2018 VOLVO XC90 TWIN ENGINE light

HYBRID INFORMATION
406General information about Twin
Engine
Twin Engine vehicles are driven just like any
other vehicle, but certain functions differ from a
vehicle powered exclusively by gasoline. The
electric motor powers the vehicle primarily at low
speeds; the gasoline engine is used at higher
speeds or during more active driving. The instrument panel displays Twin Engine-spe-
cific information - charging information, selected
drive mode, distance to discharged battery and
hybrid battery charge level.
Different drive modes can be selected while driv-
ing, e.g. electric power only or, if more power is
needed, a combination of electric and gasoline
power. The vehicle calculates the optimal combi-
nation of driveability, driving experience, environ-
mental impact and fuel economy for the selected
drive mode.
In order to function optimally, the hybrid battery
(and its electrical drive systems) and the gasoline
engine (and its drive systems) must be at the
correct operating temperature. Battery capacity
can be considerably reduced if the battery is too
cold or too hot. Preconditioning prepares the
vehicle's drive systems and passenger compart-
ment before driving to help reduce both wear and
energy consumption. It also helps increase the
hybrid battery's range.
The hybrid battery, which powers the electric
motor, is recharged using the charging cable. It
can also be recharged during light braking and through engine braking in gear position B. The
combustion engine can also help recharge the
hybrid battery.
Important
No electrical current
Keep in mind that if there is no electrical current
to the vehicle, i.e. the ignition is switched off or
the start battery is discharged, certain functions
such as brakes, power steering, etc. will not work.
WARNING If the vehicle does not have electrical current
and both the electric motor and the gasoline
engine are switched off, the brakes cannot be
used to stop the vehicle.
Towing not permitted
Never tow a Twin Engine vehicle behind another
vehicle, as this could damage the electric motor.
Exterior engine noise
WARNING
Keep in mind that the vehicle does not emit
any engine noise when using the electric
motor and may therefore be difficult to detect
for children, pedestrians, cyclists or animals.
This is especially true at low speeds, e.g. in
parking lots.
High-voltage electrical current
WARNING Several components in the vehicle work with
high voltage that can be hazardous in case of
an incorrect procedure. These components
and any orange wiring in the vehicle may only
be handled by trained and qualified Volvo
service technicians.
Do not touch anything that is not clearly descri-
bed in this Owner's Manual.
Related information
• Charging the hybrid battery (p. 407)
• Hybrid gauge (p. 87)
• Drive modes (p. 445)
• Starting and stopping preconditioning
(p. 231)
• Hybrid battery (p. 619)
• Factors affecting electric motor range
(p. 458)
• Gear selector positions for automatic trans-
missions (p. 439)
• Towing using a towline (p. 476)

HYBRID INFORMATION
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407
Charging the hybrid battery
In addition to the conventional fuel tank, your
vehicle is also equipped with a rechargeable
lithium-ion hybrid battery.
The hybrid battery can be recharged using the
charging cable stored in a storage space in the
cargo compartment.
WARNING
The hybrid electrical system in your vehicle
uses high voltage electrical current. Any dam-
age to this system or to the hybrid battery
may result in the danger of overheating, fire,
or serious injury. If the vehicle is involved in a
collision or subjected to flooding, fire, etc.,
have it inspected by a trained and qualified
Volvo service technician. Prior to this inspec-
tion, the vehicle should be parked outdoors at
a safe distance from any building or poten-
tially flammable materials.
The hybrid battery's charging time depends on
the charging current used.
NOTE The capacity of the hybrid battery diminishes
somewhat with age and use, which could
result in increased use of the gasoline engine
and consequently, slightly higher fuel con-
sumption.
WARNING If the hybrid battery needs to be replaced, this
may only be done by Volvo retailer or author-
ized Volvo workshop.
Charging cable handle and charging socket.
Charging status is indicated in three ways:
• The indicator lights in the charging module
(the unit connected to the wall outlet).
• Indicator light in the vehicle's charging
socket.
• Images and text in the instrument panel.
The hybrid battery's charging process also
charges the vehicle's start battery.
If the hybrid battery's temperature is below
-10 ºC (14 ºF) or above 40 ºC (104 ºF), some of
the vehicle's functions may be reduced or not
available at all. The electric motor cannot be used if the battery's
temperature is too low or too high. If the PURE
drive mode is selected, the gasoline engine will
start.
Charging using the gasoline engine
The vehicle generates electrical current to charge the
battery, e.g. when the driver lightly presses the brake
pedal or when engine braking is used on downgrades.
The vehicle can also generate current to the
hybrid battery to charge it.
• The hybrid battery can also be recharged by
lightly depressing the brake pedal, i.e. during
light braking. This converts the vehicle's
kinetic energy to electrical energy, which is
used to charge the hybrid battery.
• In gear position B, the electric motor brakes
the vehicle when the accelerator pedal is

||HYBRID INFORMATION
408
released and the hybrid battery is recharged
at the same time.
• The combustion engine can also help
recharge the hybrid battery.
Related information
•Charge cable (p. 409)
• Charging current (p. 408)
• Opening and closing the charging socket
cover (p. 411)
• Initiating hybrid battery charging (p. 412)
• Stopping hybrid battery charging (p. 418)
• Charging status in the charging cable's
charging module (p. 415)
• Charging status in the vehicle's charging
socket (p. 414)
• Charging status in the instrument panel
(p. 416)
• Twin Engine symbols and messages in the
instrument panel (p. 419)
• Gear selector positions for automatic trans-
missions (p. 439)
• Changing drive mode (p. 449)
• Long-term storage of vehicles with hybrid
batteries (p. 421) Charging current
Charging current is used to charge the hybrid
battery and precondition the vehicle. Charging is
performed by connecting a charging cable
between the vehicle's charging socket and a
120/240 V electrical socket (alternating cur-
rent).
When the charging cable is activated, a message
will be displayed in the instrument panel and an
indicator light in the vehicle's charging socket will
illuminate. Charging current is primarily used for
battery charging, but is also used for precondi-
tioning. The vehicle's start battery is charged
along with the hybrid battery.
CAUTION
Never detach the charging cable from the
120/240 V outlet (AC, alternating current)
while charging is in progress – the
120/240 V outlet could be damaged in such
circumstances. Always interrupt charging first
and then disconnect the charging cable – first
from the vehicle's charging socket and then
from the 120/240 V outlet.
NOTE •
In extremely cold or hot weather, part of
the charging current is used to heat/cool
the hybrid battery and the passenger
compartment, resulting in a longer charg-
ing time.
• The charging time is longer if precondi-
tioning has been selected. The time
required depends primarily on the ambi-
ent temperature. There are normally several 120/240 V power
consumers in one fuse circuit, which means that
more than one power consumer (e.g. lighting,
vacuum cleaner, electric drill, etc.) may use the
same fuse.
Related information
•
Charge cable (p. 409)
• Charging status in the instrument panel
(p. 416)
• Charging status in the vehicle's charging
socket (p. 414)
• Starting and stopping preconditioning
(p. 231)
• Stopping hybrid battery charging (p. 418)

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410
CAUTION
Wipe the charging cable with a clean cloth
lightly moistened with water or a mild deter-
gent. Do not use chemicals or solvents. Do
not submerge the charging cable.
The charging cable and its components
should not be rinsed or immersed in water.
CAUTION
Avoid exposing the charging module and its
plug to direct sunlight. In such cases, the
overheating protection in the plug could
reduce or cut off charging of the hybrid bat-
tery.
Charging cable components
Charge module 240 V adapter clip
240 V adapter
Charge coupler
Release button
Related information
•
Charging cable residual current device
(p. 410)
• Charging cable temperature monitoring
(p. 411)
• Charging the hybrid battery (p. 407)
• Charging status in the charging cable's
charging module (p. 415) Charging cable residual current
device
The charging cable has a circuit breaker that
helps protect against current overloads and ther-
mal overheating.
If the charging cable's residual current device is
triggered, the blue indicator light in the charging
module will not illuminate when the charging
cable is plugged into an electrical outlet (or the
red warning light will glow steadily). Have the out-
let checked by a licensed electrician or try using
another wall outlet.
WARNING Charging the hybrid battery may only be done
from approved, grounded 120-/240 V outlets
(AC, alternating current). If the electrical cir-
cuit or electrical socket's capacity is not
known, let a licensed electrician inspect the
electrical circuit's capacity. Using a charge
level that exceeds the electrical circuit's or
electrical outlet's capacity may start a fire or
damage the electrical circuit.

||HYBRID INFORMATION
412
CAUTION
Make sure the charging socket's protective
cover is positioned so it does not damage the
paint (in e.g., windy conditions).
Perform the following steps in reverse to close
the charger door.
NOTE
Since the hatch is locked during driving, the
vehicle must be unlocked again to be able to
open the hatch.
Related information
•
Initiating hybrid battery charging (p. 412)
• Stopping hybrid battery charging (p. 418)
• Charging the hybrid battery (p. 407) Initiating hybrid battery charging
The hybrid battery is charged by connecting a
charging cable between the vehicle and a
120/240 V outlet (alternating current).
Only use the charging cable supplied with the
car or a replacement cable recommended by
Volvo.
CAUTION Never connect the charging cable if there is a
risk of a thunderstorm or there is lightning.
WARNING •
The charging cable must be grounded
when in use. It is equipped with a cord
with a grounding conductor and a
grounding plug. The plug must be
inserted into an appropriate outlet that is
properly installed and grounded in
accordance with all local codes and ordi-
nances and is not damaged in any way.
• Children should be supervised when in
the vicinity of the charging cable when it
is plugged in.
• High voltage is present in your electric
meter housing and power distribution
service panel. Contact with high voltage
can cause death or serious personal
injury.
• Do not use the charging cable if it is
damaged in any way. A damaged or mal-
functioning charging cable may only be
repaired by a workshop – a authorized
Volvo workshop is recommended.
• Always position the charging cable so
that it will not be driven over, stepped on,
tripped over or otherwise damaged, or
cause personal injury.

HYBRID INFORMATION
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413 •
Disconnect the charger from the wall out-
let before cleaning it.
• Never connect the charging cable to an
extension cord or a multiple plug socket.
Also, refer to the manufacturer's instructions
for using the charging cable and its compo-
nents.
CAUTION Make sure that the 120/240 V outlet (AC,
alternating current) has a power capacity suf-
ficient for charging electric vehicles. If you are
uncertain of the capacity, have the outlet
checked by a licensed electrician.
Take out the charging cable from the storage
compartment under the cargo area. Note that the
ignition must be switched off completely before
charging. Plug the charging cable into a 120/240 V
outlet. Never use an extension cord.
Open the charger door and remove the
charging socket's protective cover. Push the
charging handle all the way into the vehicle's
socket.3.

The charging cable handle will lock into
place and charging will begin within
5 seconds. When charging starts, the green
LED light in the charging socket will begin to
flash. The approximate remaining charging
time or the charging status will be displayed
in the instrument panel.
Charging may be temporarily interrupted if
the vehicle is unlocked:
• and a door is open ‒ charging will restart
within a few minutes.
• if no door is opened ‒ the vehicle will
automatically relock. Charging will resume
after 1 minute.
CAUTION Never detach the charging cable from the
120/240 V outlet (AC, alternating current)
while charging is in progress – the
120/240 V outlet could be damaged in such
circumstances. Always interrupt charging first
and then disconnect the charging cable – first
from the vehicle's charging socket and then
from the 120/240 V outlet.
During charging, condensation from the air con-
ditioning may form under the vehicle. This is nor-
mal and is caused by the hybrid battery cooling.

||HYBRID INFORMATION
414
Related information
•
Charging the hybrid battery (p. 407)
• Opening and closing the charging socket
cover (p. 411)
• Charging status in the vehicle's charging
socket (p. 414)
• Charging status in the instrument panel
(p. 416)
• Charging status in the charging cable's
charging module (p. 415)
• Stopping hybrid battery charging (p. 418) Charging status in the vehicle's
charging socket
The charging status is indicated by an LED light
in the charging socket. Location of the LED indicator light in the vehicle's
charging socket.
The LED indicator light shows the current charge
status during charging. If the LED indicator light
is not illuminated, check to make sure the cable
is securely connected in the wall outlet and in the
outlet in the vehicle. A white, red or yellow light
illuminates when the passenger compartment
lighting is activated and will remain illuminated for
a short time after the passenger compartment
lighting has gone out. LED indicator
light's color
Meaning
White
Courtesy light.
Yellow Wait modeA
– waiting for
charging to start.
Flashing green Charging is in progress B
.
Green Charging completed C
.
Red Malfunction. A
E.g. after a door has been opened or if the charging cable han-
dle is not locked in place.
B The more slowly the light flashes, the closer the battery is to
being fully charged.
C The light will go out after a short time.
Related information
• Charging the hybrid battery (p. 407)
• Charging status in the instrument panel
(p. 416)
• Charging status in the charging cable's
charging module (p. 415)
• Stopping hybrid battery charging (p. 418)

HYBRID INFORMATION
415
Charging status in the charging
cable's charging module
The red and blue lights in the charging module
indicate the status of ongoing and completed
charging. Charge module: 1. Red warning light, 2. Blue status indi-
cator
When the charge module is initially plugged into
a wall outlet, the red warning light will flash once
to indicate that a startup safety check has been
performed. When the safety check has been
completed, the blue status indicator will glow
steadily and the red warning light will be off. The
charger is now ready to be used. If the red warn-
ing light continues to flash or glows steadily, a
fault has been detected and the charger will not
deliver power to the vehicle. Contact a Volvo
retailer or a certified Volvo service technician. When the charging cable is connected to the
vehicle's charging socket, the blue light will flash
once.
Charging cable connected to the vehicle's charg-
ing socket: Indicator
light's color
Meaning
Flashing
blue Charging is in progress. The
light flashes about once every
other second.
Solid blue

Charging completed. This will
also be indicated in the instru-
ment panel
Related information
• Charging the hybrid battery (p. 407)
• Charging status in the vehicle's charging
socket (p. 414)
• Charging status in the instrument panel
(p. 416)
• Stopping hybrid battery charging (p. 418)