
STARTING AND DRIVING
462
Hill Descent Control
The function for assisting when driving downhill,Hill Descent Control (HDC), is a low-speedfunction with increased engine braking. Thefunction makes it possible to increase ordecrease the vehicle's speed on steep downhillgradients by only using the accelerator pedal,without applying the brakes.
The function is included in the Off Road drivemode.
HDC is designed for driving on rough roads atlow speeds and downhill gradients with slipperyor otherwise difficult road surfaces. The driverdoes not need to use the brake pedal but caninstead focus on steering.
WARNING
HDC is only intended to be a supplementarybraking aid and it does not function in all sit-uations.
The driver is always ultimately responsible foroperating the vehicle in a safe manner.
Function
Hill Descent Control allows the vehicle to moveforward or backward at very low speeds assistedby the brake system. The driver can increase thespeed by pressing the accelerator pedal. Whenthe accelerator pedal is released, the vehicle willreturn to very low speed regardless of how steep
the hill is and without the brakes needing to beapplied. The brake lights will illuminate when thefunction is activated.
The driver can brake to stop or slow the vehicleat any time by depressing the brake pedal.
HDC is activated along with Low Speed Control(LSC), which facilitates and improves traction andcontrol on rough and slippery surfaces. The sys-tem is intended to be used at low speeds, up toapproximately 40 km/h (25 mph).
To keep in mind when using HDC
If the function is switched off while driving ona steep downhill gradient, braking effect willbe gradually reduced.
HDC can be used in gear positions D and R,and in manual gears 1 or 2.
It is not possible to manually shift to thirdgear or higher when HDC is active.
NOTE
When LSC with HDC is activated in the OFFROAD drive mode, the feel of the acceleratorpedal and engine response will change.
NOTE
This drive mode is not designed to be usedfor normal street driving.
NOTE
The function is deactivated when driving athigh speeds and must be reactivated at lowerspeeds if so desired.
Related information
Activating and deactivating Hill Descent Con-trol using the function button (p. 463)
Changing drive mode (p. 455)
Low Speed Control (p. 460)
All Wheel Drive (AWD) (p. 448)

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STARTING AND DRIVING
* Option/accessory.464
Preconditioning
Whenever possible, precondition the vehiclebefore driving by connecting the chargingcable to an electrical outlet.
Avoid parking the vehicle somewhere wherethe interior will become too hot or too coldwhile the vehicle is parked. If possible, parkthe vehicle in a climate-controlled garage.
During a short drive after passenger com-partment preconditioning, turn off the pas-senger compartment fan or the air condition-ing in a hot climate.
If preconditioning is not possible when it iscold outside, use seat and steering wheelheating first. Avoid heating the entire pas-senger compartment to reduce the amountof current being taken from the hybrid bat-tery.
Driving
Choose the Pure drive mode to help mini-mize electric power consumption.
Maintain a steady speed and a generous fol-lowing distance to traffic ahead to minimizebraking. This drive mode has the lowestpower consumption.
Balance energy requirements using theaccelerator pedal. Use the indicator on theinstrument panel to see available electricpower and avoid starting the combustionengine unnecessarily. The electric motor is
more effective than the combustion engine,especially at low speeds.
When braking is necessary, brake gentlyusing the brake pedal. This will help rechargethe hybrid battery. A regenerative function isintegrated in the brake pedal and can beaugmented by the electric motor's brakingcapacity when the gear selector is in modeB.
Higher speeds increase energy consumption- air resistance increases with speed.
Activate the Hold function in the Functionview at high speeds when traveling fartherthan is possible using the hybrid battery'scapacity.
Whenever possible, avoid using the Chargefunction to charge the hybrid battery. Charg-ing the battery using the combustion engineincreases fuel consumption and carbon diox-ide emissions.
In a cold climate, reduce heating of the wind-shield/rear window, mirrors, seats and thesteering wheel.
Maintain the correct pressure in the tires andcheck pressure regularly.
The type of tires used could affect energyconsumption - consult a retailer for advice onsuitable tires.
Remove unnecessary items from the vehicle- the heavier the load, the higher the fuelconsumption.
Roof loads increase air resistance andincrease fuel consumption. Remove roofboxes, ski racks, etc. that are not in use.
Avoid driving with the windows open.
Do not keep the vehicle still on an upwardgradient by using the accelerator pedal. Usethe brakes instead.
Related information
Drive-E ‒ purer driving pleasure (p. 27)
Energy distribution in hybrid mode using mapdata* (p. 456)
Factors affecting electric motor range(p. 465)
Using the electric motor only (p. 465)
Hybrid gauge (p. 87)
Checking tire pressure (p. 563)

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STARTING AND DRIVING
* Option/accessory.478
12. Remove the jumper cables in the reverseorder ‒ first the black cables and then thered cables.
Make sure that none of the clamps of theblack jumper cables come into contact witheither vehicle's positive (+) jump start termi-nals or either of the red jumper cable's con-nected clamps.
WARNING
PROPOSITION 65 WARNING! Battery posts,terminals, and related accessories containlead and lead compounds, chemicals knownto the state of California to cause cancer andreproductive harm. Wash hands after han-dling.
WARNING
Batteries generate hydrogen gas, whichis flammable and explosive.
Do not connect the jumper cable to anypart of the fuel system or to any movingparts. Avoid touching hot manifolds.
Battery fluid contains sulfuric acid. Do notallow battery fluid to contact eyes, skin,fabrics or painted surfaces.
If contact occurs, flush the affected areaimmediately with water. Obtain medicalhelp immediately if eyes are affected.
Never expose the battery to open flameor electric spark. Do not smoke near thebattery. Failure to follow the instructionsfor jump starting can lead to injury.
NOTE
The vehicle cannot be started if the hybridbattery is discharged.
Related information
Starting the vehicle (p. 430)
Ignition modes (p. 433)
Adjusting the steering wheel (p. 198)
Selecting ignition mode (p. 434)
Detachable towbar*
Volvo recommends the use of Volvo towbarsthat are specially designed for the vehicle.
NOTE
The optional detachable trailer hitch may notbe available in all markets or on all models.Consult your Volvo retailer.
Ball holder
Cotter pin
Towbar assembly
Locking bolt
Safety wire attachment bracket

STARTING AND DRIVING
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* Option/accessory.481
The automatic transmission selects the optimalgear for the current load and engine speed.
Steep inclines
Do not lock the automatic transmission into ahigher gear than what the engine can handle ‒ itis not always preferable to drive in high gears atlow rpm.
Parking on a hill
1. Depress the brake pedal.
2. Apply the parking brake.
3.Put the gear selector in P.
4. Release the brake pedal.
Put chocks behind the wheels when the vehicleis parked on a hill with a trailer attached.
Starting on a hill
1. Depress the brake pedal.
2.Put the gear selector in D.
3. Release the parking brake.
4. Release the brake pedal and start driving.
Related information
Trailer Stability Assist* (p. 481)
Checking trailer lights (p. 482)
Towing capacity and tongue weight (p. 668)
Overheating of engine and transmission(p. 475)
Trailer Stability Assist*
Trailer Stability Assist (TSA8) is a functiondesigned to help stabilize a vehicle that is tow-ing a trailer when the vehicle and trailer havebegun to sway. The function is part of the Elec-
tronic Stability Control system ESC9.
Reasons for swaying
A vehicle towing a trailer may begin to sway forvarious reasons. Normally this only occurs at highspeeds. However, if the trailer is overloaded orunevenly distributed, e.g. too far back, there is arisk of swaying even at low speeds.
Swaying may be caused by factors such as:
The vehicle and trailer are hit by a sudden,strong crosswind.
The vehicle and trailer are traveling on anuneven road or over a bump.
Sudden movements of the steering wheel.
Once swaying has begun, it can be difficult orimpossible to stop it. This makes the vehicle andtrailer difficult to control and there is a risk ofswerving into oncoming traffic or driving off theroad.
Trailer Stability Assist function
Trailer Stability Assist continuously monitors thevehicle's movements, particularly lateral move-
ments. If swaying is detected, the brakes areapplied individually on the front wheels, which hasa stabilizing effect on the vehicle and trailer. Thisis often enough to enable the driver to regaincontrol of the vehicle.
If the Trailer Stability Assist function's firstattempt is not adequate to stop the swayingmotion, the brakes are applied on all wheels andengine power is temporarily reduced. As theswaying motion begins to decrease and the vehi-cle and trailer have once again become stable,TSA stops regulating the brakes/engine powerand the driver regains control of the vehicle.
NOTE
Trailer Stability Assist is deactivated if thedriver selects the sport mode by deactivatingESC in the center display's menu system.
Trailer Stability Assist may not intervene if thedriver tries to compensate for the swaying motionby moving the steering wheel rapidly, becausethe system will then not be able to determine if itis the trailer or the driver causing the swaying.
8Trailer Stability Assist9Electronic Stability Control

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STARTING AND DRIVING
* Option/accessory.482
When Trailer Stability Assist isactivated, the ESC symbol isdisplayed in the instrumentpanel.
Related information
Driving with a trailer (p. 479)
Electronic Stability Control (p. 273)
Checking trailer lights
When connecting a trailer, make sure that all ofthe lights on the trailer are functioning beforestarting to drive.
Trailer turn signals and brake lights
If one or more of the turn signals or brake lightson 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 Rightturn indicator malfunction
Trailer turn indicator Leftturn 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 light
When 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 mustbe turned off.
1. When a trailer is connected to the towbar,the message Automatic Trailer LampCheck will appear in the instrument panel.
2.Acknowledge the message by pressing theO button on the right-side steering wheelkeypad.
> 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 separatelyone at a time.
4. Visually check that all of the trailer's lightsare functioning correctly.
5. After a short time, all of the trailer's lights willstart flashing again.
> The light check is completed.

AUDIO, MEDIA AND INTERNET
* Option/accessory.492
Audio, media and Internet
The audio and media system consists of a mediaplayer and a radio. A cellular phone can also beconnected through Bluetooth to use hands-freefunctions or play music in the vehicle. When thevehicle is connected to the Internet, it is alsopossible to use apps to play media.
Audio and media overview
The functions can be controlled using voice com-mands, the steering wheel keypad or the centerdisplay. The number of speakers and amplifiersvaries depending on the audio system installed inthe vehicle.
System updates
The audio and media system is continuouslyimproved. When the vehicle has an Internet con-nection, system updates can be downloaded foroptimal functionality; see support.volvocars.com.
Related information
Media player (p. 514)
Radio (p. 497)
Phone (p. 528)
Internet-connected vehicle* (p. 537)
Apps (p. 494)
Voice control (p. 145)
Ignition modes (p. 433)
Driver distraction (p. 39)
Handling system updates via Download Cen-ter (p. 611)
License agreement for audio and media(p. 545)
Sound settings
The sound system is precalibrated for optimalsound reproduction, but these settings can bepersonalized.
The system's volume is normally adjusted usingthe volume control below the center display orthe right-side steering wheel keypad. Thisapplies, for example, when playing music or theradio or during phone calls and active traffic mes-sages.
Optimal sound reproduction
The audio system is precalibrated for optimalsound reproduction using digital signal process-ing. This calibration takes into account speakers,amplifiers, passenger compartment acoustics, lis-tener position, etc. for each combination of vehi-cle model and audio system. There is also adynamic calibration that takes into account thevolume control setting and the vehicle's speed.
Personal settings
Different settings are available in Top view under
SettingsSound depending on the vehicle'ssound system.

AUDIO, MEDIA AND INTERNET
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* Option/accessory.497
Radio
The radio can receive broadcasting from the FMwaveband with HD Radio™ Technology and
SiriusXM® Satellite radio *. When the vehicle hasan Internet connection, it is also possible to lis-ten to web radio.
The radio can be controlledusing voice commands, theright-side steering wheel key-pad or the center display.
Related information
Starting the radio (p. 497)
Changing waveband and radio station(p. 498)
Storing radio favorites (p. 499)
Radio settings (p. 500)
RBDS (p. 501)
HD Radio™ (p. 501)
SiriusXM® Satellite radio* (p. 504)
Internet-connected vehicle* (p. 537)
Voice control for radio and media (p. 148)
Media player (p. 514)
Starting the radio
The radio is started from the center display'sApp view.
1.Open the desired waveband (e.g. FM) fromApp view.
2. Select a radio station.
Related information
Radio (p. 497)
Searching for a radio station (p. 499)

AUDIO, MEDIA AND INTERNET
498
Changing waveband and radio station(p. 498)
Storing radio favorites (p. 499)
Radio settings (p. 500)
Voice control for radio and media (p. 148)
Changing waveband and radiostation
Instructions for changing wavebands, wavebandlists and radio stations in the selected list areprovided here.
Changing wavebands
Swipe from App view on the center display andselect the desired waveband (e.g. FM) or openthe App menu in the instrument panel with theright-side steering wheel keypad and make yourselection there.
Changing a list in a waveband
1.Tap Library.
2.Select playback from Stations, Favorites orGenres.
3.Tap the desired station in the list.
Favorites – only plays selected favorite channels.
Genres - only plays channels broadcasting theselected genre or program type, e.g. pop, classi-cal, etc.
Changing radio stations in a selected
list
–Press or under the center displayor on the right-side steering wheel keypad.
>Move step-by-step through the selectedlist.
It is also possible to change radio station in theselected list via the center display.
Related information
Radio (p. 497)
Searching for a radio station (p. 499)
Voice control for radio and media (p. 148)
Storing radio favorites (p. 499)
Radio settings (p. 500)
App menu in instrument panel (p. 103)