Volvo V60 Twin Engine (2018 year). Instruction - part 13

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DRIVER SUPPORT

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223

City Safety™ - function

City Safety detects the traffic in front of the car
with a laser sensor fitted in the top edge of the
windscreen. If there is an imminent risk of colli-
sion, City Safety will automatically brake the car,
which may be experienced as heavy braking.

Laser sensor transmitter and receiver window

If the speed difference is 4-15 km/h (3-9 mph)
in relation to the vehicle in front then City Safety
can completely avoid a collision.

City Safety activates a short, sharp braking proce-
dure and stops the car in normal circumstances,
just behind the vehicle in front. For most drivers
this is well outside normal driving style and may
be experienced as being uncomfortable.

If the difference in speed between the vehicles is
greater than 15 km/h (9 mph) then City Safety

may not avoid the collision on its own - to obtain
full brake force, the driver must depress the
brake pedal and this could then make it possible
to avoid a collision, even at speed differences
above 15 km/h (9 mph).

When the function is activated and brakes, the
combined instrument panel shows a text mes-
sage to the effect that the function is/has been
active.

When City Safety brakes, the brake lights
come on.

Related information

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City Safety™ - operation

City Safety

™ is a function for helping the driver

to avoid a collision when driving in queues,
amongst other things, when changes in the traf-
fic ahead, combined with a lapse in attention,
could lead to an incident.

On and Off

The City Safety

™ function is activated auto-

matically when the engine is started.

In certain situations, it may advisable to disable
City Safety

™, e.g. where leafy branches could

sweep over the bonnet and/or windscreen.

City Safety

™ handled in the menu system MY

CAR (p. 115) and after starting the engine the
function can be deactivated as follows:

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Search in MY CAR for

Driver support

system

and select the

Off

option at

City

Safety

However, the function will be enabled the
next time the engine is started, regardless of
whether the system was enabled or disabled
when the engine was switched off.

NOTE: The illustration is schematic - details may vary depending on car model.

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224

WARNING

The laser sensor also transmits laser light

when City Safety

™ is disabled manually.

Related information

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MY CAR (p. 115)

City Safety™ - limitations

The sensor in City Safety is designed to detect
cars and other large vehicles in front of the car
irrespective of whether it is day or night.

However, the function does have some limita-
tions.

The sensor's limitations mean that City Safety
has poorer functionality - or none at all - in e.g.
heavy snowfall or rain, dense fog, dust storms or
white-out situations. Misting, dirt, ice or snow on
the windscreen may also disrupt the function.

Low-hanging objects, e.g. a flag/pennant for pro-
jecting load, or accessories such as auxiliary
lamps and bull bars that are higher than the bon-
net limit the function.

The laser beam from the sensor in City Safety
measures how the light is reflected. The sensor
cannot detect objects with low reflection capacity.
The rear sections of the vehicle generally reflect
the light sufficiently thanks to the number plate
and rear light reflectors.

On slippery road surfaces the braking distance is
extended, which may reduce the capacity of City
Safety to avoid a collision. In such situations the
ABS

and ESC

systems will provide best pos-

sible braking force with maintained stability.

When your own car is reversing, City Safety is
temporarily deactivated.

City Safety is not activated at low speeds - below
4 km/h (3 mph), which is why the system does
not intervene in situations where a vehicle in front
is being approached very slowly, e.g. when park-
ing.

Driver commands are always prioritised, which is
why City Safety does not intervene in situations
where the driver is steering or accelerating in a
clear manner, even if a collision is unavoidable.

When City Safety has prevented a collision with a
stationary object the car remains stationary for a
maximum of 1.5 seconds. If the car is braked for
a vehicle in front that is moving, then speed is
reduced to the same speed as that maintained by
the vehicle in front.

On a car with manual gearbox the engine stops
when City Safety has stopped the car, unless the
driver manages to depress the clutch pedal
beforehand.

(Anti-lock Braking System) - Anti-lock braking system.

(Electronic Stability Control) - Stability system.

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225

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Keep the windscreen surface in front of
the laser sensor free from ice, snow and
dirt (see the illustration for sensor loca-
tion (p. 223)).

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Do not affix or mount anything on the
windscreen in front of the laser sensor.

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Remove ice and snow from the bonnet -
snow and ice must not exceed a height
of 5 cm.

Fault tracing and action

If the message

Windscreen sensors blocked

See manual

is shown in the combined instru-

ment panel it indicates that the laser sensor is
blocked and cannot detect vehicles in front of the
car. This means in turn that City Safety is not
operational.

The

Windscreen sensors blocked See

manual

message is not shown for all situations

in which the laser sensor is blocked. The driver
must therefore be diligent about keeping the
windscreen and area in front of the laser sensor
clean.

The following table presents possible causes for
the message being shown, along with sugges-
tions for appropriate action.

Cause

Action

The windscreen surface
in front of the laser sen-
sor is dirty or covered
with ice or snow.

Clean the wind-
screen surface in
front of the sensor
from dirt, ice and
snow.

The laser sensor field of
vision is blocked.

Remove the block-
ing object.

IMPORTANT

If there are cracks, scratches or stone chips in
the windscreen in front of either of the laser
sensor's "windows" and they cover a surface
of approx. 0.5 x 3.0 mm (or larger), then a
workshop must be contacted for replacement
of the windscreen (see the illustration for
sensor location (p. 223)) - an authorised
Volvo workshop is recommended.

Failure to take action may result in reduced
performance for City Safety

™.

To avoid the risk of failed, deficient or
reduced operation for City Safety

™, the fol-

lowing also applies:

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Volvo recommends that you do not repair
cracks, scratches or stone chips in the
area in front of the laser sensor - instead,
the whole windscreen should be
replaced.

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Before replacing a windscreen, contact
an authorised Volvo workshop to verify
that the correct windscreen is ordered
and fitted.

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The same type or Volvo-approved wind-
screen wipers must be fitted during
replacement.

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226

Related information

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City Safety™ - laser sensor

The City Safety

™ function includes a sensor

which transmits laser light (see illustration
(p. 223) for sensor location). Contact a qualified
workshop in the event of a fault or if the laser
sensor needs servicing - an authorised Volvo
workshop is recommended. It is absolutely
essential to follow the prescribed instructions
when handling the laser sensor.

The following two labels relate to the laser sen-
sor:

The upper label in the figure describes the laser
beam's classification:

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Laser radiation - Do not look into the laser
beam with optical instruments - Class 1M
laser product.

The lower label in the figure describes the laser
beam's physical data:

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IEC 60825-1:1993 + A2:2001. Complies
with FDA (U.S. Food Administration) stand-
ards for laser product design with the excep-
tion of deviations in accordance with "Laser
Notice No. 50" from 26 July 2001.

Radiation data for the laser sensor

The following table specifies the laser sensor's
physical data.

Maximum pulse energy

2.64

µJ

Maximum average output

45 mW

Pulse duration

33 ns

Divergence (horizontal x vertical)

28° × 12°

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227

WARNING

If any of these instructions are not followed

then there is a risk of eye injury!

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Never look into the laser sensor (which
emits spreading invisible laser radiation)
at a distance of 100 mm or closer with
magnifying optics such as a magnifying
glass, microscope, lens or similar optical
instruments.

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Testing, repair, removal, adjustment
and/or replacement of the laser sensor's
spare parts must only be carried out by a
qualified workshop - we recommend an
authorised Volvo workshop.

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To avoid exposure to harmful radiation, do
not carry out any readjustments or main-
tenance other than those specified here.

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The repairer must follow specially drawn
up workshop information for the laser
sensor.

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Do not remove the laser sensor (this
includes removing the lenses). A removed
laser sensor does not fulfil laser class 3B
as per standard IEC 60825-1. Laser
class 3B is not eye-safe and therefore
entails a risk of injury.

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The laser sensor's connector must be
unplugged before removal from the wind-
screen.

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The laser sensor must be fitted onto the
windscreen before the sensor's connec-
tor is plugged in.

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The laser sensor transmits a laser light
when the remote control key is in key
position II (p. 83) even if the engine is
switched off.

Related information

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In conjunction with automatic braking by the City
Safety

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228

City Safety™ - symbols and

messages

™ (p. 222) system, one or more symbols

may illuminate in the combined instrument panel
and a text message may be shown. A text mes-
sage can be acknowledged by briefly pressing
the

OK button on the direction indicator stalk.

Symbol

Message

Meaning/Action

Auto braking by City Safety

City Safety

™ is braking or has automatically braked.

Windscreen sensors blocked See manual

The laser sensor is temporarily non-operational because something is blocking it.

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Remove the object blocking the sensor and/or clean the windscreen in front of the sensor.

Read about laser sensor limitations (p. 224).

City Safety Service required

City Safety

™ is not operational.

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Visit a workshop if the message remains - an authorised Volvo workshop is recommended.

Related information

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DRIVER SUPPORT

* Option/accessory.

229

Collision warning system*

"Collision Warning with Auto Brake and Cyclist
and Pedestrian Detection" is an aid to assist the
driver when there is a risk of colliding with a
pedestrian, cyclist or vehicle in front that are sta-
tionary or moving in the same direction.

"Collision Warning with Auto Brake and Cyclist
and Pedestrian Detection" is activated in situa-
tions where the driver should have started brak-
ing earlier, which is why it cannot help the driver
in every situation.

"Collision Warning with Auto Brake and Cyclist
and Pedestrian Detection" is designed to be acti-
vated as late as possible in order to avoid unnec-
essary intervention.

"Collision Warning with Auto Brake and Cyclist
and Pedestrian Detection" can prevent a collision
or reduce collision speed.

"Collision Warning with Auto Brake and Cyclist
and Pedestrian Detection" must not be used as
an excuse for the driver to change his/her driving
style. If the driver solely relies on Collision Warn-
ing with Auto Brake to do the braking, there
might be a risk of a collision sooner or later.

Two system levels

Depending on how the car is equipped, the "Col-
lision Warning with Auto Brake and Cyclist and

Pedestrian Detection" function may appear in
two variants:

Level 1

The driver is merely warned

of occurring obsta-

cles by means of visual and acoustic signals - no
automatic braking intervenes, the driver must
himself brake.

Level 2

The driver is warned of occurring obstacles by
means of visual and acoustic signals - the car is
braked automatically if the driver himself does not
act within a reasonable time.

IMPORTANT

Maintenance of the internal components of
the "Collision Warning with Auto Brake and
Cyclist and Pedestrian Detection" must only
be performed at a workshop - an authorised
Volvo workshop is recommended.

Related information

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* - function (p. 230)

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* - detection of

pedestrians (p. 232)

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* - detection of

cyclists (p. 231)

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* - operation

(p. 233)

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* - limitations

(p. 235)

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* - camera sensor

limitations (p. 236)

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The collision warning system and City Safety

* - symbols and

messages (p. 238)

No warning for cyclists with "Level 1".

DRIVER SUPPORT

* Option/accessory.

230

Collision warning system* - function

Function overview

Audio-visual warning signal in the event of a
collision risk.
Radar sensor

Camera sensor

Collision Warning with Auto Brake executes
three steps in the following order:

1. Collision warning
2. Brake support

3. Auto Brake

™

(p. 222) complement each other.

1 - Collision warning

The driver is first warned of a potentially immi-
nent collision.

The collision warning system can detect pedes-
trians, cyclists or vehicles that are stationary or
moving in the same direction as your car and are
located in front of you.

If there is a risk of collision with a pedestrian,
cyclist or a vehicle then the driver's attention is
attracted with a flashing red warning signal (1)
and an acoustic signal.

2 - Brake support

If the risk of collision has increased further after
the collision warning then the brake support is
activated.

This means that the brake system is prepared for
rapid braking by applying the brakes lightly, which
may feel like a slight jolt.

If the brake pedal is depressed sufficiently
quickly then full brake function is implemented.

Brake support also reinforces the driver's braking
if the system considers that the braking is not
sufficient to avoid a collision.

3 - Auto Brake

The automatic brake function is activated last.

If in this situation the driver has not yet started to
take evasive action and the risk of collision is
imminent then the automatic braking function is
deployed - this takes place irrespective of
whether or not the driver brakes. Braking then
takes place with full brake force in order to
reduce collision speed, or with limited brake force
if it is sufficient to avoid a collision. For cyclists,
the warning and full brake intervention may come
very late or simultaneously.

NOTE: The illustration is schematic - details may vary depending on car model.

With system Level 2 only.

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WARNING

The collision warning system does not

engage in all driving situations or traffic,

weather or road conditions. The collision

warning system does not react to vehicles or

cyclists driving in another direction to the car

or to animals.
Warning only activated in the event of a high

risk for collision. This section "Function" and

the section "Limitations" inform about limita-

tions that the driver must be aware of before

using the Collision Warning system with Auto

Brake.
Warnings and brake interventions for pedes-

trians and cyclists are deactivated at vehicle

speeds above 80 km/h (50 mph).
Warnings and brake interventions for pedes-

trians and cyclists do not work in darkness

and tunnels - not even when streetlights are

lit.
The auto-brake function can prevent a colli-

sion or reduce collision speed. To ensure full

brake performance, the driver should always

depress the brake pedal - even when the car

auto-brakes.
Never wait for a collision warning. The driver is

always responsible that the correct distance

and speed are maintained - even when the

collision warning system with auto-brake is

used.

Related information

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™ function must be activated, see City

Collision warning system* -

detection of cyclists

The function only "sees" cyclists from behind, who are

travelling in the same direction.

Optimum examples of what the system interprets as a

cyclist - with clear body and bicycle contours, directly

from behind and in the car's centre line.

Optimal performance of the system requires that
the system function that detects a cyclist
receives as unambiguous information as possible
about the body and bicycle contours - this implies
the opportunity to identify the bicycle, head, arms,
shoulders, legs, upper and lower body combined
with a normal human pattern of movement.

If large parts of the cyclist's body or bicycle are
not visible to the function's camera then the sys-
tem cannot detect a cyclist.

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232

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For the function to be able to detect a cyclist,
he/she must be an adult and riding an "adult
bicycle".

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The bicycle must be equipped with a highly
visible and approved

rearward-facing red

reflector, fitted at least 70 cm above the
roadway.

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The function can only detect cyclists directly
from behind and who are travelling in the
same direction - not at an angle from behind,
not from the side.

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Cyclists travelling on the left or right-hand
edge of the car's imagined/extended side
lines may be detected late or not at all.

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The function's capacity to detect cyclists at
dusk and dawn is limited - just like the
human eye.

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The function's capacity to detect cyclists is
deactivated when driving in darkness and
tunnels - even when streetlights are lit.

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For optimum bicycle detection, the City
Safety

Safety

™ (p. 222).

WARNING

Collision Warning with Auto Brake & Cyclist

Detection is a means of assistance.
The function cannot detect:

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all cyclists in all situations and does not
see partially obscured cyclists, for exam-
ple.

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cyclists in clothing that obscures the con-
tours of the body or who are approaching
from the side.

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bicycles that have no rearward-facing red
reflector.

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bicycles loaded with large objects.

The driver is always responsible that the vehi-

cle is driven properly and with a safety dis-

tance adapted to the speed.

Related information

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Collision warning system* -

detection of pedestrians

Optimal examples of what the system regards as pedes-

trians with clear body contours.

Optimal performance of the system requires that
the system function that detects pedestrians
receives as unambiguous information as possible
about the contours of the body - this implies the
opportunity to identify the head, arms, shoulders,
legs, upper and lower body combined with a nor-
mal human pattern of movement.

If large parts of the body are not visible to the
function's camera then the system cannot detect
a pedestrian.

The reflector must fulfil the recommendations and conditions of the traffic authority in the market in question.

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233

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In order for a pedestrian to be detected
he/she must appear full-length and have a
height of at least 80 cm.

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The camera sensor's ability to see pedes-
trians at dusk and dawn is limited - just like
the human eye.

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The camera sensor's capacity to detect
pedestrians is deactivated when driving in
darkness and tunnels - even when street-
lights are lit.

WARNING

"Collision Warning with Auto Brake and

Cyclist and Pedestrian Detection" is a means

of assistance. The function cannot detect all

pedestrians in all situations and does not see,

for example:

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partially obscured pedestrians, people in
clothing that hides their body contour or
pedestrians shorter than 80 cm.

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pedestrians who are carrying larger
objects.

The driver is always responsible that the vehi-

cle is driven properly and with a safety dis-

tance adapted to the speed.

Related information

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Collision warning system* -

operation

Warning signals On and Off

1. Acoustic and visual warning signal in the event of a
collision risk

You can select whether the collision warning sys-
tem's acoustic and visual warning signals should
be switched on or off.

When starting the engine, the setting that was
selected when the engine was switched off is
obtained automatically.

(p. 115) - and there select On or Off.

The Brake Support and Auto Brake functions
are always enabled - they cannot be deacti-
vated.

Settings for the collision warning system are
made via the centre console's screen and the
menu system MY CAR, see (p. 115).

Light and acoustic signals

When the collision warning system's light and
acoustic warnings are activated, the warning lamp
(no. [1] in previous illustration) is tested each
time the engine is started by briefly illuminating
the warning lamp's separate points of light.

After starting the engine, both the light and
acoustic signals can be switched off:

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Search for

Collision warning

Driver

support system

in the menu system MY

CAR (p. 115) - and there select to uncheck
the function.

Acoustic signal

After starting the engine the warning sound can
be activated/deactivated separately:

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Search for

Warning sound

Collision

warning

in the menu system MY CAR

Following which, the collision warning system is
only indicated with a light signal.

The illustration is schematic - car model and details may differ.

DRIVER SUPPORT

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234

Set warning distance

The warning distance regulates the distance at
which the visual and acoustic warnings are
deployed.

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Search for

Warning distance

Collision

warning

in the menu system MY CAR

(p. 115) - and there select

Long

Normal

Short

The warning distance determines the system's
sensitivity. Warning distance

Long

provides an

earlier warning. First test with

Long

and if this

setting produces too many warnings, which could
be perceived as irritating in certain situations,
then change to warning distance

Normal

Only use warning distance

Short

in exceptional

cases, e.g. for dynamic driving.

When the adaptive cruise control is in use the
warning lamp and warning sound will be used
by the cruise control even if the collision
warning system is switched off.

The collision warning system warns the driver
in the event of a risk of a collision, but the
function cannot shorten driver reaction time.

In order for the collision warning system to be
effective - always drive with Distance Warning
(p. 201) set at time interval 4–5.

Even if the warning distance has been set to

Long

warnings could be perceived as being

late in certain situations, e.g. when there are
large differences in speed or if vehicles in
front brake heavily.

WARNING

No automatic system can guarantee 100 %

correct function in all situations. Therefore,

never test Collision Warning with Auto Brake

by driving at people or vehicles - this may

cause severe damage and injury and risk lives.

Checking settings

The current settings can be controlled via the
centre console's screen and the menu system
(p. 115) MY CAR.

Maintenance

Camera and radar sensor

For the sensors to work correctly, they must be
kept clear of dirt, ice and snow, and be cleaned
regularly with water and car shampoo.

Dirt, ice and snow covering the sensors will
reduce their function and may prevent meas-
urement.

Related information

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NOTE: The illustration is schematic - details may vary depending on car model.

DRIVER SUPPORT

* Option/accessory.

235

Collision warning system* -

limitations

The function has certain limitations - for example,
it is not active until 4 km/h (3 mph).

The collision warning system's visual warning sig-
nal (see (1) in the illustration (p. 230)) may be
difficult to notice in the event of strong sunlight,
reflections, when sunglasses are being worn or if
the driver is not looking straight ahead. The warn-
ing sound should therefore always be activated.

On slippery road surfaces the braking distance is
extended, which may reduce the capacity to avoid
a collision. In such situations the ABS and ESC
(p. 190) systems will provide best possible brak-
ing force with maintained stability.

The visual warning signal can be temporarily
disengaged in the event of high passenger
compartment temperature caused by strong
sunlight for example. If this occurs then the
warning sound is activated even if it is deacti-
vated in the menu system.

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Warnings may not appear if the distance
to the vehicle in front is small or if steer-
ing wheel and pedal movements are
large, e.g. a very active driving style.

WARNING

Warnings and brake interventions could be

implemented late or not at all if the traffic sit-

uation or external influences mean that the

radar or camera sensor cannot detect a

pedestrian, a vehicle or a cyclist in front cor-

rectly.
The sensor system has a limited range for
pedestrians and cyclists

- the system can

give effective warnings and brake interven-

tions for them at vehicle speeds up to

50 km/h (30 mph). For stationary or slow-

moving vehicles, warnings and brake interven-

tions are effective at vehicle speeds up to

70 km/h (43 mph).
Warnings for stationary or slow-moving vehi-

cles could be disengaged due to darkness or

poor visibility.
Warnings and brake interventions for pedes-

trians and cyclists are deactivated at vehicle

speeds exceeding 80 km/h (50 mph).

The collision warning system uses the same
radar sensors as the Adaptive cruise control
(p. 204). Read more about radar sensor limita-
tions (p. 217).

If warnings are perceived as being too frequent
or disturbing then the warning distance can be
reduced (p. 233). This would lead to the system

warning at a later stage, which reduces the total
number of warnings.

Collision Warning with Auto Brake is temporarily
deactivated with reverse gear engaged.

Collision Warning with Auto Brake is not acti-
vated at low speeds - below 4 km/h (3 mph),
which is why the system does not intervene in sit-
uations where the car is approaching a vehicle in
front very slowly, e.g. when parking.

In situations where the driver demonstrates
active, aware driving behaviour, a collision warn-
ing may be postponed slightly in order to keep
unnecessary warnings to a minimum.

When Auto Brake has prevented a collision with
a stationary object the car remains stationary for
a maximum of 1.5 seconds. If the car is braked
for a vehicle in front that is moving, then speed is
reduced to the same speed as that maintained by
the vehicle in front.

On a car with manual gearbox the engine stops
when Auto Brake has stopped the car, unless the
driver manages to depress the clutch pedal
beforehand.

Related information

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