Volvo V90 Twin Engine (2018 year). Instruction — part 17
DRIVER SUPPORT
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297
The adaptive cruise control aims to control the
speed in a smooth way. In situations that demand
sudden braking the driver must brake himself/
herself. This applies in case of large speed differ-
ences or if the vehicle in front brakes suddenly.
Due to the limitations of the radar unit, braking
may come unexpectedly or not at all.
The adaptive cruise control aims to follow the
vehicle ahead in the same lane at a time interval
set by the driver. If the radar unit cannot see any
vehicle in front then the car will instead maintain
the speed set and stored by the driver. This also
takes place if the speed of the vehicle ahead
increases and exceeds the stored speed.
The following applies for cars with automatic
gearbox:
•
Adaptive cruise control can follow another
vehicle at speed from 0 km/h up to
200 km/h (125 mph).
The following applies for cars with manual gear-
box:
•
The Adaptive cruise control can follow
another vehicle at speeds from 30 km/h
(20 mph) 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 does not detect a vehicle ahead.
•
The adaptive cruise control does not
brake for humans or animals, and not for
small vehicles such as bicycles and
motorcycles. Nor for low trailers, oncom-
ing, slow or stationary vehicles and
objects.
•
Do not use the adaptive cruise control in
demanding situations, such as in city traf-
fic, at junctions, 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 slip roads.
Maintenance of adaptive cruise control com-
ponents must only be performed at a work-
shop - an authorised Volvo workshop is rec-
ommended.
Overview
Controls
Buttons and symbols for functions
31
.
: Activates the adaptive cruise control
from standby mode and resumes stored
speed
: Increases the stored speed
: From standby mode - activates the
adaptive cruise control and stores current
speed
: From active mode - deactivates/
changes the adaptive cruise control to
standby mode
: Reduces stored speed
Increases the time interval to vehicles ahead
31
NOTE: The illustration is schematic - details may vary depending on car model.
||
DRIVER SUPPORT
* Option/accessory.
298
Reduces the time interval to vehicles ahead
Target vehicle indicator: ACC has detected
and is following a target vehicle at the preset
time interval
Symbol for time interval to vehicles ahead
In cars equipped with Adaptive Cruise Con-
trol
*, it is possible to switch between cruise
control and Adaptive Cruise Control – see the
heading "Switch between CC and ACC".
Driver display
Indication of speeds
31
.
Stored speed
Speed of vehicle ahead.
Current speed of your car.
To see different combinations of symbols
depending on traffic situation - see the heading
"Symbols and messages for the adaptive cruise
control".
Collision risk warning
Audio and symbol for collision warning
31
Acoustic warning signal in the event of a risk
of collision
Warning signal in the event of a risk of colli-
sion
Distance measurement with the camera and
radar unit
Adaptive Cruise Control uses approx. 40% of the
capacity of the foot brake. If the car needs to be
braked more heavily than the adaptive cruise
control is capable of and the driver does not
brake, the warning lamp and acoustic warning are
activated to alert the driver that immediate inter-
vention is required.
31
NOTE: The illustration is schematic - details may vary depending on car model.
DRIVER SUPPORT
* Option/accessory.
299
WARNING
The adaptive cruise control only warns of
vehicles which its radar unit has detected -
hence a warning may not be given, or it may
be given with a certain delay.
•
Never wait for a warning. Apply the
brakes when the situation requires.
Head-up display
*
Symbol for collision warning on the windscreen
31
.
In cars equipped with a head-up display, the
warning is shown on the windscreen by a flashing
symbol.
Strong sunlight, reflections, extreme light con-
trasts, the use of sunglasses, or if the driver is
not looking straight ahead may make the vis-
ual warning signal in the windscreen difficult
to recognise.
Related information
•
Activating and starting the Adaptive cruise
control
•
Managing the speed of the Adaptive cruise
control
•
Setting the time interval for the adaptive
cruise control
•
Deactivating/activating the Adaptive cruise
control
•
Overtaking assistance with adaptive cruise
control
•
Change of target and automatic braking with
the Adaptive Cruise Control (p. 307)
•
Limitations of the adaptive cruise control
•
Change between Cruise control and adaptive
cruise control
•
Symbols and messages for the Adaptive
cruise control
•
•
31
NOTE: The illustration is schematic - details may vary depending on car model.
DRIVER SUPPORT
* Option/accessory.
300
Activating and starting the Adaptive
cruise control
*
Adaptive cruise control (ACC
32
) must first be
activated and then started if it is to control the
speed and distance.
Setting the adaptive cruise control in
standby mode
NOTE: The illustration is schematic - details may vary
depending on car model.
Immediately after the engine is started the Adap-
tive Cruise Control is in the standby mode. To set
it in standby mode from active mode, proceed as
follows:
–
Press steering wheel button
◀ (2) or ▶ (3) to
scroll to the symbol/function
(4).
> The symbol is displayed and Adaptive
Cruise Control is set in standby mode.
Starting/activating the adaptive cruise
control
In order to start the ACC the following require-
ments apply:
•
The driver's seatbelt must be buckled and
the driver's door must be closed.
•
There must be a vehicle (the "target vehicle")
within reasonable distance in front of the car,
or the current speed must be at least
15 km/h (9 mph).
•
For cars with manual gearbox. Speed must
be at the lowest 30 km/h (20 mph).
NOTE: The illustration is schematic - details may vary
depending on car model.
–
With the symbol/function
(4) displayed,
press the steering wheel button
(1).
> Adaptive cruise control starts and the cur-
rent speed is stored, which is shown in
figures in the centre of the speedometer.
The time interval is only
adjusted to the vehicle ahead
by the ACC when the distance
symbol shows two vehicles.
At the same time a speed
range is marked.
The higher speed is the
stored/selected speed and the
lower speed is that of the vehi-
cle ahead (target vehicle).
Related information
•
•
Managing the speed of the Adaptive cruise
control
•
Setting the time interval for the adaptive
cruise control
•
Deactivating/activating the Adaptive cruise
control
•
Overtaking assistance with adaptive cruise
control
32
Adaptive Cruise Control
DRIVER SUPPORT
}}
* Option/accessory.
301
•
Change of target and automatic braking with
the Adaptive Cruise Control (p. 307)
•
Limitations of the adaptive cruise control
•
Symbols and messages for the Adaptive
cruise control
•
Change between Cruise control and adaptive
cruise control
•
Managing the speed of the Adaptive
cruise control
*
The adaptive cruise control (ACC
33
) can be set
to different speeds.
Setting/changing the stored speed
NOTE: The illustration is schematic - details may vary
depending on car model.
–
Change the set speed with short or long
presses on steering wheel button
(1) or
(3):
•
Short press: Each press changes the
speed in increments of +/- 5 km/h
(+/- 5 mph).
•
Press and hold: Release the button when
the set speed indicator (4) has moved to
the desired speed.
•
The speed set after the last button press is
stored in the memory.
If the driver increases the car’s speed using the
accelerator pedal before pressing the steering
wheel button
, the speed stored will be the
car’s speed when the button is depressed, provi-
ded the driver’s foot is on the accelerator pedal at
the moment when the button is depressed.
A temporary increase in speed with the accelera-
tor pedal, e.g. during overtaking, does not affect
the setting - the car returns to the last stored
speed when the accelerator pedal is released.
Automatic gearbox
Adaptive cruise control can follow another vehicle
at speeds from 0 km/h up to 200 km/h
(125 mph).
Note that the lowest programmable speed for the
adaptive cruise control is 30 km/h (20 mph) -
even though it is capable of following another
vehicle down to 0 km/h, a speed lower than
30 km/h (20 mph) cannot be selected/stored.
The maximum speed selectable is 200 km/h
(125 mph).
33
Adaptive Cruise Control
||
DRIVER SUPPORT
* Option/accessory.
302
Manual gearbox
The Adaptive cruise control can follow another
vehicle at speeds from 30 km/h (20 mph) up to
200 km/h (125 mph).
The lowest programmable speed for the adaptive
cruise control is 30 km/h (20 mph) - the maxi-
mum speed is 200 km/h (125 mph).
Related information
•
•
Activating and starting the Adaptive cruise
control
•
Setting the time interval for the adaptive
cruise control
•
Deactivating/activating the Adaptive cruise
control
•
Overtaking assistance with adaptive cruise
control
•
Change of target and automatic braking with
the Adaptive Cruise Control (p. 307)
•
Limitations of the adaptive cruise control
•
Symbols and messages for the Adaptive
cruise control
•
Change between Cruise control and adaptive
cruise control
•
Setting the time interval for the
adaptive cruise control
*
The Adaptive Cruise Control (ACC
34
) can be
set to different time intervals.
Different time intervals to the
vehicle in front can be selected
and shown in the driver display
as 1-5 horizontal lines - the
more lines the longer the time
interval. One line represents
about 1 second to the vehicle
in front, 5 lines represents about 3 seconds.
The same symbol is also shown when the Dis-
tance Warning function is activated.
When the symbol in the driver display shows
two cars, ACC is following the vehicle in front
at a pre-set time interval.
When only one car is shown, there is no vehi-
cle within a reasonable distance ahead.
Control for time interval.
Decrease time interval
Increase time interval
Distance indicator
–
Press the steering wheel button (1) or (2) to
increase or decrease the time interval.
> The distance indicator (3) shows the cur-
rent time interval.
The adaptive cruise control allows the time inter-
val to vary significantly in certain situations in
order to allow the car to follow the vehicle in front
smoothly and comfortably. At low speed, when
the distances are short, the adaptive cruise con-
trol increases the time interval slightly.
34
Adaptive Cruise Control
DRIVER SUPPORT
* Option/accessory.
303
•
The higher the speed the longer the cal-
culated distance in metres for a given
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 window to the vehicle ahead is
shorter than the set time window.
WARNING
•
Only use a time window that suits the
current traffic conditions.
•
The driver should be aware that short
time windows limit the amount of time
available to react and take action if an
unexpected traffic situation arises.
Select how ACC shall maintain the
distance
* to the vehicle ahead
The driver can select different driving styles for
how the Adaptive cruise control should maintain
the preset time interval to the vehicle ahead.
Selection is made via the drive mode control
DRIVE MODE.
Select one of the following alternatives:
•
Eco
- ACC focuses on optimal fuel economy,
which means longer time interval to the vehi-
cle ahead.
•
Comfort
- ACC focuses on following the set
time interval to the vehicle ahead as
smoothly as possible.
•
Dynamic
- ACC focuses on following the set
time interval to the vehicle ahead more
closely, which in certain cases may mean
heavier acceleration and braking.
See further information in the "Drive modes" sec-
tions.
Related information
•
•
Activating and starting the Adaptive cruise
control
•
Managing the speed of the Adaptive cruise
control
•
Deactivating/activating the Adaptive cruise
control
•
Overtaking assistance with adaptive cruise
control
•
Change of target and automatic braking with
the Adaptive Cruise Control (p. 307)
•
Limitations of the adaptive cruise control
•
Symbols and messages for the Adaptive
cruise control
•
Change between Cruise control and adaptive
cruise control
•
•
DRIVER SUPPORT
* Option/accessory.
304
Deactivating/activating the Adaptive
cruise control
*
The Adaptive cruise control (ACC
35
) can be
temporarily deactivated so that it is set in the
standby mode and can later be reactivated.
Deactivate Adaptive Cruise Control and
set it in standby mode
NOTE: The illustration is schematic - details may vary
depending on car model.
To temporarily switch off Adaptive Cruise Control
and set it in standby mode:
–
Press the steering wheel button
(2).
> The
symbol on the driver display
changes colour from WHITE to GREY and
the stored speed in the centre of the
speedometer changes from BEIGE to
GREY.
WARNING
•
With the adaptive cruise control is in
standby mode, the driver must intervene
and regulate both speed and distance to
the vehicle ahead.
•
When the adaptive cruise control is in
standby mode and the car comes too close
to a vehicle ahead, the driver is warned of
the short distance by the Distance Warn-
ing function instead.
Standby mode on driver intervention
The Adaptive cruise control is temporarily deacti-
vated and set in standby mode if:
•
the foot brake is used
•
the gear selector is moved to N position.
•
the driver maintains a speed higher than the
stored speed for longer than 1 minute.
•
the clutch pedal is depressed for approx. 1
minute - applies to cars with manual gearbox.
A temporary increase in speed with the accelera-
tor pedal, e.g. during overtaking, does not affect
the setting - the car returns to the last stored
speed when the accelerator pedal is released.
35
Adaptive Cruise Control
DRIVER SUPPORT
* Option/accessory.
305
Automatic standby mode
The adaptive cruise control is dependent on
other systems, e.g. Electronic Stability Control
ESC
36
. If any of the other systems stops working,
the adaptive cruise control is deactivated auto-
matically.
WARNING
With automatic standby mode, the driver is
warned via an acoustic signal and a message
on the driver display.
•
The driver must then regulate the car's
speed, apply the brakes as needed and
maintain a safe distance to other vehicles.
Automatic standby mode may occur if:
•
the speed is below 5 km/h (3 mph) and ACC
is uncertain whether the vehicle ahead is a
stationary vehicle or an object, such as a
speed bump.
•
the speed is below 5 km/h (3 mph) and the
vehicle ahead turns off so that ACC no
longer has a vehicle to follow.
•
speed is reduced to below 30 km/h
(20 mph) - only applies to cars with manual
gearbox.
•
the driver opens the door
•
the driver takes off the seatbelt
•
engine speed is too low/high
•
one or more wheels lose traction
•
brake temperature is high
•
the parking brake is applied
•
the camera and radar unit is covered by e.g.
snow or heavy rainfall (camera lens/radio
waves are blocked).
Reactivating adaptive cruise control
from standby mode
NOTE: The illustration is schematic - details may vary
depending on car model.
To reactivate ACC from standby mode:
–
Press the steering wheel button
(1).
> The speed is then set to the most recently
stored speed.
WARNING
A significant increase in speed may follow
when the speed is resumed with the
steering wheel button.
Related information
•
•
Activating and starting the Adaptive cruise
control
•
Managing the speed of the Adaptive cruise
control
•
Setting the time interval for the adaptive
cruise control
•
Overtaking assistance with adaptive cruise
control
•
Change of target and automatic braking with
the Adaptive Cruise Control (p. 307)
•
Limitations of the adaptive cruise control
•
Symbols and messages for the Adaptive
cruise control
•
Change between Cruise control and adaptive
cruise control
•
•
Electronic Stability Control ESC (p. 276)
36
Electronic Stability Control
DRIVER SUPPORT
* Option/accessory.
306
Overtaking assistance with adaptive
cruise control
* or Pilot Assist*
Adaptive cruise control (ACC
37
) or Pilot Assist
can assist the driver when overtaking other vehi-
cles.
How overtaking assistance works
When ACC or Pilot Assist is following another
vehicle and the driver indicates the intention to
overtake by activating the direction indicator
38
,
adaptive cruise control or Pilot Assist helps by
accelerating the car towards the vehicle ahead
before the car reaches the overtaking lane.
The function then delays reducing speed in order
to avoid premature braking when the driver’s car
is approaching a slower vehicle.
The function remains active until the driver’s vehi-
cle has cleared the overtaken vehicle.
WARNING
Be aware that this function can be activated
in more situations than during overtaking, e.g.
when a direction indicator is used to indicate
a change of lane or exit to another road – the
car will then accelerate briefly.
Continuation for Overtaking Assistance
The following conditions must exist for Overtak-
ing Assistance to be activated:
•
there must be a vehicle in front (the “target
vehicle”)
•
your car's current speed is at least 70 km/h
(43 mph)
•
the stored speed for ACC or Pilot Assist
must be high enough for overtaking to take
place safely.
Starting Overtaking Assistance
To start the Overtaking Assistance:
–
Activate the direction indicator.
Use the left direction indicator in a car with
the steering wheel on the left, or the right
direction indicator in a car with the steering
wheel on the right.
> Overtaking Assistance is started.
Limitations for Overtaking Assistance
WARNING
When using the Overtaking Assistance Sys-
tem, the driver should be aware that there
may be undesired acceleration if the condi-
tions suddenly change.
Some situations should therefore be avoided,
such as if:
•
the car is approaching an exit for turn-of
that is in the same direction as overtaking
would normally occur.
•
the vehicle ahead slows down before the
driver's car has crossed over into the
overtaking lane
•
the traffic in the overtaking lane slows
down
•
a right-hand drive car is driven in a county
with left-hand traffic (or vice versa).
Situations of this kind can be avoided by tempo-
rarily setting ACC or Pilot Assist in standby mode.
Related information
•
•
37
Adaptive Cruise Control
38
On left flash only in left-hand-drive car, or right flash in right-hand-drive car.
DRIVER SUPPORT
}}
307
Change of target and automatic
braking with the Adaptive Cruise
Control
In combination with automatic gearbox, the
adaptive cruise control (ACC
39
) has functionality
for change of target and braking at certain
speeds.
Change of target
If the target vehicle in front suddenly turns then there
may be stationary traffic in front.
When adaptive cruise control is following another
vehicle at speeds below 30 km/h (20 mph) and
changes target from a moving to a stationary
vehicle, the adaptive cruise control will slow down
for the stationary vehicle.
WARNING
When the adaptive cruise control is following
another vehicle at speeds in excess of
approx. 30 km/h (20 mph) and the target is
changed from a moving vehicle to a stationary
vehicle, the adaptive cruise control will ignore
the stationary vehicle and instead accelerate
to the stored speed.
•
The driver must then intervene him/
herself and brake.
Automatic standby mode with change of
target
The adaptive cruise control is disengaged and set
in standby mode:
•
when the speed is below 5 km/h (3 mph)
and the adaptive cruise control is uncertain
whether the target object is a stationary vehi-
cle or some other object, such as a speed
bump.
•
when the speed is below 5 km/h (3 mph)
and the vehicle ahead turns off so the adap-
tive cruise control no longer has a vehicle to
follow.
Automatic braking
For shorter stops in connection with inching in
slow traffic or at traffic lights driving is automati-
cally resumed if the stops do not exceed about
3 seconds - if it takes longer before the car in
front starts moving again then the adaptive cruise
control is set in standby mode with automatic
braking.
–
The Adaptive Cruise Control is reactivated in
one of the following ways:
•
Press the steering wheel button
.
•
Depress the accelerator pedal.
> The Adaptive Cruise Control resumes fol-
lowing the vehicle ahead if it starts mov-
ing forward within 6 seconds.
ACC can keep the car stationary for a maxi-
mum of 5 minutes. After this the parking
brake is applied and adaptive cruise control is
disengaged.
The parking brake must be released before
the adaptive cruise control can be reactivated.
39
Adaptive Cruise Control
||
DRIVER SUPPORT
* Option/accessory.
308
Cessation of automatic braking
In some situations, automatic braking ceases on
reaching 0 km/h and Adaptive Cruise Control is
set in standby mode. This means that the brakes
are released and the car may start to roll - the
driver must therefore intervene and brake the car
himself/herself to keep it stationary.
This may take place in the following situations:
•
the driver puts his/her foot on the brake
pedal
•
the parking brake is applied
•
the gear selector is moved to P, N, or R posi-
tion
•
the driver sets the adaptive cruise control in
the standby mode.
Automatic activation of parking brake
In certain situations the parking brake is applied
to keep the car stationary.
This takes place if the adaptive cruise control is
holding the car stationary with the foot brake and:
•
the driver opens the door or takes off his/her
seatbelt
•
ACC has kept the car stationary for more
than approx. 5 minutes
•
the brakes have overheated
•
the engine is switched off.
Related information
•
•
Automatic braking when stationary (p. 434)
•
Limitations of the adaptive cruise
control
*
Adaptive cruise control (ACC
40
) may have limita-
tions in certain situations.
Steep roads and/or heavy load
Bear in mind that the adaptive cruise control is
primarily intended for use when driving on level
road surfaces. The function may have difficulty in
keeping the correct distance from the vehicle
ahead when driving on steep downhill slopes - in
which case, be extra attentive and ready to brake.
•
Do not use adaptive cruise control if the car
has a heavy load or a trailer is connected to
the car.
Miscellaneous
•
Drive mode
Off Road
cannot be selected
when the adaptive cruise control is activated.
The function uses the car's camera unit,
which has some general limitations, see the
"Limitations for camera unit" section.
The function uses the car's radar unit, which
has some general limitations, see the section
"Limitations for radar unit".
40
Adaptive Cruise Control
DRIVER SUPPORT
}}
* Option/accessory.
309
Related information
•
Limitations of the camera unit (p. 339)
•
Limitations of the radar unit (p. 330)
•
•
Activating and starting the Adaptive cruise
control
•
Managing the speed of the Adaptive cruise
control
•
Setting the time interval for the adaptive
cruise control
•
Deactivating/activating the Adaptive cruise
control
•
Overtaking assistance with adaptive cruise
control
•
Change of target and automatic braking with
the Adaptive Cruise Control (p. 307)
•
Change between Cruise control and adaptive
cruise control
•
Symbols and messages for the Adaptive
cruise control
Change between Cruise control and
adaptive cruise control
*
In a car with Adaptive Cruise Control (ACC
41
)
the driver can change between Cruise Control
(CC
42
) and ACC.
A symbol in the driver display shows which cruise
control is active:
CC
ACC
A
A
Cruise control
Adaptive cruise control
A
WHITE symbol: Function active, GREY symbol: Standby mode
Changing from ACC to CC
Proceed as follows:
1. Set adaptive cruise control to standby mode
using steering wheel button
.
2. Press the
Cruise control
button in the cen-
tre display's function view - the button's indi-
cator changes colour from GREY to GREEN.
> The symbol in the driver display changes
from
ACC to
CC. Adap-
tive Cruise Control is now switched off
and Cruise Control is set to standby
mode.
3. Press the steering wheel button
.
> Cruise control starts and stores the cur-
rent speed.
WARNING
Switching from ACC to CC means that the
car:
•
no longer maintains a preset time interval
to the vehicle ahead.
•
only follows the stored speed, and the
driver must therefore apply the brakes
when necessary.
If CC is active when the engine is switched off,
ACC will be activated automatically the next time
the engine is started.
Changing from CC to ACC
Proceed as follows:
1. Set cruise control to standby mode using the
steering wheel button.
41
Adaptive Cruise Control
42
Cruise Control
||
DRIVER SUPPORT
* Option/accessory.
310
2. Tap on the
Cruise control
button in the
function view - the button's indicator
changes colour from GREEN to GREY.
> The symbol in the driver display changes
from
CC to
ACC. Adap-
tive Cruise Control is now activated and
set to standby mode.
3. Press the steering wheel button
.
> Adaptive cruise control starts and stores
the current speed, together with the pre-
set time interval to the vehicle ahead.
Related information
•
•
DRIVER SUPPORT
}}
* Option/accessory.
311
Symbols and messages for the
Adaptive cruise control
*
A number of symbols and messages regarding
the adaptive cruise control (ACC
43
) can be
shown via the driver display and/or the head-up
display
*.
Here are some examples
44
.
The previous illustration
45
shows that the adap-
tive cruise control is set to maintain 110 km/h
(68 mph) and that there is no vehicle ahead to
follow.
The previous illustration
45
shows that the adap-
tive cruise control is set to maintain 110 km/h
(68 mph) and at the same time is following a
vehicle ahead which is keeping the same speed.
43
Adaptive Cruise Control
44
In the following illustrative example, the RSI (Road Sign Information) function informs the driver that the maximum permitted speed is 130 km/h (80 mph).
45
NOTE: The illustration is schematic - details may vary depending on car model.
||
DRIVER SUPPORT
* Option/accessory.
312
Symbol
Message
Specification
The symbol is WHITE
The car is maintaining the stored/selected speed.
Adaptive cruise
Unavailable
The symbol is GREY.
Adaptive cruise control is set to standby mode.
Adaptive cruise
Service required
The symbol is GREY.
The system does not function as it should. A workshop should be contacted - an authorised Volvo
workshop is recommended.
Windscreen sensor
Sensor blocked, see Owner's manual
Clean the windscreen in front of the camera and radar unit's detectors.
A text message can be cleared by briefly press-
ing the
button, located in the centre of the
steering wheel's right-hand keypad.
If a message remains: Contact a workshop – an
authorised Volvo workshop is recommended.
Related information
•
•
•
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