2018 VOLVO V90 light

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DRIVER SUPPORT
* Option/accessory.
286
WARNING
Distance Alert only reacts of the time interval to the vehicle ahead is shorter than the presetvalue – vehicle speed is not affected.
NOTE
Depending on market, this function may be either Standard or Optional.
Related information
• Head-up display for Distance Alert (p. 286)
• Activating/deactivating Distance Alert (p. 287)
• Setting a time interval for Distance Alert(p. 287)
• Distance Alert limitations (p. 288)
Head-up display for Distance Alert35
In vehicles equipped with a head-up display *, a
symbol will be displayed on the windshield as long as the time interval to the vehicle ahead isshorter than the set time interval.
Distance Alert warning symbol on the windshield 36
.
For this to be possible, however, the Show
Driver Support function must be activated
under Settings in the center display's menus (see "Head-up display" for instructions).
NOTE
Visual warnings on the windshield may be dif- ficult to notice in cases of strong sunlight,reflections, extreme light contrasts, or if thedriver is wearing sunglasses or is not lookingstraight ahead.
Related information
• Distance Alert
* (p. 285)
• Head-up display
* (p. 144)
35
The Distance Alert function is only available in vehicles that can display information on the windshield with a head-up display.
36 Note: This illustration is general and details may vary depending on model.

DRIVER SUPPORT
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* Option/accessory.287
Activating/deactivating Distance
Alert37
It is possible to set time intervals for Distance Alert or to turn the function off.
On/OffPress the Distance Alert but-
ton in the center display's Function view.
• GREEN button indicator light - Distance Alert is on.
• GRAY button indicator light - Distance Alertis off.
Distance Alert is automatically activated eachtime the engine is started.
Related information
• Distance Alert
* (p. 285)
Setting a time interval for Distance
Alert38
The Distance Alert function can be set to differ- ent time intervals.
Different time intervals to the vehicle ahead can be selectedand are shown in the instru-ment panel as 1–5 horizontalbars. The more bars, the longerthe time interval. One bar rep-resents an interval of
approx. 1 second to the vehicle ahead. 5 barsrepresents approx. 3 seconds.
The same symbol appears when the Adaptive Cruise Control function is activated.
Controls for setting a time interval.
Reduce the time interval
Increase the time interval
Distance indicator
–Press the (1) or (2) button to decrease or increase the time interval.
> The distance indicator (3) shows the cur- rent time interval.
37The Distance Alert function is only available in vehicles that can display information on the windshield with a head-up display.
38 The Distance Alert function is only available in vehicles that can display information on the windshield with a head-up display.

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DRIVER SUPPORT
* Option/accessory.
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NOTE
• The greater the vehicles' speed, the greater the distance between them for aset time interval.
• Only use the time intervals permitted bylocal traffic regulations.
• The set time interval is also used by theAdaptive Cruise Control and Pilot Assistfunctions.
WARNING
•Only use a time interval suitable for the current traffic conditions.
• The driver should be aware that shorttime intervals give them limited time toreact and act to any unforeseen trafficsituation.
Related information
•
Distance Alert
* (p. 285)
Distance Alert limitations39
Distance Alert functionality may be reduced in certain situations.WARNING
• The radar sensor has a limited field of vision. In some situations, it may detect avehicle later than expected or not detectother vehicles at all.
• The radar sensor cannot cover all drivingsituations and traffic, weather and roadconditions.
• The driver is responsible for maintaining asafe distance and speed and must inter-vene if the various driver support systemsdo not maintain a suitable speed or suita-ble distance to the vehicle ahead.
• Maintenance of radar sensor componentsmay only be performed by a trained andqualified Volvo technician.
• Strong sunlight, reflections from the roadsurface, strong lighting contrasts or usingsunglasses may make the warning light inthe windshield difficult to see. Poorweather or winding roads can affect theradar sensor's capacity to detect vehiclesahead.
• A vehicle's size (e.g., a motorcycle) canalso affect the radar sensor's capacity todetect another vehicle. This may result inthe warning light illuminating at a shorter
39
The Distance Alert function is only available in vehicles that can display information on the windshield with a head-up display.

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* Option/accessory.289
distance than the one that has been set or not illuminating at all.
• High speeds may also result in the warn-ing light illuminating at a shorter distancethan the one that has been set due tolimitations in the radar sensor's range.
NOTE
The function uses the vehicle's radar unit, which has some general limitations – see thesection "Radar unit limitations".
Related information
•
Distance Alert
* (p. 285)
Adaptive Cruise Control *
Adaptive Cruise Control (ACC 40
) helps the
driver maintain a constant speed with a set time interval to the vehicle ahead.
Adaptive Cruise Control helps provide a more relaxed driving experience on long trips on high-ways or long, straight roads with even trafficflows.
The camera/radar sensor measures the distance to the vehicle ahead 41
.
The driver sets a speed and a time interval to the vehicle ahead. If the camera/radar sensor detects a slower-moving vehicle ahead, your vehicle's speed will be automatically adapted according to the set time interval to that vehicle. When there are no longer slower-moving vehicles ahead, thevehicle will return to the set speed.
WARNING
•
The Adaptive Cruise Control function is supplementary driver support intended tofacilitate driving and help make it safer –it cannot handle all situations in all traffic,weather and road conditions.
• The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion (see the link list at the end of thisarticle).
• Adaptive Cruise Control is not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.
NOTE
Depending on market, this function may be either Standard or Optional.
40
Adaptive Cruise Control
41 Note: This illustration is general and details may vary depending on model.

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DRIVER SUPPORT
290Adaptive Cruise Control regulates speed by accelerating and braking. It is normal for thebrakes to emit a slight sound when they arebeing used to adjust speed. Adaptive Cruise Control always attempts to regu- late speed smoothly. The driver must apply thebrakes in situations requiring immediate braking.For example, when there are great differences inspeed between vehicles or if the vehicle aheadbrakes suddenly. Due to limitations in the radarsensor, braking may occur unexpectedly or not atall. Adaptive Cruise Control is designed to follow a vehicle ahead in the same lane and maintain atime interval to that vehicle set by the driver. If theradar sensor does not detect a vehicle ahead, itwill instead maintain the speed set by the driver.This will also happen if the speed of the vehicleahead exceeds the set speed for your vehicle.
• Adaptive Cruise Control can follow anothervehicle at speeds from a standstill up to200 km/h (125 mph).
WARNING
• Adaptive Cruise Control is not a collision avoidance system. The driver is alwaysresponsible and must intervene if the sys-tem fails to detect a vehicle ahead.
• Adaptive Cruise Control does not brakefor people or animals and does not brakefor small vehicles, such as bikes andmotorcycles. Similarly, it does not brakefor low trailers, oncoming, slow-moving orstationary vehicles and objects.
• Do not use Adaptive Cruise Control indemanding situations, such as in city traf-fic, at intersections, on slippery surfaces,with a lot of water or slush on the road, inheavy rain/snow, in poor visibility, onwinding roads, or on on/off ramps.
CAUTION
Maintenance of Adaptive Cruise Control com- ponents may only be performed by a work-shop – an authorized Volvo workshop is rec-ommended.
Overview
Controls
Function buttons and symbols 41
.
: Activates Adaptive Cruise Control from
standby mode and resumes the set speed
: Increases the set speed
: From standby mode - activates the
Adaptive Cruise Control and stores the cur- rent speed
: From active mode - deactivates/
switches the Adaptive Cruise Control to standby mode
: Reduces the set speed
Increases the time interval to the vehicle ahead
41 Note: This illustration is general and details may vary depending on model.

DRIVER SUPPORT
* Option/accessory.
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Adaptive Cruise Control andcollision warning
Collision warning audible signal and symbol 42
.
Acoustic collision warning signal
Collision warning symbol
Camera/radar sensor distance monitoring
Adaptive Cruise Control utilizes approx. 40% of the vehicle's braking capacity. If a situationrequires more braking force than the AdaptiveCruise Control can provide, and if the driver doesnot apply the brakes, a warning light and audiblewarning signal will be activated to alert the driverthat immediate action is required.
WARNING
Adaptive Cruise Control only issues a warning for vehicles detected by its radar unit – thus, awarning may come after a delay or not at all.
• Never wait for a warning. Apply the brakes when necessary.
Related information
•
Adaptive Cruise Control
* (p. 289)
Head-up display for Adaptive CruiseControl with collision warning
In vehicles equipped with a head-up display *, a
flashing warning symbol will be displayed on the windshield.
Collision warning symbol on the windshield 43
.
NOTE
Visual warnings on the windshield may be dif- ficult to notice in cases of strong sunlight,reflections, extreme light contrasts, or if thedriver is wearing sunglasses or is not lookingstraight ahead.
Related information
• Adaptive Cruise Control
* (p. 289)
42
Note: This illustration is general and details may vary depending on model.
43 Note: This illustration is general and details may vary depending on model.

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Setting Adaptive Cruise Controltime intervals Adaptive Cruise Control (ACC 46
) can be set to
various time intervals to the vehicle ahead.
Different time intervals to the vehicle ahead can be selectedand are shown in the instru-ment panel as 1–5 horizontalbars. The more bars, the longerthe time interval. One bar rep-resents an interval of
approx. 1 second to the vehicle ahead. 5 barsrepresents approx. 3 seconds. The same symbol appears when the Distance Alert function is activated.
NOTE
When the symbol in the instrument panel shows two vehicles, ACC is following the vehi-cle ahead at a preset time interval. When only one vehicle is shown, there is no vehicle ahead within a reasonable distance.
Controls for setting a time interval 47
.
Reduce the time interval
Increase the time interval
Distance indicator
–Press the (1) or (2) button to decrease or increase the time interval.
> The distance indicator (3) shows the cur-
rent time interval.
In order to help your vehicle follow the vehicle ahead as smoothly and comfortably as possible,Adaptive Cruise Control allows the time intervalto vary noticeably in certain situations. At lowspeeds, when the distance to the vehicle aheadis short, Adaptive Cruise Control increases thetime interval slightly.
NOTE
• The greater the vehicles' speed, the greater the distance between them for aset time interval.
• Only use the time intervals permitted bylocal traffic regulations.
• If the Adaptive Cruise Control does notseem to respond with a speed increasewhen activated, it may be because thetime interval to the vehicle ahead isshorter than the set time interval.
WARNING
•Only use a time interval suitable for the current traffic conditions.
• The driver should be aware that shorttime intervals give them limited time toreact and act to any unforeseen trafficsituation.
Setting how ACC should maintain distance
* to the vehicle ahead
A number of different settings can be made for how Adaptive Cruise Control should maintain atime interval to the vehicle ahead. Settings are made using the DRIVE MODE controls.
46
Adaptive Cruise Control
47 Note: This illustration is general and details may vary depending on model.

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Switching target vehicles withAdaptive Cruise Control
At certain speeds, models with automatic trans- missions and Adaptive Cruise Control (ACC 53
)
can switch target vehicles.
Switching target vehicles
If the target vehicle ahead turns suddenly, there may be stationary traffic ahead.
When Adaptive Cruise Control is actively follow- ing another vehicle at speeds under 30 km/h
(20 mph) and switches targets from a moving vehicle to a stationary vehicle, Adaptive CruiseControl will brake for the stationary vehicle.
WARNING
When Adaptive Cruise Control follows another vehicle at speeds over approx. 30 km/h
(20 mph) and changes target vehicle – from a moving vehicle to a stationary one – Adaptive Cruise Control will ignore the stationary vehi-
cle and instead accelerate to the stored speed. • The driver must then intervene and apply the brakes.
Automatic standby mode when switching
targets
Adaptive Cruise Control will be disabled and go into standby mode:
• if your vehicle's speed goes below 5 km/h(3 mph) and Adaptive Cruise Control cannotdetermine if the target object is a stationaryvehicle or another object, e.g. a speed bump.
• if your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns so thatAdaptive Cruise Control no longer has a vehi-cle to follow.
Related information
•
Adaptive Cruise Control
* (p. 289)
Automatic braking with AdaptiveCruise Control The Adaptive cruise control (ACC 54
) has a spe-
cial brake function in slow traffic and while sta- tionary.
Braking function in slow traffic and at a standstill
In slow-moving, stop-and-go traffic or when stop- ped at a traffic light, driving will resume automati-cally if the vehicle is stopped for less thanapprox. 3 seconds. If it takes more than 3 sec-onds for the vehicle ahead to begin moving again,Adaptive Cruise Control will go into standbymode and the Auto-hold brake function will acti-vate.
–Adaptive Cruise Control can be reactivated in one of the following ways:
• Pressing the
button on the steering
wheel keypad.
• Pressing the accelerator pedal.
> Adaptive Cruise Control will resume fol- lowing the vehicle ahead if it begins to move within approx. 6 seconds.
53Adaptive Cruise Control
54 Adaptive Cruise Control