2018 VOLVO XC90 T8 trailer

10
STARTING AND DRIVING
Starting the vehicle424
Switching off the vehicle 426
Ignition modes 427
Selecting ignition mode 428
Brake functions 429
Brakes 429
Brake Assist System 431
Braking on wet roads 431
Braking on salted roads 431
Maintenance of the brake system 432
Parking brake 432
Activating and deactivating the park- ing brake 433
Settings for automatically activatingthe parking brake 434
Parking on a hill 434
Parking brake malfunction 435
Auto-hold brakes 436
Activating and deactivating Auto-hold at a standstill 436
Hill Start Assist 437
Braking assist after a collision 437
Transmission 438
Gear selector positions for automatictransmissions 439

Using the steering wheel paddles
* to
shift 441
Shiftlock 442
The kickdown function 442
Gear indicator *
442
All Wheel Drive (AWD) 443
Drive systems 443
Starting and stopping the combus- tion engine in Twin Engine vehicles 444
Drive modes 445
Changing drive mode 449
Leveling control * and suspension
450
Leveling control settings *
453
Low Speed Control 453
Activating and deactivating LowSpeed Control using the function button 454
Hill Descent Control 454
Activating and deactivating HillDescent Control using the functionbutton 455
Economical driving 456
Using the electric motor only 457
Factors affecting electric motor range 458
"Hold" and "Charge" functions 459
Preparing for a long trip 460
Winter driving 461

Driving through standing water462
Opening/closing the fuel filler door 462
Refueling 463
Fuel 464
Octane rating 465
Emission controls 467
Overheating of engine and transmission 468
Battery drain 469
Jump starting using another battery 469
Detachable towbar *
471
Driving with a trailer 472
Trailer Stability Assist *
474
Checking trailer lights 475
Towing using a towline 476
Attaching and removing the towing eyelet 476
Recovery 477
HomeLink ®
* 478
Programming HomeLink ®
* 479
Using HomeLink 480
Type approval for HomeLink ®
* 481
Compass 481
Activating and deactivating the compass 482
Calibrating the compass 482

DRIVER SUPPORT
* Option/accessory.
274
Electronic Stability Control
The Electronic Stability Control (ESC 2
) function
helps the driver avoid skidding and improves the vehicle's directional stability.
This symbol will be displayed in the instrument panel when theESC system is intervening. When the ESC has intervened to apply the brakes, a pulsingsound may be heard and the
vehicle may accelerate more slowly than expec-ted when the accelerator pedal is depressed.
The ESC system consists of the following sub- functions: • Stability control 3
• Spin control and active yaw control
• Engine drag control
• Trailer Stability Assist
WARNING
•The Electronic Stability Control system ESC is supplementary driver supportintended to facilitate driving and make itsafer – it cannot handle all situations inall traffic, weather and road conditions.
• ESC is not a substitute for the driver'sattention and judgment. The driver isalways responsible for ensuring the vehi-cle is driven in a safe manner, at theappropriate speed, with an appropriatedistance to other vehicles, and in accord-ance with current traffic rules and regula-tions.
Stability control 3This function helps control the driving and brak-ing force of each individual wheel in an attemptto stabilize the vehicle.
Spin control and active yaw controlThis function is active at low speeds and brakesthe wheels that are spinning to transfer additionalpower from wheels that are not spinning. This function also helps prevent the wheels from spinning while the vehicle is accelerating.
Engine drag control
Engine drag control (EDC
4
) helps prevent inad-
vertent wheel lock, e.g. after downshifting orusing engine braking when driving at low speedson a slippery surface. Inadvertent wheel lock while driving could impair the driver's ability to steer the vehicle.
Trailer Stability Assist *5
Trailer Stability Assist (TSA
6
) is designed to help
stabilize a vehicle that is towing a trailer if thevehicle and trailer have begun to sway. For moreinformation, see "Trailer Stability Assist".
NOTE
The TSA function is deactivated if ESC Sport
Mode is activated.
Related information
• Electronic Stability Control Sport mode (p. 275)
• Activating/deactivating Sport mode in Elec-tronic Stability Control (p. 275)
1
Roll Stability Control
2 Electronic Stability Control
3 Also called traction control.
4 Engine Drag Control
5Trailer Stability Assist is included if the vehicle is equipped with a Volvo original towbar.6
Trailer Stability Assist

DRIVER SUPPORT
275
•
Electronic Stability Control Sport mode limi- tations (p. 276)
• Electronic Stability Control symbols and mes-sages (p. 277)
Electronic Stability Control Sportmode
The ESC 7
system is always activated and can-
not be switched off. However, the driver can select
ESC Sport Mode, which offers more
active driving characteristics.
With the ESC Sport Mode sub-function
selected, intervention from ESC is reduced and more lateral movement is permitted, giving thedriver more control of the vehicle than usual. When
ESC Sport Mode is selected, ESC may
seem to be disabled even though it is often assisting the driver.
NOTE
When the ESC Sport Mode function is
selected, the trailer stabilizer (TSA 8
) is
switched off.
ESC Sport Mode also helps provide maximum
traction if the vehicle gets stuck or is driving on a loose surface such as deep snow or loose sand.
Related information
• Electronic Stability Control (p. 274)
Activating/deactivating Sport modein Electronic Stability Control The ESC 9
system is always activated and can-
not be switched off. However, the driver can select Sport mode, which offers more activedriving characteristics.
Sport mode can be activated/ deactivated in the center dis-play's Function view.
–Tap the ESC Sport Mode button in Func-
tion view.
> Sport mode is activated when the indica- tor light is green, and deactivated when the indicator light is gray.
When
ESC Sport Mode is activated,
this symbol will illuminate with a steady glow in the instrument panel. It willremain on until the driver deactivates
the function or until the engine is turned off. TheESC system will return to normal mode the nexttime the engine is started.
Related information
• Electronic Stability Control (p. 274)
7
Electronic Stability Control
8 Trailer Stability Assist
9 Electronic Stability Control

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DRIVER SUPPORT
296
WARNING
•The Adaptive Cruise Control function is supplementary driver support intended tofacilitate driving and help make it safer –it cannot handle all situations in all traffic,weather and road conditions.
• The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion (see the link list at the end of thisarticle).
• Adaptive Cruise Control is not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.
NOTE
Depending on market, this function may be either Standard or Optional.
Adaptive Cruise Control regulates speed by accelerating and braking. It is normal for the brakes to emit a slight sound when they arebeing used to adjust speed. Adaptive Cruise Control always attempts to regu- late speed smoothly. The driver must apply thebrakes in situations requiring immediate braking.For example, when there are great differences inspeed between vehicles or if the vehicle aheadbrakes suddenly. Due to limitations in the radarsensor, braking may occur unexpectedly or not atall. Adaptive Cruise Control is designed to follow a vehicle ahead in the same lane and maintain atime interval to that vehicle set by the driver. If theradar sensor does not detect a vehicle ahead, itwill instead maintain the speed set by the driver.This will also happen if the speed of the vehicleahead exceeds the set speed for your vehicle.
• Adaptive Cruise Control can follow anothervehicle at speeds from a standstill up to200 km/h (125 mph).
WARNING
• Adaptive Cruise Control is not a collision avoidance system. The driver is alwaysresponsible and must intervene if the sys-tem fails to detect a vehicle ahead.
• Adaptive Cruise Control does not brakefor people or animals and does not brakefor small vehicles, such as bikes andmotorcycles. Similarly, it does not brakefor low trailers, oncoming, slow-moving orstationary vehicles and objects.
• Do not use Adaptive Cruise Control indemanding situations, such as in city traf-fic, at intersections, on slippery surfaces,with a lot of water or slush on the road, inheavy rain/snow, in poor visibility, onwinding roads, or on on/off ramps.
CAUTION
Maintenance of Adaptive Cruise Control com- ponents may only be performed by a work-shop – an authorized Volvo workshop is rec-ommended.
41
Adaptive Cruise Control
42 Note: This illustration is general and details may vary depending on model.

DRIVER SUPPORT
}}
* Option/accessory.307
Adaptive Cruise Control limitations
Adaptive Cruise Control (ACC 56
) may have lim-
ited functionality in certain situations.
Steep roads and/or heavy loadsAdaptive Cruise Control is primarily intended to be driven on flat roads. The function may not beable to maintain the correct time interval to thevehicle ahead when driving down steep hills. Thedriver should be extra attentive and prepared toapply the brakes.
• Do not use Adaptive Cruise Control if thevehicle is carrying a heavy load or towing atrailer.
Other limitations
•
The Off Road drive mode cannot be
selected if Adaptive Cruise Control is acti- vated.
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".
NOTE
The function uses the vehicle's radar unit, which has some general limitations – see thesection "Radar unit limitations".
Related information
• Adaptive Cruise Control
* (p. 295)
Switching between Cruise Controland Adaptive Cruise Control
In vehicles equipped with Adaptive Cruise Con- trol (ACC 57
), the driver can switch between
Cruise Control (CC 58
) and ACC.
A symbol in the instrument panel indicates which cruise control system is active
CCACC
AA
Cruise control Adaptive Cruise Control
A WHITE symbol: The function is active. GRAY symbol: Standby mode
Switching from ACC to CCTo do so: 1. Press the
button on the steering wheel
keypad to put Adaptive Cruise Control in standby mode.
56 Adaptive Cruise Control

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DRIVER SUPPORT
312
WARNING
•The Pilot Assist function is supplementary driver support intended to facilitate driv-ing and help make it safer – it cannothandle all situations in all traffic, weatherand road conditions.
• The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion (see the link list at the end of thisarticle).
• Pilot Assist should only be used if thereare clear lane lines painted on each sideof the lane. All other use will increase therisk of contact with nearby obstacles thatcannot be detected by the functions.
• Pilot Assist is not a substitute for the driv-er's attention and judgment. The driver isalways responsible for ensuring the vehi-cle is driven in a safe manner, at theproper position within the lane, at theappropriate speed, with an appropriatedistance to other vehicles, and in accord-ance with current traffic rules and regula-tions.
NOTE
Depending on market, this function may be either Standard or Optional.
Pilot Assist regulates speed by accelerating and braking. It is normal for the brakes to emit a slightsound when they are being used to adjust speed. Pilot Assist attempts to smoothly regulate speed. The driver must apply the brakes in situationsrequiring immediate braking. For example, whenthere are great differences in speed betweenvehicles or if the vehicle ahead brakes suddenly.Due to limitations in the camera and radar sen-sor, braking may occur unexpectedly or not at all. Pilot Assist is designed to follow a vehicle ahead in the same lane and maintain a time interval tothat vehicle set by the driver. If the radar sensordoes not detect a vehicle ahead, it will insteadmaintain the speed set by the driver. This will alsohappen if the speed of the vehicle aheadexceeds the set speed for your vehicle.
• Pilot Assist can follow another vehicle atspeeds from a standstill up to 200 km/h(125 mph).
• Pilot Assist can provide steering assistancefrom near-stationary speeds up to 140 km/h(87 mph).
WARNING
• Pilot Assist is not a collision avoidance system. The driver must intervene if thesystem fails to detect a vehicle ahead.
• Pilot Assist does not brake for people,animals, objects, small vehicles (e.g.cycles and motorcycles), low trailers aswell as oncoming, slow or stationary vehi-cles.
• Do not use Pilot Assist in demanding sit-uations, such as in city traffic, at intersec-tions, on slippery surfaces, with a lot ofwater or slush on the road, in heavy rain/snow, in poor visibility, on winding roads,on highway on- or off-ramps, or with atrailer connected to the vehicle.
CAUTION
Maintenance of the integrated components in Pilot Assist may only be performed by a work-shop – an authorized Volvo workshop is rec-ommended.
In curves and forks in the roadPilot Assist is designed to interact with the driver. The driver should never wait for steering assis-tance from Pilot Assist, but instead should alwaysbe ready to increase his or her own steeringefforts, particularly in curves.

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DRIVER SUPPORT
* Option/accessory.
324
The driver is responsible for ensuring that the vehicle maintains a suitable distancefrom such obstacles.
• The camera and radar sensors do nothave the capacity to detect all oncomingobjects and obstacles in traffic environ-ments, e.g. potholes, stationary obstaclesor objects that completely or partiallyblock the route.
• Pilot Assist does not "see" pedestrians,animals, etc.
• The recommended steering input is lim-ited in force, which means that it cannotalways help the driver to steer and keepthe vehicle within the lane.
• Pilot Assist is switched off if the powersteering is working with reduced power -e.g. during cooling due to overheating(see section "Speed-dependent steeringforce").
The driver can always correct or adjust steeringassistance provided by Pilot Assist by turning thesteering wheel to the desired position.
Steep roads and/or heavy loadsPilot Assist is primarily intended to be driven onflat roads. The function may not be able to main-tain the correct time interval to the vehicle aheadwhen driving down steep hills. The driver should be extra attentive and prepared to apply thebrakes.
• Do not use Pilot Assist if the vehicle is carry-ing a heavy load or towing a trailer.
NOTE
Pilot Assist cannot be activated if a trailer, bike carrier or similar is connected to thevehicle electrical system.
Other limitations
•
The Off Road drive mode cannot be
selected when Pilot Assist is activated.
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".
NOTE
The function uses the vehicle's radar unit, which has some general limitations – see thesection "Radar unit limitations".
Related information
• Pilot Assist (p. 311)
• Speed-dependent steering wheel resistance (p. 272)
Pilot Assist
* symbols and messages
A number of symbols and messages relating to Pilot Assist may be displayed in the instrument panel and/or the head-up display *.

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DRIVER SUPPORT
328
CauseAction
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 cam-era/radar sensor from functioning.
There is dirt between the inside of the windshield and the camera/radarsensor. Consult a workshop to have the area of the windshield on the inside of the cam-era's casing cleaned. An authorized Volvo workshop is recommended.
NOTE
Keep the windshield in front of the camera and radar unit clean.
Vehicle speedThe radar sensor's ability to detect a vehicle ahead is significantly reduced if:
• the speed of the vehicle ahead differs greatlyfrom your vehicle's speed
Limited field of visionThe radar sensor has a limited field of vision. Insome situations, it may detect a vehicle later thanexpected or not at all.
The radar sensor's field of vision.
The radar sensor's detection of vehicles very close to your vehicle may be delayed in cer-tain situations, e.g. if a vehicle pulls in between your vehicle and the vehicle directlyahead.
Small vehicles, such as motorcycles, or vehi- cles that are not driving in the center of thelane may remain undetected.
In curves, the radar may detect the wrong vehicle or lose sight of a target vehicle.
Low trailers
Low trailer in the radar shadow.
Low trailers may also be difficult or even impossi- ble for the radar to detect. The driver should beextra alert when driving behind vehicles towing low trailers when Adaptive Cruise Control or Pilot Assist is activated.