brake light VOLVO XC90 2017 Owner´s Manual

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DRIVER SUPPORT
* Option/accessory.
272
WARNING
Adaptive Cruise Control only warns of vehicles detected by the radar sensor. In some casesthere may be no warning or the warning maybe delayed. The driver should always apply thebrakes when necessary.
Head-up-display *
A flashing light alerts the driver
A flashing icon will appear in the head-up display to alert the driver of a collision risk.
NOTE
Strong sunlight, reflections, extreme light con- trasts, the use of sunglasses, or if the driver isnot looking straight ahead may make the vis-ual warning signal in the windshield difficult tosee.
Related information
•Starting and activating Adaptive Cruise Control (ACC)
* (p. 272)
• Changing Adaptive Cruise Control (ACC) speed (p. 275)
• Setting an Adaptive Cruise Control timeinterval (p. 276)
• Changing target vehicles and automaticbraking with Adaptive Cruise Control (ACC)(p. 277)
• Switching between Cruise Control and Adaptive Cruise Control
* (p. 266)
• Passing Assistance with Adaptive Cruise Control or Pilot Assist (p. 277)
• Deactivating/resuming Adaptive CruiseControl (ACC) (p. 273)
• Adaptive Cruise Control (ACC) - trouble-shooting (p. 279)
• Adaptive Cruise Control (ACC) symbols andmessages (p. 281)
• Pilot Assist
* (p. 283)
• Distance Alert
* (p. 267)
• Head-up display (HUD)
* (p. 116)
• Radar sensor limitations (p. 297)
Starting and activating Adaptive Cruise Control (ACC)
*
ACC must first be put in active mode before it can be started in order to regulate speed or aset time interval to the vehicle ahead.
Starting ACC (putting it in standby
mode)
Function buttons and symbols
–Press ◀ (2) or ▶ (3) to scroll to the ACC
(
) function. The symbol (4) will be dis-
played in the instrument panel.
> The symbol indicates that ACC has been
started and is in standby mode . In
standby mode, the vehicle will not main-
tain a set speed or a time interval to the vehicle ahead.

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DRIVER SUPPORT
* Option/accessory.
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WARNING
At speeds above 20 mph (30 km/h), if ACC
changes targets from a moving vehicle to a stationary one, the system will not react to the
stationary vehicle and will accelerate to the previously set speed. The driver must actively apply the brakes to slow/stop the vehicle.
Automatic standby mode when changing targets
ACC disengages and goes into standby mode if:
• your vehicle's speed goes below approx. 3 mph (5 km/h) and ACC cannot determineif the target object is a stationary vehicle orsome other type of object such as a speedbump, etc
• the vehicle's speed goes below approx.3 mph (5 km/h) and the vehicle aheadchanges lanes or turns so that ACC nolonger has a target vehicle to follow.
Auto-hold brake functionIn slow-moving, stop-and-go traffic or when stop-ped at a traffic light, driving will resume automati-cally if the vehicle is not stopped for more thanapprox. 3 seconds. If it takes more than3 seconds for the vehicle ahead to begin movingagain, ACC will go into standby mode and theauto-hold brake function will activate.
–The driver will then have to reactivate ACC in one of the following ways:
• Press the
button on the left-side
steering wheel keypad.
• Press the accelerator pedal.
> ACC will resume following the vehicle ahead (target vehicle) if it begins to move within approx. 6 seconds.
NOTE
ACC can keep the vehicle at a standstill for up to 5 minutes, after which the parking brakewill be set and ACC will go into standbymode. The parking brake has to be released before ACC can be reactivated.
Deactivation of the auto-hold brake function
In certain situations, auto-hold will be deactivated when the vehicle is at a standstill and ACC will gointo standby mode. This means that the brakes will be released and the vehicle can begin to roll. The driver must actively apply the brakes to keep the vehicle at a standstill. This can occur in the following situations: • the driver presses the brake pedal
• the parking brake is set •
the gear selector is moved to the
P, N or R
positions
• the driver puts ACC in standby mode.
Automatically setting the parking brakeIn certain situations, the parking brake is set automatically to help keep the vehicle at a stand-still. This occurs if ACC keeps the vehicle at a stand- still with the brakes and:
• the driver unbuckles the seat belt or opensthe door
• ACC has kept the vehicle at a standstill formore than approx. 5 minutes
• the brakes overheat
• the engine is turned off.
Related information
•
Adaptive Cruise Control (ACC)
* (p. 269)
• Auto-hold brake function (p. 356)
• Parking brake (p. 360)

DRIVER SUPPORT
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285
Function symbol
Distance and target vehicle symbol
Steering assistance symbol
Instrument panel
Speed indication (generic illustration)
Set speed
Speed of the vehicle ahead
Your vehicle's current speed.
See also the article "Pilot assist symbols and messages" for additional information.
Collision warning
Warning light in the windshield
Pilot Assist can exert brake force that is equiva- lent to approximately 40% of the vehicle's totalbraking capacity. In situations requiring more brake force than Pilot Assist can provide and if the driver does notapply the brakes, an audible signal and warninglight will illuminate in the windshield to alert thedriver to react.
NOTE
Strong sunlight, reflections, extreme light con- trasts, the use of sunglasses, or if the driver isnot looking straight ahead may make the vis-ual warning signal in the windshield difficult tosee.
WARNING
Pilot Assist only provides warnings for vehi- cles that its radar sensor and camera havedetected. For this reason, a warning may begiven later than expected or not at all. Thedriver should never wait for a warning beforeapplying the brakes.

DRIVER SUPPORT
* Option/accessory.
292 •
Setting a Pilot Assist time interval (p. 289)
• Changing target vehicles and automatic braking with Pilot Assist (p. 292)
• Passing Assistance with Adaptive CruiseControl or Pilot Assist (p. 277)
• Pilot Assist limitations (p. 293)
• Pilot Assist symbols and messages (p. 295)
• Distance Alert
* (p. 267)
Changing target vehicles and automatic braking with Pilot Assist
At certain speeds, Pilot Assist can change target vehicles and automatically apply the brakes.
Changing target vehicles
If the target vehicle turns suddenly, there may be a sta- tionary vehicle ahead
When Pilot Assist is actively following another vehicle at speeds under 20 mph (30 km/h) and
changes targets from a moving vehicle to a sta- tionary one, the system will brake for the station-ary vehicle.
WARNING
If Pilot Assist changes targets from a moving vehicle to a stationary one at speeds above
20 mph (30 km/h), the system will not react
to the stationary vehicle and will accelerate to the previously set speed. The driver must actively apply the brakes to slow/stop the vehicle.
Automatic standby mode when changing targets
Pilot Assist disengages and goes into standby mode if:
• your vehicle's speed goes below approx.3 mph (5 km/h) and Pilot Assist cannotdetermine if the target object is a stationaryvehicle or some other type of object such asa speed bump, etc
• the vehicle's speed goes below approx.3 mph (5 km/h) and the vehicle aheadchanges lanes or turns so that Pilot Assistno longer has a target vehicle to follow
Auto-hold brake functionIn slow-moving, stop-and-go traffic or when stop-ped at a traffic light, driving will resume automati-cally if the vehicle is not stopped for more thanapprox. 3 seconds. If it takes more than3 seconds for the vehicle ahead to begin movingagain, Pilot Assist will go into standby mode andthe auto-hold brake function will activate.

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DRIVER SUPPORT
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WARNING
Pilot Assist is not a collision avoidance sys- tem. The driver is always responsible forsteering or applying the brakes if the systemdoes not detect another vehicle. Do not use Pilot Assist in demanding driving conditions such as city driving or other heavytraffic situations, in slippery conditions, whenthere is a great deal of water or slush on theroad, during heavy rain or snow, in poor visibil-ity, on winding roads or on highway on- or off-ramps. In certain situations, it may be difficult for Pilot Assist to assist the driver correctly or to deac-tivate automatically. In such cases, it is advisa-ble not to use Pilot Assist. Examples of suchsituations may be:
• the lane's side market lines are missing, badly faded or cross each other.
• the division of lanes is not clear, e.g.,when a line divides or merges withanother, at exits or if there are many roadsigns/markers.
• there are edges or other lines on or nearthe lane, e.g., curbs, cracks, repairedareas, sharp shadows, etc.
• the lane is narrow or winding.
• the lane is at the top of a hill, on anuneven road surface or over a bump.
•bad weather conditions (rain, snow, fog, slush, poor visibility, backlighting, etc).
The driver should also be aware that Pilot Assist has the following limitations: • High curbs, barriers and temporary obsta- cles (cones, barriers etc) may not bedetected or could be detected incorrectlyas side marker lines, which may create arisk of collision. The driver must ensure asafe distance to these obstacles.
• The camera or radar sensor may not beable to detect objects if there are pot-holes or if there are stationary objectspartially or completely blocking the road.
• Pilot Assist does not "see" pedestrians,animals, etc.
• Pilot Assist's steering capacity is limitedand may not always be able to help thedriver keep the vehicle in the lane.
The driver can always take action to override PilotAssist.
Steep roads and/or heavy loadsPilot Assist is primarily intended for use on rela-tively level roads. The function may not be able tomaintain the correct time interval to the vehicleahead on when driving down steep hills. Thedriver should be attentive and prepared to applythe brakes in these situations. Do not use Pilot Assist when the vehicle is trans-porting a heavy load or if it is towing a trailer.
Additional information
•
The Off Road drive mode cannot be
selected if Pilot Assist is activated.
• Pilot Assist uses the vehicle's camera and radar sensor, which have certain general limi-tations. See the articles "Camera limitations"and "Radar sensor limitations" for additionalinformation.
Related information
•
Pilot Assist
* (p. 283)
• Starting and activating Pilot Assist (p. 286)
• Changing Pilot Assist speed (p. 288)
• Setting a Pilot Assist time interval (p. 289)
• Changing target vehicles and automaticbraking with Pilot Assist (p. 292)
• Deactivating/resuming Pilot Assist (p. 290)
• Passing Assistance with Adaptive CruiseControl or Pilot Assist (p. 277)
• Pilot Assist symbols and messages (p. 295)
• Radar sensor limitations (p. 297)
• Camera limitations (p. 301)

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DRIVER SUPPORT
306takes action. If the vehicle has slowed to avoid colliding with the vehicle ahead, your speed willbe reduced to that vehicle's speed. When auto-brake is triggered, the seat belt pre- tensioners may also be activated, see the article"Seat belts" for additional information. Auto-braking can be cancelled if the driver presses hard on the accelerator pedal. When City Safety applies the brakes, the brake lights will illuminate. When City Safety is triggered and applies the brakes, a text message will be displayed in theinstrument panel.
Related information
•
City Safety
™ troubleshooting (p. 310)
• City Safety in crossing traffic (p. 309)
• City Safety limitations (p. 312)
• City Safety symbols and messages (p. 315)
• Detecting obstructions with City Safety(p. 307)
• Rear Collision Warning (RCW) (p. 316)
• City Safety warning level settings (p. 306)
• City Safety in crossing traffic (p. 309)
• Seat belts (p. 60)
• City Safety when evasive action is not possi-ble (p. 310)
City Safety warning level settings
City Safety is always activated but the function's warning distance can be adjusted.
NOTE
City Safety cannot be turned off and activates automatically each time the engine is started.
Setting a warning level (distance)
The distance set for warnings determines the system's responsiveness and sets the distance atwhich visual, audible and tangible (haptic) warn-ings will be triggered. To do so:1. Tap
Settings in the center display's Top
view.
2. Tap
My CarIntelliSafeCity Safety
Warning.
3. Choose among
Earlier, Normal or Later.
Begin by choosing
Earlier. If too many warnings
are given, change to Normal.
If the driver feels that warnings are given too often, the warning level can be lowered. Thismeans that warnings will be provided later, result-ing in fewer warnings being given. The setting
Later should only used in exceptional
circumstances, e.g., for a more dynamic driving style.
WARNING
• No automatic system can be guaranteed to function 100% correctly in all situa-tions. For that reason, never test CitySafety by driving toward a person orobject. This could result in serious injuryor death.
• Even if the setting
Earlier has been
selected, warnings may be perceived as being given late, e.g., if the difference inspeed is great or if the vehicle aheadbrakes suddenly.
• City Safety can provide a warning for apotential collision but it can never shortenthe driver's reaction time.
• To help make City Safety as effective as possible, always using the setting
Earlieris recommended.
NOTE
•
Due to local traffic regulations in certain markets, Rear Collision Warning (RCW) will
not activate the rear turn signals.
That part of the function will be deacti- vated.
• The use of the rear turn signals will alsobe deactivated if the City Safety warning level is set at
Later. See also the section

DRIVER SUPPORT
* Option/accessory.337
Side park assist
The system's side sensors are activated automat- ically when the engine is started and are active atspeeds below approximately 6 mph (10 km/h). The distance monitored along the sides of the vehicle is approximately 1 ft (30 cm). The audiblesignal comes from the side speakers.
Front park assist
The system's front sensors are activated auto- matically when the engine is started and areactive at speeds below approximately 6 mph(10 km/h). The distance monitored in front of the vehicle is approximately 2.5 ft (80 cm). The audible signalcomes from the front speakers. Front Park Assist is deactivated if the parking brake is applied or if the gear selector is put in P.
When installing auxiliary headlights, be sure that they do not obstruct the front sensors. Otherwise,these lights could trigger a Park Assist warning.
Related information
• Activating/deactivating Park Assist (p. 337)
• Park Assist limitations (p. 338)
• Park assist symbols and messages (p. 339)
Activating/deactivating Park Assist
The Park Assist system can be turned on or off.
On/OffPark Assist's front and side sensors are activated automatically when the engine is started. Therear sensors activate if the vehicle rolls rearward in N or if R is selected.
This function can be activated/ deactivated in the center dis-play's Function view.
–Tap the Park Assist button.
> Green indicator: the function is active. Gray indicator: the function is deactivated.
Related information
• Park Assist
* (p. 336)
• Park Assist limitations (p. 338)
• Park assist symbols and messages (p. 339)

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DRIVER SUPPORT
* Option/accessory.
346
Dark camera sectors
A dark camera sector may also be displayed in the following situations but without the defective
camera symbol. A sector may be dark because: • the door mirror is folded in
• the door is open
• the tailgate is open
Ambient lightingThe camera images are adjusted automatically to the ambient light, which means the image mayvary slightly in terms of light and quality. Poorambient lighting may reduce the quality of theimage.
Maintenance
•Keep the camera's lens free of dirt, ice andsnow. This is particularly important in poorambient lighting conditions.
• Remove dirt, ice and snow carefully to avoidscratching the lenses.
• Clean the lens regularly with warm water anda suitable car washing detergent.
Related information
•
Park Assist Camera (PAC)
* (p. 340)
Park Assist Pilot (PAP) *
Park Assist Pilot (PAP) helps the driver drive into parallel or perpendicular parking spaces andleave parallel parking spaces.
Park Assist Pilot provides assistance when park- ing by measuring the parking space and turningthe steering wheel to guide the vehicle into thespace. Information about the actions required by the driver is provided in the center display in the formof symbols, images and text.
NOTE
While PAP is active, the driver's task is to:
• carefully monitor the area around the vehicle
• follow the instructions provided in thecenter display
• select a gear (
D or R) when prompted
• regulate the vehicle's speed
• apply the brakes when necessary andstop the vehicle
Types of parking
Parallel parking
Procedure for parallel parking
PAP helps park the vehicle as follows:
1. The system searches for and measures a
possible parking space. While this is being done, the vehicle's speed may not exceedapprox. 20 mph ( 30 km/h). When backinginto a space, the speed may not exceedapprox. 4 mph ( 7 km/h).
2. The vehicle is steered while it is backing into the parking space. The driver controls thevehicle's speed.
3. The vehicle's position in the parking space is adjusted by prompting the driver to move for-ward and rearward while the system steers.

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DRIVER SUPPORT
* Option/accessory.
350 adjusted by driving slightly forward and backing up. 1.
Put the gear selector in D, wait until the
steering wheel has turned and drive forward slowly.
2. Stop the vehicle when you are instructed by PAP to do so.
3. Put the gear selector in R, back up slowly
and stop when you are instructed by PAP todo so.
When the parking procedure is finished (this willbe indicated by a text message and a graphicimage), PAP switches off automatically. If neces-sary, the driver may need to make minor adjust-ments to ensure that the vehicle is parked cor-rectly.
CAUTION
The warning distance is shorter when PAP is using the sensors than when Park Assist isusing them.
Leaving a parking spaceThis function can only be used for a vehicle that has been par-
allel parked and is activated in
the center display's Function view.
1. Tap the Park out button in the center display's
Function view. 2. Use the turn signal to indicate the direction in which the vehicle should leave the parking space. 3. Follow the instructions provided in the center display. The procedure is the same as when park-ing the vehicle. The steering wheel may turn back slightly when the function is completed and the driver mayhave to turn the back before leaving the parkingspace. If PAP determines that the driver can leave the parking space without assistance, the functionwill deactivate before the vehicle is completelyout of the space.
Related information
• Park Assist Pilot (PAP)
* (p. 346)
• Park Assist Pilot (PAP)
* limitations (p. 350)
• Park Assist Pilot (PAP)
* symbols and mes-
sages (p. 352)
Park Assist Pilot (PAP) * limitations
The PAP function may be limited in certain situa- tions.
The PAP parking sequence is cancelledA parking sequence will be cancelled:
• if the vehicle is driven too fast: above approx. 4 mph (7 km/h)
• if the driver taps
Cancel in the center display
• if the driver moves the steering wheel with sufficient force.
• if the anti-lock brakes or Electronic StabilityControl are activated (e.g., if a wheel beginsto spin or lose traction)
In such cases, a text message will explain whythe parking sequence was cancelled.
NOTE
• PAP will not function correctly if its sen- sors are obstructed by dirt, snow, etc.
• In certain situations, PAP may not be ableto measure a parking space. This couldbe due to external sources of sound (e.g.,a vehicle's horn, tires on wet asphalt,pneumatic brakes, noise from a motorcy-cle's exhaust, etc.) emitting ultrasoundusing approximately the same frequen-cies as PAP.

STARTING AND DRIVING
* Option/accessory.
354
Starting and driving The vehicle is equipped with features that sup- plement its basic functions, such as shifting gears with steering wheel paddles * and the fuel-
conserving start/stop function.
The vehicle is equipped with an automatic trans- mission that also makes it possible to shift gearsmanually. Certain functions can also be used when the engine is not running, depending on the ignitionmode being used.
Related information
• Starting the engine (p. 382)
• Ignition modes (p. 380)
• Automatic transmission (p. 392)
• Opening/closing the fuel filler door (p. 373)
• Start/Stop (p. 389)
• Parking brake (p. 360)
Brakes The brake system is a hydraulic system consist- ing of two separate brake circuits. If a problemshould occur in one of these circuits, it is stillpossible to stop the vehicle with the other brakecircuit.
Brake systemIf one of the brake circuits is not functioning, more pressure will be needed on the brake pedal(and the pedal will go down farther) for normalbraking effect. If the brake pedal must be depressed farther than normal and requires greater foot pressure,the stopping distance will be longer. Pressure on the brake pedal is enhanced by the power braking function. The power brakes only function when the engine is running. If the power brakes are not working, considerably higher pressure will be required on the brakepedal to compensate for the lack of power assis-tance. This can happen for example when towingyour vehicle or if the engine is switched off whenthe vehicle is rolling. The brake pedal feels stifferthan usual. When the Hill Start Assist function is being used, it will take slightly longer for the brake pedal toreturn to its normal position if the vehicle isparked on an incline or uneven surface. When driving in very hilly areas or if the vehicle iscarrying a heavy load, manual gear shifting canbe used for engine braking to augment the brakes. Use the
Off Road*
drive mode on steep
downgrades to increase the engine braking effect at low speeds.
Anti-lock Braking System ABS
The ABS system helps to improve vehicle control (stopping and steering) during severe brakingconditions by limiting brake lockup. When ABS is operating, there may be some vibration in the brake pedal, which is normal. The system performs a brief self-diagnostic test when the engine has been started and driverreleases the brake pedal. Another automatic testmay be performed when the vehicle first reachesa speed of approximately 6 mph (10 km/h). Thebrake pedal will pulsate several times and asound may be audible from the ABS controlmodule, which is normal.
Cleaning the brake discsCoatings of dirt and water on the brake discsmay result in delayed brake function. This delay isminimized by cleaning the brake linings. Cleaning the brake pads is advisable in wet weather, prior to long-term parking, and after thevehicle has been washed. Do this by braking gen-tly for a short period while the vehicle is moving.