2018 VOLVO XC90 TWIN ENGINE fog light

||LIGHTING
160
The rear fog light turns off automatically when
the start knob is turned clockwise to turn off the
ignition or when the lighting ring is turned to the
or position.
NOTE
Regulations concerning rear fog light use vary
from country to country.
Related information
•
Lighting panel and controls (p. 152)
• Ignition modes (p. 427) Brake lights
The brake lights are automatically illuminated
when braking.
The brake lights illuminate when the brake pedal
is depressed. They also illuminate when the
brakes are automatically applied by one of the
driver support systems.
Related information
•
Emergency brake lights (p. 160)
• Brake functions (p. 429) Emergency brake lights
The emergency brake lights are activated to
warn following vehicles of hard braking.
This function causes an additional taillight on
each side of the vehicle to illuminate.
The emergency brake lights are activated in the
event of hard braking or if the ABS system is
activated and the vehicle is traveling at a high
speed.
After the driver decelerates to a low speed and
then releases the brake, the brake lights resume
their normal brightness.
Related information
• Brake lights (p. 160)
• Brakes (p. 429)
• Hazard warning flashers (p. 161)

CLIMATE CONTROL
}}
219
Activating auto climate control
If auto climate control is activated, several cli-
mate system functions are controlled automati-
cally. Auto climate button in Climate view.
1. Open Climate view in the center display.
2.
Tap or press and hold AUTO.
• Tap - air recirculation, air conditioning and
air distribution are controlled automati-
cally.
• Press and hold - air recirculation, air con-
ditioning and air distribution are controlled
automatically. Temperature and blower
speed are changed to standard settings:
22 °C (72 °F) and speed
3 (speed 2 in
the rear seat).
>

Auto climate mode is activated and the
button lights up.
NOTE It is possible to change the temperature and
blower speed without deactivating automatic
climate control. Automatic climate control is
deactivated when the air distribution is
changed manually or when the max defroster
is activated.
Related information
•
Climate system controls (p. 213) Activating and deactivating
recirculation
The climate system's recirculation function helps
shut out smog, smoke, exhaust fumes, etc. by
reusing the air in the passenger compartment. Air recirculation button in Climate view.
1. Open Climate view in the center display.
2.
Tap Recirc.
>

Air recirculation is activated/deactivated
and the button lights up/goes out.
CAUTION If the air in the vehicle is recirculated too long,
there is a risk of fogging on the inside of the
windows.

CLIMATE CONTROL
224Automatically activating and
deactivating the heated rear window
and door mirrors
The heated rear window and door mirrors are
used to quickly remove condensation and ice
from the glass.
It is possible to select whether rear window and
door mirror heating should be automatically acti-
vated or deactivated when the engine is started.
With automatic start activated, heating will be
activated when there is a risk of ice or condensa-
tion on the windows or mirrors. Heating is auto-
matically switched off when the window or door
mirror is sufficiently warm and the condensation
or ice is gone.
1. Tap Settings in the Top view in the center
display.
2. Tap Climate.
3. Select Auto Rear Defroster to activate/
deactivate automatic rear window and door
heating.
Related information
• Activating and deactivating the heated rear
window and door mirrors (p. 223) Setting the blower speed for the
front seats
The blower can be set to several different auto-
matically controlled speeds for the front seat.
Blower control buttons in Climate view.
1. Open Climate view in the center display.
2.
Tap the desired blower speed: Off, 1-5 or
Max.
>

The blower speed will be changed and the
buttons for the set speed will light up.
CAUTION The air conditioning will not engage if the
blower is turned off completely, which may
cause fogging on the inside of the windows.
NOTE The climate system automatically adapts air-
flow as needed within the set blower speed,
which means that airflow speed may vary
slightly within the same blower speed.
Related information
•
Climate system controls (p. 213)

DRIVER SUPPORT
}}}}
323
Deactivation of the Auto-hold brake function
In certain situations, Auto-hold will be deactivated
when the vehicle is at a standstill and Pilot Assist
will go into standby mode. This means that the
brakes will be released and the vehicle could
begin to roll. The driver must actively apply the
brakes to keep the vehicle stationary.
This can occur if:
• the driver depresses the brake pedal
• the parking brake is applied
• the gear selector is moved to the P, N or R
positions
• the driver puts Pilot Assist in standby mode.
Auto Activate Parking BrakeIn certain situations, the parking brake will be
applied to keep the vehicle at a standstill.
This occurs if Pilot Assist is keeping the vehicle
stationary using the brakes and:
• the driver opens the door or unbuckles
his/her seat belt
• Pilot Assist has kept the vehicle at a stand-
still for more than approx. 5 minutes
• the brakes overheat
• the driver switches off the engine manually.
Related information
•Pilot Assist (p. 311) Pilot Assist limitations
Pilot Assist functionality may be reduced in cer-
tain situations.
Pilot Assist is a driver support function designed
to simplify driving and assist the driver in many
situations. However, the driver is always responsi-
ble for maintaining a suitable distance to vehicles
or objects around it and ensuring that the vehicle
is correctly positioned in the traffic lane.
WARNING In some situations, Pilot Assist may have trou-
ble helping the driver properly or may be
deactivated automatically – we advise against
using Pilot Assist in such cases. Examples of
such situations include:
• the lane markings are worn, missing or
cross each other.
• lane division is unclear, for example, when
the lanes divide or merge or at exits or
when there are multiple sets of markings.
• edges or other lines than lane markings
are present on or near the road, e.g.
curbs, joints or repairs to the road sur-
face, edges of barriers, roadside edges or
strong shadows.
• the lane is narrow or winding.
• the lane contains ridges or holes.
• weather conditions are poor, e.g. rain,
snow or fog or slush or reduced visibility
with poor light conditions, backlighting,
wet road surface, etc.
The driver should also note that Pilot Assist
has the following limitations:
• High curbs, roadside barriers, temporary
obstacles (traffic cones, safety barriers,
etc.) are not detected. Alternatively, they
may be detected incorrectly as lane mark-
ings, with a subsequent risk of contact
between the vehicle and such obstacles.

DRIVER SUPPORT
332Camera limitations
The camera used by several of the driver support
functions has certain limitations, which also
affect the functions using the camera.
Reduced visibilityThe camera has the same limitations as the
human eye. In other words, its “vision" is impaired
by adverse weather conditions such as heavy
snowfall/rain, dense fog, swirling dust/snow, etc.
These conditions may reduce the function of sys-
tems that depend on the camera or cause these
systems to temporarily stop functioning.
Strong sunlight, reflections from the road surface,
ice or snow covering the road, a dirty road sur-
face, or unclear lane marker lines may drastically
reduce the camera

DRIVER SUPPORT
}}}}
333 Cause
Action
The area of the windshield in front of the camera/radar sensor is
dirty or covered by ice or snow. Clean the windshield in front of the camera/radar sensor and remove dirt\
, ice and
snow.
Thick fog, heavy rain or snow is blocking the radar signals or the
camera's range of visibility. No action. Heavy precipitation may sometimes prevent the camera/radar se\
nsor from
functioning.
Water or snow is spraying/swirling up and blocking the radar signals
or the camera's range of visibility. No action. Very wet or snow-covered roads may sometimes prevent the came\
ra/
radar sensor from functioning.
There is dirt between the inside of the windshield and the camera/
radar sensor. Consult a workshop to have the area of the windshield on the inside of t\
he camera's
casing cleaned. An authorized Volvo workshop is recommended.
Bright sunlight No action. The camera/radar sensor will reset automatically when lightin\
g conditions
improve.
NOTEKeep the windshield in front of the camera
and radar unit clean.
High temperaturesIf the temperature in the passenger compartment
is very high, the camera/radar sensor will switch
off temporarily for approx. 15 minutes after the
engine is started to protect its electronic compo-
nents. When the temperature has cooled suffi-
ciently, the camera/radar sensor will automati-
cally restart.
Damaged windshield
CAUTION
If there are cracks, scratches or stone chips
on the windshield in front of any of the cam-
era and radar unit "windows" and this covers
an area of about 0.5 × 3.0 mm
(0.02 × 0.12 in.) or more, contact a workshop
to have the windshield replaced – an author-
ized Volvo workshop is recommended.
Failure to take action could result in reduced
performance for the driver support systems
that use the camera and radar unit. It could cause functions to be reduced, deac-
tivated completely or produce an incorrect
function response.
To avoid the risk of loss of function, malfunc-
tion or reduced function of the driver support
systems that use the radar unit, the following
also apply:
• Volvo advises against repairing cracks,
scratches or stone chips in the area in
front of the camera and radar unit – the
entire windshield should instead be
replaced.
• Before replacing the windshield, contact
an authorized Volvo workshop to verify

STARTING AND DRIVING
* Option/accessory.475
Checking trailer lights
When connecting a trailer, make sure that all of
the lights on the trailer are functioning before
starting to drive.
Trailer turn signals and brake lightsIf one or more of the turn signals or brake lights
on the trailer is not working, a symbol and mes-
sage will be displayed in the instrument panel.
The other lights on the trailer must be checked
manually by the driver before the vehicle is driven. Symbol
Message •
Trailer turn indicator Right
turn indicator malfunction
• Trailer turn indicator Left
turn indicator malfunction •
Trailer brake light Malfunc-
tion If any of the trailer's turn signal lights is not work-
ing, the turn signal symbol in the instrument
panel will also flash more quickly than normal.
Trailer rear fog lightWhen a trailer is connected, the vehicle's rear fog
light may not illuminate and rear fog light func-
tionality is instead transferred to the trailer. If this
is the case, check to see if the trailer is equipped
with a rear fog light before activating the vehicle's fog lights when driving with a trailer to help
ensure safe operation.
Checking trailer lights*
Automatic check
When the trailer has been connected to the vehi-
cle's electrical system, its lights can be checked
by automatically activating them. This function
helps the driver check that the trailer's lights are
functioning correctly before starting to drive.
In order to perform this check, the engine must
be turned off.
1. When a trailer is connected to the towbar, the message Automatic Trailer Lamp
Check will appear in the instrument panel.
2.

Acknowledge the message by pressing the
O button on the right-side steering wheel
keypad.
> The light check will begin.
3. Get out of the vehicle to perform the check. > All of the lights on the trailer will beginflashing, and then illuminate separately
one at a time.
4. Visually check that all of the trailer's lights are functioning correctly.
5. After a short time, all of the trailer's lights will start flashing again.
> The light check is completed.
Disabling the automatic check
The automatic light check can be disabled in the
center display.
1.Tap Settings in the Top view.
2.

Tap My Car Lights and Lighting
.
3. Deselect Automatic Trailer Lamp Check.
Manual check
If the automatic check has been disabled, the
check can be started manually.
1.
Tap Settings in the Top view.
2.

Tap My Car Lights and Lighting
.
3. Select Manual Trailer Lamp Check.
>

The light check will begin. Get out of the
vehicle to perform the check.
Related information
• Driving with a trailer (p. 472)

INDEX
671
Electronic immobilizer 252
emergency brake lights 160
Emission inspection readiness 598
Engine
automatic start and stop of combustion
engine 444
overheating 468
start 424
turn off 426
Engine braking, automatic 454
Engine compartment coolant 612
engine oil 610
overview 609
Engine drag control 274
Engine oil 610 filling 611
filter 610
grade and volume 662
Engine shutdown 426
Engine specifications 661
Engine temperature high 468
Environment 27
Error messages Adaptive Cruise Control 309
see Messages and symbols 309, 324 Error messages in BLIS
352
Ethanol content max. 10% by volume

464
Exterior dimensions 657
F Federal Clean Air Act
598
Ferry transport
450
Flat tire 572
Flooded road 462
Fluids, volumes 650, 664
Fluids and oils 663, 664
Fog lights rear 159
Four-C 450
Front seat blower 224
climate 213
heating 215, 216
temperature 226
ventilation 217
Front seat manual 184
Front seats, power 185 adjusting passenger seat from driver's
seat 191 adjusting seat
185
Lumbar support
190
massage 188, 189
memory function 186, 187
multifunction control 188, 189, 190
Side bolsters 190
FSC, environmental labeling 23
Fuel 464 Travel Link service 505
Fuel filling 463
Fuel gauge 86
Fuel requirements 464, 465
Fuel tank volume 664
Fuse box 621
Fuses below the glove compartment 626
general 620
in engine compartment 622
in the cargo compartment 629
replacing 621
G Gasoline grade
464
Gauge fuel gauge

86