2018 VOLVO XC90 TWIN ENGINE Owners Manual

MAINTENANCE AND SERVICE
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607
Opening and closing the hood
To open the hood, pull the lever in the passen-
ger compartment and then turn the handle under
the hood.
Opening the hood
Pull the lever near the pedals to release the
hood from its fully closed position. Turn the handle under the front edge of the
hood counterclockwise to release the catch
and lift the hood.
Warning - hood not closedWhen the hood is released, a warning
symbol and graphic will be displayed in
the instrument panel and an audible
signal will sound. If the vehicle begins
to roll, the audible signal will be repeated several
times.
NOTE If the warning symbol is illuminated or an
audible warning signal sounds even though
the hood is securely closed, consult a work-
shop - an authorized Volvo workshop is rec-
ommended.
Closing the hood1. Press down the hood until it begins to close
under its own weight.
2. When the hood reaches the catch at the handle in the front edge of the vehicle, press
down on the hood to close it completely.
WARNING Risk of injury! When closing, make sure that
the hood is completely unobstructed and that
no one can be injured.
WARNING
Make sure the hood locks securely after clos-
ing. It must audibly lock on both sides.
Hood not completely closed. The illustration is generic -
details may vary according to vehicle model.

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* Option/accessory.
608 Hood completely closed. The illustration is generic -
details may vary according to vehicle model.
WARNING
Never drive with the hood open!
If there are any indications while driving that
the hood is not completely closed, stop imme-
diately and close it securely.
Related information
•
Engine compartment overview (p. 609)
• Door and seat belt reminders (p. 51) Climate control system service
Service and repairs on the air conditioning sys-
tem should only be done by an authorized work-
shop.
Troubleshooting and repairsThe air conditioning system contains a fluores-
cent tracer substance. Ultraviolet light is used to
search for leaks in the system.
Volvo recommends contacting an authorized
Volvo workshop.
Vehicles with R134a refrigerant
WARNING
The air conditioning system contains the
refrigerant R134a under pressure. Service
and repairs to the system should only be done
by an authorized workshop.
Related information
•
Volvo's service program (p. 598) Replacing a windshield with head-
up display*
Vehicles with a head-up display have a special
type of windshield that meets the requirements
for displaying projected information.
Volvo recommends contacting an authorized
Volvo workshop for assistance replacing the
windshield. The correct type of replacement
windshield must be used in order for the head-up
display to function properly.
Related information
•
Head-up display* (p. 142)
• Cleaning the head-up display* (p. 634)

MAINTENANCE AND SERVICE
609
Engine compartment overview
This overview shows some service-related com-
ponents. Some of the components included in the vehi-
cle's electric drive system are located in the
engine compartment. Exercise caution when
accessing the engine compartment and only
touch what is required for normal maintenance.
WARNING Orange wiring may only be handled by quali-
fied personnel.
WARNING
Several components in the vehicle work with
high voltage that can be hazardous in case of
an incorrect procedure.
• Do not touch anything that is not clearly
described in this Owner's Manual.
• Be careful when checking/filling fluids in
the engine compartment. The layout of the engine compartment may vary depend-
ing on model and engine variant.
Coolant expansion tank
Brake fluid reservoir (located on the driver's
side)
Washer fluid filler pipe
11 Fusebox
Air filter
Engine oil filler pipe
WARNING Bear in mind that the cooling fan (located at
the front of the engine compartment behind
the radiator) may start or continue running
automatically up to about 6 minutes after the
engine is turned off.
Always entrust engine washing to a workshop
– an authorized Volvo workshop is recom-
mended. If the engine is hot, there is a risk of
fire.
WARNING
The ignition system works with extremely high
and dangerous voltages. The vehicle electrical
system should always be in ignition mode 0
when work in being performed in the engine
compartment.
Do not touch any spark plugs or ignition coils
when the vehicle electrical system is in igni-
tion mode II or when the engine is warm.
Related information
•
Opening and closing the hood (p. 607)
• Filling washer fluid (p. 650)
• Refilling coolant (p. 612)
• Fuses in the engine compartment (p. 622)
• Checking and filling engine oil (p. 611)
• Ignition modes (p. 427) 11
Fill the washer fluid at regular intervals, e.g. when refueling.

MAINTENANCE AND SERVICE
610Engine oil
For the recommended service intervals and war-
ranties to be applied, an approved engine oil
must be used. Volvo recommends: If the engine oil is not checked regularly and the
level becomes low, this could cause serious
engine damage.
CAUTION
To satisfy the requirements for the engine's
service intervals, all engines are factory-filled
with a specially adapted synthetic engine oil.
Great care has been put into the choice of oil,
with consideration given to service life, starta-
bility, fuel consumption and environmental
impact.
For the recommended service intervals to
apply, an approved engine oil must be used.
Only use the prescribed oil grade to top off or
change the oil. Otherwise, there is a risk of
the vehicle's service life, startability, fuel con-
sumption and environmental impact being
affected.
Failure to use engine oil of the prescribed
grade and viscosity could cause damage to
engine-related components. Volvo Car Corpo-
ration disclaims warranty liability for such type
of damage.
Volvo recommends entrusting oil changes to
an authorized Volvo workshop.
Volvo uses different systems to warn if the oil
level is too low/high or the oil pressure is low. On
engine variants with an oil pressure sensor, awarning symbol is displayed in the instrument
panel when oil pressure is low . On engine
variants with an oil level sensor, the warn-
ing symbol in the instrument panel and display
messages are used to alert the driver. Some
engine variants have both systems. Contact a
Volvo retailer for more information.
Change the engine oil and oil filter according to
the schedule specified in the Warranty and Main-
tenance Records Information booklet. Oils of a
higher grade than that specified may be used. If
the vehicle is driven in adverse conditions, Volvo
recommends using an oil with a higher grade
than that specified.
Related information
• Checking and filling engine oil (p. 611)
• Engine oil specifications (p. 662)

MAINTENANCE AND SERVICE
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611
Checking and filling engine oil
The engine oil level is monitored by an electronic
oil level sensor. Filler pipe
12
.
It may be necessary to top up engine oil between
regularly scheduled services.
No action is necessary with regard to engine oil
level until a message appears in the instrument
panel.
WARNING If this symbol is shown together
with the message
Engine oil level
Service required, visit a workshop – an authorized Volvo workshop is
recommended. The oil level may be too high.
CAUTION If this symbol is shown together
with a message about low oil level,
for example
Engine oil level low
Refill 1 liter, fill only with the indi-
cated volume, e.g. 1 liter (1 quart).
WARNING Do not spill oil on the hot exhaust pipes as
this could cause a fire.
Viewing oil level in the center displayThe oil level can be viewed using the electronic
oil level gauge in the center display once the
vehicle has been started. The oil level should be
checked regularly.
1.
Open the Car status app from App view in
the center display.
2. Tap Status to display the oil level. Oil level graphic in the center display.NOTE
The system cannot directly detect changes
when the oil is filled or drained. The vehicle
must have been driven approximately 30 km
(20 miles) and have been stationary
5 minutes on a level surface and with the
engine off before the correct oil level will be
displayed.
12
Engines with an electronic oil level sensor do not have a dipstick.

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612
NOTE
If the conditions for measuring oil level are
not properly fulfilled (time after engine shut-
down, vehicle inclination, ambient tempera-
ture, etc.) the message
No value available
will be shown in the center display. This does
not mean that anything is wrong in the vehi-
cle systems.
Related information
• Engine oil (p. 610)
• Engine oil specifications (p. 662)
• Ignition modes (p. 427)
• Vehicle status (p. 602) Refilling coolant
Coolant helps keep the combustion engine at
the right operating temperature. The heat trans-
ferred from the engine to the coolant can be
used to warm the passenger compartment.
When refilling coolant, follow the instructions on
the package. Never fill the cooling system with
only water. The risk of freezing is increased with
too low or too high amounts of coolant.
If there is coolant under the vehicle, smoke from
the cooling system, or if more than 2 liters (about
2 quarts) of coolant has been added to the sys-
tem, there could be something wrong with the
cooling system and starting the vehicle could
damage the engine. Call a tow truck and do not
attempt to start the engine.
WARNING The coolant may be very hot. Never unscrew
the cap when the coolant is hot. If coolant
must be filled, unscrew the expansion tank
cap slowly to relieve overpressure. Coolant expansion tank.

MAINTENANCE AND SERVICE
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* Option/accessory. 613Lift the rubber strip by pressing it inward into
the engine compartment.
Remove the plastic cover by folding out the
catch and lifting the cover upward.
Unscrew the expansion tank cap and fill
coolant as needed. The level should be
between the MIN and MAX marks on the
expansion tank.
CAUTION •
Mix the coolant with water of acceptable
quality. If you are unsure of the quality of
the water, use a Volvo-recommended
premixed coolant.
• Make sure the coolant mixture is 50%
water and 50% coolant.
• Only use coolants with corrosion protec-
tion recommended by Volvo.
• To help ensure sufficient corrosion pro-
tection in the system, only use new cool-
ant when replacing larger components in
the cooling system.
• Never run the engine unless the cooling
system is properly filled. An improperly
filled cooling system could lead to high
temperatures and cracks in the cylinder
heads.
• High levels of chlorine, chlorides and
other salts may cause corrosion in the
cooling system.
Related information
•Engine compartment overview (p. 609)
• Coolant specifications (p. 663) Replacing bulbs
Halogen headlights are not available on all mod-
els and markets. Contact a Volvo retailer for
more information.
LED 13
bulbs must be replaced by a workshop.
An authorized Volvo workshop is recommended.
NOTE For information on lights not mentioned in
this article, contact a Volvo dealer or a certi-
fied Volvo service technician.
NOTE
Exterior lighting such as headlights and tail-
lights may develop temporary condensation
on the inside of the lens. This is normal. All
exterior lighting is designed to resist this.
Condensation is normally vented out of the
lamp housing once the light has been lit for
some period of time.
NOTE
Bulbs for active curve lighting* contain traces
of mercury and should therefore always be
submitted to a certified Volvo service techni-
cian. 13
LED (Ligth Emitting Diode)

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614
Related information
•
Bulb specifications (p. 614) Bulb specifications
The following specifications apply to the bulbs in
the halogen headlights.
If you are experiencing problems with any other
lights, contact a workshop
14
. Function
WA
Type
Low beams

55 H11
High beams 65 H9
Front turn signal 24 PY24W
Daytime running light/
parking light, front 21/5 W21/5W A
Watt
Related information
• Replacing bulbs (p. 613) 14
An authorized Volvo workshop is recommended.