2019 VOLVO XC90 TWIN ENGINE ECO mode

DRIVER SUPPORT
}}
* 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.

||DRIVER SUPPORT
324
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. 316)
Drive modes (p. 454)
Managing Cruise Control speed (p. 293) Deactivating/reactivating Pilot
Assist
Pilot Assist
can be temporarily put into standby
mode and then reactivated.
Deactivating and putting Pilot Assist in
standby mode Note: This illustration is general and details may vary
depending on model.
To temporarily deactivate Pilot Assist and put it in
standby mode:
–
Press the button on the steering wheel
(2).
>

Pilot Assist goes into standby mode - the
symbol (8) in the instrument panel
changes color from WHITE to GRAY and
the set speed in the center of the speed-
ometer will change from BEIGE to GRAY.
...or... –
Press the ◀ button on the steering wheel (3).
>

Pilot Assist is turned off and Adaptive
Cruise Control will go into active mode.
WARNING
With Pilot Assist in standby mode, the
driver must intervene and steer and regu-
late both speed and distance to the vehi-
cle ahead.
If the vehicle comes too close to a vehicle
ahead when Pilot Assist is in standby
mode, the driver is instead warned of the
short distance by the Distance Alert func-
tion.

||DRIVER SUPPORT
328
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. 316) Auto-hold 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.
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. 316)

||DRIVER SUPPORT
* Option/accessory.
332 The previous illustration
64
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.
Pilot Assist will provide steering assistance
because it can detect the lane's side marking
lines.
Related information
Pilot Assist (p. 316) 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. 333)
Recommended maintenance for the radar
sensor (p. 336)
Radar sensor type approval (p. 336) 64
Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
* Option/accessory.337
Camera
The camera is used by several driver support
systems to e.g. detect lane marker lines or road
signs. Note: This illustration is general and details may vary
depending on model.
The camera is used by the following functions:
Adaptive Cruise Control*
Pilot Assist*
Lane Keeping Aid*
Steering assistance at risk of collision
City Safety
Driver Alert Control*
Road Sign Information*
Active high beams*
Related information
Camera limitations (p. 338)
Recommended maintenance for the camera/
radar sensor (p. 341)

DRIVER SUPPORT
* Option/accessory.
372 Selecting guidance to a rest area if
the Driver Alert Control warning has
been given
The Rest Stop Guidance function can be
switched on or off.
In vehicles equipped with Sensus Navigation*, the
driver can activate a guide that can automatically
suggest a suitable rest stop if the DAC warning
is given.
To select Rest Stop Guidance:
1. Tap Settings in the center display's Top
view.
2.

Select My Car IntelliSafe Driver Alert
Control .
3. Select/deselect Rest Stop Guidance to
activate/deactivate the function.
Related information
Driver Alert Control (p. 370) Driver Alert Control limitations
Driver Alert Control (DAC) functionality may be
reduced in certain situations.
In certain situations, the system may provide a
warning even if it has not detected a change in
driving behavior, e.g.:
in strong crosswinds
on grooved road surfaces.
WARNING In certain cases, driving behavior might not be
affected despite the driver's fatigue – when
using the Pilot Assist function – resulting in
the driver not getting a warning from DAC.
It is therefore very important to always stop
and take a break at the slightest sign of fati-
gue, regardless of whether the DAC function
has issued a warning or not.
NOTE
The function uses the vehicle's camera unit,
which has some general limitations – see the
section "Camera unit limitations".
Related information

Driver Alert Control (p. 370)
Camera limitations (p. 338) Lane Keeping Aid
Lane Keeping Aid (LKA 104
) is designed to
actively steer the vehicle on freeways, highways
and other major roads to help the driver reduce
the risk of the vehicle unintentionally veering out
of the lane.
Lake Keeping Assistance steers the vehicle back
into the lane and/or alerts the driver using vibra-
tions in the steering wheel.
Lane Keeping Aid is active at speeds between
65-200 km/h (40-125 mph) on roads with
clearly visible traffic lane marker lines.
On narrow roads, the function may be unavailable
and go into standby mode. The function will
become available again when the road becomes
sufficiently wide. A camera monitors the road/traffic lane's marker lines.
104
Lane Keeping Aid

DRIVER SUPPORT
}}
377
Lane Keeping Aid symbols and
messages
A number of symbols and messages related to
Lane Keeping Aid LKA 110
may be displayed in
the instrument panel. Some examples of symbols and messages are shown in the table below. Symbol
Message MeaningDriver support system
Reduced functionality Service required
The system is not functioning as intended. Contact a workshop ‒ an authorized Volvo work-
shop is recommended. Windscreen sensor
Sensor blocked, see Owner's manual
The camera's ability to detect the lane in front of the vehicle is re\
duced.Lane Keeping Aid
Apply steering
LKA's steering assistance is disabled when the driver's hands are \
not on the wheel. Follow
the instructions and steer the vehicle.Lane Keeping Aid
Apply steering
LKA will go into standby mode until the driver begins steering the vehic\
le again.110
Lane Keeping Aid

HYBRID INFORMATION
416General information about Twin
Engine
Twin Engine vehicles are driven just like any
other vehicle, but certain functions differ from a
vehicle powered exclusively by gasoline. The
electric motor powers the vehicle primarily at low
speeds; the gasoline engine is used at higher
speeds or during more active driving.
The instrument panel displays Twin Engine-spe-
cific information - charging information, selected
drive mode, distance to discharged battery and
hybrid battery charge level.
Different drive modes can be selected while driv-
ing, e.g. electric power only or, if more power is
needed, a combination of electric and gasoline
power. The vehicle calculates the optimal combi-
nation of driveability, driving experience, environ-
mental impact and fuel economy for the selected
drive mode.
In order to function optimally, the hybrid battery
(and its electrical drive systems) and the gasoline
engine (and its drive systems) must be at the
correct operating temperature. Battery capacity
can be considerably reduced if the battery is too
cold or too hot. Preconditioning prepares the
vehicle's drive systems and passenger compart-
ment before driving to help reduce both wear and
energy consumption. It also helps increase the
hybrid battery's range.
The hybrid battery which powers the electric
motor is recharged using the charging cable. It can also be recharged during light braking and
through engine braking in gear position B. The
combustion engine can also help recharge the
hybrid battery.
Important
No electrical current
Keep in mind that if there is no electrical current
to the vehicle, i.e. the ignition is switched off or
the start battery is discharged, certain functions
such as brakes, power steering, etc. will not work.
WARNING If the vehicle does not have electrical current
and both the electric motor and the gasoline
engine are switched off, the brakes cannot be
used to stop the vehicle.
Towing not permitted
Never tow a Twin Engine vehicle behind another
vehicle, as this could damage the electric motor.
Exterior engine noise
WARNING
Please be aware that there is no sound from
the engine when the vehicle is being powered
by the electric motor and it may be difficult to
detect by children, pedestrians, cyclists and
animals. This is especially true at low speeds.
High-voltage electrical current
WARNING A number of electrical components in Twin
Engine Plug-in Hybrid vehicles use high-volt-
age current and can be extremely dangerous
if handled incorrectly. These components and
any orange wiring in the vehicle may only be
handled by trained and qualified Volvo service
technicians.
Do not touch anything that is not clearly descri-
bed in this Owner's Manual.
Related information
Charging the hybrid battery (p. 417)
Hybrid gauge (p. 87)
Drive modes (p. 454)
Starting and stopping preconditioning
(p. 233)
Hybrid battery (p. 631)
Factors affecting electric motor range
(p. 469)