2019 VOLVO XC90 TWIN ENGINE ECO mode

STARTING AND DRIVING
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469
Using the electric motor only
When using the electric motor, Volvo Twin
Engine provides a combination of good fuel
economy, low emissions and high performance.
For energy-efficient driving:
Select the Pure drive mode to help maximize
driving range using only the electric motor.
Balance energy requirements using the
accelerator pedal. Use the indicator on the
instrument panel's hybrid gauge to see avail-
able electric power and avoid starting the
combustion engine unnecessarily.
When braking is necessary, brake gently
using the brake pedal. This will recharge the
hybrid battery.
Activate the
Hold function in the Function
view at high speeds when traveling farther
than is possible using the hybrid battery's
capacity.
Reduce current consumption in the passen-
ger compartment by reducing e.g. fan speed,
electric heating, or air conditioning use.
Also follow the general economical driving advice
regarding speed, tires and load to maximize
range.
Related information
General information about Twin Engine
(p. 416)
Economical driving (p. 467)
Hybrid gauge (p. 87)
Factors affecting electric motor range
(p. 469)
Starting and stopping the combustion engine
in Twin Engine vehicles (p. 454)
"Hold" and "Charge" functions (p. 471) Factors affecting electric motor
range
A number of factors affect the electric motor's
driving range. The ability to achieve a long driv-
ing range varies according to the outside condi-
tions and to how the vehicle is driven.
The certified value for the distance that can be
driven using the electric motor should not be
considered an expected driving range. The actual
range is dependent on a number of factors.
Factors affecting driving rangeThe driver can influence some factors affecting
driving range, but not all.
The longest range is achieved under very favora-
ble conditions when all factors positively influ-
ence range.

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470
Factors the driver cannot control
There are several outside conditions that affect
range to varying degrees:

the current traffic situation
driving short distances
topography
ambient temperature and headwinds
road conditions and road surface.
The following table shows the approximate rela-
tionship between ambient temperature and driv-
ing range with normal climate settings and with
climate settings turned off.
Up to a certain limit, warmer ambient tempera-
tures increase the electric motor's driving range. Ambient tem-
perature
Climate set-
tings turned
offNormal cli-
mate set-
tings
30 °C (86 °F) 95 %

80 %
20 °C (68 °F) 100 % 90%
10 °C (50 °F) 90 % 80 %
0 °C (32 °F) 80 % 60 %
-10 °C (14 °F) 70 % 40 %
Factors the driver can control
The driver should be aware that the following fac-
tors help conserve energy and improve driving
range:
charging the battery regularly
preconditioning
Pure drive mode
climate control settings
speed and acceleration
the
Hold function
tires and tire pressure.
The following table shows the approximate rela-
tionship between constant speed and driving
range. Driving at a lower constant speed helps
increase the electric motor's driving range. Constant speed
100 km/h (62 mph)
50 %
80 km/h (50 mph) 70 %
60 km/h (37 mph) 90 %
50 km/h (31 mph) 100 %
NOTE
The figures shown in the tables pertain to
a new vehicle.
None of the figures are absolute and are
affected by e.g. driving style, environment
and other conditions.
Related information
Using the electric motor only (p. 469)
Economical driving (p. 467)
"Hold" and "Charge" functions (p. 471)
Drive modes (p. 454)

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471
"Hold" and "Charge" functions
In certain situations, it can be useful to control
the hybrid battery's charge level while driving.
This is possible with the Hold and Charge func-
tions.
Hold and Charge are available in all drive modes. The functions will switch off if Pure drive
mode is activated.
Function buttons for Hold and ChargeThe functions can be activated in the center dis-
play's Function view.
Hold
Battery level sustained for
later use.
This function retains the charge
in the hybrid battery for the
electric motor and saves availa-
ble electrical current for use at
a later time, such as when driving in an urban
area or residential neighborhood.
The vehicle will function as in normal hybrid driv-
ing with a discharged battery - in addition to
reusing energy from e.g. regenerative braking, the
combustion engine will be used more frequently
to maintain the charge in the battery.
Charge
Engine charges hybrid
battery.
This function charges the
hybrid battery with the help of
the combustion engine for
increased use of the electric
motor at a later time.
Symbols in the instrument panel The symbol is displayed in the hybrid battery gauge
when Hold is activated. The symbol is displayed in the hybrid battery gauge
when Charge is activated.
Related information
Using the electric motor only (p. 469)
Economical driving (p. 467)
Hybrid gauge (p. 87)

STARTING AND DRIVING
472Preparing for a long trip
It is important to have the vehicle's systems and
equipment checked carefully before driving long
distances.
Check that:
the engine is running properly and that fuel
consumption is normal
there are no leaks (fuel, oil or other fluid)
the brake pedal is functioning optimally
all lights are working ‒ adjust the headlight
height if the vehicle is carrying a heavy load
tire tread depth and air pressure are at cor-
rect levels. Change to snow tires when driv-
ing in areas where there is a risk of snowy or
icy roads
the start battery is sufficiently charged
the wiper blades are in good condition
Related information
Checking tire pressure (p. 567)
Filling washer fluid (p. 662)
Winter driving (p. 472)
Economical driving (p. 467)
Vehicle modem settings (p. 545)
Loading recommendations (p. 598)
Driving with a trailer (p. 483)
Pilot Assist (p. 316)
Speed limiter (p. 283)
Tire sealing system (p. 582) Winter driving
It is important to check the vehicle before driving
in cold/snowy conditions to make sure it can be
driven safely.
Before the cold season arrives: Make sure the engine coolant contains 50%
antifreeze. This mixture helps protect the
engine from frost erosion down to
approx. -35 °C (-31 °F). Do not mix different
types of antifreeze as this could pose a
health risk.
Keep the fuel tank well filled to prevent con-
densation from forming.
Check the viscosity of the engine oil. Oil with
low viscosity (thinner oil) improves cold-
weather starting and reduces fuel consump-
tion when driving with a cold engine.
CAUTION Low-viscosity oil should not be used with hard
driving or in hot weather.

Check the condition and charge level of the
start battery. Cold weather places greater
demands on the start battery and reduces its
capacity.
Use washer fluid containing antifreeze to
help prevent ice from forming in the washer
fluid reservoir.

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473
Slippery driving conditionsFor optimal traction and roadholding, Volvo rec-
ommends using snow tires on all wheels when-
ever there is a risk of snow or ice on the road.
NOTECertain countries require use of winter tires
by law. Not all countries permit the use of
studded tires.
Practice driving on slippery surfaces under con-
trolled conditions to learn how the vehicle reacts.
Related information

Snow tires (p. 581)
Snow chains (p. 581)
Braking on salted roads (p. 441)
Braking on wet roads (p. 441)
Filling washer fluid (p. 662)
Start battery (p. 627)
Replacing windshield wiper blades (p. 660)
Changing rear window wipers (p. 659)
Refilling coolant (p. 625) Driving through standing water
Driving the vehicle through a deep pool of stand-
ing water on a water-covered roadway is called
fording. This must be done with great caution.
To prevent damage to the vehicle when driving
through water (e.g. on flooded roads):
Do not drive in water higher than the floor of
the vehicle. If possible, check the depth of
the water at its deepest point before driving
through it. Be particularly careful when driv-
ing through flowing water.
Always select the
Off Road drive mode
before driving in water to ensure the gasoline
engine is running.
Do not drive faster than walking speed.
Do not stop the vehicle in the water. Drive
carefully forward or back the vehicle out of
the water.
Remember that waves created by passing
vehicles could cause the water level to rise
above the vehicle's floor level.
Avoid driving through salt water to help avoid
the risk of corrosion.
CAUTION Parts of the vehicle (e.g. engine, transmission,
driveline, electrical components, etc.) can be
damaged if the vehicle is driven through water
higher than its floor level. Damage to any
components caused by flooding, vapor lock or
insufficient oil is not covered under warranty.
If the engine stalls while the vehicle is in
water, do not attempt to restart it. Have the
vehicle towed on the bed of a tow truck to a
workshop - an authorized Volvo workshop is
recommended.
CAUTION
Because it can be difficult to determine the
water depth, avoid driving through standing or
running water.
When you have passed the water, press lightly on
the brake pedal and check that the brakes are
functioning properly. Water, mud, slush, etc. can
make the brake linings slippery, resulting in
delayed braking effect.
If the vehicle is equipped with a trailer coupling
contact, clean the contact after driving in water or
mud.
Related information

Recovery (p. 489)
Low Speed Control (p. 464)

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480
the vehicle safely and letting the engine idle
for a few minutes to let the transmission
cool.
If the vehicle begins to overheat, the air con-
ditioning may be temporarily switched off.
After a prolonged period of driving in
demanding conditions, do not turn off the
engine immediately after stopping.
NOTE It is normal for the engine's cooling fan to
operate for a short time after the engine is
switched off.
Symbols in the instrument panel
Symbol
Meaning High engine temperature. Follow
the recommendations provided.
Low coolant level. Follow the rec-
ommendations provided.
Transmission hot/overheated/cool-
ing. Follow the recommendations
provided.
Related information

Refilling coolant (p. 625)
Driving with a trailer (p. 483)
Preparing for a long trip (p. 472) Battery drain
The electrical functions in the vehicle drain the
battery to varying degrees. Avoid using ignition
mode II when the engine is switched off. Use
ignition mode I instead, as this uses less electri-
cal current.
Note that certain accessories may also drain
power from the electrical system. Do not use
functions that use a lot of electrical current when
the engine is turned off. Examples of such func-
tions are: blower
headlights
windshield wipers
audio system (especially at high volume).
If the starter battery voltage is low, a message is
shown in the driver display. The vehicle's energy-
saving function will then turn off or reduce certain
functions, such as the blower and/or the audio
system.
– Charge the battery by starting the engine
and let it run for at least 15 minutes (driving
charges the battery faster than letting the
engine idle).
Related information
Start battery (p. 627)
Ignition modes (p. 437)

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481
Jump starting using another battery
If the start battery is discharged, current from
another battery can be used to start the vehicle. Jumper cable connecting points.
CAUTION
The charging point of the vehicle is only
intended for jump starting the vehicle in ques-
tion. The charging point is not intended for
jump-starting another vehicle. Using the
charging point to start another vehicle could
cause a fuse to blow, which would cause the
charging point to stop working.
If a fuse has blown, 12 V Battery Fuse failure
Service required will be displayed in the instru-
ment panel. Volvo recommends contacting an
authorized Volvo workshop. To avoid short circuits or other damage, the fol-
lowing steps are recommended when jump star-
ting the battery:
1.
Put the ignition in mode 0.
2.
Make sure the auxiliary battery (the battery
used to jump start the discharged battery)
has a voltage of 12 volts.
3. If the auxiliary battery is in another vehicle, turn off that vehicle's engine and make sure
that the vehicles are not touching each other.
4. Clamp the red jumper cable onto the auxiliary battery's positive (+) terminal (1).
CAUTION Connect the jump cable carefully to prevent
short circuits with other components in the
engine compartment.
5. Fold back the cover over your vehicle's posi-
tive (+) jump start terminal (2).
6.

Clamp the other end of the red jumper cable
to your vehicle's positive (+) jump start termi-
nal (2).
7. Clamp the black jumper cable onto the auxili- ary battery's negative (-) terminal (3).
8. Clamp the other end of the black jumper cable to your vehicle's negative (-) ground
point (4). 9. Make sure the jumper cables are securely
attached to help prevent sparks while jump
starting.
10. Start the engine of the assisting vehicle and let it run for a few minutes at a higher idling
speed than normal, about 1500 rpm.
11. Start your vehicle's engine. If the engine does not start, allow an additional 10
minutes of charging time and then try to start
the engine again.
NOTE When the engine is started under normal
conditions, the vehicle's electrical drive motor
is prioritized – the gasoline engine remains
off. This means that the electric motor has
"started" and the vehicle is ready to be driven
once the start knob has been turned clock-
wise. Start of the electric motor is indicated
by the indicator lights on the instrument panel
going out and its preselected theme illuminat-
ing.
CAUTION
Do not touch the connections between the
cable and the vehicle during the start attempt.
Risk of sparking.

||STARTING AND DRIVING
* Option/accessory.
482 12. Remove the jumper cables in the reverse
order ‒ first the black cables and then the
red cables.
Make sure that none of the clamps of the
black jumper cables come into contact with
either vehicle's positive (+) jump start termi-
nals or either of the red jumper cable's con-
nected clamps.
WARNING PROPOSITION 65 WARNING! Battery posts,
terminals, and related accessories contain
lead and lead compounds, chemicals known
to the state of California to cause cancer and
reproductive harm. Wash hands after han-
dling.
WARNING
Batteries generate hydrogen gas, which
is flammable and explosive.
Do not connect the jumper cable to any
part of the fuel system or to any moving
parts. Avoid touching hot manifolds.
Battery fluid contains sulfuric acid. Do not
allow battery fluid to contact eyes, skin,
fabrics or painted surfaces.
If contact occurs, flush the affected area
immediately with water. Obtain medical
help immediately if eyes are affected.
Never expose the battery to open flame
or electric spark. Do not smoke near the
battery. Failure to follow the instructions
for jump starting can lead to injury.
NOTE The vehicle cannot be started if the hybrid
battery is discharged.
Related information

Starting the vehicle (p. 434)
Ignition modes (p. 437)
Adjusting the steering wheel (p. 201)
Selecting ignition mode (p. 438) Detachable towbar*
Volvo recommends the use of Volvo towbars
that are specially designed for the vehicle.
NOTE The optional detachable trailer hitch may not
be available in all markets or on all models.
Consult your Volvo retailer.
Ball holder
Cotter pin
Towbar assembly
Locking bolt
Safety wire attachment bracket