cooling VOLVO XC90 T8 2017 Owner´s Manual

||
MAINTENANCE AND SERVICING
508
WARNING
In certain models, the battery is held in place by a strap. Ensure that this strap is alwayssecurely fastened and pulled taut.
• 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. 382)
• Hybrid battery (p. 508)
• Charging the hybrid battery (p. 403)
• Battery symbols (p. 509)
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.
Related information
• Charging the hybrid battery (p. 403)

MAINTENANCE AND SERVICING
}}
* Option/accessory.513
replaced by a trained and qualified Volvo service technician.
Function
[A]
Converter for controlling feed to the rear axle electric motor 5
– –
– –
Control module for actuator for engaging/changing gears5
High Voltage Coolant Heater control module5
Control module for: A/C, charge module, heat exchanger cut-offvalve, cut-off valve for coolantthrough the climate system5
Hybrid battery control module; high-voltage converter for com-bined high-voltage generator/starter motor with 500 V–12 Vvoltage converter5
– –
Converter for controlling feed to the rear axle electric motor
10
Function
[A]
Hybrid battery control module for high-voltage converter forcombined high-voltage genera-tor/starter motor with 500 V–12V voltage converter 10
Charging module 5
Cut-off valve for hybrid battery coolant; coolant pump 1 forhybrid battery
10
Coolant pump for electric drive system
10
Hybrid component cooling fan 25
– –
– –
– –
– –
– –
– –
– –
– –
Function
[A]
Front USB socket* 5
12-volt socket in the front tun- nel console 15
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
– –
Driver's side headlight, certain LED models
15
Passenger's side headlight, cer- tain LED models15
– –
Heated windshield
* driver side Shunt
Heated windshield
* driver side 40
Headlight washers
*25
Windshield washer 25

||
MAINTENANCE AND SERVICING
534
Hood completely closed
Related information
•Engine compartment overview (p. 534)
• Door and seat belt reminders (p. 68)
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 touching

MAINTENANCE AND SERVICING
540
Refilling coolantCoolant 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.
Coolant expansion tank
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.
Unscrew the expansion tank cap 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.
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 (p. 560)