2018 VOLVO XC90 fog light

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LIGHTING
* Option/accessory.
162 ignition or when the lighting ring is turned to the
position.
NOTE
Regulations concerning fog light use vary from country to country.
Cornering illumination
*The front fog lamps can include the cornering lights function, which temporarily illuminates thearea diagonally in front of the car in the directionthe steering wheel is turned on a sharp bend, orin the direction shown by the direction indicators. The function is activated in weak daylight or dark conditions when the lighting ring is in
or
mode and the vehicle speed is less than
about 30 km/h (about 20 mph). Both cornering illumination are also illuminated as a complement to the taillights when reversing. The function is activated as the default factory setting and can be activated and deactivatedusing the center display.
Related information
• Lighting panel and controls (p. 154)
• Ignition modes (p. 407)
• Rear fog light (p. 162)
• Active Bending Lights
* (p. 161) •
Adjusting light functions via the center dis-play (p. 155)
Rear fog light
The rear fog light is considerably brighter than ordinary taillights and should only be used tohelp other road users see the vehicle when visi-bility is reduced by conditions such as fog,snow, smoke or dust.
Rear fog light button.
The rear fog light consists of a light on the rear of the vehicle on the driver's side. The rear fog light can only be used when:
• the ignition is in
II mode or when the engine
is running and the lighting ring is in position
or .
• the lighting ring is in the
position and
the front fog lights are on.

LIGHTING
* Option/accessory.163
Press the button for On/Off. The
symbol in
the instrument panel illuminates when the rear fog light is on. The rear fog light turns off automatically when:
• the start knob is turned clockwise to turn off the ignition or when the lighting ring is turned to the
position.
• the lighting ring is in the
position and
the front fog lights are turned off.
NOTE
Regulations concerning rear fog light use vary from country to country.
Related information
• Lighting panel and controls (p. 154)
• Front fog lights/cornering illumination
*
(p. 161)
• Ignition modes (p. 407)
Brake lights The brake lights are automatically illuminated when braking.
The brake lights illuminate when the brake pedal is depressed. They also illuminate when thebrakes are automatically applied by one of thedriver support systems.
Related information
• Emergency brake lights (p. 163)
• Brake functions (p. 408)
Emergency brake lights
The emergency brake lights are activated to warn following vehicles of hard braking. This function causes an additional taillight on each side of the vehicle to illuminate.
The emergency brake lights are activated in the event of hard braking or if the ABS system isactivated and the vehicle is traveling at a highspeed. After the driver decelerates to a low speed and then releases the brake, the brake lights resumetheir normal brightness.
Related information
• Brake lights (p. 163)
• Brakes (p. 409)
• Hazard warning flashers (p. 164)

CLIMATE CONTROL
224
Activating and deactivatingrecirculation
The climate system's recirculation function helps shut out smog, smoke, exhaust fumes, etc. byreusing the air in the passenger compartment.
Air recirculation button in Climate view.
1. Open Climate view in the center display. 2. Tap
Recirc.
> Air recirculation is activated/deactivated and the button lights up/goes out.
CAUTION
If the air in the vehicle is recirculated too long, there is a risk of fogging on the inside of thewindows.
NOTE
Recirculation cannot be activated when the max defroster is on.
Related information
• Climate system controls (p. 217)
• Activating and deactivating the recirculation timer setting (p. 224)
Activating and deactivating therecirculation timer setting
The climate system's recirculation function helps shut out smog, smoke, exhaust fumes, etc. byreusing the air in the passenger compartment.
When the recirculation timer is activated, air recir- culation will switch off automatically after 20minutes. 1. Tap
Settings in the Top view in the center
display.
2. Tap
Climate.
3. Tap
Recirculation Timer to activate/deacti-
vate the recirculation timer.
Related information
• Activating and deactivating recirculation (p. 224)

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CLIMATE CONTROL
228
Activating and deactivating the heated rear window and door mirrors from thecenter display
Rear window/door mirror heating button in Climate view.
1. Open Climate view in the center display. 2.Tap
Rear.
> Heated windows and door mirrors are activated and the button lights up/goes out.
Related information
• Climate system controls (p. 217)
• Automatically activating and deactivating theheated rear window and door mirrors(p. 228)
Automatically activating anddeactivating the heated rear windowand door mirrors
The heated rear window and door mirrors are used to quickly remove condensation and icefrom the glass.
It is possible to select whether rear window and door mirror heating should be automatically acti-vated or deactivated when the engine is started.With automatic start activated, heating will beactivated when there is a risk of ice or condensa-tion on the windows or mirrors. Heating is auto-matically switched off when the window or doormirror is sufficiently warm and the condensationor ice is gone. 1. Tap
Settings in the Top view in the center
display.
2. Tap
Climate.
3. Select
Auto Rear Defroster to activate/
deactivate automatic rear window and door heating.
Related information
• Activating and deactivating the heated rearwindow and door mirrors (p. 227)
Setting the blower speed for the
front seats4
The blower can be set to several different auto- matically controlled speeds for the front seat.
Blower control buttons in Climate view.
1. Open Climate view in the center display. 2. Tap the desired blower speed:
Off, 1-5 orMax.
> The blower speed will be changed and the buttons for the set speed will light up.
CAUTION
The air conditioning will not engage if the blower is turned off completely, which maycause fogging on the inside of the windows.
4The same setting applies to the rear seats with the 2-zone climate system.

DRIVER SUPPORT
}}}}
321
Deactivation of the Auto-hold brake function
In certain situations, Auto-hold will be deactivated when the vehicle is at a standstill and Pilot Assistwill go into standby mode. This means that thebrakes will be released and the vehicle couldbegin to roll. The driver must actively apply thebrakes to keep the vehicle stationary. This can occur if:
• the driver depresses the brake pedal
• the parking brake is applied
• the gear selector is moved to the
P, N or R
positions
• the driver puts Pilot Assist in standby mode.
Auto Activate Parking BrakeIn certain situations, the parking brake will be applied to keep the vehicle at a standstill. This occurs if Pilot Assist is keeping the vehicle stationary using the brakes and:
• the driver opens the door or unbuckleshis/her seat belt
• Pilot Assist has kept the vehicle at a stand-still for more than approx. 5 minutes
• the brakes overheat
• the driver switches off the engine manually.
Related information
•Pilot Assist (p. 309)
Pilot Assist limitations
Pilot Assist functionality may be reduced in cer- tain situations.
Pilot Assist is a driver support function designed to simplify driving and assist the driver in manysituations. However, the driver is always responsi-ble for maintaining a suitable distance to vehiclesor objects around it and ensuring that the vehicleis correctly positioned in the traffic lane.
WARNING
In some situations, Pilot Assist may have trou- ble helping the driver properly or may bedeactivated automatically – we advise againstusing Pilot Assist in such cases. Examples ofsuch situations include:
• the lane markings are worn, missing or cross each other.
• lane division is unclear, for example, whenthe lanes divide or merge or at exits orwhen there are 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 reduced visibilitywith poor light conditions, backlighting,wet road surface, etc.
The driver should also note that Pilot Assist has the following limitations: • High curbs, roadside barriers, temporary obstacles (traffic cones, safety barriers,etc.) are not detected. Alternatively, theymay be detected incorrectly as lane mark-ings, with a subsequent risk of contactbetween the vehicle and such obstacles.

DRIVER SUPPORT
330
Camera limitations
The camera used by several of the driver support functions has certain limitations, which alsoaffect the functions using the camera.
Reduced visibilityThe camera has the same limitations as the human eye. In other words, its “vision" is impairedby adverse weather conditions such as heavysnowfall/rain, dense fog, swirling dust/snow, etc.These conditions may reduce the function of sys-tems that depend on the camera or cause thesesystems to temporarily stop functioning. Strong sunlight, reflections from the road surface, ice or snow covering the road, a dirty road sur- face, or unclear lane marker lines may drastically reduce the camera

DRIVER SUPPORT
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331
CauseAction
The area of the windshield in front of the camera/radar sensor is dirty or covered by ice or snow. Clean the windshield in front of the camera/radar sensor and remove dirt, ice andsnow.
Thick fog, heavy rain or snow is blocking the radar signals or thecamera's range of visibility. No action. Heavy precipitation may sometimes prevent the camera/radar sensor fromfunctioning.
Water or snow is spraying/swirling up and blocking the radar signalsor the camera's range of visibility. No action. Very wet or snow-covered roads may sometimes prevent the camera/radar sensor from functioning.
There is dirt between the inside of the windshield and the camera/radar sensor. Consult a workshop to have the area of the windshield on the inside of the camera'scasing cleaned. An authorized Volvo workshop is recommended.
Bright sunlight No action. The camera/radar sensor will reset automatically when lighting conditionsimprove.
NOTE
Keep the windshield in front of the camera and radar unit clean.
High temperaturesIf the temperature in the passenger compartment is very high, the camera/radar sensor will switchoff temporarily for approx. 15 minutes after theengine is started to protect its electronic compo-nents. When the temperature has cooled suffi-ciently, the camera/radar sensor will automati-cally restart.
Damaged windshield
CAUTION
If there are cracks, scratches or stone chips on the windshield in front of any of the cam-era and radar unit "windows" and this coversan area of about 0.5 × 3.0 mm(0.02 × 0.12 in.) or more, contact a workshopto have the windshield replaced – an author-ized Volvo workshop is recommended. Failure to take action could result in reduced performance for the driver support systemsthat use the camera and radar unit.
It could cause functions to be reduced, deac- tivated completely or produce an incorrectfunction response. To avoid the risk of loss of function, malfunc- tion or reduced function of the driver supportsystems that use the radar unit, the followingalso apply:
• Volvo advises
against repairing cracks,
scratches or stone chips in the area infront of the camera and radar unit – theentire windshield should instead bereplaced.
• Before replacing the windshield, contactan authorized Volvo workshop to verify

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STARTING AND DRIVING
* Option/accessory.
452 When Trailer Stability Assist is activated, the
ESC symbol is
displayed in the instrument panel.
Related information
• Driving with a trailer (p. 449)
• Electronic Stability Control (p. 272)
Checking trailer lights
When connecting a trailer, make sure that all of the lights on the trailer are functioning beforestarting to drive.
Trailer turn signals and brake lightsIf one or more of the turn signals or brake lights on the trailer is not working, a symbol and mes-sage will be displayed in the instrument panel.The other lights on the trailer must be checkedmanually by the driver before the vehicle is driven.
SymbolMessage
•Trailer turn indicator Right
turn indicator malfunction
•Trailer turn indicator Left
turn indicator malfunction
•Trailer brake light Malfunc-
tion
If any of the trailer's turn signal lights is not work- ing, the turn signal symbol in the instrumentpanel will also flash more quickly than normal.
Trailer rear fog lightWhen a trailer is connected, the vehicle's rear foglight may not illuminate and rear fog light func-tionality is instead transferred to the trailer. If thisis the case, check to see if the trailer is equippedwith a rear fog light before activating the vehicle's fog lights when driving with a trailer to helpensure safe operation.
Checking trailer lights
*
Automatic check
When the trailer has been connected to the vehi- cle's electrical system, its lights can be checkedby automatically activating them. This functionhelps the driver check that the trailer's lights arefunctioning correctly before starting to drive. In order to perform this check, the engine must be turned off.
1. When a trailer is connected to the towbar,
the message
Automatic Trailer Lamp
Check will appear in the instrument panel.
2. Acknowledge the message by pressing the O button on the right-side steering wheel
keypad.
> The light check will begin.
3. Get out of the vehicle to perform the check. > All of the lights on the trailer will beginflashing, and then illuminate separately one at a time.
4. Visually check that all of the trailer's lights are functioning correctly.
5. After a short time, all of the trailer's lights will start flashing again.
> The light check is completed.