brakes VOLVO XC90 TWIN ENGINE 2019 User Guide
[x] Cancel search | Manufacturer: VOLVO, Model Year: 2019, Model line: XC90 TWIN ENGINE, Model: VOLVO XC90 TWIN ENGINE 2019Pages: 697, PDF Size: 10.33 MB
Page 282 of 697
||DRIVER SUPPORT
* Option/accessory.
280
WARNING
The Electronic Stability Control system
ESC is supplementary driver support
intended to facilitate driving and make it
safer – it cannot handle all situations in
all traffic, weather and road conditions.
ESC 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.
Stability control 3This function helps control the driving and brak-
ing force of each individual wheel in an attempt
to stabilize the vehicle.
Spin control and active yaw controlThis function is active at low speeds and brakes
the wheels that are spinning to transfer additional
power 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 or
using engine braking when driving at low speeds
on 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 the
vehicle and trailer have begun to sway. For more
information, see "Trailer Stability Assist".
NOTE The TSA function is deactivated if
ESC Sport
Mode is activated.
Related information
Electronic Stability Control Sport mode
(p. 281)
Activating/deactivating Sport mode in Elec-
tronic Stability Control (p. 281)
Electronic Stability Control Sport mode limi-
tations (p. 281)
Electronic Stability Control symbols and mes-
sages (p. 282)
Trailer Stability Assist* (p. 485)
3
Also called traction control.4 Engine Drag Control5Trailer Stability Assist is included if the vehicle is equipped with a V\
olvo original towbar.6 Trailer Stability Assist
Page 284 of 697
DRIVER SUPPORT
282Electronic Stability Control symbols
and messages
A number of symbols and messages related to
Electronic Stability Control (ESC) may be dis-
played in the instrument panel. Some examples of symbols and messages are
shown in the table below.Symbol
Message MeaningSteady glow for
approx. 2 seconds.
System check when the engine is started.Flashing light.
The ESC is actively operating.Steady glow.
Sport mode is activated.
Note: The ESC system is not deactivated in this mode, but has partially reduc\
ed functionality. ESC
Temporarily off
The ESC system's functionality has been temporarily reduced due to hi\
gh brake system temperatures. The
function will be automatically reactivated when the brakes have cooled.
See the message in the instrument panel.ESC
Service required
The ESC system is not functioning properly.
Stop the vehicle in a safe place, turn off the engine and then restart i\
t.
Consult a workshop if the message persists ‒ an authorized Volvo workshop is recommended. 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
Electronic Stability Control (p. 279)
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294
For vehicles with both CC and ACC
–
Change a set speed by pressing the (1)
or (3) buttons briefly or by pressing and
holding them:
Press briefly: Press briefly: each press
changes the speed in +/- 5 mph
(+/- 5 km/h) increments.
Press and hold: release the button when
the set speed indicator (4) has moved to
the desired speed.
The most recently set speed will be stored.
If speed is increased by depressing the accelera-
tor pedal while pressing the (1) button on
the steering wheel, the vehicle's speed when the
button is pressed will be stored as the set speed.
Temporarily increasing speed using the accelera-
tor pedal, e.g. when passing another vehicle, will
not affect the setting. The vehicle will return to
the set speed when the accelerator pedal is
released.
Using engine braking instead of
applying the brakes
Cruise Control regulates speed by lightly applying
the brakes. On downgrades, it can sometimes be
desirable to roll a bit faster and let speed be
reduced instead by engine braking alone. The
driver can temporarily disengage the Cruise Con-
trol braking function. To disengage CC:
– Press the accelerator pedal about halfway
down and then release it.
>
Cruise Control will automatically disen-
gage the automatic brake function and
speed will only be reduced using the
engine braking function.
How drive mode affects cruise controlThe way the cruise control maintains the vehicle's
speed can vary depending on the selected drive
mode 26
.
Cruise Control Eco Cruise with ECO drive
mode
In the ECO drive mode, cruise control's accelera-
tion and deceleration will be smoother than in
other drive modes to help provide optimal fuel
efficiency and reduced environmental impact.
Because of this, the vehicle's actual speed may
be slightly above or below the set speed.
Cruise Control Dynamic Cruise
With the Dynamic drive mode, cruise control's
acceleration and deceleration will be faster and
more immediate than in other drive modes.
Related information
Cruise control (p. 291)
Drive modes (p. 454) Deactivating and putting Cruise
Control in standby mode
Cruise Control (CC 27
) can be temporarily put
into standby mode and then reactivated.
Deactivating and putting Cruise Control
in standby mode Note: This illustration is general and details may vary
depending on model.
To put Cruise Control in standby mode:
–
Press the button on the steering wheel
(2).
>
The Cruise Control markings and symbols
will change from WHITE to GRAY, indicat-
ing that Cruise Control is temporarily
deactivated and the driver needs to con-
trol the vehicle's speed. 26
For more information, see "Drive modes".
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DRIVER SUPPORT
295
Standby mode due to action by the driver
Cruise Control will be temporarily deactivated and
put in standby mode if: the brakes are applied
the gear selector is moved to N
the vehicle is driven faster than the set
speed for more than 1 minute
The driver must then control the vehicle's speed.
Temporarily increasing speed using the accelera-
tor pedal, e.g. when passing another vehicle, will
not affect the setting. The vehicle will return to
the set speed when the accelerator pedal is
released.
Automatic standby mode
Cruise Control will be temporarily deactivated and
put in standby mode if:
the wheels lose traction
the engine speed (rpm) is too low/high
the temperature in the brake system
becomes too high
the vehicle's speed goes below 30 km/h
(20 mph).
The driver must then control the vehicle's speed.
Related information
Cruise control (p. 291) Reactivating Cruise Control from
standby mode
Cruise Control (CC 28
) can be temporarily put
into standby mode and then reactivated.
Reactivating Cruise Control from
standby mode Note: This illustration is general and details may vary
depending on model.
To start Cruise Control from standby mode:
–
Press the button on the steering wheel
(1).
>
The Cruise Control marking in the instru-
ment panel will change from GRAY to
WHITE and the vehicle will then return to
the most recently set speed. or
To start Cruise Control from standby mode:
– Press the button on the steering wheel
(2).
>
The Cruise Control markings and symbols
in the instrument panel will change from
GRAY to WHITE and the vehicle's current
speed will be set.
WARNING A noticeable increase in speed may follow
when the speed is resumed with the
steering wheel button.
Related information
Cruise control (p. 291) 27
Cruise Control
28 Cruise Control
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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.
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* Option/accessory.303
Managing Adaptive Cruise Control speed
(p. 305)
Setting Adaptive Cruise Control time inter-
vals (p. 306)
Deactivating/reactivating Adaptive Cruise
Control (p. 307)
Passing assistance with Adaptive Cruise
Control (p. 309)
Starting passing assistance with Adaptive
Cruise Control (p. 310)
Limitations of passing assistance with Adap-
tive Cruise Control (p. 310)
Switching target vehicles with Adaptive
Cruise Control (p. 310)
Automatic braking with Adaptive Cruise Con-
trol (p. 311)
Adaptive Cruise Control limitations (p. 312)
Switching between Cruise Control and Adap-
tive Cruise Control (p. 313)
Symbols and messages for Adaptive Cruise
Control (p. 314) Adaptive Cruise Control and
collision warning
Adaptive Cruise Control can alert the driver if the
distance to the vehicle ahead suddenly decrea-
ses to an unsafe distance.
Collision warning light on the windshield
40
. Audio-visual collision warning
Camera/radar sensor distance monitoring
Adaptive Cruise Control utilizes approx. 40% of
the vehicle's braking capacity. If a situation
requires more braking force than the Adaptive
Cruise Control can provide, and if the driver does
not apply the brakes, a warning light and audible
warning signal will be activated to alert the driver
that immediate action is required.
NOTE Visual warnings on the windshield may be dif-
ficult to notice in cases of strong sunlight,
reflections, extreme light contrasts, or if the
driver is wearing sunglasses or is not looking
straight ahead.
WARNING
Adaptive Cruise Control only issues a warning
for vehicles detected by its radar unit – thus, a
warning may come after a delay or not at all.
Never wait for a warning. Apply the
brakes when necessary.
Related information
Adaptive Cruise Control* (p. 300) 40
Note: This illustration is general and details may vary depending on mod\
el.
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308
To temporarily deactivate Adaptive Cruise Control
and put it in standby mode:
– Press the button on the steering wheel
(2).
> The symbol 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.
WARNING
If Adaptive Cruise Control is in standby
mode, the driver must intervene and regu-
late both speed and distance to the vehicle
ahead.
If the vehicle comes too close to a vehicle
ahead when Adaptive Cruise Control is in
standby mode, the driver is instead warned
of the short distance by the Distance Alert
function.
Standby mode due to action by the driver
Adaptive Cruise Control will be temporarily deac-
tivated and put in standby mode if:
the brakes are applied
the gear selector is moved to N
the vehicle is driven faster than the set
speed for more than 1 minute Temporarily increasing speed using the accelera-
tor pedal, e.g. when passing another vehicle, will
not affect the setting. The vehicle will return to
the set speed when the accelerator pedal is
released.
Automatic standby mode
Adaptive Cruise Control is dependent on other
systems, such as Electronic Stability Control
(ESC
47
). If any of these other systems stops
working, Adaptive Cruise Control will automati-
cally switch off.
WARNING With automatic standby mode, the driver is
warned by an acoustic signal and a message
on the instrument panel.
The driver must then regulate vehicle
speed, apply the brakes if necessary, and
maintain a safe distance to other vehicles.
Adaptive Cruise Control may go into standby
mode if: your vehicle's speed goes below 5 km/h
(3 mph) and ACC cannot determine if the
vehicle ahead is stationary or if it is 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
ACC no longer has a vehicle to follow.
the driver opens the door.
the driver unbuckles the seat belt.
the engine speed (rpm) is too low/high.
one or more of the wheels lose traction.
the brake temperature is high.
the parking brake is applied.
the camera/radar sensor is covered by snow
or heavy rain (the camera lens/radar waves
are blocked)
Reactivating Adaptive Cruise Control
from standby mode Note: This illustration is general and details may vary
depending on model.
47
Electronic Stability Control
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DRIVER SUPPORT
}}
* Option/accessory. 311
WARNINGWhen Adaptive Cruise Control follows another
vehicle at speeds over approx. 30 km/h
(20 mph) and changes target vehicle – from a
moving vehicle to a stationary one – Adaptive
Cruise Control will ignore the stationary vehi-
cle and instead accelerate to the stored
speed.
The driver must then intervene and apply
the brakes.
Automatic standby mode when switching
targets
Adaptive Cruise Control will be disabled and go
into standby mode:
if your vehicle's speed goes below 5 km/h
(3 mph) and Adaptive Cruise Control cannot
determine if the target object is a stationary
vehicle or another object, e.g. a speed bump.
if your vehicle's speed goes under 5 km/h
(3 mph) and the vehicle ahead turns so that
Adaptive Cruise Control no longer has a vehi-
cle to follow.
Related information
Adaptive Cruise Control* (p. 300) Automatic braking with Adaptive
Cruise Control
The Adaptive cruise control (ACC
52
) 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. 51
Adaptive Cruise Control
52 Adaptive Cruise Control
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* Option/accessory.
312 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. 300) Adaptive Cruise Control limitations
Adaptive Cruise Control (ACC 53
) 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 be
able to maintain 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 Adaptive Cruise Control if the
vehicle is carrying a heavy load or towing a
trailer.
Other limitations
The
Off Road drive mode cannot be
selected if Adaptive Cruise Control is acti-
vated.
NOTE The function uses the vehicle's combined
camera and radar unit, which has certain gen-
eral limitations; see sections "Camera limita-
tions" and "Radar sensor limitations".
Related information
Adaptive Cruise Control* (p. 300)
Camera limitations (p. 338)
Radar sensor limitations (p. 333) 53
Adaptive Cruise Control
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DRIVER SUPPORT
* Option/accessory.313
Switching between Cruise Control
and Adaptive Cruise Control
In vehicles equipped with Adaptive Cruise Con-
trol (ACC), the driver can switch between Cruise
Control (CC) and ACC.
A symbol in the instrument panel indicates which
cruise control system is active CC
ACCA A
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.
2. Tap the Cruise Control button in the center
display's Function view. The button's indica-
tor will change from GRAY to GREEN.
>
The symbol in the instrument panel will
change from ACC to
CC, indicating that Adaptive Cruise Con-
trol is off and Cruise Control is in standby
mode. 3.
Pressing the button on the steering
wheel keypad.
>
Cruise Control will start and the vehicle's
current speed will be set.
WARNING Switching from ACC to CC means that the
vehicle:
will no longer maintain a preset time
interval to the vehicle ahead.
will only follow the stored speed and the
driver must therefore apply the brakes
when necessary.
If CC is active when the engine is turned off, ACC
will be automatically activated the next time the
engine is started.
Switching from CC to ACCTo do so:
1. Press the button on the steering wheel
keypad to put Cruise Control in standby
mode. 2.
Tap the Cruise Control button in Function
view. The button's indicator will change from
GREEN to GRAY.
>
The symbols in the instrument panel will
switch from CC to ACC
to indicate that Adaptive Cruise Control is
in standby mode.
3. Pressing the button on the steering
wheel keypad.
>
Adaptive Cruise Control will go into active
mode and set the vehicle's current speed
and the selected time interval to the vehi-
cle ahead.
Related information
Adaptive Cruise Control* (p. 300)
Cruise control (p. 291)