2017 VOLVO V90 brakes

DRIVER SUPPORT
}}
331
WARNING
City Safety is an aid and does not work in all driving situations, traffic, weather and roadconditions. Warning only activated in the event of a high risk for collision. This section and the section"Limitations for City Safety" inform about limi-tations that the driver should be aware ofbefore using City Safety. Warnings and brake interventions for pedes- trians and cyclists are deactivated at vehiclespeeds above 70 km/h (43 mph). City Safety's auto-brake function can prevent a collision or reduce collision speed. Toensure full brake performance, the drivershould always depress the brake pedal - evenif the car auto-brakes. City Safety does not activates any auto-brake functions in the event of heavy acceleration. The driver is always responsible for maintain- ing the correct distance and speed - neverwait for a collision warning or for City Safetyto intervene.
Market limitationCity Safety is not available in all countries. If City Safety does not appear in the centre display's
Settings menu, the car is not equipped with this
function. Search path in the top menu:
SettingsMy
Car
IntelliSafe
Overview
Function overview 14
.
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
City Safety carries out three steps in the follow-ing order:
1. Collision warning
2. Brake support
3. Auto Brake
Collision warning
The driver is first warned of a potentially immi- nent collision. City Safety can detect pedestrians, cyclists or vehicles that are stationary or moving in the samedirection as the car and are ahead. City Safetycan also detect pedestrians, cyclists or large ani-mals that are crossing the road in front of the car. In the event of a risk of collision with a pedes- trian, large animal, cyclist or vehicle (includingvehicles described in the "City Safety in crosstraffic" section), the driver's attention is alerted bymeans of a red flashing warning signal, an acous-tic signal and a haptic warning in the form of abrake pulse. At lower speeds or with hard brakingor acceleration there will be no haptic warning.The brake pulse frequency varies according tothe car's speed.
Brake support
If the risk of collision has increased further after the collision warning then the brake support isactivated. Brake support reinforces the driver

||
DRIVER SUPPORT
332
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 isimminent then the automatic braking function isdeployed - this takes place irrespective ofwhether or not the driver brakes. Braking thentakes place with full brake force in order toreduce collision speed, or with limited brake forceif it is sufficient to avoid a collision. In connection with automatic braking the seatbelt tensioner may also be activated. For more infor-mation see the "Seatbelt tensioner" section. In some situations, the action of Auto-brake may begin with light braking and then progress to fullbrake action. When City Safety has prevented a collision with a stationary object, the car remains stationary inanticipation of positive action by the driver. If thecar has been braked to avoid collision with aslower vehicle in front, its speed is reduced tomatch that of the vehicle in front.
NOTE
On cars with manual gearbox, the engine stops when the Auto-brake function has stop-ped the car, unless the driver has managed todepress the clutch pedal beforehand.
The driver can always interrupt a braking inter- vention by firmly depressing the acceleratorpedal.
NOTE
When City Safety™ brakes, the brake lights
come on.
When City Safety is activated and brakes the vehicle, the driver display shows a text messageto the effect that the function is/has been active.
WARNING
City Safety must not be used as an excuse for the driver to change his/her driving style. Ifthe driver relies solely on City Safety to do thebraking, there might be a risk of a collisionsooner or later.
Related information
• Setting the warning distance for City Safety (p. 332)
• Detection of obstacles with City Safety
™
(p. 333)
• City Safety when evasive manoeuvres areprevented (p. 336)
• City Safety in cross traffic (p. 335)
• Limitations of City Safety (p. 337)
• Messages for City Safety (p. 339)
• Seatbelt tensioner (p. 59)
Setting the warning distance for City Safety
City Safety is always activated, but it is possible to select the warning distance for the function.
NOTE
The City Safety function cannot be deacti- vated. It is activated automatically when theengine/electric operation is started andremains switched on until the engine/electricoperation is switched off.
The warning distance determines the sensitivity of the system and regulates the distance atwhich the visual, acoustic and haptic warningsshall be triggered. 1. Tap on
Settings in top view in the centre
display.
2. Press
My CarIntelliSafe.
3. Under
City Safety Warning, select Late,Normal or Early to set the desired warning
distance.
If the
Early setting produces too many warnings,
which could be perceived as irritating in certain situations, then use the
Normal or Late warning
distance. If warnings are perceived as being too frequent or disturbing then the warning distance can bereduced. This would lead to the system warning

DRIVER SUPPORT
}}
337
has the opportunity to avoid a collision via a steering manoeuvre. However, if City Safety anticipates that an evasive manoeuvre is not possible due to traffic in anadjacent lane, the function can assist the driverby automatically starting to brake at an earlierstage.
WARNING
City Safety's ability to anticipate a certain sit- uation is an aid, and does not work in all driv-ing situations or traffic, weather and road con-ditions. The driver always bears ultimate responsibility for ensuring that the vehicle is driven safelyand that applicable laws and road traffic regu-lations are followed.
Related information
•
City Safety (p. 330)
• Limitations of City Safety (p. 337)
Limitations of City Safety
The City Safety function may have limitations in certain situations.
Surroundings
Low objects
Low-hanging objects, e.g. a flag/pennant for pro- jecting load, or accessories such as auxiliarylamps and bull bars that are higher than the bon-net limit the function.
Skidding
On slippery road surfaces the braking distance is extended, which may reduce the capacity of CitySafety to avoid a collision. In such situations, theanti-lock brakes and the stability control ESC willgive the best possible braking force with main-tained stability.
Oncoming light
The visual warning signal in the windscreen may be difficult to notice in the event of strong sun-light, reflections, when sunglasses are beingworn or if the driver is not looking straight ahead.
Heat
In the event of high passenger compartment temperature caused by e.g. strong sunlight, thevisual warning signal in the windscreen may betemporarily disengaged.
The camera and radar unit's field of view
The camera's field of vision is limited, which is why pedestrians, large animals, cyclists and vehi- cles in some situations cannot be detected, orthey are detected later than anticipated. Dirty vehicles may be detected later than others and if it is dark, motorcycles may be detected lateor not at all. If a text message in the driver display indicates that the camera and radar unit is obstructed, CitySafety may be unable to detect pedestrians, largeanimals, cyclists, vehicles or road lines ahead ofthe car. This means that the functionality of CitySafety may be reduced. However, an error message is not shown in all situations where the windscreen sensors areobstructed. The driver must therefore take care tokeep the area of windscreen in front of the cam-era and radar unit clear.
IMPORTANT
Maintenance and replacement of City Safety components must only be performed by aworkshop - an authorised Volvo workshop isrecommended.
Driver intervention
Reversing
When your own car is reversing, City Safety is temporarily deactivated.

DRIVER SUPPORT
339
Messages for City Safety
A number of messages regarding City Safety can be shown in the driver display.The following table shows some examples.
Message Specification
Automatic intervention City SafetyWhen City Safety brakes or has done an automatic braking, several of the driver display symbols may be illuminated in connection with a text message being shown.
City Safety Reduced functionality Service requiredThe system does not function as it should. A workshop should be contacted - an authorised Volvo workshop is recommended.
Related information
•City Safety (p. 330)

DRIVER SUPPORT
}}
* Option/accessory.365
Activating/deactivating Parking assistance*
The Parking assistance function can be acti- vated/deactivated.
The front and side parking assistance sensors are activated automatically when the engine isstarted. The rear sensors activate if the car rollsbackwards or if reverse gear in engaged.
The function is activated/deac-tivated in function view in thecentre display. Parking assistance can also be activated/deactivated from thecamera views.
–Tap on the Park Assist button in function
view.
> Parking assistance is activated/deacti- vated, a green/grey indicator is displayed in the button.
Related information
• Park Assist
* (p. 363)
• Cross Traffic Alert
* (p. 343)
Limitations of Parking assistance *
The Parking assistance function may have limita- tions in certain situations.
NOTE
Since a towbar is configured with the car's electrical system, towbar protrusion isincluded when the function measures the dis-tance to an object behind the car.
IMPORTANT
Objects e.g. chains, thin glossy poles or low barriers may be in the "signal shadow" andare then temporarily not detected by the sen-sors - the pulsating tone may then unexpect-edly stop instead of changing over to theexpected constant tone. The sensors cannot detect high objects, such as projecting loading docks.
• In such situations, pay extra attention andmanoeuvre/reposition the car particularlyslowly or stop the current parkingmanoeuvre - there may be a high risk ofdamage to vehicles or other objects sinceinformation from the sensors is notalways reliable in such situations.
IMPORTANT
In certain conditions the parking assistance system may produce incorrect warning sig-nals that are caused by external soundsources that emit the same ultrasonic fre-quencies that the system works with. Examples of such sources include horns, wet tyres on asphalt, pneumatic brakes andexhaust noises from motorcycles, etc.
Maintenance
Location of the parking sensors 24
.
For parking assistance to work optimally, the parking assistance sensors must be cleaned reg-ularly with water and car shampoo.
24 NOTE: The illustration is schematic - details may vary depending on car model.

DRIVER SUPPORT
}}
* Option/accessory.379
Limitations of Park Assist Pilot *
The Active parking assistance (Park Assist Pilot – PAP) function may have limitations in certainsituations.
Parking is discontinuedA parking sequence will be discontinued:
• if the driver moves the steering wheel
• if the car is driven too quickly - above 7 km/h (4 mph)
• if the driver presses
Cancel in the centre
display
• when the anti-lock brakes or the Electronic stability control are engaged - e.g. when awheel loses grip on a slippery road.
Where applicable, a message in the centre dis-play states the reason for a parking sequencebeing discontinued.
NOTE
Dirt, ice and snow covering the sensors will reduce their function and may prevent meas-urement.
IMPORTANT
Under certain circumstances, PAP is unable to find parking spaces - one reason for thismay be the fact that there is interference withthe sensors from external sound sourceswhich emit the same ultrasound frequenciesas those with which the system works. Examples of such sources include horns, wet tyres on asphalt, pneumatic brakes andexhaust noises from motorcycles etc.
Driver responsibilityThe driver should bear in mind that the PAP is an aid – not an infallible, fully-automatic function.The driver must therefore be prepared to inter-rupt a parking step. There are also a few details to bear in mind while parking, e.g.:
• PAP bases itself on the locations of vehiclesalready parked nearby - if they are inap-propriately parked, your own car's tyres andwheel rims may be damaged by contact withthe kerb.
• PAP is designed for parking on straightstreets - not sharp curves or bends. For thisreason, make sure the car is parallel to theparking space when PAP measures thespace. •
Parking spaces on narrow streets are notalways feasible, since the space required formanoeuvring may not be sufficient.
• Bear in mind that the front of the car mayswing out towards oncoming traffic whilebeing parked.
• Objects situated higher than the detectionareas of the sensors are not taken intoaccount when calculating the parkingmanoeuvre. This may cause PAP to turn intothe parking space too early, and hence suchparking spaces should be avoided.
• The driver is responsible for determiningwhether the space selected by PAP is suita-ble for parking.
• Use approved tyres 28
with the correct tyre
pressure - this affects the ability of PAP topark the car.
• Heavy rain or snow may cause the system tomeasure the parking space incorrectly.
• Do not use PAP if snow chains or a sparewheel are fitted.
• Do not use PAP if cargo items are protrudingfrom the car.
• Perpendicular parking spaces may be missedor offered unnecessarily if one parked car isprotruding more than other parked cars.
28
"Approved tyres" refers to tyres of the same type and make as those fitted new on delivery from the factory.

STARTING AND DRIVING
* Option/accessory.391
Drive position - D
D is the normal driving position. Shifting up and
down takes place automatically based on the level of acceleration and speed. The car must be stationary when changing gear from R position to
D position.
Manual gearshift mode - M
The manual gearshift mode can be selected at any time while driving. The car engine-brakeswhen the accelerator pedal is released. Select manual gearshift mode by moving the gear selector sideways from position D to the
end position at " ±". The driver display shows
which gear is engaged at the time.
• Press the gear selector forwards to "
+"
(plus) to change up one step and release it.
• Press the gear selector backwards to "
–"
(minus) to change down one step and release it.
manual gearshift mode in the driver display 2
.
The gearbox automatically shifts down if the speed decreases to a level lower than appropri-ate for the selected gear, in order to avoid jerkingand stalling. To return to automatic gear changing, press the gear selector sideways to the end position at D.
Kick-downWhen the accelerator pedal is pressed all the way to the floor (beyond the position normallyregarded as full acceleration) a lower gear isimmediately engaged. This is known as kick-down. If the accelerator is released from the kick-down position, the gearbox automatically changes up. Kick-down is used when maximum accelerationis needed, such as for overtaking.
Safety function
To prevent over-revving of the engine, the gear- box control program has a protective downshiftinhibitor. The gearbox does not permit downshifting/kick- down which would result in an engine speed highenough to damage the engine. Nothing happensif the driver still tries to shift down in this way athigh engine speed – the original gear remainsengaged. When kick-down is activated the car can change one or more gears at a time depending onengine speed. The car changes up when theengine reaches its maximum speed in order toprevent damage to the engine.
Related information
•
Gearbox (p. 389)
• Changing gear with steering wheel paddles
*
(p. 395)
• Gear shift indicator
* (p. 392)
• Gear selector inhibitor (p. 394)
• Ignition positions (p. 385)
2
The figure is schematic, the layout may vary depending on the car's equipment.

||
STARTING AND DRIVING
* Option/accessory.
400
Related information
• Start/Stop (p. 396)
• Using the Start/Stop function (p. 396)
• Support battery (p. 533)
Drive modes
*
Selection of drive mode affects the car's driving characteristics in order to enhance the drivingexperience and facilitate driving in special situa-tions.
Using the drive modes it is possible to quickly have access to the car's numerous functions andsettings for different driving needs. The followingsystems are adapted to obtain the best possibledriving characteristics in each respective drivemode: • Steering
• Engine/gearbox 5
/all-wheel drive *
• Brakes
• Shock absorption
• Driver display
• Start/Stop function
• Climate settings
Select the drive mode that best suits the current driving conditions. Remember that not all drivemodes can be selected in all situations.
Selecting drive mode
1. Press the drive mode control DRIVE MODE.
> A pop-up menu is opened in the centre display.
2. Roll the wheel upward or downward until the desired drive mode is highlighted.
3. Press the drive mode control or tap directly on the touch screen to confirm the selection.
> The selected drive mode is indicated inthe driver display.
A message is shown when a drive mode is unse- lectable, for example:
•
Cannot be selected because gear is in manual
•Cannot be selected due to low battery
5 Applies to automatic gearbox.