2018 VOLVO V90 engine

STARTING AND DRIVING
* Option/accessory.443
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.
Disabling the automatic check
The automatic light check can be disabled in the center display. 1.Tap
Settings in the Top view.
2. Tap
My CarLights and Lighting.
3. Deselect
Automatic Trailer Lamp Check.
Manual check
If the automatic check has been disabled, the check can be started manually. 1.Tap
Settings in the Top view.
2. Tap
My CarLights and Lighting.
3. Select
Manual Trailer Lamp Check.
> The light check will begin. Get out of the vehicle to perform the check.
Related information
• Driving with a trailer (p. 440)

STARTING AND DRIVING
444
Towing using a towlineThis section refers to one vehicle being towed behind another using a towline.
Before towing another vehicle, check applicable speed limit regulations.
Preparations and towing
CAUTION
Note that the vehicle must always be towed with the wheels rolling forward.
• Do not tow a vehicle with automatictransmission at a speed greater than80 km/h (50 mph) or for a distancegreater than 80 km (50 miles).
WARNING
•
Ignition mode
II must be active – all air-
bags are deactivated in ignition mode I.
• Always have the remote key in the vehicle when it is towed.
WARNING
The brake and steering servos do not work when the engine is off – it takesabout 5 times more pressure on the brakepedal and steering requires much more effortthan normal. 1. Turn on the hazard warning flashers.
2. Attach the towline to the towing eyelet.3.
Put the vehicle in ignition mode II – without
pressing the brake pedal, turn the start knob clockwise and hold it there for about4 seconds. Release the knob, which willautomatically return to its original position.
4. Move the gear selector to neutral ( N) and
release the parking brake. If the battery charge level is too low, it may not be possible to release the parking brake.Connect an auxiliary battery to the vehicle ifthe battery is discharged.
> The towing vehicle can now start driving.
5. Keep the towline taut when the towing vehi- cle slows down by applying light pressure to the brake pedal. This will help avoid jarringmovements.
6. Be prepared to apply the brakes to stop the vehicle.
Jump startingDo not tow the vehicle to start the engine. Use anauxiliary battery if the start battery's charge levelis so low that the engine cannot be started.
CAUTION
Attempting to tow with the engine running could result in damage to the three-way cata-lytic converter.
Related information
• Attaching and removing the towing eyelet (p. 445)
• Hazard warning flashers (p. 164)
• Recovery (p. 446)
• Jump starting using another battery (p. 439)
• Selecting ignition mode (p. 404)

STARTING AND DRIVING
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* Option/accessory.451
Activating and deactivating thecompass
An integrated compass in the upper right corner of the rearview mirror shows the direction thevehicle is traveling.
Activating and deactivating the compass
The compass is automatically activated when the vehicle is started. To deactivate/activate the compass manually:
–Use a paper clip or similar object to press the button on the bottom of the mirror.
Related information
• Compass (p. 450)
• Calibrating the compass (p. 451)
Calibrating the compass
The globe is divided into 15 magnetic zones. The compass should be calibrated if the vehicleis driven from one zone to another.
To calibrate the compass:
1. Stop the vehicle in a large, open area away from steel constructions and high-voltage power lines.
2. Start the engine and switch off all electrical equipment (climate system, wipers, etc.) andmake sure all doors are closed.
NOTE
Calibration may fail or not even be initiated if electrical equipment is not turned off.
3. Hold the button on the bottom of the rear-view mirror pressed for about 3 seconds (using e.g. a paper clip). The number of thecurrent magnetic zone is shown.
15
14
13
12
11
9
8
7
6
5
4
3
2
1
10
Magnetic zones.
4. Press the button on the underside of themirror repeatedly until the desired magnetic zone (
1–15) appears (see the map of mag-
netic zones).
5. Wait until the display again shows
C, or
press and hold the button on the underside of the rearview mirror for approx. 6 seconds until
C is displayed.
6. Drive slowly in a circle at a speed of no more than 10 km/h (6 mph) until a compass direc- tion is shown in the display. This indicatesthat calibration is complete. Drive in a circletwo more times to fine-tune the calibration.
7. Vehicles with heated windshields *: If
C is
shown in the display when the windshield heating function is activated, perform step 6above with the heating function on.

AUDIO, MEDIA AND INTERNET
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* Option/accessory.455
Sound experience *
Recreate the acoustics from the Gothenburg Concert Hall.
Sound Experience
is opened from the center
display's app view and gives access to further audio settings. The following settings are possi-ble:
•
Studio - the sound can be optimized forDriver, All and Rear.
•
Individual stage - surround sound mode
with settings for intensity and enclosure.
•
Concert hall - reproduces the acoustics of
Gothenburg's Concert Hall
Active noise suppression *Some vehicles are equipped with an active noise suppression function that reduces engine noisein the passenger compartment using the audiosystem. Microphones in the ceiling liner detect distracting noise and the audio system sends outa counteracting sound to help reduce the unwan-ted noise.
Microphones in the ceiling lining.
NOTE
Do not cover the vehicle microphones.
Related information
•
Media player (p. 475)
• Voice control settings (p. 150)
• Phone settings (p. 496)
• Audio, media and Internet (p. 454)
• Internet-connected vehicle
* (p. 497)
Apps
The App view contains applications (apps) that provide access to certain vehicle services.

AUDIO, MEDIA AND INTERNET
* Option/accessory.
482
Playing media via the USB port External audio sources, such as an iPod ® or
MP3 player, can be connected to the audio sys- tem via the vehicle's USB port.
Devices with rechargeable batteries can be charged when they are connected via the USB port and the ignition is in mode I, II or the engine
is running. The content on the external source can be read faster if it only contains data of a compatible for-mat. Video files can also be played via the USBport. Some MP3 players have their own file system that the vehicle has support for.
Related information
• Connecting a device via the USB port(p. 482)
• Playing media (p. 476)
• Video (p. 480)
• Ignition modes (p. 403)
• Technical specifications for USB devices(p. 505)
• Apple ®
CarPlay ®
* (p. 483)
• Android Auto
* (p. 486)
Connecting a device via the USBport
External audio sources, such as an iPod ®
or
MP3 player, can be connected to the audio sys- tem via any of the vehicle's USB ports.
If the vehicle has two USB ports, the phone must be connected to the port with the white frame to use Apple CarPlay * or Android Auto *.
USB ports (type A) in the tunnel console. Route the cable forward to help avoid pinching when the cover isclosed.
Related information
• Playing media (p. 476)
• Playing media via the USB port (p. 482)
• Media player (p. 475)
• Technical specifications for USB devices (p. 505) •
Technical specifications for USB devices(p. 505)
• Apple ®
CarPlay ®
* (p. 483)
• Android Auto
* (p. 486)

||
WHEELS AND TIRES
* Option/accessory.
530
NOTE
Always remember to calibrate the Tire Pres- sure Monitoring System when the wheelshave been changed or the tire inflation pres-sure has been corrected according to the tirepressure decal or tire inflation pressure table. If correct reference values have not been set, the system cannot issue low tire pressurealerts correctly. The vehicle must be stationary with the engine running to access the calibration but-ton and to start the calibration process.
WARNING
The exhaust gases contain carbon monoxide, which is invisible and odorless but very poi-sonous. For this reason, always perform thecalibration procedure outdoors or in a work-shop with exhaust gas evacuation equipment.
Related information
• Recommended tire pressure (p. 527)
• Adjusting tire pressure (p. 526)
• Viewing tire pressure status in the center display
* (p. 530)
• Action when warned of low tire pressure (p. 531)
• Tire pressure monitoring system
* (p. 527)
Viewing tire pressure status in the
center display *
With the system for tire pressure monitoring, Tyre Pressure Monitoring System (TPMS), tirepressure status can be viewed in the center dis-play.
Checking status1. Open the Car status app in App view.
2.Tap TPMS to display the status of the tires.
Status indicator light
The graphic in the center display shows the sta- tus of each tire 8
.
Green tire:
• Inflation pressure is above the warning threshold.
Yellow tire:
• The tire's inflation pressure is too low. Stopand check/inflate the tire as soon as possi-ble. Recalibrate the system after adjustingthe tire pressure.
All tires yellow:
• The inflation pressure is too low in one ormore tires. Stop and check/inflate the tiresas soon as possible. Recalibrate the systemafter adjusting tire pressure.
All tires gray: • Calibration in progress.
• Status unknown.
8
The illustration is generic. Layout may vary depending on vehicle model or software version.

WHEELS AND TIRES
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539
Snow tires
Snow tires are designed for winter driving.
Volvo recommends snow tires with specific dimensions. The tire dimensions vary dependingon engine type. When driving with snow tires, thecorrect type of tires must be mounted on all fourwheels.
NOTE
Contact a Volvo dealer for advice on the best choice of rims and tires.
Tips for changing snow tiresWhen switching between regular tires and snow tires, mark the tires according to which side they were mounted on, e.g. L for left and R for right.
Studded tiresStudded tires should be broken in by driving 500–1000 km (300–600 miles) slowly and gen-tly to help the studs settle properly in the tires.This gives the tire, and especially the studs, alonger service life.
NOTE
Regulations regarding the use of studded tires vary from country to country.
Tread depthRoad conditions with ice, slush and low tempera- tures place considerably higher demands on tiresthan summer conditions. Volvo therefore recom-mends not driving on snow tires that have a treaddepth of less than 4 mm (0.15 inch).
Related information
• When changing wheels (p. 532)
• Winter driving (p. 432)
• Tread wear indicator (p. 521)
Snow chains
Using snow chains and/or snow tires can help improve traction in winter driving conditions.
WARNING
Use Volvo genuine snow chains or equivalent snow chains that are suitable for the vehicle model and the tire and wheel sizes. Only one-
sided snow chains are permitted.
If uncertain about snow chains, Volvo recom- mends contacting an authorized Volvo work-shop. Use of the wrong snow chains couldcause serious damage to the vehicle andresult in an accident.

WHEELS AND TIRES
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543
7. Connect the electrical cable to the nearest
12 V outlet and start the vehicle.
NOTE
Make sure that none of the vehicle's other 12 V sockets are used while the compressoris running.
WARNING
Never leave children unattended in the vehicle while the engine is running. 8. Start the compressor by moving the switch to
the I (On) position.
WARNING
Never stand next to a tire being inflated with the compressor. If cracks, bulges, etc. form onthe tire, switch off the compressor immedi-ately. The vehicle should not be driven. Callroadside assistance to have the vehicle towedto a workshop for inspection/replacement ofthe tire. Volvo recommends an authorizedworkshop.
NOTE
When the compressor first starts, air pressure may temporarily increase up to 6 bar (88 psi)but should decrease again after approxi-mately 30 seconds.
9. Inflate the tire for 7 minutes.
CAUTION
To help avoid overheating, the compressor should never be used for more than10 minutes at a time.
10. Switch off the compressor and check the
inflation pressure using the air pressure gauge. The inflation pressure should bebetween 1.8 bar (22 psi) and 3.5 bar(51 psi). If the inflation pressure is too high,use the air release valve to release air.
WARNING
If the bottle is not removed in the correct order, sealant could spill out.
WARNING
If pressure falls below 1.8 bar (22 psi), the hole in the tire may be too large. The vehicleshould not be driven. Call roadside assistanceto have the vehicle towed to a workshop forinspection/replacement of the tire. Volvo rec-ommends an authorized workshop.
11. Switch off the compressor and remove the electrical cable.
12. Unscrew the hose from the tire's valve and screw the valve cap back on.
13. Put the protective hose cover onto the hose to help prevent leakage of any residual seal- ing compound. Return the equipment to thecargo compartment.