2018 VOLVO XC90 T8 sensor

CLIMATE CONTROL
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* Option/accessory.207
Activating and deactivating the air
quality sensor *
The air quality sensor is part of the fully automa- ted Interior Air Quality System (IAQS).
The air quality sensor can be switched on or off. 1. Tap
Settings in the Top view in the center
display.
2. Tap
Climate.
3. Select
Air Quality Sensor to activate/deac-
tivate the air quality sensor.
Related information
• Interior Air Quality System
* (p. 206)
Passenger compartment air filter
All air entering the passenger compartment through the climate control system intake is fil-tered.
Replacing the passenger compartment filter
To maintain the high performance of the climate control system, the filter must be replaced regu-larly. Follow Volvo's service schedule for recom-mended replacement intervals. When driving inareas with a lot of smog, dust, etc., the filter mayneed to be changed more frequently.
NOTE
There are two types of passenger compart- ment filters. Make sure that the correct filteris installed.
Related information
• Air quality (p. 204)
• Clean Zone
* (p. 205)
• Clean Zone Interior Package
* (p. 206)
• Interior Air Quality System
* (p. 206)
Air distribution
The climate system distributes incoming air through a number of vents in the passengercompartment.
Automatic and manual air distributionWhen the auto-climate feature is on, air distribu- tion is regulated automatically. Air distribution canalso be controlled manually.
Adjustable air ventsCertain air vents in the vehicle are adjustable,which means they can be opened/closed and thedirection of the air flow from the vent can beadjusted.
Location of adjustable air vents in the passenger com- partment.
Five seats - four vents on the dashboard, two on the rear side of the tunnel console and

KEY, LOCKS AND ALARM
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* Option/accessory.265
Foot movement tailgate operation *
To make it easier to operate the tailgate when your hands are full, it can be opened and closedby moving your foot in a forward kicking motionunder the rear bumper.
The sensor is located to the left of center under the rear bumper 18
.
One of the vehicle's remote keys must be within range behind the vehicle (approx. 1 meter (3feet)) for opening and closing to be possible. Thisapplies even if the vehicle is unlocked in order toprevent the trunk lid from inadvertently openinge.g. at a car wash.
Foot movement operation
Kicking motion within the sensor's activation area.
–Make one slow forward kicking motion with
your foot under the left section of the rear bumper. Take a step back. Do not touch thebumper.
> A brief audible signal will be heard when opening or closing is activated - the tail- gate will open/close. If the tailgate is open, it will always close 19
when the foot motion sensor is activated.
If several opening attempts have been made without the remote key in range behind the vehi-cle, foot movement operation will not be availablefor a short period of time. Do not keep your foot under the vehicle in a kick-ing motion. This may prevent activation.
Interrupting opening or closing with a foot
movement
–Make
one slow forward kicking motion while
the tailgate is opening or closing to stop its movement.
The remote key does not need to be within rangeof the vehicle to interrupt opening or closing.
NOTE
There is a risk of reduced or lost function if there are large amounts of snow, ice, dirt, etc.on the rear bumper. Make sure to keep thebumper clean.
NOTE
Please note that the system could be inadver- tently activated in a car wash or similar if theremote key is within range.
Vehicle with skid plate accessory *If the vehicle is equipped with skid plate, the sen- sor is located towards the left corner of thebumper.
18
If the vehicle is equipped with skid plate *, the sensor is located towards the left corner of the bumper.
19 Applies to vehicles with power tailgate *.

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KEY, LOCKS AND ALARM
* Option/accessory.
266
To activate opening and closing using a foot movement on a vehicle with skid plate, make akicking motion from the side of the vehicle. Oneof the vehicle's remote keys must be within range(approx. 1 meter (3 feet)) for opening and closingto be possible.
Kicking motion within the sensor's activation area.
Related information
• Keyless and touch-sensitive surfaces
*
(p. 253)
• Opening and closing the power tailgate
*
(p. 261)
• Remote key range (p. 243)
Private Locking The glove compartment and the tailgate can be locked using the private locking function to pre-vent them from being opened, e.g. when thevehicle is left at a workshop or with a valet.
The function button for private locking is located in the centerdisplay's Function view.Depending on the current sta- tus of the lock,
Private
Locking Unlocked or Private
Locking Locked will be dis-
played.
Related information
• Activating and deactivating private locking (p. 267)

DRIVER SUPPORT
* Option/accessory.
272
Driver support systems
The vehicle is equipped with a number of driver support systems that can provide the driver withactive or passive assistance in various situations.
The system can, for example, help the driver maintain a set speed or a set time interval to thevehicle ahead, help prevent a collision by warningthe driver and applying the brakes, or assist thedriver while parking. Some of the systems are standard and others are options. This also varies from market to market.
Related information
• Speed-dependent steering wheel resistance(p. 272)
• Electronic Stability Control (p. 274)
• Stability system Roll Stability Control(p. 273)
• Rear Collision Warning (p. 347)
• Speed limiter (p. 278)
• Cruise control (p. 286)
• Distance Alert
* (p. 291)
• Adaptive Cruise Control
* (p. 295)
• Pilot Assist (p. 311)
• Radar sensor (p. 326)
• Camera (p. 331)
• City Safety
™ (p. 335)
• BLIS
* (p. 348) •
Cross Traffic Alert
* (p. 353)
• Road Sign Information
* (p. 357)
• Driver Alert Control (p. 362)
• Lane Keeping Aid (p. 364)
• Steering assistance at risk of collision(p. 372)
• Park Assist
* (p. 381)
• Park Assist Camera
* (p. 386)
• Park Assist Pilot
* (p. 395)
Speed-dependent steering wheelresistance
Speed-dependent power steering increases the steering wheel resistance in pace with the vehi-cle's speed to give the driver an enhanced feel-ing of control and stability.
Steering may feel stiffer on highways. When parking and at low speeds, it will be easier tomove the steering wheel.
NOTE
In some situations, the power steering may become too hot and require temporary cool-ing – during such time the power steering willwork at reduced output and the steeringwheel may feel more difficult to move. In parallel with the temporarily reduced steer- ing assistance, the driver display shows amessage as well as a STEERING WHEELsymbol.

DRIVER SUPPORT
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* Option/accessory.295
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 shorterdistance than the one that has been setor 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. 291)
Adaptive Cruise Control *
Adaptive Cruise Control (ACC 41
) 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 42
.
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 thereare no longer slower-moving vehicles ahead, thevehicle will return to the set speed.

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DRIVER SUPPORT
296
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.
Adaptive Cruise Control regulates speed by accelerating and braking. It is normal for the brakes 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.
41
Adaptive Cruise Control
42 Note: This illustration is general and details may vary depending on model.

DRIVER SUPPORT
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303
To temporarily deactivate Adaptive Cruise Control and put it in standby mode:
–Press the button on the steering wheel
(2). > The
symbol in the instrument panel
changes color from WHITE to GRAY and the set speed in the center of the speed-ometer will change from BEIGE to GRAY.
WARNING
• If Adaptive Cruise Control is in standby mode, the driver must intervene and regu-late both speed and distance to the vehicleahead.
• If the vehicle comes too close to a vehicleahead when Adaptive Cruise Control is instandby mode, the driver is instead warnedof the short distance by the Distance Alertfunction.
Standby mode due to action by the driver
Adaptive Cruise Control will be temporarily deac- tivated and put in standby mode if:
• the brakes are applied.
• the gear selector is moved to
N
• the vehicle is driven faster than the setspeed for more than 1 minute Temporarily increasing speed using the accelera-
tor pedal, e.g. when passing another vehicle, willnot affect the setting. The vehicle will return tothe set speed when the accelerator pedal isreleased.
Automatic standby mode
Adaptive Cruise Control is dependent on other systems, such as Electronic Stability Control (ESC 50
). If any of these other systems stops
working, Adaptive Cruise Control will automati- cally switch off.
WARNING
With automatic standby mode, the driver is warned by an acoustic signal and a messageon the instrument panel. • The driver must then regulate vehicle speed, apply the brakes if necessary, andmaintain a safe distance to other vehicles.
Adaptive Cruise Control may go into standbymode if: • your vehicle's speed goes below 5 km/h(3 mph) and ACC cannot determine if thevehicle ahead is stationary or if it is anotherobject, e.g. a speed bump.
• your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns so thatACC no longer has a vehicle to follow. •
the driver opens the door.
• the driver unbuckles the seat belt.
• the engine speed (rpm) is too low/high.
• one or more of the wheels lose traction.
• the brake temperature is high.
• the parking brake is applied.
• the camera/radar sensor is covered by snowor heavy rain (the camera lens/radar wavesare blocked)
Reactivating Adaptive Cruise Control
from standby mode
Note: This illustration is general and details may vary depending on model.
50 Electronic Stability Control

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DRIVER SUPPORT
* Option/accessory.
310
SymbolMessageMeaning
The symbol is WHITE. The vehicle is maintaining the set speed.
Adaptive cruise Unavailable
The symbol is GRAY. Adaptive Cruise Control is in standby mode.
Adaptive cruise Service required
The symbol is GRAY.
The system is not functioning as intended. Contact a workshop
‒ an authorized Volvo workshop is
recommended.
Windscreen sensor Sensor blocked, see Owner's manualClean the windshield in front of the camera and radar sensors.
A text message can be erased by briefly pressing the
button in the center of the right-side
steering wheel keypad. If the message persists: Contact a workshop ‒ an
authorized Volvo workshop is recommended.
Related information
• Adaptive Cruise Control
* (p. 295)