2018 VOLVO XC90 TWIN ENGINE stop start

||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)

HYBRID INFORMATION
417
NOTEIf the instrument panel is not used, it will go
dark after a period of time. To reactivate the
display:
•
depress the brake pedal,
• open one of the doors, or
• put the ignition in mode I by turning the
START knob clockwise and then releas-
ing.
Related information
• Charging the hybrid battery (p. 407)
• Twin Engine symbols and messages in the
instrument panel (p. 419)
• Charging status in the vehicle's charging
socket (p. 414)
• Charging status in the charging cable's
charging module (p. 415)
• Stopping hybrid battery charging (p. 418)

||HYBRID INFORMATION
420
Symbol
Message MeaningHybrid system failure
Service required
The hybrid system is not functioning. Contact a workshop
A
to have the system checked as soon as
possible. Charge cable
Remove before start
Displayed when the driver attempts to start the vehicle with the chargin\
g cable still connected.
Remove the charging cable and close the charger cover.Charge cable
Removed? Turn and hold start knob
7s
Displayed when the driver again attempts to start the vehicle with the c\
harging cable connected.
Disconnect the charging cable or verify that the cable is completely dis\
connected and the charger
cover is closed.A
An authorized Volvo workshop is recommended.
Related information
• Initiating hybrid battery charging (p. 412)
• Stopping hybrid battery charging (p. 418)
• Charging the hybrid battery (p. 407)
• Warning symbols in the instrument panel
(p. 97)
• Indicator symbols in the instrument panel
(p. 94)
• Hybrid gauge (p. 87)
• Hybrid gauge (p. 88)

STARTING AND DRIVING
}}
429
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. 429)
• Parking brake (p. 432)
• Auto-hold brakes (p. 436)
• Braking assist after a collision (p. 437)
• Hill Start Assist (p. 437)
• City Safety™ (p. 335)
• Hill Descent Control (p. 454) 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
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.
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 can help prevent the
wheels from locking and help maintain steering
control when braking. Vibrations may be felt from
the brake pedal when ABS is operating, which is
normal.
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

STARTING AND DRIVING
431
Brake Assist System
The brake enhancing system, Brake Assist
System (BAS

), helps increase braking force and
thereby reduce braking distance. The system monitors the driver's braking habits
and increases braking force when necessary.
Braking force can be increased up to the point at
which the ABS intervenes. The function is deacti-
vated when pressure on the brake pedal is
decreased.
Related information
• Brakes (p. 429) Braking on wet roads
Prolonged driving in heavy rain without braking
may cause braking effect to be slightly delayed
the first time the brakes are applied.
This may also occur after washing the vehicle. It
will then be necessary to apply greater pressure
to the brake pedal. You should therefore maintain
a greater distance to the vehicle ahead.
Firmly apply the brakes after washing the vehicle
or driving on wet roads. This helps warm up the
brake discs, enabling them to dry more quickly
and protecting them against corrosion. Consider
the current traffic situation when braking.
Related information
• Brakes (p. 429)
• Braking on salted roads (p. 431) Braking on salted roads
When driving on salted roads, a layer of salt may
form on the brake discs and brake pads.
This could increase stopping distance. Maintain
an extra large safety distance to the vehicle
ahead. Make sure to also:
• Apply the brakes from time to time to help
remove salt. Make sure braking does not
pose a risk to any other road users.
• Gently apply the brakes when you have fin-
ished driving and before driving again.
Related information
•Brakes (p. 429)
• Braking on wet roads (p. 431)

STARTING AND DRIVING
432Maintenance of the brake system
Regularly check the brake system components
for wear. To keep the vehicle as safe and reliable as possi-
ble, follow the Volvo service schedule specified in
the Warranty and Maintenance Records Informa-
tion booklet. New and replaced brake pads and
brake discs do not provide optimal braking effect
until they are "broken in" by driving a few hun-
dred kilometers (miles). Compensate for the
reduced braking effect by applying greater pres-
sure to the brake pedal. Volvo recommends only
using brake pads approved for your Volvo.
CAUTION The brake system's components should be
regularly checked for wear.
Contact a workshop for advice on how to do
this or let a workshop perform the inspection
- an authorized Volvo workshop is recom-
mended.
Related information
•
Brakes (p. 429) Parking brake
The parking brake helps keep the vehicle sta-
tionary by mechanically locking two wheels.
The parking brake controls are located in the tunnel
console between the seats.
When the electric parking brake is being applied,
a faint sound can be heard from the brake's elec-
tric motor. This sound can also be heard during
the automatic function check of the parking
brake.
If the vehicle is stationary when the parking brake
is applied, it will only be applied to the rear
wheels. If it is applied while the vehicle is moving,
the normal brakes will be used on all four wheels.
Braking will be transferred to only the rear
wheels when the vehicle is almost stopped.
Related information
• Activating and deactivating the parking brake
(p. 433)
• Parking on a hill (p. 434)
• Parking brake malfunction (p. 435)
• Auto-hold brakes (p. 436)

STARTING AND DRIVING
436Auto-hold brakes
With the Auto-hold brake function, the driver can
release the brake pedal and the brakes will
remain applied, for example, when the vehicle
has stopped at a traffic light or intersection.
When the vehicle stops, the brakes are activated
automatically. The function can use either the
normal brakes or the parking brakes to keep the
vehicle stationary and works on flat surfaces or
hills. When driving off, the brakes will be automat-
ically released if the driver's seat belt is buckled.
NOTE When braking to a stop on an uphill or down-
hill gradient, depress the brake pedal with
slightly more force than usual before releas-
ing to ensure that the vehicle cannot move at
all.
The parking brake is activated if:
•
the vehicle is switched off
• the driver's door is opened
• the driver's seat belt is removed
• the vehicle has been stationary for a pro-
longed period of time (5-10 minutes)
Symbols in the instrument panel Symbol
Meaning This symbol illuminates when the
function is using the normal brakes
to keep the vehicle stationary.
A
B
This symbol illuminates when the
function is using the parking brake
to keep the vehicle stationary. A
Canadian models.
B US models.
Related information
• Activating and deactivating Auto-hold at a
standstill (p. 436)
• Brakes (p. 429)
• Parking brake (p. 432)
• Hill Start Assist (p. 437) Activating and deactivating Auto-
hold at a standstill
The Auto-hold brake function at a standstill is
activated with the button in the tunnel console.
–
Press the button in the tunnel console to
activate or deactivate the function.
>

The indicator light in the button will illumi-
nate when the function is activated. The
function will remain active the next time
the vehicle is started.