
STARTING AND DRIVING
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391
Available drive modes
HYBRID
This is the default mode. The vehicle normally starts in
Hybrid mode 4
. The
engine management system uses both the elec- tric motor and gasoline engine (separately or intandem) and calculates the optimal levels of per-formance, fuel consumption and comfort. Athigher speeds, ground clearance is reducedautomatically to help reduce wind resistance. The amount of driving done using only the elec- tric motor in
Hybrid mode is determined by the
hybrid battery's charge level and the need for heating/cooling in the passenger compartment. If sufficient electrical energy is available, only the electric motor will be activated when the driverpresses the accelerator pedal up to a certainlevel. Above this level, the gasoline engine willstart.The instrument panel gauge when both the electric motor and gasoline engine are being used
The long needle in the gauge indicates the amount of energy that the vehicle is currentlyusing. The short white line between the "light-ning" and "oil drop" symbols indicates theamount of energy available. See also the article"General information about the XC90 T8 TwinEngine Plug-in Hybrid" for additional information. The gasoline engine starts when the response required when the driver presses the acceleratorpedal cannot be provided by the electric motoralone. The gauge also indicates when the battery is being recharged (regenerated) during light brak-ing. See the article "Brakes" for additional infor-mation. When the hybrid battery's charge level is low, thegasoline engine will start more often to help con-serve electrical energy. Charge the battery withthe charging cable as soon as possible or switch to the
Save drive mode.
PURE
This mode activates the electric motor only with as low energy consumption as possible and thelowest possible carbon dioxide emissions. Ground clearance will be lowered to help reduce wind resistance and certain climate system func-tions will be reduced.
Pure mode is available when the hybrid battery is
sufficiently charged. If the level gets too low, the gasoline engine will start. The gasoline engine will also start: • If the vehicle's speed goes above approx. 75 mph (125 km/h)
• If the driver wants more response than theelectric motor alone can provide
• If factors such as cold weather, etc., affectthe system or components
To restart the climate system functions that have been reduced in the mode, press the,
AUTO or
defroster buttons.
4 Unless the vehicle was switched off in Off Road mode. If so, it will restart in Off Road mode.

MAINTENANCE AND SERVICING
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Emission inspection readiness
How do states use OBD II for emission
inspections?
Many states connect a computer directly to a vehicle's OBD II system. The inspector can thenread "faults." In some states, this type of inspec-tion has replaced the tailpipe emission test.
How can my vehicle fail OBD II emission
inspection?
Your vehicle can fail OBD II emission inspection for any of the following reasons.
• If your Check Engine (MIL) light is lit, your vehicle may fail inspection.
• If your vehicle's Check Engine light was lit,but went out without any action on your part,OBD II will still have a recorded fault. Yourvehicle may pass or fail, depending on theinspection practices in your area.
• If you had recent service that required dis-connecting the battery, OBD II diagnosticinformation may be incomplete and "notready" for inspection. A vehicle that is notready may fail inspection.
How can I prepare for my next
OBD II
emission inspection?
• If your Check Engine (MIL) light is lit – or was lit but went out without service, have yourvehicle diagnosed and, if necessary, servicedby a qualified Volvo technician.
• If you recently had service for a lit CheckEngine light, or if you had service that required disconnecting the battery, a periodof driving is necessary to bring the OBD IIsystem to "ready" for inspection. Two half-hour trips of mixed stop-and-go/highwaydriving are typically needed to allow OBD II toreach readiness. Your Volvo retailer can pro-vide you with more information on planning atrip.
• Maintain your vehicle in accordance with yourvehicle's maintenance schedule.
Owner maintenancePeriodic maintenance requirements and intervals are described in your vehicle's Warranty andService Records Information booklet. The following points can be carried out between the normally scheduled maintenance services.
Each time the car is refueled:
•Check the engine oil level.
• Clean the windshield, windshield wipers, headlights, and taillights.
Monthly:
•
Check cold tire pressure in all tires. Inspect the tires for wear.
• Check that engine coolant and other fluidlevels are between the indicated "min" and"max" markings.
• Clean interior glass surfaces with a glasscleaner and soft paper towels.
• Wipe driver information displays with a softcloth. •
Visually inspect battery terminals for corro-sion. Corrosion may indicate a loose terminalconnector, or a battery near the end of itsuseful service life. Consult your Volvo retailerfor additional information.
As needed:
Wash the car, including the undercarriage, to reduce wear that can be caused by a buildup ofdirt, and corrosion that can be caused by salt res-idues. Clean leaves and twigs from air intake vents at the base of the windshield, and from other placeswhere they may collect.
NOTE
Complete service information for qualified technicians is available online for purchase orsubscription at www.volvotechinfo.com.
Related information
•
Climate system service (p. 479)

MAINTENANCE AND SERVICING
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475
Remote updates With the vehicle connected to the Internet, updates for a number of the vehicle's systemscan be downloaded from the center display.
The Remote updates app is
started from the center dis- play's App view and makes itpossible to:
• search for and update system software
• update the Sensus Navigation maps
• download, update and uninstall apps
Related information
•Downloading, updating and uninstalling apps (p. 434)
• System updates (p. 474)
Vehicle status
The vehicle's general status can be displayed in the center display along with the possibility to book service 1
The Car status app is started
in the center display's App view and has three tabs:
•Messages: stored messages
•
Status: tire pressure and engine oil level
•
Appointments: booking service or repairs 1
Related information
•
Using the center display (p. 49)
• Booking service and repairs (p. 475)
• Checking inflation pressure (p. 458)
• Checking and refilling engine oil (p. 507)
Booking service and repairs Connected Service Booking (CSB) makes it possible to use the vehicle's Internet connectionto set up a time for service, maintenance and/orrepairs.
The information is handled through the Car
status app, which can be opened from the cen-
ter display's App view. Information about your vehicle is sent to your retailer and you can book your workshop appoint-ment directly in your retailer's workshop planningsystem using the Volvo On-Line Service Schedu-ler with your smart phone. The system will alsosend a reminder as the appointment approachesand the Sensus Navigation system will providedirections to the workshop if necessary. This feature makes it convenient to book a work- shop appointment directly from your vehicle.Vehicle-related information is sent to yourretailer, who prepares your visit to the workshop.The retailer will send an email to you're my Volvowebsite including a link enabling you to connectto the Volvo On-Line Service Scheduler whereyou can book a workshop appointment at a con-venient time. Information about your retailer isalso available in the vehicle so that you can con-tact the retailer/workshop at any time using the
Call my retailer menu option.
1 Certain markets only.
![VOLVO XC90 T8 2016 Owner´s Manual MAINTENANCE AND SERVICING
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* Option/accessory, for more information, see Introduction.487
Function[A]
––
Horn20
Alarm siren*5
Brake system control module (valves, parking brake)40
Windshield wip VOLVO XC90 T8 2016 Owner´s Manual MAINTENANCE AND SERVICING
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* Option/accessory, for more information, see Introduction.487
Function[A]
––
Horn20
Alarm siren*5
Brake system control module (valves, parking brake)40
Windshield wip](/manual-img/45/36400/w960_36400-488.png)
MAINTENANCE AND SERVICING
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* Option/accessory, for more information, see Introduction.487
Function[A]
––
Horn20
Alarm siren*5
Brake system control module (valves, parking brake)40
Windshield wipers30
Tailgate window washer25
Heated windshield *, passenger
side40
––
Brake system control module (ABS pump)40
––
Heated windshield *, passenger
sideShunt
Feed when ignition is switched on to: engine control module,transmission components, elec-trical power steering, centralelectrical module5
Exterior vehicle sound (certain markets)5
Function[A]
Passenger side headlight7,5
––
––
––
Air bags; Occupant Weight Sen- sor (OWS)5
Driver side headlight7,5
Accelerator pedal sensor5
Transmission control module; Gear selector control module15
Engine control module5
––
––
––
––
Engine control module; Turbo- charger valve20
Solenoids; Valves; Engine cool- ing system thermostat10
Function[A]
Vacuum regulators; Valve7,5
Spoiler shutter control module; Radiator shutter control module;Fuel leakage detection5
––
Heated oxygen sensors (front and rear)15
Oil pump solenoid; A/C mag- netic coupling; heated oxygensensor (center)15
––
Engine control module20
Ignition coil; Spark plugs15
––
––
Transmission oil pump control module30
Vacuum pump control module40
Transmission actuator25
––

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MAINTENANCE AND SERVICING
* Option/accessory, for more information, see Introduction.
492
FunctionA
Multi-band antenna module5
Front seat massage function5
––
Tailgate window wiper15
Fuel pump control module15
Relay windings for engine compart- ment electrical module; Relay wind-ing for transmission oil pump5
––
Driver side seat heating *15
Passenger side seat heating *15
Coolant pump10
––
Front driver-side door module20
Active chassis control module *20
––
Sensus control module10
––
FunctionA
––
Front passenger-side door module20
Display for rear seat convenience functionsA5A
––
Circuit breaker for fuses 53 and 5815
A
XC90 Excellence.
B Certain markets only.
Related information
• Fuses (p. 483)
• Replacing fuses (p. 483)

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Replacing bulbs
The halogen headlight bulbs can be replaced by the owner.
Before the bulbs can be replaced, that plastic covering over the headlight housing has to beremoved.
To do so:
Lift the rubber strip by pressing in toward the engine compartment.
Release the pins in the plastic covering's four clips by pressing them down with ascrewdriver or similar object and remove thecovering.
The turn signal, high/low beam, Daytime RunningLight and parking light bulbs will be accessiblewhen the plastic covering has been removed. Put the covering back in place in the reverse order.
NOTE
The pins in the clips have to be pressed back completely before the clips are placed in theplastic covering. When the covering is put back in place, the pins must be pressed so that their upper sur-face is flush with the surface of the clip.
NOTE
• For information regarding any bulbs not mentioned in this section, please contactyour Volvo retailer or a trained andauthorized Volvo service technician.
• Always switch off the ignition before star-ting to replace a bulb.
• If an error message remains in the dis-play after a faulty bulb has been replaced,contact an authorized Volvo workshop.
• Condensation may form temporarily onthe inside of the lenses of exterior lightssuch as headlights, fog lights, or taillights.This is normal and the lights aredesigned to withstand moisture. Normally,condensation will dissipate after thelights have been on for a short time.
• The optional Active Bending Light bulbscontain trace amounts of mercury. Thesebulbs should always be disposed of by atrained and qualified Volvo service techni-cian.
CAUTION
Never touch the glass of bulbs with your fin- gers. Grease and oils from your fingers vapor-ize in the heat and will leave a deposit on thereflector, which will damage it.

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MAINTENANCE AND SERVICING
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•The distributor ignition system operates at very high voltages. Special safety pre-cautions must be followed to prevent injury. Always turn the ignition
off when
replacing distributor ignition components e.g. plugs, coil, etc.
• Do not touch any part of the distributorignition system while the engine is run-ning. This may result in unintended move-ments and body injury.
The layout of the engine compartment may differ slightly from model to model
Coolant expansion tank
Brake fluid reservoir
Washer fluid reservoir
Relay/fuse box
Air cleaner
Engine oil filler cap
Related information
• Ignition modes (p. 370)
• Opening and closing the hood (p. 504)
• Refilling the windshield washer fluid reservoir (p. 511)
Engine oil
The correct oil must be used for the stated oil change (service) intervals to apply.
Volvo recommends:

MAINTENANCE AND SERVICING
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507
CAUTION
•Not checking the oil level regularly can result in serious engine damage if the oillevel becomes too low.
• Oil that is lower than the specified qualitycan damage the engine.
• Volvo does not recommend the use of oiladditives.
• Always add oil of the same type and vis-cosity as already used.
• Oil changes should be carried out by atrained and qualified Volvo service techni-cian.
• Using oil of higher than the specifiedquality is permitted and may be neces-sary for demanding driving.
Also, refer to the Warranty and Service Records information booklet for information on oil changeintervals and oil specifications.
Related information
•
Checking and refilling engine oil (p. 507)
Checking and refilling engine oil The oil level is checked electronically.
Oil filler cap 3
It may be necessary to top up engine oil between regularly scheduled services. No action is necessary until a message is dis- played in the instrument panel.
WARNING
•
Do not allow oil to spill onto or come into contact with hot exhaust pipe surfaces.
• If
Engine oil level Service required is
displayed, have the vehicle checked by a trained and qualified Volvo service techni-cian. The oil level may be too high.
Checking the oil levelThe oil level can be checked in the center display when theengine is not running. From the center display's Home view, swipe the screenfrom right to left to open App
view. Tap
Car status and then tap Status to
show the oil level.
Oil level graphic in the center display
The oil level should be checked at regular inter- vals, particularly during the period up to the firstscheduled maintenance service. If the oil level sensor indicates that the level is too low, using the correct oil, top up with theamount of oil indicated as soon as possible.
3 Models with an electronic oil level sensor do not have a dipstick.