power steering VOLVO XC90 TWIN ENGINE 2018 Owner's Guide

STARTING AND DRIVING
* Option/accessory.
474 Trailer Stability Assist*
Trailer Stability Assist (TSA 8
) is a function
designed to help stabilize a vehicle that is tow-
ing a trailer when the vehicle and trailer have
begun to sway. The function is part of the Elec-
tronic Stability Control system ESC 9
.
Reasons for swayingA vehicle towing a trailer may begin to sway for
various reasons. Normally this only occurs at high
speeds. However, if the trailer is overloaded or
unevenly distributed, e.g. too far back, there is a
risk of swaying even at low speeds.
Swaying may be caused by factors such as:
• The vehicle and trailer are hit by a sudden,
strong crosswind.
• The vehicle and trailer are traveling on an
uneven road or over a bump.
• Sudden movements of the steering wheel.
Once swaying has begun, it can be difficult or
impossible to stop it. This makes the vehicle and
trailer difficult to control and there is a risk of
swerving into oncoming traffic or driving off the
road.
Trailer Stability Assist functionTrailer Stability Assist continuously monitors the
vehicle's movements, particularly lateral move- ments. If swaying is detected, the brakes are
applied individually on the front wheels, which has
a stabilizing effect on the vehicle and trailer. This
is often enough to enable the driver to regain
control of the vehicle.
If the Trailer Stability Assist function's first
attempt is not adequate to stop the swaying
motion, the brakes are applied on all wheels and
engine power is temporarily reduced. As the
swaying motion begins to decrease and the vehi-
cle and trailer have once again become stable,
TSA stops regulating the brakes/engine power
and the driver regains control of the vehicle.
NOTE
Trailer Stability Assist is deactivated if the
driver selects the sport mode by deactivating
ESC in the center display's menu system. Trailer Stability Assist may not intervene if the
driver tries to compensate for the swaying motion
by moving the steering wheel rapidly, because
the system will then not be able to determine if it
is the trailer or the driver causing the swaying. When Trailer Stability Assist is
activated, the ESC symbol is
displayed in the instrument
panel.
Related information
•
Driving with a trailer (p. 472)
• Electronic Stability Control (p. 274) 8
Trailer Stability Assist
9 Electronic Stability Control

AUDIO, MEDIA AND INTERNET
497
Selecting sub-channels
To listen to a station's sub-channel(s), tap the
station on the screen or press the forward/back
arrow keys on the right-side steering wheel key-
pad or below the screen.
Sub-channels can also be saved as radio favor-
ites.
If you tap a sub-channel favorite, it may take up
to 6 seconds before the channel becomes audi-
ble. If you tap a station while you are out of digital
range of the transmitter, No reception will be
displayed.
Related information
• HD Radio™ (p. 494)
• Activating and deactivating the HD Radio
™
(p. 496)
• Changing waveband and radio station
(p. 491)
• Searching for a radio station (p. 492)
• HD Radio™ limitations (p. 497) HD Radio
™ limitations
Limitations
•
Main channel vs. sub-channels (FM only):
The main channel is the only channel that
can receive in hybrid mode (both digital and
analog). If a frequency has sub-channels,
they are broadcast in digital mode only. The
main FM channel will be displayed as, for
example, "WRIF-FM HD1". The sub-FM
channels will be displayed as"WRIF-FM
HD2", "WRIF-FM HD3", etc.
• Reception coverage area: Due to current
IBOC transmitter power limitations, the
reception coverage area in digital mode is
somewhat more limited than the station's
analog coverage area. Be aware that, like all
radio transmission technology, terrain, time of
day, vegetation and buildings can have a
positive or negative effect on radio reception.
• Analog to digital/digital to analog blend-
ing: Analog to digital blending will occur as
the signal strength reaches a preset thresh-
old in the receiver. This will be noticeable in
fringe areas (areas with weak reception) and
is normal.
NOTE There may be a noticeable difference in
sound quality when a change from analogue
to digital or digital to analogue occurs, such
as:
• Volume increase or decrease
• Equalizer settings, i.e., Bass/ Midrange/
Treble cut or boost
• Time alignment (Digital program material
in extreme cases can be as much as 8
seconds behind the analogue). This will
noticeable as a "stuttering" effect.
The above items are dependant on the
broadcaster's equipment settings and do
not indicate a fault in the vehicle's radio
receiver or antenna systems.
Related information
• HD Radio™ (p. 494)
• Activating and deactivating the HD Radio™
(p. 496)
• HD Radio
™
sub-channels (p. 496)

||MAINTENANCE AND SERVICE
* Option/accessory.
624 Function
AA 12 V outlet in trunk/cargo com-
partment*
USB ports for iPad holders
C15 –
––
––
––
–Heated windshield*, left side
ShuntHeated windshield*, left side
40Headlight washers*
25Windshield washer
25–
–Horn
20Alarm siren*
5Brake system control module
(valves, parking brake)
40Wipers
30Rear window washer
25 Function
AA Heated windshield*, right side
40 Parking heater*
20 Brake system control module
(ABS pump)
40 –
– Heated windshield*, right side
Shunt Fed when ignition is on: Engine
control module; transmission
components, electrical power
steering, central electrical mod-
ule
5 Exterior vehicle sound (certain
markets)
5 Right-side headlight
7.5
Right-side headlight, some mod-
els with LED D 15 –
– –
– –
– Airbags
5 Function
AA Left-side headlight
7.5
Left-side headlight, some mod-
els with LED D 15 Accelerator pedal sensor
5 Transmission control module;
gear selector control module
15 Engine control module
5 –
– –
– –
– –
– Engine control module; actuator;
throttle unit; turbo-charger valve
20 Solenoids; valve; engine cooling
system thermostat
10 Vacuum regulators; valve 7.5
Spoiler shutter control module;
radiator shutter control module
5 –
–

MAINTENANCE AND SERVICE
}}
* Option/accessory. 627
Fuse pliers are provided on the inside of the fuse
box cover to assist in removing and inserting
fuses.
There are also spaces for several extra fuses in
the distribution box in the engine compart-
ment.
Positions
•
Fuses 1, 3-21, 23-36, 39-53 and 55-59 are
"Micro" fuses.
• Fuses 2-22, 37-38 and 54 are "MCase"
fuses and should only be replaced by a work-
shop 18
. Function
AA –
––
––
–Movement sensor*
5Media player
5Instrument panel
5Center console buttons
5Sun sensor
5 Function
AA –
– –
– Steering wheel module
5 Module for start knob and parking
brake controls
5 Heated steering wheel* module
15 –
– –
– –
– –
– Climate system control module 10
–
– Data link connector OBD-II 10
Center display
5 Climate system blower module
(front)
40 USB HUB
5 Function
AA Instrument lighting; Interior lighting;
Rearview mirror auto-dim function*;
Rain and light sensors*; Rear tun-
nel console keypad, second row of
seats* B
; Power front seats*; Rear
door control panels; Climate sys-
tem blower module left/right
Power rear seats C
; Display for rear
seat convenience functions C
; Rear
seat massage function C7.5 Control module for driver support
functions
5 Panoramic roof with sun curtain*
20 Head-up display*
5 Passenger compartment lighting 5
–
– Ceiling console display (seat belt
reminder/front passenger side air-
bag indicator)
5 –
– Humidity sensor
518
An authorized Volvo workshop is recommended.

INDEX
675
Overheating 468, 472
Owner's information 16
OWNER'S MANUAL 21
environmental labeling 23
in cellular phone 20
in the center display 17, 18
P Paddle at steering wheel
199
Paint color code

646
paint damage and touch-up 645, 646
Panoramic roof opening and closing 173
pinch protection 166
sun shade 172, 175
ventilation position 174
PAP – Park Assist Pilot 395, 396, 399, 400, 402, 403
Park Assist Camera 386, 387, 388, 390, 391, 393, 394
settings 391
Park Assist Camera limitations 391
Park Assist Pilot 395, 396, 399, 400, 402, 403
function 395, 396, 400, 402, 403 limitations
400
operation
396, 399
Symbols and messages 403
Park Assist Pilot – PAP 395, 396, 399, 400, 402, 403
parking on hills 434
Parking Assist 381, 382, 383, 384, 385 function 381, 382, 383
Parking brake 432 activate and deactivate 433
automatic activation 434
Low battery charge level 435
Parking climate 230 Symbols and messages 236
Passenger compartment filter 207
Passenger compartment interior 580 center console 581
electrical outlet 582
glove compartment 585
sun visor 586
Passenger compartment lighting 162, 164 auto switch 162
Passing assistance 304, 305, 321
personal information (Privacy Policy) 34
Phone 520 changing to another 524 connect
521
connect automatically 523
connect manually 523
delete 525
disconnect 524
phone call 525, 527
text message 526
voice control 147
Pilot Assist 311, 314, 315, 316, 317, 319, 321, 322, 323, 324
pass 321
pinch protection 166
resetting 167
PIN code 533
Polishing 639
Position lights 154
Power 661
electric motor 661
Power folding door mirrors 171
Power panoramic roof 172
Power save mode 469
Power seats 185
Power tailgate 261
Power windows 167, 168
pinch protection 166

INDEX
678Start battery 469, 615
overload 469
Start engine 424
Starting the engine after a collision 62
Start the vehicle 424
Steel cargo grid 592
Steering assistance at risk of colli-
sion 372, 373, 374, 375, 376, 377, 378, 380
Steering assistance at risk of rear-end col-
lision 377, 378
Steering power level, see Steering wheel
resistance 272
Steering resistance at risk of head-on colli-
sion 375, 376
Steering wheel 199 heating 218
keypad 199
paddle 199
steering wheel adjustment 199
Steering wheel keypad 199
Steering wheel paddles 441
Steering wheel resistance, speed-depend-
ent 272
Stone chips and scratches 645, 646
Storage compartments 580 center console 581 glove compartment
585
sun visor
586
Sunroof pinch protection 166
Sun shade panoramic roof 172, 175
pinch protection 166
rear door 169
Sun visor 586 mirror lighting 163
Symbols indicator symbols 94
Symbols and messages Adaptive Cruise Control 309
center display's status bar 124
Collision warner with auto-brake 346
hybrid-related 419
parking climate 236
Symbols and messages for Assistance at
risk of collision 380
system updates 601
T Tailgate
locking/unlocking
243, 256
open/close with foot movement 265 power
261
unlocking from inside
259
Technician certification 37
Temperature adjusting 226, 227, 228
perceived 203
Temperature monitoring 411
Temporary spare spare tire 569
Temporary tire sealing system execution, checking 573
Inflating tires 577
location 572
overview 572
sealing compound 572
Terms and conditions services 34
users 536
Tire dimensions 554, 564
Tire pressure decal 559
Tire pressure monitoring calibrating 561
Tires 550
direction of rotation 552
glossary of terms 553
inflation pressure table 665
mounting 568
pressure 665