2018 VOLVO XC90 ESP

STARTING AND DRIVING
* Option/accessory.437
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. In vehicles equipped with drive mode control *,
the function is included in the Off Road drive mode.
HDC is designed for driving on rough roads at low 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 supplementary braking aid and it does not function in all sit-uations. The driver is always ultimately responsible for operating the vehicle in a safe manner.
FunctionHill Descent Control allows the vehicle to move forward 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 will return to very low speed regardless of how steepthe 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 vehicle at 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, the feel of the accelerator pedal and engine responsewill change.
NOTE
This drive mode is not designed to be used for normal street driving.
NOTE
The function is deactivated when driving at high speeds and must be reactivated at lowerspeeds if so desired.
Related information
• Activating and deactivating Hill Descent Con- trol
* using the function button (p. 438)
• Changing drive mode
* (p. 425)
• Low Speed Control
* (p. 435)
• All Wheel Drive (AWD)
* (p. 423)

STARTING AND DRIVING
* Option/accessory.
446
Overheating of engine andtransmission
In demanding driving conditions, such as driving in mountainous areas or hot weather, there is arisk of the engine or transmission overheating,especially when carrying heavy loads.
• Engine power may be temporarily limited.
• Remove any auxiliary lights mounted in front of the grille when driving in hot weather.
• If the temperature in the engine's coolingsystem becomes too high, a warning symbolwill appear in the instrument panel along with the message
Engine temperature High
temperature Stop safely. Pull over to a
safe location and let the engine idle for a few minutes to cool down.
• If the message
Engine temperature High
temperature Turn off engine or Engine
coolant Level low, turn off engine is dis-
played, stop the vehicle and turn off the engine.
• If the transmission begins to overheat, analternative gear shifting program will beselected. An integrated protective functionwill also be activated, the warning symbol will illuminate and the message
Transmission
warm Reduce speed to lower
temperature or Transmission hot Stop
safely, wait for cooling will be displayed in
the instrument panel. Follow the recommen- dations given by reducing speed or stopping the vehicle safely and letting the engine idle for a few minutes to let the transmissioncool.
• If the vehicle begins to overheat, the air con-ditioning may be temporarily switched off.
• After a prolonged period of driving indemanding conditions, do not turn off theengine immediately after stopping.
NOTE
It is normal for the engine's cooling fan to operate for a short time after the engine isswitched off.
Symbols in the instrument panel
SymbolMeaning
High engine temperature. Follow the recommendations provided.
Low coolant level. Follow the rec- ommendations provided.
Transmission hot/overheated/cool- ing. Follow the recommendationsprovided.
Related information
• Refilling coolant (p. 590)
• Driving with a trailer (p. 449)
• Preparing for a long trip (p. 439)
• Gear indicator
* (p. 422)

STARTING AND DRIVING
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447
Battery drain The electrical functions in the vehicle drain the battery to varying degrees. Avoid using ignitionmode II when the engine is switched off. Use
ignition mode I instead, as this uses less electri-
cal current.
Note that certain accessories may also drain power from the electrical system. Do not usefunctions that use a lot of electrical current whenthe engine is turned off. Examples of such func-tions are:
• blower
• headlights
• windshield wipers
• audio system (especially at high volume).
If the starter battery voltage is low, a message isshown in the driver display. The vehicle's energy-saving function will then turn off or reduce certainfunctions, such as the blower and/or the audio system.
–Charge the battery by starting the engine and let it run for at least 15 minutes (drivingcharges the battery faster than letting theengine idle).
Related information
• Start battery (p. 598)
• Ignition modes (p. 407)
Jump starting using another battery
If the start battery is discharged, current from another battery can be used to start the vehicle.
Jumper cable connecting points.
To avoid short circuits or other damage, the fol- lowing steps are recommended when jump star-ting the battery using another battery: 1. Put the ignition in mode 0.
2. Make sure the auxiliary battery (the battery used to jump start the discharged battery) has a voltage of 12 volts.
3. If the auxiliary battery is in another vehicle, turn off that vehicle's engine and make surethat the vehicles are not touching each other. 4. Clamp the red jumper cable onto the auxiliary
battery's positive (+) terminal (1).
CAUTION
Connect the jump cable carefully to prevent short circuits with other components in theengine compartment.
5. Fold back the cover over your vehicle's posi-tive (+) jump start terminal (2).
6. Clamp the other end of the red jumper cable to your vehicle's positive (+) jump start termi- nal (2).
7. Clamp the black jumper cable onto the auxili- ary battery's negative (-) terminal (3).
8. Clamp the other end of the black jumper cable to your vehicle's negative (-) groundpoint (4).
9. Make sure the jumper cables are securely attached to help prevent sparks while jumpstarting.
10. Start the engine of the assisting vehicle and let it run for a few minutes at a higher idlingspeed than normal, about 1500 rpm.

STARTING AND DRIVING
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449
Installing the ball holder1. If necessary, remove the cotter pin from thelocking bolt and slide the locking bolt out of the towbar assembly.
2. Slide the ball holder into the towbar assem- bly.
3. Align the hole in the ball holder with the one in the towbar assembly.
4. Slide the locking bolt through the towbar assembly/ball holder.
5. Insert the cotter pin in the hole at the end of the locking bolt.
WARNING
• Be sure the towbar is securely locked in position before attaching anything to it.
• Always attach the trailer's safety wiresecurely to the towbar's safety wireattachment bracket.
Removing the ball holder1. Remove the cotter pin from the locking bolt
and slide the locking bolt out of the ballholder/towbar assembly.
2. Pull the ball holder out of the towbar assem- bly.
Stowing the ball holder
WARNING
When not in use, the detachable ball holder should always be properly stowed in the des-ignated location under the floor of the cargocompartment.
Related information
• Driving with a trailer (p. 449)
• Towing capacity and tongue weight (p. 642)
Driving with a trailer
There are a number of things to consider when towing a trailer, such as the towbar, the trailerand how the load is distributed in the trailer.
Load-carrying capacity is determined by the vehi- cle's curb weight. The total weight of all passen-gers and any installed accessories, e.g. towbar,reduces the vehicle's load-carrying capacity bythe corresponding amount. • Towbars used on the vehicle must be approved for the applicable use.
• Distribute the load on the trailer so that theweight on the towbar complies with thespecified maximum towball weight. Thetongue weight is calculated as part of thevehicle's payload.
• Increase the tire pressure to the recom-mended pressure for a full load.
• The engine is subjected to more load thanusual when towing a trailer.
• Towing a trailer affects the vehicle's han-dling, durability and driving economy.
• Do not drive with a heavy trailer when thevehicle is very new. Wait until the mileagehas reached at least 1000 km (620 miles).
• On long and steep downgrades, the vehicle'sbrakes are subjected to much more loadthan usual. When manually shifting, down-shift and adapt speed accordingly.

STARTING AND DRIVING
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* Option/accessory.457
Programming HomeLink®
*12
Follow these instructions to program HomeLink ®
, reset all programming, or program
individual buttons.
NOTE
In some vehicles, the ignition must be on or in the "accessory position" before HomeLink ®
can be programmed or used. It can be a good idea to put new batteries in the remote con- trol being replaced by HomeLink ®
for faster
programming and better radio signal trans-mission. The HomeLink ®
buttons should be
reset before programming.
WARNING
While HomeLink ®
is being programmed, the
garage door or gate being programmed may be activated. Make sure that no one is nearthe door or gate during programming. Whenprogramming a garage door opener, it isadvised to park outside of the garage. 1.
Point the remote control at the HomeLink ®
button to be programmed and hold it about 2-8 cm (1-3 inches) from the button. Do not obstruct the HomeLink ®
indicator light.
Note: Some remote controls are more effec-
tive at programming HomeLink ®
from a dis-
tance of about 15-20 cm (6-12 inches). Try moving the remote control closer or furtheraway if you are experiencing any difficultiesprogramming.
2. Press and hold both the remote control but- ton and the HomeLink ®
button to be pro-
grammed.
3. Do not release the buttons until the indicator light has stopped flashing slowly (about oncea second) and either flashes quickly (about10 times a second) or glows steadily. >Steady glow: Indication that program-
ming is complete. Press the programmed button twice to activate. Flashing quickly: The device being pro-
grammed with HomeLink ®
may have a
security function that requires an extra step. Try pressing the programmed buttontwice to see whether the programmingworks. Otherwise, continue with the fol-lowing steps.
4. Locate the "training" button 13
on the
receiver for the e.g. garage door opener. It is usually located near the antenna bracket onthe receiver.
5. Press and release the "training" button once. Programming must be completed within 30seconds after pressing the button.
6. Press and release the HomeLink ®
button to
be programmed. Repeat the press/hold/release sequence a second time. For somereceivers, the sequence may need to berepeated a third time.
> Programming is now completed and the garage door, gate, etc. should now be activated when the programmed button ispressed.
If you experience any difficulties programming, please contact HomeLink ®
at:
12 Certain markets only.
13 The name and color of the button varies depending on the manufacturer.

STARTING AND DRIVING
* Option/accessory.459
Type approval for HomeLink®
*14
FCC (USA) and IC (Canada)This device complies with FCC rules part 15 and Industry Canada RSS-210. Operation is subjectto the following two conditions: (1) This devicemay not cause harmful interference, and (2) Thisdevice must accept any interference that may bereceived including interference that may causeundesired operation.
WARNING
The transmitter has been tested and complies with FCC and IC rules. Changes or modifica-tions not expressly approved by the partyresponsible for compliance could void the user's authority to operate the device. 15
Type approval for EUGentex Corporation hereby declares that HomeLink®
Model UAHL5 complies with the
Radio equipment directive 2014/53/EU. Wavelengths within which the radio equipment operates:
• 433.05MHz-434.79MHz <10mW E.R.P.
• 868.00MHz-868.60MHz <25mW E.R.P.
• 868.70MHz-868.20MHz <25mW E.R.P.
• 869.40MHz-869.65MHz <25mW E.R.P. •
869.70MHz-870.00MHz <25mW E.R.P.
Certificate holder address: Gentex Corporation,600 North Centennial Street, Zeeland MI 49464,USA For more information, see support.volvocars.com.
Related information
• HomeLink ®
* (p. 456)
Compass
An integrated compass in the upper right corner of the rearview mirror shows the direction thevehicle is traveling.
Rearview mirror with compass.
Eight different compass directions are shown with the abbreviations: N (north), NE (northeast),E (east), SE (southeast), S (south), SW (south-
west), W (west) and NW (northwest).
Related information
• Activating and deactivating the compass (p. 460)
• Calibrating the compass (p. 460)
14
Certain markets only.
15 The term "IC:" before the certification/registration number only signifies that Industry Canada technical specifications were met.

AUDIO, MEDIA AND INTERNET
}}
* Option/accessory.493
Apple® CarPlay®
*
With CarPlay, you can listen to music, make phone calls, get driving instructions, send/receive messages and use Siri, all while remain-ing focused on driving.
CarPlay works with select Apple devices. If the car doesnot already support CarPlay,this can be retrofitted. Contacta Volvo retailer to installCarPlay.
Information about supported apps and compati- ble phones is available on the Apple website:www.apple.com/ios/carplay/. Using apps that arenot compatible with CarPlay could cause the con-nection between iPhone and the vehicle to belost. Please note that Volvo is not responsible forthe content of CarPlay. When using map navigation via CarPlay, guidance will only be shown on the center display and notin the instrument panel or head-up display. CarPlay apps can be controlled from the center display, a phone or with the right-side steeringwheel keypad (for certain functions). The appscan also be voice-controlled using Siri. Press and hold the
button on the steering wheel to
start voice control with Siri. Press briefly to acti- vate the vehicle's own voice control system. If Siri cuts off too soon, press and hold the
6
but-
ton on the steering wheel.
By using Apple CarPlay you acknowledge the following: Apple CarPlay is a serviceprovided by Apple Inc. under its terms andconditions. Volvo Cars is thus notresponsible for Apple CarPlay or itsfeatures/applications. When using AppleCarPlay, certain information from your car(including its position) is transferred to youriPhone. In relation to Volvo Cars, you arefully responsible for your and any othersperson

AUDIO, MEDIA AND INTERNET
* Option/accessory.
496
Android Auto *
Android Auto lets you listen to music, make calls, get driving directions and use apps customizedfor your vehicle from an Android device.Android Auto can be used with selected Androiddevices.
For information on supported apps and compati- ble devices, please go to www.android.com/auto/. For third-party apps, see Google Play.Please note that Volvo is not responsible for thecontent of Android Auto. Android Auto is started from App view. After Android Auto has been initially started, the appwill start automatically the next time the device isconnected. The automatic start setting can bedeactivated in Settings.
NOTE
When a phone is connected to Android Auto, it is possible to steam to another media playervia Bluetooth. Bluetooth is active whileAndroid Auto is in use.
When using navigation guidance provided by Android Auto, navigation will only be shown onthe center display and not in the instrumentpanel or head-up display. Android Auto can be controlled from the center display, with the right-side steering wheel keypador by using voice commands. Press and hold the
button to activate voice control and tap the
same button to deactivate.
By using Android Auto, you acknowledge the following: Android Auto is a serviceprovided by Google Inc. under its terms andconditions. Volvo Cars is not responsible forAndroid Auto or its features or applications.When you use Android Auto, your cartransfers certain information (including itslocation) to your connected Android phone.You are fully responsible for your and anyother person