cooling VOLVO XC90 T8 2016 Owner´s Manual

STARTING AND DRIVING
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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.

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WHEELS AND TIRES
4686. Turn off the compressor (press the on/off
switch to position 0) when the correct infla-
tion pressure has been reached.
CAUTION
• After inflating the tires, always reinstall the valve cap to help avoid damage to thevalve from dirt, gravel, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
7. Disconnect the electrical wire from the 12-
volt socket.
Related information
• Checking tire inflation pressure (p. 451)
• Tire sealing system (p. 461)
Refilling coolant
Coolant helps keep the gasoline engine at the proper operating temperature. The heat transfer-red from the engine to the coolant can be usedto warm the passenger compartment.
When refilling coolant, follow the instructions on the package and use the recommended amountof coolant. Never fill the cooling system withwater only; this could lead to freezing, corrosionand engine damage.
WARNING
If the engine has been running, the coolant will be very hot. Allow the engine to coolbefore opening the coolant expansion tank. Ifthis is not possible, open the cap very slowlyto allow pressure to dissipate.
Lift the rubber strip by pressing it inward in the engine compartment.
Remove the plastic cover by folding out the catch and lifting the cover upward.
Remove the expansion tank and add coolant. The level should be between the MIN and
MAX marks on the tank.
Put the other components back in place in the reverse order.

WHEELS AND TIRES
469
CAUTION
•High levels of chlorine, chlorides and other salts may cause corrosion in thecooling system.
• Only use coolants with corrosion protec-tion recommended by Volvo.
• The ratio of coolant to water is 50/50.
• Mix the coolant with tap water of drinka-ble quality.
• If maintenance is performed on the cool-ing system or if the coolant is replaced,flush the cooling system with clean waterbefore adding new a new coolant/watermixture.
• The engine may only be operated with aproperly filled cooling system. Otherwise,high temperatures and cracks in the cyl-inders may occur.
Related information
•Coolant specifications and volumes (p. 528)

MAINTENANCE AND SERVICING
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The start battery is located in the cargo compartment
There are two versions of the start battery, depending on the vehicle model.
Battery
H8 AGM
Current (V)12
Cold start capacity (Cold CrankingAmperes - CCA)(A)
850
Dimensions, L×W×H in. (mm)13.9×6.9×7.5
(353×175×190)
Capacity (Ah)95
The H8 AGM is held in place by a strap. Ensure that this strap is pulled taut.
H8 AGM battery with strap
• When replacing the start battery an Absorbed Glass Mat (AGM) must be used.
• When replacing the start battery, a new bat-tery with the same specifications and dimen-sions must be used. The battery should onlybe replaced by a trained and qualified Volvoservice technician.
Related information
• Jump starting (p. 365)
• Battery symbols (p. 482)
Hybrid battery
The vehicle's electric motor is powered by a rechargeable, maintenance-free, lithium-ionhybrid battery.
The vehicle cannot be started if the hybrid battery is completely discharged.
WARNING
The vehicle's hybrid battery may only be serv- iced or replaced by a trained and qualifiedVolvo service technician.
Battery coolantThe hybrid battery's cooling system has its own expansion tank.
Filling the hybrid battery's cooling system should only be done by a trained and qualified Volvoservice technician.

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MAINTENANCE AND SERVICING
* Option/accessory, for more information, see Introduction.
486 •
Fuses 1–13, 18–30, 35–37, 46–54 and 55–70 are called "Micro".
• Fuses 14–17, 31–34 and 71–78 are called"MCase" and should only be replaced by atrained and qualified Volvo service technician.
Function[A]
Converter for controlling feed to the rear axle electric motor5
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Control module for engaging/ changing gears5
High Voltage Coolant Heater control module5
Control module for: charge mod- ule, heat exchanger cut-off valve,cut-off valve for coolant throughthe climate system5
Hybrid battery control module for high-voltage converter forcombined high-voltage genera-tor/starter motor with 500 V–12V voltage converter5
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Function[A]
Converter for controlling feed to the rear axle electric motor10
Hybrid battery control module for high-voltage converter forcombined high-voltage genera-tor/starter motor with 500 V–12V voltage converter10
Charging module5
Cut-off valve for hybrid battery coolant; coolant pump 1 forhybrid battery10
Coolant pump for electric drive system10
Hybrid component cooling fan25
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Function[A]
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Front USB socket
*5
12-volt socket in the front tun- nel console15
12-volt socket on the rear side of the tunnel console A
12-volt socket in the tunnel con-sole between the rear seats B15
12-volt socket in the cargo com- partment USB sockets for iPad holders B15
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Heated windshield
* driver sideShunt
Heated windshield * driver side40
Headlight washers *25
Windshield washer25

MAINTENANCE AND SERVICING
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Hood completely closed
Related information
•Engine compartment overview (p. 505)
• Door and seat belt reminders (p. 67)
Engine compartment overview
The engine compartment overview shows some maintenance points.
Some of the components in the vehicle's electri- cal drive system are located in the engine com-partment.
WARNING
• Orange cables should only be handled by a trained and qualified Volvo service tech-nician.
• A number of the vehicle's componentsuse high voltage and can be very danger-ous if handled improperly.
• Do not touch any components that havenot been clearly described/explained inthis manual.
• Use caution when checking/refilling flu-ids in the engine compartment.
• The cooling fan (located at the front ofthe engine compartment, behind the radi-ator) may start or continue to operate (forup to 6 minutes) after the engine hasbeen switched off.
• Engine cleaning should only be done by aworkshop. If engine cleaning agents areused when the engine has been running,there may a fire risk.
• Before performing any operations in theengine compartment, the ignition shouldalways be completely switched off (in mode
0) and there should be no remote
keys in the passenger compartment. Thegear selector should be in the P (park)
position. If the engine has been running, wait until it has cooled before touchingany components in the engine compart-ment.