2018 VOLVO XC90 TWIN ENGINE warning

DRIVER SUPPORT
347
Rear Collision Warning
The Rear Collision Warning (
RCW) function can
help the driver avoid rear-end collisions from
vehicles approaching from behind.
RCW is automatically activated each time the
engine is started.
RCW can warn the driver of a potential collision
with vehicles approaching from behind by rapidly
flashing the turn signals.
If, at a speed below 30 km/h (20 mph), the RCW
function detects that the car is in danger of being
hit from behind, the seatbelt tensioners may ten-
sion the front seatbelts and activate the Whiplash
Protection System safety system.
Immediately before a collision from behind, RCW
may also activate the foot brake in order to
reduce the forward acceleration of the car during
the collision. However, the brakes will only be
applied if your vehicle is stationary. The brakes
will be immediately released if the accelerator
pedal is depressed.
Related information
• Rear Collision Warning limitations (p. 347)
• Whiplash Protection System (p. 46) Rear Collision Warning limitations
In some situations, it may be difficult for RCW to
warn the driver of a collision risk. This may be the case if:
• the vehicle approaching from the rear is
detected at a late stage
• the vehicle approaching from the rear
changes lanes at a late stage
• the vehicle approaching from the rear is mov-
ing at a speed above 80 km/h (50 mph)
• a trailer, bicycle holder or similar is con-
nected to the vehicle's electrical system - the
RCW function will then be automatically
deactivated.
NOTE In certain markets RCW does not warn with
the direction indicators due to local traffic
regulations – in such cases, that part of the
function is deactivated.
NOTE The warning with direction indicators for Rear
Collision Warning is deactivated if the colli-
sion warning distance in the City Safety func-
tion is set to the lowest level "
Late".
The seat belt tensioning and braking func-
tions remain active.
Related information
• Rear Collision Warning (p. 347)

DRIVER SUPPORT
* Option/accessory.
348 BLIS*
The BLIS 78
function is designed to help provide
assistance in heavy traffic with several lanes
moving in the same direction by helping the
driver to detect the presence of vehicles in the
"blind spot" area behind and to the side of the
vehicle.
BLIS is a driver support system designed to alert
the driver of:
• vehicles in your "blind spot"
• vehicles approaching rapidly in adjacent
lanes. Location of BLIS indicator light.
79 Indicator light
The BLIS button in the center display's Func-
tion view is used to activate/deactivate the
function. BLIS overview
Blind spot zone
Rapidly approaching vehicle zone.
The BLIS function is active at speeds
above 10 km/h (6 mph).
The system is designed to react to: • vehicles passing your vehicle
• vehicles that are rapidly approaching your
vehicle from behind.
When BLIS

detects a vehicle in zone 1 or a rap-
idly approaching vehicle in zone 2, an indicator
light will illuminate in the relevant rearview mirror
and glow steadily. If the driver then uses the turn
signal on the side in which the warning has been 78
Blind Spot Information Systems
79 Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
}}
349
given, the indicator light will become brighter and
begin flashing.
NOTE
The light illuminates on the side of the vehicle
where the system has detected the vehicle. If
the vehicle is passed on both sides simulta-
neously, both lights come on.
WARNING
•
The BLIS 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 responsibility for changing lanes
safely and using good judgment always
rests with the driver.
• BLIS 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.
Related information
•Activating/deactivating BLIS (p. 349)
• BLIS limitations (p. 350) •
Recommended maintenance for BLIS
(p. 351)
• BLIS messages (p. 352) Activating/deactivating BLIS
The BLIS
80
function can be activated/deacti-
vated. Location of BLIS indicator light.
81 Indicator light
The BLIS button in the center display's Func-
tion view is used to activate/deactivate the
function.
– Tap the
BLIS button in Function view.
>
The BLIS indicator light shows the status
of the function: GREEN (on) or GRAY
(off).
If BLIS is activated when the engine is started,
the indicator lights in the rearview mirrors will
flash once.
If BLIS is deactivated when the engine is turned
off, it will remain off the next time the engine is
started and the indicator lights will not illuminate.

||DRIVER SUPPORT
* Option/accessory.
350
Related information
• BLIS* (p. 348) BLIS limitations
BLIS 82
functionality may be reduced in certain
situations. Keep this area clean (on both the left and right sides of
the vehicle)
83
.
Examples of limitations:
• Dirt, ice and snow covering the sensors may
reduce functionality and prevent the system
from providing warnings.
• The BLIS function is automatically deacti-
vated if a trailer, bicycle holder or similar is
connected to the vehicle's electrical system.
• For BLIS to function optimally, bicycle hold-
ers, luggage racks or similar should not be
mounted on the vehicle's towbar.WARNING •
BLIS does not work in sharp curves.
• BLIS does not work when the vehicle is
being reversed.
Related information
•
BLIS* (p. 348) 80
Blind Spot Information
81 Note: This illustration is general and details may vary depending on mod\
el.
82 Blind Spot Information
83 Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
* Option/accessory.351
Recommended maintenance for
BLIS
•
For optimal performance, it is important to
keep the areas in front of the sensors clean.
• Do not attach any objects, tape or decals to
the surface of the sensors. Keep this area clean (on both the left and right sides of
the vehicle)
84
.
The BLIS sensors are located on the inside of
each of the rear fenders/bumpers and are also
used by the Cross Traffic Alert (CTA) and Rear
Collision Warning functions.
CAUTION Repair of BLIS and CTA components or
repainting of the bumper may only be per-
formed by a workshop – an authorized Volvo
workshop is recommended.
Related information
•
BLIS* (p. 348)
• Cross Traffic Alert* (p. 353)
• Activating/deactivating Cross Traffic Alert
(p. 354)
• Cross Traffic Alert limitations (p. 354)
• Recommended maintenance for Cross
Traffic Alert (p. 355)
• Cross Traffic Alert messages (p. 356)
• Rear Collision Warning (p. 347) 84
Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
* Option/accessory.353
Cross Traffic Alert*
CTA 86
is a supplementary driver support system
to BLIS 87
that is intended to help the driver
detect vehicles crossing behind the vehicle
while backing up. CTA overview.
CTA supplements BLIS by detecting traffic cross-
ing from the side, e.g. when backing out of a
parking space.
CTA is primarily designed to detect vehicles, but
in certain cases can also detect pedestrians or
smaller objects such as bicycles.
CTA is only active when the vehicle is moving
backward or if reverse gear is engaged. If CTA detects that something is approaching
your vehicle from the side:
• an audible signal will sound from either the
left or right speaker, depending on which
side of your vehicle the object is approaching
from.
• an icon will illuminate in the PAS 88
graphic
on the screen.
• an icon will appear in the Park Assist Cam-
era's Top view. Illuminated CTA icon in the PAS
88
graphic 89
on the
screen.
WARNING •
The Cross Traffic Alert function is supple-
mentary driver support intended to facili-
tate driving and make it safer – it cannot
handle all situations in all traffic, weather
and road conditions.
• The responsibility for reversing the vehicle
safely and using good judgment always
rests with the driver.
• Cross Traffic Alert 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 appropri-
ate distance to other vehicles, and in
accordance with current traffic rules and
regulations.
Related information
• Activating/deactivating Cross Traffic Alert
(p. 354)
• Cross Traffic Alert limitations (p. 354)
• Recommended maintenance for Cross
Traffic Alert (p. 355)
• Cross Traffic Alert messages (p. 356) 86
Cross Traffic Alert
87 Blind Spot Information
88 Park Assist System: Parking assistance with reversing sensors
89 Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
* Option/accessory.355
Examples of further limitations
•Dirt, ice and snow covering the sensors may
reduce functionality and prevent the system
from providing warnings. For additional infor-
mation, see the section "Recommended
maintenance for Cross Traffic Alert".
• CTA is automatically deactivated if a trailer,
bicycle holder or similar is connected to the
vehicle's electrical system.
• For CTA to function optimally, bicycle hold-
ers, luggage racks or similar should not be
mounted on the vehicle's towbar.
Related information
•
Cross Traffic Alert* (p. 353) Recommended maintenance for
Cross Traffic Alert
•
For optimal performance, it is important to
keep the areas in front of the sensors clean.
• Do not attach any objects, tape or decals to
the surface of the sensors. Keep this area clean (on both the left and right sides of
the vehicle)
92
.
The CTA sensors are located on the inside of
each of the rear fenders/bumpers and are also
used by the BLIS 93
and Rear Collision Warning
functions.
CAUTION Repair of BLIS and CTA components or
repainting of the bumper may only be per-
formed by a workshop – an authorized Volvo
workshop is recommended.
Related information
•
Cross Traffic Alert* (p. 353)
• BLIS* (p. 348)
• Rear Collision Warning (p. 347) 92
Note: This illustration is general and details may vary depending on mod\
el.
93 Blind Spot Information

DRIVER SUPPORT
* Option/accessory.357
Road Sign Information*
The Road Sign Information (RSI
95
) function noti-
fies the driver of speed-related road signs the
vehicle is passing. Examples of signs that can be detected
96
.
If the vehicle passes a speed limit sign, it will be
displayed in the instrument panel and the head-
up display*.
NOTE In certain markets, the Road Sign Information
function (RSI) is only available in combination
with Sensus Navigation.
WARNING •
The Road Sign Information 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.
• Road Sign Information 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 accordance with current traffic
rules and regulations.
Related information
•Activating/deactivating Road Sign Informa-
tion (p. 358)
• Road Sign Information and sign displays
(p. 358)
• Road Sign Information and Sensus
Navigation (p. 359)
• Road Sign Information with Speed Warning
and Settings (p. 359)
• Activating/deactivating Speed Warning in
Road Sign Information (p. 360) •
Road Sign Information with speed camera
information (p. 361)
• Road Sign Information limitations (p. 361) 95
Road Sign Information
96 Road signs differ according to market ‒ the illustrations shown here are just some examples.