brake VOLVO V90 2017 Owner's Manual

DRIVER SUPPORT
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is clear again the car returns to the selected speed.
WARNING
The Adaptive cruise control is an aid, which cannot handle all traffic, weather and roadconditions. The driver must always be observant with regard to the prevailing traffic conditions andintervene if the Adaptive cruise control doesnot maintain a suitable speed or suitable timeinterval. Read all the sections about the adaptive cruise control in the owner's manual in orderto learn about its limitations, of which thedriver should be aware before the function isused. The driver always bears responsibility for maintaining the correct time interval andspeed - even when the Adaptive cruise con-trol is being used.
Adaptive cruise control regulates the speed with acceleration and braking. It is normal for thebrakes to emit a low sound when they are beingused to adjust the speed. The adaptive cruise control aims to control the speed in a smooth way. In situations that demandsudden 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, brakingmay come unexpectedly or not at all. The adaptive cruise control aims to follow the vehicle ahead in the same lane at a time intervalset by the driver. If the radar unit cannot see anyvehicle in front then the car will instead maintainthe speed set and stored by the driver. This alsotakes place if the speed of the vehicle aheadincreases and exceeds the stored speed. The following applies for cars with automatic gearbox:
• Adaptive cruise control can follow anothervehicle at speed from 0 km/h up to200 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 avoid- ance system. The driver must intervene if thesystem does not detect a vehicle in front. The adaptive cruise control does not brake for humans or animals, and not for small vehiclessuch as bicycles and motorcycles. Nor for lowtrailers, oncoming, slow or stationary vehiclesand objects. Do not use the Adaptive cruise control, for example, in city traffic, at junctions, on slipperysurfaces, with a lot of water or slush on theroad, in heavy rain/snow, in poor visibility, onwinding roads or on slip roads.
IMPORTANT
Maintenance of adaptive cruise control com- ponents must only be performed at a work-shop - an authorised Volvo workshop is rec-ommended.

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Overview
Controls
Buttons and symbols for functions5
.
Increases stored speed or reactivates the adaptive cruise control and resumes storedspeed and time interval
Activate the adaptive cruise control and store the current speed or deactivate the adaptivecruise control
Reduces stored speed
Increases the time interval to vehicles ahead
Reduces the time interval to vehicles ahead
Target vehicle indicator: ACC has detected and is following a target vehicle at the presettime interval
Symbol for time interval to vehicles ahead
In cars equipped with the adaptive cruise control option, the driver can change between CC andACC - see "Change between Cruise control andadaptive cruise control".
Driver display
Indication of speeds 5
.
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 cruisecontrol".
Collision risk warning
Audio and symbol for collision warning
5
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 thecapacity of the foot brake. If the car needs to bebraked more heavily than the adaptive cruisecontrol is capable of and the driver does notbrake, the warning lamp and acoustic warning are
5 NOTE: The illustration is schematic - details may vary depending on car model.

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Deactivating/activating the adaptive cruise control *
The adaptive cruise control (Adaptive Cruise Control - ACC) can be temporarily deactivatedso that it is set in the standby mode and canlater 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 thespeedometer changes from BEIGE toGREY. In standby mode, the driver must him/herselfcontrol both speed and distance. When the adaptive cruise control is in standby mode and the car drives too close to a vehicleahead, the driver is warned about the short dis-tance by the Distance Warning function instead(see reference to the heading "Distance Warn-ing" at the end of this section).
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 thestored speed for longer than 1 minute.
• the clutch pedal is depressed for approx. 1minute - applies to cars with manual gearbox.
In this situation, the driver must intervene andadapt the speed and distance to the vehicleahead. A temporary increase in speed with the accelera- tor pedal, e.g. during overtaking, does not affectthe setting - the car returns to the last storedspeed when the accelerator pedal is released.
Automatic standby mode
Adaptive cruise control is dependent on other systems, e.g. stability control/anti-skid ESC. If anyof these systems stops working, adaptive cruisecontrol is switched off automatically. In the event of automatic deactivation a signal willsound and a message is shown in the driver dis-play. The driver must then intervene and adaptthe speed and distance to the vehicle ahead. Automatic deactivation may occur if:
• the speed is below 5 km/h (3 mph) and ACC is uncertain whether the vehicle ahead is astationary vehicle or an object, such as aspeed bump.
• the speed is below 5 km/h (3 mph) and thevehicle ahead turns off so that ACC nolonger has a vehicle to follow.
• speed is reduced to below 30 km/h(20 mph) - only applies to cars with manualgearbox.
• the driver opens the door
• the driver takes off the seatbelt
• engine speed is too low/high
• 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/radiowaves are blocked).

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–Activate the direction indicator. Use the left direction indicator in a car with the steering wheel on the left, or the rightdirection indicator in a car with the steeringwheel on the right.
> Overtaking assistance is started.
LimitationsWhen using Overtaking Assistance the driver should be prepared for sudden changes in condi-tions. In some conditions Overtaking Assistancecan cause unwanted acceleration. Some situations should be avoided for this rea- son. Examples of such situations are:
• the car is approaching an exit road in orderto turn off in the same direction that is nor-mally used for overtaking
• the vehicle in front slows before your car hasentered the overtaking lane
• traffic in the overtaking lane is slowing
• a car designed for right-hand traffic is beingdriven in a country with left-hand traffic (orvice versa).
Situations of this kind can be avoided by tempo-rarily setting ACC or Pilot Assist in standby mode.
Related information
• Pilot Assist
* (p. 304)
• Adaptive cruise control
* (p. 290)
Change of target and automatic braking with the Adaptive CruiseControl
In combination with automatic gearbox, the adaptive cruise control (Adaptive Cruise Control- ACC ) has functionality for change of targetand braking at certain speeds.
Change of target
If the target vehicle in front suddenly turns then there may be stationary traffic in front.
When the adaptive cruise control is following another vehicle at speeds below 30 km/h
(20 mph) and the target is changed from a mov- ing vehicle to a stationary vehicle, the adaptivecruise control will brake 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 stationaryvehicle, the adaptive cruise control will ignorethe stationary vehicle and instead select thestored 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 uncertainwhether the target object is a stationary vehi-cle or some other object, such as a speedbump.
• 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 tofollow.
Automatic brakingFor shorter stops in connection with inching inslow traffic or at traffic lights driving is automati-cally resumed if the stops do not exceed about3 seconds - if it takes longer before the car in
6
On left flash only in left-hand-drive car, or right flash in right-hand-drive car.

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DRIVER SUPPORT
* Option/accessory.
300 front starts moving again then the adaptive cruise control is set in standby mode with automaticbraking.
–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.
NOTE
ACC can keep the car stationary for a maxi- mum of 5 minutes. After this the parkingbrake is applied and adaptive cruise control isdisengaged. The parking brake must be released before the adaptive cruise control can be reactivated.
Cessation of automatic braking
In some situations, automatic braking ceases on reaching 0 km/h and Adaptive Cruise Control isset in standby mode. This means that the brakesare released and the car may start to roll - thedriver must therefore intervene and brake the carhimself/herself to keep it stationary. This may take place in the following situations:
• the driver puts his/her foot on the brakepedal
• the parking brake is applied
• the gear selector is moved to
P, N , or R posi-
tion
• the driver sets the adaptive cruise control inthe standby mode.
Automatic activation of parking brakeIn certain situations the parking brake is appliedto 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 morethan approx. 5 minutes
• the brakes have overheated
• the engine is switched off.
Related information
•
Adaptive cruise control
* (p. 290)
Limitations of the adaptive cruise control *
The (Adaptive Cruise Control - ACC) may have limitations in certain situations.
Steep roads and/or heavy loadBear in mind that the adaptive cruise control is primarily intended for use when driving on levelroad surfaces. The function may have difficulty inkeeping the correct distance from the vehicleahead when driving on steep downhill slopes - inwhich case, be extra attentive and ready to brake.Do not use the adaptive cruise control with aheavy load or with a trailer connected to the car.
Miscellaneous
• Drive mode Off Road cannot be selected
when the adaptive cruise control is activated.
NOTE
The function uses the car's radar unit, which has some general limitations, see the "Limita-tions for radar unit" section.
Related information
• Adaptive cruise control
* (p. 290)
• Limitations of the radar unit (p. 319)

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WARNING
Pilot Assist is an aid which cannot handle all traffic, weather and road conditions. The driver must always be observant with regard to the prevailing traffic conditions andintervene if Pilot Assist does not provide suit-able steering assistance or maintain a suita-ble speed or suitable time interval. Read all the sections about this function in the owner's manual in order to learn about itslimitations, of which the driver should beaware before the function is used. Pilot Assist must only be used if there are clear lane lines painted on the road surfaceon each side of the lane. All other useinvolves increased risk of contact with sur-rounding obstacles that are not detected bythe function. The driver always bears responsibility for how the car is controlled as well as for maintainingthe correct distance and speed, even whenPilot Assist is being used.
Pilot Assist regulates the speed with acceleration and braking. It is normal for the brakes to emit alow sound when they are being used to adjustthe speed. Pilot Assist attempts to regulate the speed smoothly. In situations that demand sudden brak-ing the driver must brake himself/herself. Thisapplies in case of large speed differences or ifthe vehicle in front brakes suddenly. Due to the limitations of the camera and radar unit, brakingmay come unexpectedly or not at all. Pilot Assist 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 frontthen the car will instead maintain the speed setand stored by the driver. This also takes place ifthe speed of the vehicle ahead increases andexceeds the stored speed. The following applies for cars with automatic gearbox:
• Pilot Assist can follow another vehicle atspeeds from 0 km/h up to 200 km/h(125 mph).
• Pilot Assist can give steering assistance fromalmost stationary up to 140 km/h (87 mph).
The following applies for cars with manual gear-box: • Pilot Assist can follow another vehicle at speeds from 30 km/h (20 mph) up to200 km/h (125 mph).
• Pilot Assist can give steering assistance from30 km/h (20 mph) up to 140 km/h(87 mph).
WARNING
Pilot Assist is not a collision avoidance sys- tem. The driver must intervene if the systemdoes not detect a vehicle in front. Pilot Assist does not brake for people, ani- mals, objects, small vehicles (e.g. cycles andmotorcycles), low trailers as well as oncoming,slow or stationary vehicles. Do not use Pilot Assist, for example, in city traffic, at junctions, on slippery surfaces, witha lot of water or slush on the road, in heavyrain/snow, in poor visibility, on winding roads,on slip roads, or with a trailer connected tothe car.
IMPORTANT
Maintenance of Pilot Assist components must only be performed at a workshop - an author-ised Volvo workshop is recommended.

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Overview
Controls
Buttons and symbols for functions9
.
Increases stored speed or reactivates Pilot Assist and resumes stored speed and timeinterval
Activates/deactivates Pilot Assist
Switches from Pilot Assist to adaptive cruise control
Reduces stored speed
Increases the distance to vehicles ahead
Switches from adaptive cruise control to Pilot Assist
Reduces the distance to vehicles ahead
Function symbol
Symbols for target vehicle and time interval to vehicles ahead
Symbol for activated/deactivated steering assistance
Driver display
Indication of speeds 9
.
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 Pilot Assist".
Collision risk warning
Audio and symbol for collision warning 9
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
Pilot Assist uses approx. 40% of the foot brake'scapacity. If the car needs to be braked moreheavily than Pilot Assist is capable of and thedriver does not brake, the warning lamp andacoustic warning are activated to alert the driverthat immediate intervention is required.
9 NOTE: The illustration is schematic - details may vary depending on car model.

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Deactivating/activating the Pilot Assist*
Pilot Assist can be temporarily deactivated so that it is set in the standby mode and can bereactivated later.
Deactivating and setting Pilot Assist in
standby mode
NOTE: The illustration is schematic - details may vary depending on car model.
To temporarily switch off Pilot Assist and set it in standby mode:
–Press the steering wheel button (2).
> Pilot Assist is set in standby mode - the symbol (8) in the driver display changes colour from WHITE to GREY and thestored speed in the centre of the speed-ometer changes from BEIGE to GREY.
...or...
–Press ◀ (3).
> Pilot Assist is switched off and changes to the adaptive cruise control in active mode.
In standby mode, the driver is no longer given anydriver steering recommendations and must con-trol both speed and distance him/herself. When Pilot Assist is in standby mode and the car drives too close to a vehicle ahead, the driver iswarned about the short distance by the DistanceWarning function instead (see reference to theheading "Distance Warning" at the end of thissection).
Standby mode on driver intervention
Pilot Assist is temporarily deactivated and set in standby mode if:
• the foot brake is used
• the gear selector is moved to
N position.
• the direction indicators are used for longerthan 1 minute .
• the driver maintains a speed higher than thestored speed for longer than 1 minute.
• the clutch pedal is depressed forapprox. 1 minute - applies to cars with man-ual gearbox.
A temporary increase in speed with the accelera-tor pedal, e.g. during overtaking, does not affectthe setting - the car returns to the last storedspeed when the accelerator pedal is released. When the direction indicators are used, PilotAssist steering assistance is temporarily disen-gaged. When this is no longer the case, steeringassistance is automatically reactivated if thelane's side markings can still be detected.

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Automatic standby mode
Pilot Assist is dependent on other systems, e.g. stability control/anti-skid ESC. If any of theseother systems stops working, Pilot Assist isswitched off automatically. In the event of automatic deactivation a signal will sound and a message is shown in the driver dis-play. The driver must then intervene and adaptthe speed and distance to the vehicle ahead. Automatic deactivation may occur if:
• the speed is below 5 km/h (3 mph) and Pilot Assist is uncertain whether the vehicle aheadis a stationary vehicle or an object, such as aspeed bump.
• the speed is below 5 km/h (3 mph) and thevehicle ahead turns off so that Pilot Assist nolonger has a vehicle to follow.
• speed is reduced to below 30 km/h(20 mph) - only applies to cars with manualgearbox.
• the driver's hands are not on the steeringwheel
• the driver opens the door
• the driver takes off the seatbelt
• engine speed is too low/high
• 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/radiowaves are blocked).
Reactivating Pilot Assist from the
standby mode
NOTE: The illustration is schematic - details may vary depending on car model.
–Press the steering wheel button (1).
> The speed is then set to the most recently stored speed.
NOTE
A marked speed increase may occur once the speed has been resumed by pressing steer- ing wheel button
.
Related information
• Pilot Assist
* (p. 304)
• Activating and starting the Pilot Assist
*
(p. 307)
• Managing the speed for Pilot Assist
* (p. 309)
• Setting the time interval for Pilot Assist
*
(p. 310)
• Change of target and automatic braking with Pilot Assist
* (p. 313)
• Overtaking assistance with the adaptivecruise control
* or Pilot Assist * (p. 298)
• Limitations of Pilot Assist
* (p. 314)
• Symbols and messages for Pilot Assist
*
(p. 316)
• Distance Warning
* (p. 288)

DRIVER SUPPORT
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* Option/accessory.313
Change of target and automatic braking with Pilot Assist *
In combination with automatic gearbox, Pilot Assist 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 Pilot Assist is following another vehicle at speeds below 30 km/h (20 mph) and changes
target from a moving to a stationary vehicle, Pilot Assist will slow down for the stationary vehicle.
WARNING
When Pilot Assist 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, PilotAssist will ignore the stationary vehicle andinstead select the stored speed.
• The driver must then intervene him/ herself and brake.
Automatic standby mode with change of target
Pilot Assist is disengaged and set in standby mode: •when the speed is below 5 km/h (3 mph) and Pilot Assist is uncertain whether the tar-get object is a stationary vehicle or someother object, e.g. a speed bump.
• when the speed is below 5 km/h (3 mph)and the vehicle in front turns off so the PilotAssist no longer has a vehicle to follow.
Automatic brakingFor shorter stops in connection with inching for-ward in slow traffic or at traffic lights, driving isautomatically resumed if the stops do not exceedabout 3 seconds - if it takes longer before thecar in front starts moving again then the PilotAssist is set in standby mode with automaticbraking.
–Pilot Assist is reactivated in the following way:
• Press the steering wheel button
.
• Depress the accelerator pedal.
> Pilot Assist resumes following the vehicle ahead if it starts moving forward within 6 seconds.
NOTE
Pilot Assist can hold the car stationary for a maximum of 5 minutes - then the parkingbrake is applied and the function is disen-gaged. Before Pilot Assist can be reactivated, the parking brake must be released.