brake light VOLVO XC90 TWIN ENGINE 2019 Owner's Guide

DRIVER SUPPORT
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391
Park Assist front, rear and sides
Park Assist has different parameters depending
on which part of the vehicle is approaching an
obstacle.
Front camera Continuous tone warning signal when the obstacle is
less than approx. 30 cm (1 ft) from the vehicle
112
.
Park Assist's front sensors are automatically acti-
vated when the engine is started. They are active
at speeds below 10 km/h (6 mph).
The distance monitored extends approx. 80 cm
(2.5 ft) in front of the vehicle.
NOTE The Parking Assist system is deactivated
when the parking brake is applied or when P
is selected on vehicles with automatic trans-
mission.
CAUTION
When installing auxiliary lights: Make sure
these do not obscure the sensors – the auxili-
ary lights could be perceived as an obstacle.
Back
Continuous tone warning signal when the obstacle is
less than approx. 30 cm (1 ft) from the vehicle
112The rear sensors will be activated if the vehicle
begins rolling backward or if reverse gear is
engaged.
The distance monitored extends
approx. 1.5 meters (5 ft) behind the vehicle.
The Parking Assist system's rear sensors will be
automatically deactivated if the vehicle is backing
up with a trailer connected to the vehicle's elec-
trical system.
NOTE
When reversing with e.g. a trailer or bike car-
rier on the trailer hitch – without Volvo original
trailer cables – the Parking Assist system may
have to be turned off manually to prevent the
sensors from reacting to these.
112
The illustration is generic - details may vary according to vehicle mode\
l.

HYBRID INFORMATION
416General 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
Please be aware that there is no sound from
the engine when the vehicle is being powered
by the electric motor and it may be difficult to
detect by children, pedestrians, cyclists and
animals. This is especially true at low speeds.
High-voltage electrical current
WARNING A number of electrical components in Twin
Engine Plug-in Hybrid vehicles use high-volt-
age current and can be extremely dangerous
if handled incorrectly. 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. 417)
Hybrid gauge (p. 87)
Drive modes (p. 454)
Starting and stopping preconditioning
(p. 233)
Hybrid battery (p. 631)
Factors affecting electric motor range
(p. 469)

||HYBRID INFORMATION
418
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 start battery is charged while the hybrid bat-
tery is charging and stops charging when the
hybrid battery is fully charged.
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
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. 419)
Charging current (p. 419)
Opening and closing the charging socket
cover (p. 422)
Initiating hybrid battery charging (p. 423)
Stopping hybrid battery charging (p. 429)
Charging status in the charging cable's
charging module (p. 425)
Charging status in the vehicle's charging
socket (p. 425)
Charging status in the instrument panel
(p. 427)
Twin Engine symbols and messages in the
instrument panel (p. 430)
Gear selector positions for automatic trans-
missions (p. 449)
Changing drive mode (p. 459)
Long-term storage of vehicles with hybrid
batteries (p. 432)

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
}}
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
441
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. 439) 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. 439)
Braking on salted roads (p. 441) 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. 439)
Braking on wet roads (p. 441)

STARTING AND DRIVING
446Auto-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. 446)
Brakes (p. 439)
Parking brake (p. 442)
Hill Start Assist (p. 447) 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.

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
* Option/accessory.
464 Leveling control settings*
Turn off leveling control before lifting the vehicle
with a jack to help avoid problems with the
pneumatic suspension.
The vehicle can be lowered or raised to make it
easier to load or for passengers to get in and
out.
Adjusting loading mode Use the buttons in the cargo compartment to
raise or lower the rear section of the vehicle to
facilitate loading or unloading the vehicle or con-
necting or disconnecting a trailer.
Center display settings
Easy Entry and Exit Suspension Control
The vehicle can be lowered to make it easier to
get in and out.
Activating easy entry in the center display: 1.
Tap Settings in the Top view.
2.

Tap My Car Mirrors and Convenience
.
3. Select Easy Entry and Exit Suspension
Control.
>

When the vehicle is parked and the
engine is turned off, the level is lowered.
(Level adjustment will stop if a side door
is opened and will resume after a slight
delay when the door has been closed.)
When the engine is started and the vehi-
cle begins to move, the level will be raised
to the height set by the selected drive
mode.
Disable Leveling Control
In certain situations, this function must be turned
off, e.g. before the vehicle is raised using a jack*.
The level difference caused by raising the vehicle
with a jack could cause problems with the pneu-
matic suspension.
Turning off the function in the center display:
1. Tap Settings in the Top view.
2.

Tap My Car Parking Brake and
Suspension .
3. Select Disable Leveling Control.
Related information
Leveling control* and suspension (p. 461)
Loading recommendations (p. 598) Low Speed Control
The low-speed function, Low Speed Control
(LSC), facilitates and improves control and trac-
tion on rough roads and slippery surfaces, e.g.
when towing a trailer on grass or up boat ramps.
The function is included in the Off Road drive
mode.
Low Speed Control is designed for driving on
rough roads and when towing trailers at low
speeds, up to approximately 40 km/h (25 mph).
When driving at low speeds, LSC prioritizes low
gears and all-wheel drive to help avoid wheel spin
and improve traction on all wheels. The accelera-
tor pedal will be less responsive to improve trac-
tion and speed control at low speeds.
The function is activated together with Hill
Descent Control (HDC), which makes it possible
to control speed going down steep hills using the
accelerator pedal and reduces the need to use
the brake pedal. The system makes it possible to
maintain a low and uniform speed when driving
down steep hills.