  
cold-weather starting and reduces fuel  
consumption when driving with a cold  
engine.  
Related information  
Snow tires (p. 543)  
Snow chains (p. 544)  
Braking on salted roads (p. 397)  
Braking on wet roads (p. 397)  
Filling washer fluid (p. 637)  
Start battery (p. 595)  
Low-viscosity oil should not be used with  
hard driving or in hot weather.  
Replacing windshield wiper blades  
(p. 635)  
Check the condition and charge level of  
the start battery. Cold weather places  
greater demands on the start battery and  
reduces its capacity.  
Changing rear window wipers (p. 634)  
Refilling coolant (p. 586)  
Use washer fluid containing antifreeze to  
help prevent ice from forming in the  
washer fluid reservoir.  
428  
* Option/accessory.