2017 VOLVO V90 steering wheel

DRIVER SUPPORT
* Option/accessory.
304
Pilot Assist *
Pilot Assist helps the driver to drive the car between the lane's side markings using steeringassistance as well as to maintain an even speed,combined with a preselected time interval to thevehicle ahead.
The Pilot Assist function gives more comfortable driving and a more relaxed driving experienceduring, for example, long journeys on motorwaysin even traffic flows.
The camera and radar unit measures the distance to the vehicle ahead and detects side markings 9
.
Camera and radar unit
Distance readers
Readers, side markings The driver selects the desired speed and a time interval to the vehicle ahead. Pilot Assist scansthe distance to the vehicle ahead and the lane'sside markings on the road surface using thecamera and radar unit. The preset time interval ismaintained with automatic speed adjustmentwhilst the steering assistance helps to positionthe car in the lane. Pilot Assist steering assistance takes into account the speed of the preceding car and thelane markings. The driver can at any time ignorethe Pilot Assist steering recommendation andsteer in another direction, e.g. to change lane oravoid an obstruction on the road. If Pilot Assist cannot interpret the lane unambig- uously, e.g. if the camera and radar unit does notsee the lane's side markings, Pilot Assist tempo-rarily deactivates steering assistance, butresumes it if the lane can be interpreted again -although the speed and distance control func-tions remain active.
NOTE
Pilot Assist steering assistance is deactivated and is resumed without prior warning.
The current status of steering assistance is indicated by thecolour of the steering wheel'ssymbol: • GREEN steering wheel indi- cates active steering assis-
tance • GREY steering wheel (as in illustration) indi- cates deactivated steering assistance.
9 NOTE: The illustration is schematic - details may vary depending on car model.

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DRIVER SUPPORT
* Option/accessory.
308 With the adaptive cruise control in the standby mode: 1.
Press
▶ (6).
> The
symbol changes to Pilot Assist
in standby mode (8).
2. Press the steering wheel button
(2).
> Pilot Assist is started and current speed is stored, which is shown with figures in the centre of the speedometer.
...or... With the adaptive cruise control started:
–Press ▶ (6).
> Pilot Assist is started.
Pilot Assist steering assistance is only active when the steeringwheel symbol (2) has changedfrom GREY to GREEN. Pilot Assist only regulates the time interval to the vehicle
ahead when the distance symbol shows a vehicle(1) above the steering wheel symbol.
At the same time a speed range is marked. The higher speed is the stored/selected speed and thelower speed is that of the vehi-cle ahead (target vehicle).
Hands on the steering wheelIn order for Pilot Assist to function, the driver must have his/her hands on the steering wheel.The system continually monitors this. If hands arenot detected on the steering wheel then a textmessage is shown, prompting the driver toactively steer the car. If this is not done, anacoustic warning signal will also be given. If that does not prompt the driver to put his/her hands on the steering wheel either, Pilot Assistchanges to standby mode. Following which, PilotAssist must be restarted with the steering wheel button
.
NOTE
Note that Pilot Assist only works when the driver has hands on the steering wheel.
Related information
• Pilot Assist
* (p. 304)
• 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)
• Deactivating/activating the Pilot Assist
*
(p. 311) •
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)

DRIVER SUPPORT
* Option/accessory.309
Managing the speed for Pilot Assist*
Pilot Assist can be set to different speeds.
NOTE: The illustration is schematic - details may vary depending on car model.
–Change the stored speed with short or long presses on steering wheel button
(1) or
- (3):
• Use
short presses to adjust +/- 5 km/h
(+/- 5 mph) with each press.
• Hold the button depressed
to adjust
+/- 1 km/h (+/- 1 mph) and release
when the driver display's marking (4) is at
the desired speed .
> The speed set after the last press is stored in the memory.
If the driver increases the car

DRIVER SUPPORT
* Option/accessory.
310
Setting the time interval for Pilot Assist *
Pilot Assist can be set with different time inter- vals.
Different time intervals to the vehicle in front can be selectedand shown in the driver displayas 1-5 horizontal lines - themore lines the longer the timeinterval. One line representsabout 1 second to the vehicle
in front, 5 lines represents about 3 seconds.
NOTE
When the symbol in the driver display shows a car and a steering wheel, Pilot Assist fol-lows a vehicle in front at a preset time gap. When only one steering wheel is shown, there is no vehicle within a reasonable distanceahead.
Control for time interval.
Decrease time interval
Increase time interval
Distance indicator
–Press the steering wheel button (1) or (2) to increase or decrease the time interval.
> The distance indicator (3) shows the cur- rent time interval.
In order to follow the vehicle ahead in a smooth and comfortable way, Pilot Assist allows the timeinterval to vary noticeably in certain conditions.For example, at low speed, when the distancesbecome short, Pilot Assist increases the timeinterval slightly. Note that a short time interval only allows the driver a short time to react and take action if anyunforeseen problem should arise.
NOTE
Only use the time intervals permitted by local traffic regulations. If Pilot Assist does not appear to react when activated, this may be because the time dis-tance to the vehicle in front is preventing anincrease in speed. The higher the speed the longer the calcula- ted distance in metres for a given time inter-val.
Related information
• Pilot Assist
* (p. 304)
• Activating and starting the Pilot Assist
*
(p. 307)
• Managing the speed for Pilot Assist
* (p. 309)
• Change of target and automatic braking with Pilot Assist
* (p. 313)
• Deactivating/activating the Pilot Assist
*
(p. 311)
• 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
}}
* Option/accessory.311
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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DRIVER SUPPORT
* Option/accessory.
312
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
}}
* 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.

DRIVER SUPPORT
}}
* Option/accessory.315
IMPORTANT
In certain situations, Pilot Assist steering assistance may have difficulty helping thedriver in the right way or it may be automati-cally deactivated - in which case, the use ofPilot Assist is not recommended. Examples ofsuch situations may be that: •the lane markings are worn, missing or cross each other.
• lane division is unclear, for example, whenthe lanes divide or merge or at exits or inthe event of multiple sets of markings.
• edges or other lines than lane markingsare present on or near the road, e.g.curbs, joints or repairs to the road sur-face, edges of barriers, roadside edges orstrong shadows.
• the lane is narrow or winding.
• the lane contains ridges or holes.
• weather conditions are poor, e.g. rain,snow or fog or slush or impaired viewwith poor light conditions, back-lighting,wet road surface etc.
The driver should also note that Pilot Assisthas the following limitations: • High kerbs, roadside barriers, temporary obstacles (traffic cones, safety barriers,etc.) are not detected. Alternatively, theymay be detected incorrectly as lane
markings, with a subsequent risk of con- tact between the car and such obstacles.The driver must ensure him/herself thatthe car is at a suitable distance from suchobstacles.
• The camera and radar sensor does nothave the capacity to detect all oncomingobjects and obstacles in traffic environ-ments, e.g. potholes, stationary obstaclesor objects which completely or partiallyblock the route.
• Pilot Assist does not "see" pedestrians,animals, etc.
• The recommended steering input is forcelimited, which means that it cannotalways help the driver to steer and keepthe car within the lane.
The driver always has the possibility of correcting or adjusting a steering intervention imposed byPilot Assist and can turn the steering wheel tothe desired position.
Steep roads and/or heavy loadBear in mind that Pilot Assist is primarilyintended for use when driving on level road surfa-ces. The function may have difficulty in keepingthe correct distance from the vehicle ahead whendriving on steep downhill slopes - in which case,be extra attentive and ready to brake. Do not usePilot Assist with a heavy load or with a trailer con-nected to the car.
Miscellaneous
•Off Road drive mode cannot be selected
when Pilot Assist is activated.
NOTE
The function uses the car's camera unit, which has some general limitations, see the"Limitations for camera unit" section.
NOTE
The function uses the car's radar unit, which has some general limitations, see the "Limita-tions for radar unit" section.
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)
• Deactivating/activating the Pilot Assist
*
(p. 311)
• Overtaking assistance with the adaptivecruise control
* or Pilot Assist * (p. 298)