warning light VOLVO XC90 TWIN ENGINE 2019 Repair Manual

HYBRID INFORMATION
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419
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.
FuseThere 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. 419)
Charging status in the instrument panel
(p. 427)
Charging status in the vehicle's charging
socket (p. 425)
Starting and stopping preconditioning
(p. 233)
Stopping hybrid battery charging (p. 429) Charge cable
The charging cable is used to recharge your
vehicle's hybrid battery.
The charging cable is stored in a storage compartment
under the cargo compartment floor.
WARNING
Only use the charging cable provided with
your vehicle or a replacement cable pur-
chased from a Volvo retailer.
Specifications, charging cable
Compliance

SAE J1772
Ambient tempera-
ture -32 ºC to 50 ºC (-25 º
F
till 122 ºF)

||HYBRID INFORMATION
420
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 – an 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.
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 Power strips, extension cords, surge protec-
tors or similar devices must not be used
together with the charging cable since this
may involve a risk of fire, electric shocks, etc.
An adapter may not be used between the
120/240 V outlet (AC, alternating current)
and the charging cable.
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.
CAUTION Wipe the charging cable with a clean cloth
lightly moistened with water or a mild deter-
gent. Do not use chemicals or solvents.
The charging cable and its components must
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

HYBRID INFORMATION
421240 V adapter clip
240 V adapter
Charge coupler
Release button
Related information

Charging cable residual current device
(p. 421)
Charging cable temperature monitoring
(p. 422)
Charging the hybrid battery (p. 417)
Charging status in the charging cable's
charging module (p. 425) Charging cable residual current
device
The charging cable has a circuit breaker that
helps protect against current overloads and ther-
mal overheating.
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.
WARNING
The charging cable's residual current
breaker helps protect the vehicle's charg-
ing system but cannot ensure that an cur-
rent overload will never occur.
Never use visibly worn or damaged elec-
trical sockets. Doing so could lead to fires
or serious injury.
Never connect the charging cable to an
extension cord.
Maintenance or replacement of the hybrid
battery may only be performed by a
trained and qualified Volvo service techni-
cian.
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.
Related information
Charge cable (p. 419)
Charging status in the charging cable's
charging module (p. 425)

HYBRID INFORMATION
}}
423
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 – an 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.
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.

HYBRID INFORMATION
}}
425
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. 417)
Charging status in the instrument panel
(p. 427)
Charging status in the charging cable's
charging module (p. 425)
Stopping hybrid battery charging (p. 429) 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.

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
}}
439
Brakes
The brake pedal is used to apply the vehicle's
regular brakes, which are part of the brake sys-
tem.
The vehicle is equipped with two brake circuits. If
one brake circuit is damaged, the brake pedal will
go down further when depressed. More pressure
will then be required from the driver for normal
braking effect.
WARNING
The power brakes only work when the electric
motor or combustion engine is running.
If the brake pedal is used when the engine is
switched off, greater pressure must be applied to
brake the vehicle.
In very hilly areas or when driving with a heavy
load, gear position B can be used to augment the
brakes with engine braking.
Use the Off Road drive mode to increase the
engine braking effect when driving on steep
downgrades at low speeds.
Anti-lock brakesThe vehicle is equipped with an Anti-lock Braking
System (ABS), which helps prevent the wheels
from locking and helps maintain steering control
when braking. Vibrations may be felt from the brake pedal when ABS is operating, which is nor-
mal.
After the vehicle is started, a brief test of the
ABS system is automatically performed when the
driver releases the brake pedal. An additional
automatic test of the system may be performed
when the vehicle is traveling at a low speed. Dur-
ing the test, the brake pedal may feel as though it
is pulsating.
Light braking charges the hybrid batteryWhen the brakes are applied lightly, the electric
motor braking function is used. This converts the
vehicle's kinetic energy into electrical energy,
which is used to charge the hybrid battery. When
the battery is being charged with the electric
motor braking function, this will be indicated in
the instrument panel.
When the battery is being charged with the electric
motor braking function, this will be indicated in the
instrument panel.
This function is active at speeds in the range of
150-5 km/h (93-3 mph). When braking at
speeds outside of this range, or during harder
braking, the hydraulic braking system is used to
augment braking. This is indicated in the instru-
ment panel with the pointer down in the red area.

||STARTING AND DRIVING
440
Symbols in the instrument panel
Symbol
Meaning A
B
Check the brake fluid level. If the
level is low, fill brake fluid and
check to determine the reason for
the loss of brake fluid. A
B
Fault in pedal sensor. Symbol
Meaning A
B
Steady glow for 2 seconds after
the engine is started: Automatic
function check.
Steady glow for more than 2 sec-
onds: Fault in the ABS system. The
vehicle's regular brake system is
still working, but without the ABS
function. If the message Brake pedal Cha-
racteristics changed Service
required is displayed, the "Brake-
by-wire" system is not functioning
properly. Greater pressure will be
required to brake the vehicle. A
In Canada.
B In the US.WARNING If the warning symbols for both brake fault
and ABS fault are lit simultaneously, there
may be a fault in the brake system.
If the brake fluid reservoir level is normal
when this occurs, drive carefully to the
nearest workshop to have the brake sys-
tem checked - an authorized Volvo work-
shop is recommended.
If the brake fluid has fallen below the MIN
level in the brake fluid reservoir, the vehi-
cle should not be driven until the brake
fluid has been filled. The reason for the
brake fluid loss must be checked.
Related information
Brake Assist System (p. 441)
Auto-hold brakes (p. 446)
Hill Start Assist (p. 447)
Braking on wet roads (p. 441)
Braking on salted roads (p. 441)
Maintenance of the brake system (p. 442)
Brake lights (p. 160)

STARTING AND DRIVING
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447
When shutting off
If the function is active and holding the
vehicle stationary using the normal
brakes (A symbol lit), the brake pedal
must be depressed while pressing the
button in order to deactivate Auto-hold.
The function will remain off until it is reactiva-
ted.
When Auto-hold is switched off, Hill Start
Assist (HSA) will remain active to help pre-
vent the vehicle from rolling backward when
starting up a hill.
Related information
Auto-hold brakes (p. 446) Hill Start Assist
The function for assisting when starting the vehi-
cle on inclines, Hill Start Assist (HSA), helps
prevent the vehicle from rolling backward when
starting on an uphill gradient. When backing up
a hill, HSA helps prevent the vehicle from rolling
forward.
The function retains pressure from the brake
pedal in the brake system for several seconds
after the brake pedal has been released.
This temporary braking effect is released after a
few seconds or when the driver begins driving.
Hill Start Assist is available even if the Auto-hold
brake function is switched off.
Related information
Auto-hold brakes (p. 446)
Brakes (p. 439) Braking assist after a collision
In a collision in which the activation level is
reached for the pyrotechnic seat belt tensioners
or airbags, or if a collision with a large animal is
detected, the vehicle's brakes will be automati-
cally activated. This function is intended to help
prevent or reduce the effects of any subsequent
collision.
After a serious collision, it may no longer be pos-
sible to control and steer the vehicle. In order to
avoid or mitigate a possible further collision with
a vehicle or an object in the vehicle's path, the
brake assist system is activated automatically to
help stop the vehicle safely.
The brake lights and hazard warning flashers are
activated during braking. When the vehicle has
stopped, the hazard warning flashers will con-
tinue to flash and the parking brake will be
applied.
If braking is not appropriate, e.g. if there is a risk
of being hit by passing traffic, the driver can over-
ride the system by depressing the accelerator
pedal.
This function assumes that the brake system is
intact after a collision.
Brake assist is part of the Rear Collision Warning
and Blind Spot Information safety systems.

STARTING AND DRIVING
}}
455
Available drive modes
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 particularly true at low speeds, e.g. in
parking lots.
WARNING
Do not leave the vehicle in an unventilated
area with a drive mode activated and the com-
bustion engine switched off. The engine will
start automatically if the charge level in the
hybrid battery is low and the resulting exhaust
gases can be very harmful to people and ani-
mals.
HYBRID

This is the default mode in which the electric
motor and combustion engine work together.
The vehicle starts in Hybrid mode. The control
system uses both the electric motor and the gas-
oline engine - separately or in tandem - and cal-
culates optimal utilization with regard to perform-
ance, fuel consumption and comfort. At high
speeds, ground clearance is automatically low-
ered 3
to reduce air resistance. Driving capacity on
the electric motor alone is determined by factors such as the hybrid battery's charge level, the
need for heat/cooling in the passenger compart-
ment, etc.
If there is sufficient charge in the battery, it is
possible to drive solely on electric power. When
the accelerator pedal is pressed, only the electric
motor will be activated until the battery reaches a
certain charge level. Above this level, the current
in the battery cannot supply the power requested
by the accelerator pedal and the combustion
engine will start.
When the hybrid battery's charge level is low, the
combustion engine will start more frequently to
save the remaining current in the battery. Charge
the hybrid battery from a 120-240 volt outlet
using a charging cable, or activate
Charge in
Function view to reset the option of only using
the electric motor.
This drive mode is designed for low energy con-
sumption with an optimized mix between the
electric motor and gasoline engine, without com-
promising on climate comfort or driving experi-
ence. When faster acceleration is requested by
the driver, the electric driveline will be utilized to
help provide maximum additional power. The
vehicle also monitors the driving conditions and
automatically engages all-wheel drive if neces-
sary. All-wheel drive and extra electric power are
always available regardless of the battery's
charging status.
Information in the instrument panel
When driving in Hybrid mode, a hybrid gauge will
be displayed in the instrument panel. The gauge
will indicate the amount of electrical current
required when the driver depresses the accelera-
tor pedal. The marker between the lightning and
the drop shows how much current is available. The instrument panel gauge when both the electric
motor and the combustion engine are being used.
The instrument panel also shows how
much current is being restored to the
battery (regenerated) during light brak-
ing. 3
For vehicles with pneumatic suspension.