2019 VOLVO XC90 TWIN ENGINE ESP

||DRIVER SUPPORT
288
WARNING

The ASL function is supplementary driver
support intended to facilitate driving and
help make it safer – it cannot handle all
situations in all traffic, weather and road
conditions.
Even if the driver can clearly see the
speed limit sign, the speed information
from the Road Sign Information (RSI)
function to ASL may be incorrect. In such
cases, the driver must intervene and
accelerate or brake to an appropriate
speed.
ASL is not a substitute for the driver's
attention and judgment. The driver is
always responsible for ensuring the vehi-
cle is driven in a safe manner, at the
appropriate speed, with an appropriate
distance to other vehicles, and in accord-
ance with current traffic rules and regula-
tions.
See also the heading "Road Sign Infor-
mation limitations".Is SL or ASL active?The symbols in the instrument panel indicate
which Speed Limiter function is active: Symbol
SLASL A
✓ ✓ Road sign symbol
B
after "70" = ASL is
activated. ✓ A
WHITE symbol: The function is active. GRAY symbol: Standby
mode.
B See "ASL symbol" below for an explanation of the symbol's dif-
ferent colors.
ASL symbol
The road sign symbol (next to the
stored speed ("70" here) in the center
of the speedometer) can be displayed
in three different colors, which are
explained in the following table: Road sign
symbol's color Explanation
Greenish-yel- low ASL is active
Gray

ASL is in standby mode
Amber/orange ASL is temporarily in standby mode, e.g. because
a speed limit sign could not
be read.
Related information
Speed limiter (p. 283)
Activating/deactivating Automatic Speed
Limiter (p. 289)
Changing Automatic Speed Limiter tolerance
(p. 290)
Automatic Speed Limiter limitations (p. 291)

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292
WARNING

The cruise control function is supplemen-
tary driver support intended to facilitate
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 sections
in the Owner's Manual about this function
to learn of its limitations, which the driver
must be aware of before using the func-
tion (see the link list at the end of this
article).
Cruise control is not a substitute for the
driver's attention and judgment. The driver
is always responsible for ensuring the
vehicle is driven in a safe manner, at the
appropriate speed, with an appropriate
distance to other vehicles, and in accord-
ance with current traffic rules and regula-
tions.
Related information
Activating and starting Cruise Control
(p. 292)
Managing Cruise Control speed (p. 293)
Deactivating and putting Cruise Control in
standby mode (p. 294)
Reactivating Cruise Control from standby
mode (p. 295)
Switching off Cruise Control (p. 296)
Switching between Cruise Control and Adap-
tive Cruise Control (p. 313) Activating and starting Cruise
Control
The Cruise Control (CC 24
) function must be
selected and activated in order to regulate
speed. Note: This illustration is general and details may vary
depending on model.
Putting Cruise Control in standby modeTo put Cruise Control in standby mode:
–
Tap ◀ (1) or ▶ (3) and scroll to the (4) function.
>

A symbol will appear and Cruise Control
can then be activated.
Activating/starting Cruise ControlIn order to start Cruise Control from standby
mode, the vehicle's current speed must be

||DRIVER SUPPORT
* Option/accessory.
300
WARNING
The radar sensor has a limited field of
vision. In some situations, it may detect a
vehicle later than expected or not detect
other vehicles at all.
The radar sensor cannot cover all driving
situations and traffic, weather and road
conditions.
The driver is responsible for maintaining a
safe distance and speed and must inter-
vene if the various driver support systems
do not maintain a suitable speed or suita-
ble distance to the vehicle ahead.
Maintenance of radar sensor components
may only be performed by a trained and
qualified Volvo technician.
Strong sunlight, reflections from the road
surface, strong lighting contrasts or using
sunglasses may make the warning light in
the windshield difficult to see. Poor
weather or winding roads can affect the
radar sensor's capacity to detect vehicles
ahead.
A vehicle's size (e.g., a motorcycle) can
also affect the radar sensor's capacity to
detect another vehicle. This may result in
the warning light illuminating at a shorter
distance than the one that has been set
or not illuminating at all.
High speeds may also result in the warn-
ing light illuminating at a shorter distance
than the one that has been set due to
limitations in the radar sensor's range.
NOTE The function uses the vehicle's radar unit,
which has some general limitations – see the
section "Radar unit limitations".
Related information

Distance Alert* (p. 296)
Radar sensor limitations (p. 333) Adaptive Cruise Control*
Adaptive Cruise Control (ACC 38
) helps the
driver maintain a constant speed with a set time
interval to the vehicle ahead.
Adaptive Cruise Control helps provide a more
relaxed driving experience on long trips on high-
ways or long, straight roads with even traffic
flows. The camera/radar sensor measures the distance to the
vehicle ahead
39
.
The driver sets a speed and a time interval to the
vehicle ahead. If the camera/radar sensor detects
a slower-moving vehicle ahead, your vehicle's
speed will be automatically adapted according to
the set time interval to that vehicle. When there
are no longer slower-moving vehicles ahead, the
vehicle will return to the set speed.

DRIVER SUPPORT
}}
301
WARNING
The Adaptive Cruise Control function is
supplementary driver support intended to
facilitate 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 sections
in the Owner's Manual about this function
to learn of its limitations, which the driver
must be aware of before using the func-
tion (see the link list at the end of this
article).
Adaptive Cruise Control is not a substi-
tute for the driver's attention and judg-
ment. The driver is always responsible for
ensuring the vehicle is driven in a safe
manner, at the appropriate speed, with an
appropriate distance to other vehicles,
and in accordance with current traffic
rules 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 are
being used to adjust speed.
Adaptive Cruise Control always attempts to regu-
late speed smoothly. The driver must apply the
brakes in situations requiring immediate braking.
For example, when there are great differences in
speed between vehicles or if the vehicle ahead
brakes suddenly. Due to limitations in the radar
sensor, braking may occur unexpectedly or not at
all.
Adaptive Cruise Control is designed to follow a
vehicle ahead in the same lane and maintain a
time interval to that vehicle set by the driver. If the
radar sensor does not detect a vehicle ahead, it
will instead maintain the speed set by the driver.
This will also happen if the speed of the vehicle
ahead exceeds the set speed for your vehicle.
Adaptive Cruise Control can follow another
vehicle at speeds from a standstill up to
200 km/h (125 mph).
WARNING
Adaptive Cruise Control is not a collision
avoidance system. The driver is always
responsible and must intervene if the sys-
tem fails to detect a vehicle ahead.
Adaptive Cruise Control does not brake
for people or animals and does not brake
for small vehicles, such as bikes and
motorcycles. Similarly, it does not brake
for low trailers, oncoming, slow-moving or
stationary vehicles and objects.
Do not use Adaptive Cruise Control in
demanding situations, such as in city traf-
fic, at intersections, on slippery surfaces,
with a lot of water or slush on the road, in
heavy rain/snow, in poor visibility, on
winding 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.
38
Adaptive Cruise Control
39 Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
}}
* Option/accessory. 307
NOTE
The greater the vehicles' speed, the
greater the distance between them for a
set time interval.
Only use the time intervals permitted by
local traffic regulations.
If the Adaptive Cruise Control does not
seem to respond with a speed increase
when activated, it may be because the
time interval to the vehicle ahead is
shorter than the set time interval.
WARNING
Only use a time interval suitable for the
current traffic conditions.
The driver should be aware that short
time intervals give them limited time to
react and act to any unforeseen traffic
situation.
Setting how ACC should maintain
distance* to the vehicle ahead
A number of different settings can be made for
how Adaptive Cruise Control should maintain a
time interval to the vehicle ahead. Settings are
made using the DRIVE MODE controls. Select one of the following:
Eco - ACC will focus on providing optimal
fuel economy, which will increase the time
interval to the vehicle ahead.
Comfort - ACC will focus on following the
set time interval to the vehicle ahead as
smoothly as possible.
Dynamic
- ACC will focus on following the
set time interval to the vehicle ahead more
exactly, which could mean faster acceleration
and heavier braking.
For more information, see "Drive modes".
Related information
Adaptive Cruise Control* (p. 300)
Drive modes (p. 454)
Managing Cruise Control speed (p. 293) Deactivating/reactivating Adaptive
Cruise Control
Adaptive Cruise Control (ACC
46
) can be tempo-
rarily put into standby mode and then reactiva-
ted.
Deactivating and putting Adaptive
Cruise Control in standby mode Note: This illustration is general and details may vary
depending on model.
46
Adaptive Cruise Control

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317
WARNING
The Pilot Assist function is supplementary
driver support intended to facilitate driv-
ing and help make it safer – it cannot
handle all situations in all traffic, weather
and road conditions.
The driver is advised to read all sections
in the Owner's Manual about this function
to learn of its limitations, which the driver
must be aware of before using the func-
tion (see the link list at the end of this
article).
Pilot Assist should only be used if there
are clear lane lines painted on each side
of the lane. All other use will increase the
risk of contact with nearby obstacles that
cannot be detected by the functions.
Pilot Assist is not a substitute for the driv-
er's attention and judgment. The driver is
always responsible for ensuring the vehi-
cle is driven in a safe manner, at the
proper position within the lane, at the
appropriate speed, with an appropriate
distance 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 slight
sound when they are being used to adjust speed.
Pilot Assist attempts to smoothly regulate speed.
The driver must apply the brakes in situations
requiring immediate braking. For example, when
there are great differences in speed between
vehicles 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 to
that vehicle set by the driver. If the radar sensor
does not detect a vehicle ahead, it will instead
maintain the speed set by the driver. This will also
happen if the speed of the vehicle ahead
exceeds the set speed for your vehicle.
Pilot Assist can follow another vehicle at
speeds from a standstill up to 200 km/h
(125 mph).
Pilot Assist can provide steering assistance
from near-stationary speeds up to 140 km/h
(87 mph).WARNING
Pilot Assist is not a collision avoidance
system. The driver must intervene if the
system fails to detect a vehicle ahead.
Pilot Assist does not brake for people,
animals, objects, small vehicles (e.g.
cycles and motorcycles), low trailers as
well 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 of
water or slush on the road, in heavy rain/
snow, in poor visibility, on winding roads,
on highway on- or off-ramps, or with a
trailer 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 always
be ready to increase his or her own steering
efforts, particularly in curves.

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* Option/accessory. 323
Setting a time interval for Pilot
Assist
Pilot Assist
can be set to different time intervals.
Different time intervals to the
vehicle ahead can be selected
and are shown in the instru-
ment panel as 1–5 horizontal
bars. The more bars, the longer
the time interval. One bar rep-
resents an interval of
approx. 1 second to the vehicle ahead. 5 bars
represents approx. 3 seconds.
NOTE When the symbol in the instrument panel
shows a vehicle and a steering wheel, Pilot
Assist follows a vehicle ahead at a preset
time interval.
When only a steering wheel is shown, there is
no vehicle ahead within a reasonable dis-
tance. Controls for setting a time interval
60
. Reduce the time interval
Increase the time interval
Distance indicator
– Press the (1) or (2) button to decrease or
increase the time interval.
>

The distance indicator (3) shows the cur-
rent time interval.
In order to follow the vehicle ahead as smoothly
as possible, Pilot Assist allows the time interval to
vary considerably in certain situations. For exam-
ple, at low speeds and short distances to the
vehicle ahead, Pilot Assist increases the time
interval slightly.
NOTE
The greater the vehicles' speed, the
greater the distance between them for a
set time interval.
Only use the time intervals permitted by
local traffic regulations.
If Pilot Assist does not seem to respond
with a speed increase when activated, it
may be because the time interval to the
vehicle ahead is shorter than the set time
interval.
WARNING
Only use a time interval suitable for the
current traffic conditions.
The driver should be aware that short
time intervals give them limited time to
react and act to any unforeseen traffic
situation.
Setting how Pilot Assist should
maintain distance* to the vehicle ahead
The driver can choose different drive modes to
determine how Pilot Assist should maintain a
time interval to the vehicle ahead. Settings are
made using the DRIVE MODE controls. 60
Note: This illustration is general and details may vary depending on mod\
el.

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* Option/accessory. 329
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. The driver is responsible for ensuring that
the vehicle maintains a suitable distance
from such obstacles.
The camera and radar sensors do not
have the capacity to detect all oncoming
objects and obstacles in traffic environ-
ments, e.g. potholes, stationary obstacles
or objects that completely or partially
block the route.
Pilot Assist does not "see" pedestrians,
animals, etc.
The recommended steering input is lim-
ited in force, which means that it cannot
always help the driver to steer and keep
the vehicle within the lane.
In vehicles equipped with Sensus
Navigation*, the function is able to use
information from map data, which could
cause variations in performance.
Pilot Assist is switched off if the power
steering is working with reduced power -
e.g. during cooling due to overheating
(see section "Speed-dependent steering
force").
The driver can always correct or adjust steering
assistance provided by Pilot Assist by turning the
steering wheel to the desired position.