2018 VOLVO XC90 TWIN ENGINE ECO mode

DRIVER SUPPORT
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* Option/accessory. 291Function buttons and symbols
33
.
To turn off Cruise Control:
1. Press the button on the steering wheel
(2).
>

Cruise Control will go into standby mode.
2. Press the ◀ (1) or ▶ (3) buttons on the
steering wheel to select another function.
>
The Cruise Control symbol (4) in
the instrument panel will go out and the
set speed will be erased.
3. Press the (2) button on the steering
wheel keypad again.
>

Another function will be activated.
NOTE In vehicles equipped with Adaptive Cruise
Control*, it is possible to switch between
cruise control and Adaptive Cruise Control –
see the heading "Switching between CC and
ACC".
Related information
• Cruise control (p. 286) Distance Alert*
The Distance Alert 34
function can help the driver
become aware if the time interval to the vehicle
in front is too short.
However, the vehicle must be equipped with a
head-up display in order to display the Distance
Alert, which will then be indicated by a symbol
on the windshield as long as the time interval to
the vehicle ahead is shorter than the set time
interval.
Distance Alert is active at speeds above 30 km/h
(20 mph) and only reacts for vehicles ahead mov-
ing in the same direction as your vehicle. No dis-
tance information is provided for oncoming, slow-
moving or stationary vehicles. 33
Note: This illustration is general and details may vary depending on mod\
el.
34 Distance Alert

||DRIVER SUPPORT
* Option/accessory.
302
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. 295) Deactivating/reactivating Adaptive
Cruise Control
Adaptive Cruise Control (ACC
49
) 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.
49
Adaptive Cruise Control

DRIVER SUPPORT
* Option/accessory.
306 Automatic braking with Adaptive
Cruise Control
The Adaptive cruise control (ACC
55
) has a spe-
cial brake function in slow traffic and while sta-
tionary.
Braking function in slow traffic and at a
standstill
In slow-moving, stop-and-go traffic or when stop-
ped at a traffic light, driving will resume automati-
cally if the vehicle is stopped for less than
approx. 3 seconds. If it takes more than 3 sec-
onds for the vehicle ahead to begin moving again,
Adaptive Cruise Control will go into standby
mode and the Auto-hold brake function will acti-
vate.
– Adaptive Cruise Control can be reactivated in
one of the following ways:
• Pressing the button on the steering
wheel keypad.
• Pressing the accelerator pedal.
>

Adaptive Cruise Control will resume fol-
lowing the vehicle ahead if it begins to
move within approx. 6 seconds.
NOTE ACC can keep the vehicle stationary for no
more than 5 minutes – after that time the
parking brake is applied and Adaptive Cruise
Control is deactivated.
The parking brake must be released before
Adaptive Cruise Control can be reactivated.
Deactivation of the Auto-hold brake function
In certain situations, Auto-hold will be deactivated
when the vehicle is at a standstill and Adaptive
Cruise Control 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 sta-
tionary.
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 Adaptive Cruise Control 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 Adaptive Cruise Control is keeping
the vehicle stationary using the brakes and:
• the driver opens the door or unbuckles
his/her seat belt
• ACC has kept the vehicle at a standstill for
more than approx. 5 minutes
• the brakes overheat
• the driver switches off the engine manually.
Related information
•
Adaptive Cruise Control* (p. 295) 55
Adaptive Cruise Control

||DRIVER SUPPORT
* Option/accessory.
310 Symbol
Message MeaningThe symbol is WHITE.
The vehicle is maintaining the set speed.Adaptive cruise
Unavailable
The symbol is GRAY. Adaptive Cruise Control is in standby mode.Adaptive cruise
Service required
The symbol is GRAY. The system is not functioning as intended. Contact a workshop ‒ an authorized Volvo workshop is
recommended. Windscreen sensor
Sensor blocked, see Owner's manual
Clean the windshield in front of the camera and radar sensors.A text message can be erased by briefly pressing
the
button in the center of the right-side
steering wheel keypad.
If the message persists: Contact a workshop ‒ an
authorized Volvo workshop is recommended.
Related information
• Adaptive Cruise Control* (p. 295)

||DRIVER SUPPORT
* Option/accessory.
318 Controls for setting a time interval
65
. 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. Select one of the following:
• Eco - Pilot Assist will focus on providing
optimal fuel economy, which will increase the
time interval to the vehicle ahead.
• Comfort - Pilot Assist will focus on following
the set time interval to the vehicle ahead as
smoothly as possible.
• Dynamic - Pilot Assist will focus on follow-
ing the set time interval to the vehicle ahead
more exactly, which could mean faster accel-
eration and heavier braking.
For more information, see "Drive modes".
Related information
• Pilot Assist (p. 311) 65
Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
322Switching target vehicles with Pilot
Assist
At certain speeds, models with automatic trans-
missions and

Pilot Assist can switch target vehi-
cles.
Switching target vehicles If the target vehicle ahead turns suddenly, there may be
stationary traffic ahead.
When Pilot Assist is actively following another
vehicle at speeds under 30 km/h (20 mph) and
switches targets from a moving vehicle to a sta-
tionary vehicle,

Pilot Assist will brake for the sta-
tionary vehicle.
WARNING When Pilot Assist follows another vehicle at
speeds over approx. 30 km/h (20 mph) and
changes target vehicle – from a moving vehi-
cle to a stationary one – Pilot Assist will
ignore the stationary vehicle and instead
accelerate to the stored speed.
• The driver must then intervene and apply
the brakes.
Automatic standby mode when switching
targets
Pilot Assist disengages and goes into standby
mode if:
• your vehicle's speed goes below 5 km/h
(3 mph) and Pilot Assist cannot determine if
the target object is a stationary vehicle or
another object, e.g. a speed bump.
• your vehicle's speed goes under 5 km/h
(3 mph) and the vehicle ahead turns so that
Pilot Assist no longer has a vehicle to follow.
Related information
•Pilot Assist (p. 311) Automatic braking with Pilot Assist
Pilot Assist has a special braking function in
slow traffic and at a standstill.
Braking function in slow traffic and at a
standstill
In slow-moving, stop-and-go traffic or when stop-
ped at a traffic light, driving will resume automati-
cally if the vehicle is stopped for less than
approx. 3 seconds. If it takes more than 3 sec-
onds for the vehicle ahead to begin moving again,
Pilot Assist will go into standby mode and the
Auto-hold brake function will activate.
– Pilot Assist can be reactivated by:
• Pressing the button on the steering
wheel keypad.
• Pressing the accelerator pedal.
>

Pilot Assist will resume following the vehi-
cle ahead if it begins to move within
approx. 6 seconds.
NOTE Pilot Assist can keep the vehicle stationary
for no more than 5 minutes – after that time
the parking brake is applied and the function
is deactivated.
The parking brake must be released before
Pilot Assist can be reactivated.

||DRIVER SUPPORT
* Option/accessory.
324 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.
• 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.
Steep roads and/or heavy loadsPilot Assist is primarily intended to be driven on
flat roads. The function may not be able to main-
tain the correct time interval to the vehicle ahead
when driving down steep hills. The driver should be extra attentive and prepared to apply the
brakes.
• 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 the
vehicle 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 the
section "Camera unit limitations".
NOTE
The function uses the vehicle's radar unit,
which has some general limitations – see the
section "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*.

||DRIVER SUPPORT
* Option/accessory.
326 The previous illustration
69
shows that Pilot Assist
is set to maintain a speed of 110 km/h (68 mph)
and that there is no target vehicle ahead to fol-
low.
In this example, Pilot Assist will provide steering
assistance because it can detect the lane's side
marking lines.
Related information
• Pilot Assist (p. 311) Radar sensor
The radar sensor is used by several driver sup-
port systems to detect other vehicles. Note: This illustration is general and details may vary
depending on model.
The radar sensor is used by the following func-
tions:
• Distance Alert*
• Adaptive Cruise Control*
• Lane Keeping Aid
• Pilot Assist*
• City Safety
Any modifications to the radar sensor may make
its use illegal.
Related information
• Radar sensor limitations (p. 327)
• Recommended maintenance for the radar
sensor (p. 330)
• Radar sensor type approval (p. 330) 69
Note: This illustration is general and details may vary depending on mod\
el.