ECU VOLVO XC90 TWIN ENGINE 2018 Workshop Manual

||LOADING, STORAGE AND PASSENGER COMPARTMENT
594
WARNING
Objects in the cargo compartment must
always be securely anchored, even with a cor-
rectly installed cargo net.
Installing the cargo net
WARNING
All of the cargo net's upper consoles, hooks
and straps must be securely mounted and
attached before the net is used.
Never use the net if it is damaged.
NOTE
With front mounting, the cargo net is most
easily installed via a rear door.
1. Fold out the cargo net and make sure that
the upper rod folds out and locks into posi-
tion.
2.

Insert one of the net's hooks into the front or
rear ceiling mounting point with the strap
lock facing you. 3. Insert the other upper hook into the ceiling
mounting point on the opposite side. The
telescopic spring-loaded hooks make mount-
ing easier.
Make sure that the net's hooks are pushed
forward as far as possible into their respec-
tive mounting points. 4. Rear mounting: With the cargo net hooked
into the rear ceiling mounting points, attach
the net's straps into the front floor eyelets in
the cargo compartment. Rear mounting.
Front mounting: With the cargo net mounted
in the front ceiling mounting points, hook the
straps into the outer eyelets on the front seat
rails behind the seats. Attaching the net is
easier if the seat backrests are upright and
the seats are moved slightly forward.

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600
Monthly:
•
Check cold tire pressure in all tires. Inspect
the tires for wear.
• Check that engine coolant and other fluid
levels are between the indicated "min" and
"max" markings.
• Clean interior glass surfaces with a glass
cleaner and soft paper towels.
• Wipe driver information displays with a soft
cloth.
• Visually inspect battery terminals for corro-
sion. Corrosion may indicate a loose terminal
connector, or a battery near the end of its
useful service life. Consult your Volvo retailer
for additional information.
As needed:
Wash the car, including the undercarriage, to
reduce wear that can be caused by a buildup of
dirt, 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 places
where they may collect.
NOTE Complete service information for qualified
technicians is available online for purchase or
subscription at www.volvotechinfo.com.
Related information
•
Vehicle status (p. 602)
• Scheduling service and repairs (p. 603)
• Connecting equipment to the vehicle's data
link connector (p. 36)
• Technician certification (p. 37)
• Climate control system service (p. 608)
• Maintenance of the brake system (p. 432)
• Engine compartment overview (p. 609) Data transfer between vehicle and
workshop over Wi-Fi
Volvo workshops have a designated Wi-Fi net-
work for secure data transfer between your vehi-
cle and the workshop. Your visit to the workshop
will be easier and more effective when diagnos-
tics information and software can be transferred
over the workshop's network.
When you arrive at the workshop, your technician
can connect your vehicle to the workshop's Wi-Fi
network to perform troubleshooting and down-
load software. For this type of communication,
the vehicle only connects to the workshop's net-
work. The vehicle can only be connected to the
designated workshop networks, not to any other
network, e.g. your home network.
Manual connection to workshop Wi-FiManual connection is usually performed by a
service technician. Because the technician uses
the buttons on your remote key to connect the
vehicle, it is important that you bring a key with
buttons when taking the vehicle in to a workshop.
Pressing the lock button on the remote key three
times will connect the vehicle to the workshop's
Wi-Fi network.
When the car is connected to a Wi-Fi network,
the symbol appears in the center display.

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.

||MAINTENANCE AND SERVICE
* 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)

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615
Start battery
The vehicle has a single-pole electrical system
that uses the chassis and engine mount as con-
ductors.
The start battery is used to start the electrical
system and power electrical equipment in the
vehicle. The hybrid battery is used to start the
combustion engine.
The start battery should only be replaced by a
workshop 15
.
The start battery is a 12 V AGM (Absorbed Glass
Mat) battery, dimensioned for regenerative charg-
ing and to support the function of the vehicle's
various systems.
The service life and performance of the start bat-
tery are affected by factors such as driving style,
driving conditions, climate, battery discharges,
number of starts, etc.
• Never disconnect the start battery while the
engine is running.
• Make sure the cables to the start battery are
correctly connected and the clamps are
securely tightened.
WARNING •
Batteries generate hydrogen gas, which
is flammable and explosive.
• Do not connect the jumper cable to any
part of the fuel system or to any moving
parts. Avoid touching hot manifolds.
• Battery fluid contains sulfuric acid. Do not
allow battery fluid to contact eyes, skin,
fabrics or painted surfaces.
• If contact occurs, flush the affected area
immediately with water. Obtain medical
help immediately if eyes are affected.
• Never expose the battery to open flame
or electric spark. Do not smoke near the
battery. Failure to follow the instructions
for jump starting can lead to injury.
Connection points
WARNING PROPOSITION 65 WARNING
Battery posts, terminals, and related accesso-
ries contain lead and lead compounds, chemi-
cals known to the state of California to cause
cancer and reproductive harm. Wash hands
after handling.Use the vehicle's connection points in the engine
compartment to connect an external start battery
or battery charger.
The battery terminals on the car's starter battery
in the luggage/cargo area must not be used.
Positive connection point
Negative connection point
CAUTION
It is not possible to charge another vehicle's
battery by means of current through the
charging points. Using the charging points to
charge another vehicle's battery could cause
a fuse to blow, which would cause the charg-
ing points to stop working.
15
An authorized Volvo workshop is recommended.

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617
Location The start battery is located in the cargo compartment.WARNING If the starter battery is disconnected, the func-
tion for automatic opening and closing must
be reset to function correctly. A reset is
required in order for the pinch protection to
work.
CAUTION
On certain models, the battery is secured with
a tensioning strap. Make sure that the ten-
sioning strap is always securely tightened.
Specifications
Battery
H8 AGM
Voltage (V) 12
Cold start capacity A
- CCA B
(A) 850
Dimensions, L×W×H 353×175×190 mm (13.9×6.9×7.5 inches)
Capacity (Ah) 95A
According to EN standard.
B Cold Cranking Amperes.
Volvo recommends that batteries are replaced by
an authorized Volvo workshop. 16
Absorbed Glass Mat.

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635
Cleaning fabric upholstery and
ceiling liner
Only use cleaning agents and car care products
recommended by Volvo. Clean regularly and
treat stains immediately for best results. It is
important to vacuum before using a cleaning
agent.
Fabric upholstery and ceiling linerNever scrape or rub a stain, as this could damage
the upholstery. Never use strong stain removers,
as this could change the color of the upholstery.
Use soapy water or a similar detergent. For more
difficult stains caused by oil, ice cream, shoe pol-
ish, etc., use a stain remover. Consult with your
Volvo retailer.
Related information
•
Cleaning the interior (p. 633)
• Cleaning the center display (p. 633)
• Cleaning the seat belt (p. 635)
• Cleaning floor mats and inlay mats (p. 635)
• Cleaning leather upholstery (p. 636)
• Cleaning the leather steering wheel
(p. 637)
• Cleaning interior plastic, metal and wood sur-
faces (p. 638) Cleaning the seat belt
Only use cleaning agents and car care products
recommended by Volvo. Clean regularly and
treat stains immediately for best results. It is
important to vacuum before using a cleaning
agent.
Seat beltsUse water and a synthetic soap solution. Spe-
cially designed textile cleaning agents are availa-
ble for purchase at Volvo retailers. Make sure the
belt is dry before it is retracted.
Related information
• Cleaning the interior (p. 633)
• Cleaning the center display (p. 633)
• Cleaning fabric upholstery and ceiling liner
(p. 635)
• Cleaning floor mats and inlay mats (p. 635)
• Cleaning leather upholstery (p. 636)
• Cleaning the leather steering wheel
(p. 637)
• Cleaning interior plastic, metal and wood sur-
faces (p. 638) Cleaning floor mats and inlay mats
Only use cleaning agents and car care products
recommended by Volvo. Clean regularly and
treat stains immediately for best results. It is
important to vacuum before using a cleaning
agent.
Inlay mats and floor matsRemove the inlay mats to clean the floor mats
and inlay mats separately. Use a vacuum to
remove dust and dirt. Each inlay mat is secured
into place with pins.
Remove the inlay mat by grasping the inlay mat
at each pin and lifting the mat straight up.
Put the inlay mat back into place by pressing it in
at each pin.

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* Option/accessory.
636
WARNING •
Never use more than one inlay mat at a
time on the driver's floor. If any other type
of floor mat is used, remove the original
mat from the driver's seat floor before
driving. All types of mats must be securely
anchored in the attachment points in the
floor. Make sure the floor mat does not
impede the movement of the brake pedal
or accelerator pedal in any way, as this
could be a serious safety hazard.
• Volvo's floor mats are specially manufac-
tured for your vehicle. They must be prop-
erly secured in the attachment points in
the floor to help ensure they cannot slide
and become trapped under the pedals.
After vacuuming, a specially designed textile
cleaning agent should be used to remove stains
on floor mats. Floor mats should be cleaned with
products recommended by Volvo retailers.
Related information
• Cleaning the interior (p. 633)
• Cleaning the center display (p. 633)
• Cleaning fabric upholstery and ceiling liner
(p. 635)
• Cleaning the seat belt (p. 635)
• Cleaning leather upholstery (p. 636) •
Cleaning the leather steering wheel
(p. 637)
• Cleaning interior plastic, metal and wood sur-
faces (p. 638) Cleaning leather upholstery
Only use cleaning agents and car care products
recommended by Volvo. Clean regularly and
treat stains immediately for best results. It is
important to vacuum before using a cleaning
agent.
Leather upholstery*Volvo's leather upholstery is treated to protect its
original appearance. Over time, sunlight, grease,
dirt, etc. could break down the protective layer.
This could result in scratches and cracking.
Leather upholstery is a natural product that
changes and acquires a beautiful patina over
time. Regular cleaning and treatments are
required to preserve the qualities and color of the
leather. Volvo offers a comprehensive product,
Volvo Leather Care Kit/Wipes, for cleaning and
treating leather upholstery that, when used as
directed, preserves the leather's protective coa-
ting.
For best results, Volvo recommends cleaning and
applying protective cream one to four times a
year (or more as needed). Volvo Leather Care Kit
951 0251 and Volvo Leather Softener 943
7429 are available for purchase at Volvo retailers.

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641
Automatic car washes
The vehicle should be washed as soon as it
becomes dirty. This makes the vehicle easier to
clean because dirt does not attach as strongly. It
also reduces the risk of scratches and keeps the
vehicle looking new.
Automatic car washesAn automatic car wash is a fast and easy way to
keep your vehicle clean, but it does not reach all
areas of the vehicle. For best results, Volvo rec-
ommends hand washing your vehicle or supple-
menting automatic car washes with a hand wash.
NOTE
Volvo recommends not washing the vehicle in
an automatic car wash during the first few
months; the paintwork on new vehicles takes
some time to fully harden.
CAUTION
Before driving the vehicle into a car wash,
deactivate the Automatic Braking when Sta-
tionary and Automatic Parking Brake Applica-
tion functions. If the functions are not deacti-
vated, the brake system will seize when the
vehicle is stationary and the vehicle will not be
able to roll.
CAUTION For automatic car washes in which the vehicle
is pulled forward on rolling wheels:
1.

Before washing the vehicle, make sure
that the automatic rain sensor is deacti-
vated. If it is not deactivated and inadver-
tently starts, the wiper arms could be
damaged.
2. To help prevent damage from the auto- matic car wash machinery, make sure
that the door mirrors are folded in, anten-
nas retracted or removed, and any auxili-
ary lights secured.
3. Drive into the automatic car wash.
4. Turn off the "Automatic Braking when Stationary" function using the switch in
the tunnel console.
5. Turn off the "Automatic Parking Brake Application" function in the center dis-
play's Top view.
6. Turn off the engine by turning the start knob in the tunnel console clockwise.
Hold the knob in position for at least
2 seconds.
The vehicle is now ready for the automatic car
wash.
CAUTION The system will automatically change to P
mode if the above steps are not followed. In P
mode, the wheels are locked, which they
should not be when the vehicle is being
washed in a car wash.
Related information
•
Cleaning the exterior (p. 638)
• Polishing and waxing (p. 639)
• Hand washing (p. 639)
• High-pressure washing (p. 642)
• Cleaning the wiper blades (p. 642)
• Cleaning exterior plastic, rubber and trim
components (p. 643)
• Cleaning rims (p. 644)
• Corrosion protection (p. 644)

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647
It is important to use the right color.
Related information
•
Paintwork (p. 645)
• Touching up minor paint damage (p. 645) Changing rear window wipers
The wiper blades help remove water from the
windshield and rear window. Along with the
washer fluid, they clean the glass and help
improve visibility while driving. The windshield
and rear window wiper blades can be replaced.
Changing rear window wipers Lift the wiper arm from the window and pull the lower
section of the blade to the right.1. Grasp the center of the wiper blade and
lift it from the window to the stop position.
NOTE When the wiper arm is halfway folded out, it
will stop in a locking position that helps pre-
vent the arm from falling back onto the rear
window. The wiper arm must be pulled past
the locking position stop in order to change
the wiper blade.
2. Grip the lower part of the blade and pull
to the right until the blade loosens from the
arm.
3.

Press the new wiper blade until it clicks into
place. Check to make sure the blade is
securely in place.
4. Fold the wiper arm back toward the window.
CAUTION Check the blades regularly. Neglected main-
tenance shortens the life of the blades.
Related information
•
Using the rain sensor (p. 177)
• Using the windshield and headlight washers
(p. 179)
• Using automatic rear window wiping when
backing up (p. 181)