2015 VOLVO XC90 warning

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.325
Activating/deactivating Lane Departure Warning (LDW)
LDW can be activated/deactivated.
Activating/deactivating
The function can be activated/deactivated in the center display's Function view.
–Tap the Lane Departure Warning button.
> LDW is activated (GREEN indicator light in the button), or is deactivated (GRAY indicator light in the button).
Type of warningChoose the type of warning that the driver willreceive if the vehicle starts to leave its drivinglane. 1. Tap
Settings in the center display's Top
view.
2. Tap
My CarIntelliSafeLane
Departure Warning. 3.
Under
Lane Departure Warning feedback,
select: •
Sound: an audible warning signal will be
provided
•
Vibrations: the driver will be warned by
vibrations in the steering wheel
Related information
• Driving lane assistance (p. 323)
Activating/deactivating Lane Keeping Aid (LKA)
*
LKA can be activated/deactivated.
Activating/deactivating
The function can be activated/deactivated in the center display's Function view.
–Tap Lane Keeping Aid.
> LKA is activated (GREEN indicator light in the button), or is deactivated (GRAY indi- cator light in the button).
Type of warningChoose the type of warning that the driver willreceive if the vehicle starts to leave its drivinglane. 1. Tap
Settings in the center display's Top
view.
2. Tap
My CarIntelliSafeLane Keeping
Aid.

DRIVER SUPPORT
3263.
Under
Lane Keeping Aid Warning
Feedback, select:
•
Sound: an audible warning signal will be
provided
•
Vibrations: the driver will be warned by
vibrations in the steering wheel
Type of assistanceSelect the type of assistance LKA should provide: 1. Tap
Settings in the center display's Top
view.
2. Tap
My CarIntelliSafeLane Keeping
Aid.
3. Under
Lane Keeping Aid Assistance
Mode, select:
•
Assist: the system will provide steering
assistance but no warning.
•
Both: the system will provide steering
assistance and warning
•
Warning: the system will provide warning
but no steering assistance
Related information
• Driving lane assistance (p. 323)

DRIVER SUPPORT
327
Driving lane assistance symbols and messages
A number of symbols and messages relating to Lane Keeping Aid (LKA) and Lane DepartureWarning (LDW) may appear in the instrumentpanel.
Symbols in the instrument panelThe driving lane assistance systems use a symbol in theinstrument panel in differentsituations.
Several examples of the symbol's appearance will be given here:
Available
When the driving lane assistance systems are available,
the marker lines in the symbol will be white
LDW/LKA are monitoring the driving lane's marker line(s).
Not available
When the driving lane assistance systems are not avail-
able, the marker lines in the symbol will be gray
This is because LDW/LKA cannot monitor (detect) the driving lane's marker line(s) or thevehicle's speed is too low or the road is too nar-row.
Steering/warning indicator
Steering/warning: the side marker lines in the symbol will be colored
LDW/LKA alerts the driver that the vehicle is leaving its lane. LKA attempts to steer the vehicleback into the lane. LKA also indicates if the sys-tem is attempting to steer the vehicle back intoits lane.

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.
328
Symbols and messages
SymbolMessageExplanation
Driver support system Reduced functionality Service requiredThe system is not functioning properly. Contact a trained and qualified Volvo service techni- cian.
Windscreen sensor Sensor blocked, see Owner's manualThe camera's functionality is limited.
Lane Keeping Aid Apply steeringLKA's steering assistance does not function if the driver's hands are not on the steering wheel. Steer the vehicle actively.
Related information
• Driving lane assistance (p. 323)
• Activating/deactivating Lane Departure Warning (LDW) (p. 325)
• Activating/deactivating Lane Keeping Aid (LKA)
* (p. 325)

STARTING AND DRIVING
* Option/accessory, for more information, see Introduction.331
Driving on wet or salted roadsProlonged driving on wet or salted roads can affect brake function and increase stopping dis-tance. Be sure to keep a safe distance to thevehicle ahead when driving under these condi-tions.
Brake pad inspection
On vehicles equipped with a jack*, the condition
of the brake pads can be checked by raising thevehicle and performing a visual inspection of thebrake pads.
WARNING
• If the vehicle has been driven immediately prior to a brake pad inspection, the wheelhub, brake components, etc., will be veryhot. Allow time for these components tocool before carrying out the inspection.
• Apply the parking brake and put the gear selector in the Park (
P) position.
• Block the wheels standing on the ground, use rigid wooden blocks or large stones.
WARNING
•
Use the jack intended for the vehicle when changing a tire. For any other job,use stands to support the vehicle.
• The jack should be kept well-greased andclean, and should not be damaged.
• Be sure the jack is on a firm, level, non-slippery surface.
• No objects should be placed between thebase of jack and the ground, or betweenthe jack and the attachment bar on thevehicle.
• The jack must correctly engage the jackattachment.
• Never allow any part of your body to beextended under a vehicle supported by ajack.
Instrument panel symbols
SymbolExplanation
Red symbol: Check the brake fluid level. If the level is low, top up andhave the system inspected todetermine the cause of the loss offluid.
Yellow symbol: Time for brake sys- tem service.
Steady glow for 2 seconds when the engine is started: automaticfunction control. Steady glow for more than 2 seconds: there is a fault inthe ABS system. The normal brakesystem will still function but withoutABS brake modulation.
WARNING
If the fluid level is below the
MIN mark in the
reservoir or if a brake system message is shown in the information display: DO NOT
DRIVE . Have the vehicle towed to a trained
and qualified Volvo service technician and have the brake system inspected.

STARTING AND DRIVING
* Option/accessory, for more information, see Introduction.
332
WARNING
If both symbols illuminate at the same time and the brake level is below the MIN mark in
the reservoir or if a brake system- related message is shown in the information display: DO NOT DRIVE . Have the vehicle towed to a
trained and qualified Volvo service technician and have the brake system inspected.
Related information
• Brake functions (p. 332)
• Brake assist system (p. 333)
• Emergency brake lights (p. 334)
Brake functions
The vehicle's standard braking features are aug- mented by a number of auxiliary help functions.
In addition to the wheel brakes and the parking brake, the vehicle is equipped with several auto-matic brake assist functions. These systems helpthe driver by e.g., keeping the vehicle stationarywhen the brake pedal is not depressed (at a traf-fic light or intersection), when starting up a hill orwhen driving down a hill. These systems include: • Auto-hold brakes
• Hill Start Assist
• Braking assist after a collision
• Hill Descent Control
*
Related information
•Brakes (p. 330)
• Parking brake (p. 335)
• Hill Descent Control (HDC) (p. 334)
• Auto-hold brake function (p. 332)
Auto-hold brake function
With the Auto-hold brake function, the driver can release the brake pedal and the brakes willremain applied, for example, when the vehiclehas stopped at a traffic light or intersection.
When the vehicle is no longer moving forward, Auto-hold applies the brakes automatically, eitherusing the normal brakes or the parking brake.The brakes will be released when the acceleratorpedal is depressed. If the driver's door is opened or the engine is turned off, the parking brake will be applied auto-matically.
Auto-hold control
Auto-hold control and indicator light
Turn Auto-hold on or off by pressing the control in the tunnel console. The indicator light illumi-nates when the function is on.

STARTING AND DRIVING
333
When Auto-hold is off, Hill Start Assist (HSA) will be activated to help prevent the vehicle from roll-ing backwards when starting up a hill.
Instrument panel symbol
SymbolExplanation
The symbol in the instrument panel illuminates when this func-tion is using the normal brakes tokeep the vehicle stationary.
A
B
This symbol in the instrument panel illuminates when Auto-holdis using the parking brake to keepthe vehicle stationary
A
US models
B Canadian models
Related information
• Hill Start Assist (p. 335)
• Brake functions (p. 332)
Brake assist system
The Brake Assist System (BAS) increases brak- ing force, thereby helping reduce braking dis-tance. The system monitors the driver's braking habits and increases braking force when necessary.Brake force can be increased up to the point atwhich the ABS system is activated. The functionis deactivated when pressure on the brake pedaldecreases.
NOTE
•When BAS is activated, the brake pedal will go down farther than usual. Depressthe pedal as long as necessary.
• Braking will stop when the pedal isreleased.
Related information
•Brakes (p. 330)
Braking effect after a collision
In the event of a collision in which the airbags or seat belt pretensioners deploy or if a collisionwith an animal is detected, the vehicle's brakesare applied to help prevent or mitigate a secon-dary collision.
Maintaining control of the vehicle after a collision may be difficult. To help avoid or mitigate theeffect of a secondary collision, the brakes areapplied automatically to help bring the vehicle toa stop. The brake lights and hazard warning flashers will be activated and the flashers will remain on afterthe vehicle has come to a standstill. The parkingbrake will then be applied automatically. In a situation where stopping the vehicle may not be desirable, the driver can override this systemby pressing the accelerator pedal. This feature can only function if the brake system is intact after the collision.
Related information
• Brake functions (p. 332)
• Airbag system (p. 83)
• Rear Collision Warning (RCW) (p. 277)

STARTING AND DRIVING
* Option/accessory, for more information, see Introduction.
334
Emergency brake lights
The emergency brake lights activate in the event of hard braking/rapid deceleration at most nor-mal driving speeds or if the ABS system is acti-vated. This function causes an additional taillighton each side of the vehicle to illuminate to helpalert vehicles traveling behind.
Once the emergency brake lights have been acti- vated, if the driver releases the brake pedal, thebrake lights will return to their normal function.
Related information
• Brakes (p. 330)
• Hazard warning flashers (p. 144)
• Brake lights (p. 143)
Hill Descent Control (HDC) HDC is a type of low-speed automatic engine brake and makes it possible to increase ordecrease the vehicle's speed on steep downhillgradients using only the accelerator pedal, with-out applying the brakes. HDC is integrated into the
Off Road drive mode.
HDC is particularly useful when driving down steep hills with rough surfaces, and where theroad may have slippery patches.
WARNING
HDC does not function in all situations, and is a supplementary braking aid. The driver hasfull responsibility for driving in a safe manner.
FunctionHDC allows the vehicle to roll forward or in reverse at very low speed with enhanced enginebraking. However, speed can be adjusted withthe accelerator pedal. When the acceleratorpedal is released, the vehicle will return to verylow speed. The driver can use the brakes to slow or stop the vehicle at any time. HDC is activated along with Low Speed Control (LSC), which together make driving on slipperysurfaces at low speeds easier. When HDC and LSC are activated, this changes the response from the accelerator pedal andengine.
Activating HDCHDC only functions at low speeds.
Using the driving mode control
*
Select the Off Road driving mode to activate
HDC. Select a different drive mode to turn HDC off. If this is done while the vehicle is on a steep down-grade, engine braking will decrease gradually.
NOTE
When LSC with HDC is activated by the Off
Road drive mode, the feel of the accelerator
pedal and engine response will change. The function is deactivated when driving at higher speeds and must be reactivated atlower speeds if so desired.