2019 VOLVO XC90 TWIN ENGINE ECO mode

STARTING AND DRIVING
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435
In some situations, such as in cold weather or if
the hybrid battery's charge level is too low, the
gasoline engine will start instead.
The vehicle should not be started with the charg-
ing cable connected. However, if the cable can-
not be pulled out or if the vehicle incorrectly
detects a cable that is not connected, the vehicle
can be started using an override procedure:
1.

Press the brake pedal and turn the start
knob clockwise.
2. Charge cable Remove before start will
appear in the instrument panel.
3.

Turn the start knob clockwise again.
4. Removed? Turn and hold start knob 7s
will appear. Turn the knob clockwise and hold
it for 7 seconds to start the vehicle. Location of the backup reader in the tunnel console. If the
Vehicle key not found message is shown
in the instrument panel at start, place the remote
key at the backup reader and then make a new
start attempt.
NOTE When the remote key is placed in the backup
reader, make sure that no other vehicle keys,
metal objects or electronic devices (e.g. cellu-
lar phones, tablets, laptops or chargers) are in
the backup reader. Multiple vehicle keys close
to each other in the backup reader can dis-
rupt their functionality.
If Vehicle start System check, wait is dis-
played in the instrument panel while attempting
to start the vehicle, wait until the message disap-
pears and try again to start the vehicle.
CAUTION If the engine has not responded after 3
attempts – wait for 3 minutes before starting
a new attempt. Starting capability increases if
the starter battery is given time to recover.
NOTE
The vehicle cannot be started if the hybrid
battery is discharged.
WARNING Never remove the remote control key from
the vehicle while driving.
WARNING

Always remove the remote key from the
passenger compartment when you leave
the vehicle and make sure the ignition is
in mode 0.
Always put the gear selector in P and
apply the parking brake before leaving
the vehicle. Never leave the vehicle unsu-
pervised while the engine is running.
Always open the garage door fully and
make sure that ventilation is very good
before starting the engine in a garage.
The exhaust fumes produced by the vehi-
cle contain carbon monoxide, which is
invisible and odorless but very toxic.
NOTE With a cold start, idling speed may be consid-
erably higher than normal for certain engine
types. This is done to get the emissions sys-
tem up to normal operating temperature as
quickly as possible, which minimizes exhaust
emissions and protects the environment.

STARTING AND DRIVING
* Option/accessory.437
Ignition modes
The vehicle's ignition can be put in various
modes (levels) to make different functions availa-
ble.
To enable the use of a limited number of func-
tions when the engine is not running, the ignition
can be put in one of three different levels: 0, I
and II. These levels are referred to as "ignition
modes" in the Owner's Manual.
The following table shows which functions are
available in each ignition mode: Mode
Functions
0 The odometer, clock and tem-
perature gauge are illuminated A
.
The power* seats can be
adjusted.
The power windows can be used.
The center display is activated
and can be used A
.
The infotainment system can be
used A
.
In this mode, the functions are availa-
ble for a limited time and then switch
off automatically.
I The panoramic roof, power win-
dows, 12-volt electrical socket in
the passenger compartment,
Bluetooth, navigation, phone,
blower and windshield wipers can
be used.
The power seats can be adjusted.
The 12-volt electrical socket* in
the cargo compartment can be
used.
Electrical current will be taken
from the battery in this ignition
mode. Mode
Functions
II The headlights illuminate.
Warning/indicator lights illumi-
nate for 5 seconds.
A number of other systems are
activated. However, seat and rear
window heating can only be acti-
vated when the engine is running.
This ignition mode uses a lot of
current from the battery and
should be avoided whenever pos-
sible! A
Also activated when the door is opened.
Related information
Starting the vehicle (p. 434)
Adjusting the steering wheel (p. 201)
Jump starting using another battery (p. 481)
Selecting ignition mode (p. 438)

STARTING AND DRIVING
438Selecting ignition mode
The vehicle's ignition can be put in various
modes (levels) to make different functions availa-
ble.
Selecting an ignition mode Start knob in the tunnel console.

Ignition mode 0 - Unlock the vehicle and
keep the remote key in the passenger com-
partment.
NOTE To set level I or II without engine start – do
not depress the brake pedal (or clutch pedal
for vehicles with manual transmission) when
selecting this ignition mode.
Ignition mode I - Turn the start knob clock-
wise and release it. The control will automati-
cally return to the original position.
Ignition mode II - Turn the start knob clock-
wise and hold it there for approx. 5 seconds.
Release the knob, which will automatically
return to its original position.
Back to ignition mode 0 - To return to igni-
tion mode 0 from mode I and II, turn the start
knob clockwise and release it. The control
will automatically return to the original posi-
tion.
Related information
Starting the vehicle (p. 434)
Switching off the vehicle (p. 436)
Ignition modes (p. 437)
Adjusting the steering wheel (p. 201)
Jump starting using another battery (p. 481) Brake functions
The vehicle's brakes are used to reduce speed
or prevent the vehicle from rolling.
In addition to the wheel brakes and parking
brakes, the vehicle is also equipped with a num-
ber of automatic brake assist functions. These
systems help the driver by e.g. keeping the vehi-
cle stationary when the brake pedal is not
depressed (e.g. at a traffic light or intersection),
when starting up a hill or when driving down a hill.
Depending on how the vehicle is equipped, the
following brake assist functions may be included:
Auto-hold brakes (Auto Hold)
Hill Start Assist (Hill Start Assist)
Braking assist after a collision
City Safety
Hill Descent Control (Hill Descent Control)
Related information
Brakes (p. 439)
Parking brake (p. 442)
Auto-hold brakes (p. 446)
Braking assist after a collision (p. 447)
Hill Start Assist (p. 447)
City Safety™ (p. 341)
Hill Descent Control (p. 466)

||STARTING AND DRIVING
* Option/accessory.
448
Related information
Rear Collision Warning (p. 354)
BLIS* (p. 355)
Brake functions (p. 438) Transmission
The transmission is part of the vehicle's driveline
(power transmission) between the engine and
the drive wheels. The function of the transmis-
sion is to change gears depending on speed
and power needs.
The vehicle has an 8-speed automatic transmis-
sion and an electric motor for rear-wheel drive.
The number of gears allows the engine's torque
and power band to be effectively utilized. Two of
the gears are overdrive gears that save fuel when
driving at a constant engine speed. The steering
wheel paddles* can be used to shift up or down
manually. The instrument panel shows the gear
currently in use.
CAUTION Check the operating temperature of the
transmission to help avoid damage to any of
the drive system components. If there is a risk
of overheating, a warning symbol will appear
in the instrument panel and a text message
will be displayed. Follow the recommenda-
tions given.
Symbols in the instrument panelIf a problem should occur with the transmission, a
symbol and a message will appear in the instru-
ment panel. Symbol
Meaning Information and messages related
to the transmission. Follow the rec-
ommendations provided.
Hot or overheated transmission.
Follow the recommendations provi-
ded.
Reduced performance/Acceler-
ation performance reduced
In the event of a temporary fault in
the driveline, the vehicle may go
into a "limp home" mode with
reduced power output to help avoid
damage to the driveline.
Related information
Gear selector positions for automatic trans-
missions (p. 449)

||STARTING AND DRIVING
* Option/accessory.
450 Help functions
The system will automatically shift to P:
if the ignition is switched off while D or R is
selected.
if the driver unbuckles the seat belt and
opens the driver's door while the vehicle is
running with the gear selector in a gear other
than P.
To park a vehicle with an unbuckled seat belt and
open door – end P mode by shifting to R or D
again.
The system will not automatically shift to P if the
ignition is switched off while the gear selector is
in the neutral position (N). This is to make it pos-
sible to wash the vehicle in an automatic car
wash in which the vehicle is pulled forward on
rolling wheels.
Reverse - R
Select R when backing up. The vehicle must be
stationary when Reverse is selected.
Neutral - N
No gear is selected and the engine can be
started. Apply the parking brake if the vehicle is
stationary with the gear selector in N.
To move the gear selector from Neutral to
another gear, the brake pedal must be depressed
and the ignition in mode II.
D drive mode
D is the normal driving gear position. The trans-
mission shifts up or down automatically depend- ing on acceleration and speed. The vehicle must
be stationary when the gear selector is moved
from R to D.
Brake - B
B can be selected at any time during a drive. In B
mode, the engine braking function is activated
when the accelerator pedal is released, which
helps charge the hybrid battery. This offers addi-
tional opportunities to recharge the hybrid bat-
tery, since the battery is charged even when the
brake pedal is not depressed. B mode in the instrument panel.
From B mode, it is possible to manually shift to
lower gears. The currently selected gear (1-8) will
be displayed in the instrument panel.
Pull the gear selector backward once to shift
down one gear.
Pull the gear selector backward again to shift
down to lower gears. To shift manually to a higher gear, the vehicle
must be equipped with steering wheel paddles*.
Push the gear selector forward to return to D
mode.
For smooth shifting and engine performance, the
transmission will shift down automatically if the
vehicle's speed becomes too low for the selected
gear.
Related information
Shiftlock (p. 452)
Using the steering wheel paddles* to shift
(p. 451)
The kickdown function (p. 452)

STARTING AND DRIVING
452Shiftlock
The automatic transmission's shiftlock function
helps prevent inadvertently moving the gear
selector between different positions.
Automatic shiftlockThe automatic shiftlock has a separate safety
system.
From Park - P
To move to another gear from P (Park), the brake
pedal must be depressed and the ignition in
mode II.
From Neutral - N
If the gear selector is in N and the vehicle has
been stationary for at least 3 seconds (with or
without the engine running), the gear selector will
be locked in that position.
To move the gear selector from N to another
gear, the brake pedal must be depressed and the
ignition in mode II.
Messages in the instrument panelIf the gear selector is locked in position, a mes-
sage will appear in the instrument panel, e.g.
Gear lever Press brake pedal to activate
gear lever.
There is no mechanical shiftlock function.
Related information
Gear selector positions for automatic trans-
missions (p. 449) The kickdown function
Kickdown is used when maximum acceleration is
needed, e.g. when passing.
When the accelerator pedal is depressed all the
way to the floor (past the normal full accelerator
position), the transmission will automatically
engage kickdown, i.e. immediately shift down to a
lower gear.
If the accelerator pedal is released from the kick-
down position, the transmission will automatically
shift up again.
Safety function
The transmission control module is equipped with
a downshift protection feature to help prevent the
engine from overheating.
In some conditions, the transmission will prevent
downshifting/kickdown if this would lead to such
high engine speed (rpm) that the engine could
be damaged. If the driver still attempts downshift-
ing or kickdown at a high rpm, nothing will hap-
pen and the original gear will remain selected.
With kickdown, the vehicle can downshift one or
more steps at a time depending on the engine
speed. The vehicle upshifts when the engine rea-
ches its maximum rpm to prevent engine dam-
age.
Related information
Gear selector positions for automatic trans-
missions (p. 449) All Wheel Drive (AWD)
All-wheel drive, All Wheel Drive (AWD), also
called four-wheel drive, means that power is dis-
tributed to all four wheels, which improves trac-
tion.
The electric motor that powers the rear wheels
enables electronic all-wheel drive functionality.
All-wheel drive reacts differently depending on
which drive mode is selected.
Related information
Drive modes (p. 454)
Low Speed Control (p. 464)
Transmission (p. 448)

STARTING AND DRIVING
453
Drive systems
Volvo Twin Engine combines a combustion
engine for the front wheels and an electric motor
for the rear wheels.
Two drive systemsDepending on the selected drive mode and
power available in the electric motor, the drive
systems can either be used separately or in tan-
dem.
The electric motor gets its energy from a hybrid
battery located under the tunnel console. The
hybrid can be charged from a wall outlet or in a
special charging station. The combustion engine
can also charge the hybrid battery using a special
high-voltage generator.
Both the combustion engine and the electric
motor can generate power directly to the wheels.
An advanced control system coordinates both the
drive systems to help optimize driving economy. Hybrid battery - The hybrid battery's function
is to store electrical current. This energy is
provided by plugging the charging cable into
an electrical outlet, through regenerative
braking or from the high-voltage generator.
This provides current to power the electric
motor and to temporarily power the electrical
air conditioning to precondition the passen-
ger compartment.
Combustion engine - The combustion engine
starts when the charge level in the hybrid
battery is too low to provide the power output
requested by the driver.
High-voltage generator
2
- Charges the hybrid
battery. Starter for the combustion engine. Can provide the combustion engine with
extra electrical current. Electric motor - Powers the vehicle using
electricity. Can provide extra torque and
power during acceleration. Provides electrical
all-wheel drive functionality. Regenerates
braking energy into electrical current.
Related information

General information about Twin Engine
(p. 416)
Starting and stopping the combustion engine
in Twin Engine vehicles (p. 454)
Drive modes (p. 454)
Transmission (p. 448)
Factors affecting electric motor range
(p. 469) 2
CISG (Crank Integrated Starter Generator) - Combined high-voltage gene\
rator and starter.

STARTING AND DRIVING
* Option/accessory.
454 Starting and stopping the
combustion engine in Twin Engine
vehicles
An advanced control system determines the dis-
tance that the vehicle can be driven on the com-
bustion engine, electric motor, or both at the
same time. When driving on only the electric
motor, the vehicle may automatically start the
combustion engine due to outside circumstan-
ces, e.g. low ambient temperatures. This is com-
pletely normal. The combustion engine will also
always start when the hybrid battery is nearly
fully discharged.
Climate settings at low temperaturesAt low ambient temperatures, the combustion
engine will sometimes start automatically to help
achieve the desired passenger compartment
temperature and air quality. The amount of time
the combustion engine is running can be affec-
ted by:
lowering the temperature
reducing blower speed
activating Pure drive mode.
Using the electric motor in hot or cold
weather
At very low or high ambient temperatures, the
electric motor's driving range and power may be
reduced and affect how often the combustion
engine automatically starts.
Emission control systemTo help ensure that the emission control system
functions optimally, the combustion engine will
run for several minutes after it is started. The
amount of time the combustion engine needs to
be used varies depending on the temperature of
the three-way catalytic converter.
WARNING California Proposition 65
Operating, servicing and maintaining a pas-
senger vehicle can expose you to chemicals
including engine exhaust, carbon monoxide,
phthalates, and lead, which are known to the
State of California to cause cancer and birth
defects or other reproductive harm. To mini-
mize exposure, avoid breathing exhaust, do
not idle the engine except as necessary, serv-
ice your vehicle in a well ventilated area and
wear gloves or wash your hands frequently
when servicing your vehicle. For more infor-
mation go to www.P65Warnings.ca.gov/
passenger-vehicle.
Related information

Drive systems (p. 453)
Economical driving (p. 467)
Using the electric motor only (p. 469)
Drive modes (p. 454) Drive modes
Drive modes affect the vehicle's driving charac-
teristics in different ways to enhance and sim-
plify the driving experience in certain types of sit-
uations.
Drive modes enable easy access to the vehicle's
many functions and settings in different driving
situations. The following systems are adapted to
help optimize driving characteristics in each drive
mode:
Steering
Engine/transmission/all-wheel drive
Brakes
Pneumatic suspension* and shock absorbers
Instrument panel
Climate control settings
Select the drive mode that is best suited to the
current driving conditions. Keep in mind that not
all drive modes are available in all situations.