2020 VOLVO XC90 TWIN ENGINE engine coolant

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MAINTENANCE AND SERVICE
6101.
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 vehiclemust have been driven approximately30 km (20 miles) and have been stationary5 minutes on a level surface and with theengine off before the correct oil level willbe displayed.
NOTE
If the conditions for measuring oil level are not properly fulfilled (time after engineshutdown, vehicle inclination, ambient temperature, etc.) the message
No value
available will be shown in the center dis-
play. This does not mean that anything is
wrong in the vehicle systems.
Related information
Engine oil (p. 608)
Engine oil specifications (p. 669)
Ignition modes (p. 415)
Vehicle status (p. 601)
Refilling coolant
Coolant helps keep the combustion engine at the right operating temperature. The heattransferred from the engine to the coolantcan be used to warm the passenger compart-ment.
When refilling coolant, follow the instructions on the package. Never fill the cooling systemwith only water. The risk of freezing isincreased with too low or too high amounts ofcoolant. If there is coolant under the vehicle, smoke from the cooling system, or if more than2 liters (about 2 quarts) of coolant has beenadded to the system, there could be some-thing wrong with the cooling system and star-ting the vehicle could damage the engine. Calla tow truck and do not attempt to start theengine.
WARNING
The coolant may be very hot. Never unscrew the cap when the coolant is hot. Ifcoolant must be filled, unscrew the expan-sion tank cap slowly to relieve overpres-sure.

MAINTENANCE AND SERVICE
611
Coolant expansion tank.
Lift 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 bebetween the MIN and MAX marks on the
expansion tank.
CAUTION
Do not ingest the contents. May cause damage to organs (kidneys).
Use premixed coolant according toVolvo's recommendations. If concen-trated coolant is used, make sure thatthe coolant mixture is 50% coolantand 50% water of acceptable quality.
Do not mix different types of coolant.
To help ensure sufficient corrosion pro-tection in the system, only use newcoolant when replacing larger compo-nents in the cooling system.
Never run the engine unless the cool-ing system is properly filled. Animproperly filled cooling system couldlead to high temperatures and cracksin the cylinder heads.
High levels of chlorine, chlorides andother salts may cause corrosion in thecooling system.
Related information
Engine compartment overview (p. 607)
Coolant specifications (p. 670)

MAINTENANCE AND SERVICE
617
Hybrid battery The vehicle's electric motor is powered by a rechargeable, maintenance-free, lithium-ionhybrid battery.
NOTE
The vehicle cannot be started if the hybrid battery is discharged.
NOTE
If both the starter battery and the hybrid battery are discharged, both batteries
must be charged. In such cases, it is notpossible to charge only the hybrid batteryfirst. The starter battery must have a certain level of charge for it to be possible tocharge the hybrid battery.
WARNING
Hybrid battery replacement may only be performed by a workshop – an authorizedVolvo workshop is recommended.
CoolantThe hybrid battery's cooling system has its own expansion tank.
CAUTION
Filling the hybrid battery coolant should only be performed by a workshop – anauthorized Volvo workshop is recom-mended.
Specifications for hybrid batteryType: Lithium-ion
Power reserve: 11.6 kWh.
NOTE
The capacity of the hybrid battery decrea- ses with age and use, which could result inincreased use of the combustion engine,leading to higher fuel consumption andreduced electric motor range.
Related information
Battery symbols (p. 618)
Start battery (p. 613)
Charging the hybrid battery (p. 395)
Battery recycling (p. 618)

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MAINTENANCE AND SERVICE
* Option/accessory.
632
Function Ampere Type
Fuses in the trunk/cargo compartment 10 Micro
Control module for Internet-connected vehicle; Control module for Volvo On Call 5 Micro
–20
– Micro
Infotainment control module (amplifier)
40
MCaseA
Climate system blower module (rear)
* 40
MCaseA
Multi-band antenna module
5 Micro
Front seat massage function* 5 Micro
–
– Micro
Rear window wiper15 Micro
Fuel pump control module15 Micro
Relay coils in distribution box in engine compartment; Relay coil for transmission oil pump; Medium-voltage converter; Integrated start generator 5 Micro
Opening trunk/tailgate with foot movement
* 5 Micro
Driver's seat heating
15 Micro
Front passenger's seat heating15 Micro
Coolant pump7.5 Micro
– – Micro

SPECIFICATIONS
668
Engine specifications Engine specifications (output, etc.) for each engine variant are shown in the table below.The specifications for Special Edition vehiclesmay vary.Twin Engine vehicles are powered by both agasoline engine and an electric motor (ERAD– Electric Rear Axle Drive).NOTE
Not all engines are available on all markets.
Engine
Engine codeA
Output
(kW/rps) Output
(hp/rpm) Torque
(Nm/rps) Torque
(ft. lbs./rpm) Number of cylinders
T8 Twin Engine B4204T28 233/100 313/6000 400/37–90 295/2200–5400 4
T8 Twin Engine Polestar B4204T39 245/100 328/6000 430/75 317/4500 4
A The engine code, component and manufacturer serial numbers can be found on the engine.
Electric motorMax. output: 65 kW (87 hp).
Torque: 240 Nm.
Related information
Type designations (p. 660)
Engine oil specifications (p. 669)
Coolant specifications (p. 670)

SPECIFICATIONS
670
Coolant specifications
Recommended grade: Volvo-approved pre-
mixed coolant. If concentrated coolant is used, mix with 50% water of acceptablequality (i.e. not salt water, etc.). Consult aVolvo retailer if you have any questions.
To avoid deterioration of the cooling system, engine trouble, etc., only approved Volvo cool-ant should be used.
WARNING
Coolant is hazardous if ingested and could cause damage to organs (kidneys). Theproduct contains ethylene glycol, inhibitor,water, etc.
Related information
Refilling coolant (p. 610)
Transmission fluid specifications
Under normal driving conditions, the trans- mission fluid will not need to be changed dur-ing the transmission's service life. However,it may need to be changed if the vehicle isdriven frequently in adverse driving condi-tions.
Automatic transmission
Prescribed transmission fluid: AW-1
Related information
Type designations (p. 660)
Brake fluid specifications
The medium in the hydraulic brake system is called brake fluid and is used to transfer brak-ing force from e.g. pressure on the brakepedal via a master brake cylinder to one ormore slave cylinders, which in turn act on amechanical brake.
Recommended grade: Volvo Original or simi-
lar fluid that meets a combination of Dot 4, 5.1 and ISO 4925 class 6.
NOTE
Changing or filling brake fluid should be entrusted to an authorized Volvo work-shop.
Related information
Engine compartment overview (p. 607)

INDEX
677
Drive mode 433
changing 438
driver support 314
Driver Alert Control 355 activating/deactivating 356
limitations 357
rest stop guidance 356
Driver performance 94 settings 95
Driver profile 139 edit 140, 141, 143
select 140
Driver support system 280 Drive mode 314
Drive systems 432 Driving cooling system 458
with a trailer 465
Driving economy 446
Driving through standing water 451 driving with a trailer towball load 667
towing capacity 667
E
Economical driving 446
Electrical outlet 580use 582
Electrical system 613Electric drive motor specifications 668
electric motor 432 Range 448
Electric parking brake 421
Electronic immobilizer 259
emergency brake lights 164
Emission inspection readiness 596Energy distribution using map data 439
Engine automatic start and stop of combus-
tion engine 433
overheating 458
start 412
turn off 414
Engine braking 417, 428, 445 Engine compartment coolant 610
engine oil 608
overview 607
Engine drag control 281
Engine oil 608 filling 609
filter 608
grade and volume 669
Engine shutdown 414
Engine specifications 668Engine temperature high 458
Environment 30Ethanol content max. 10% by volume 454
Exterior dimensions 663
Extra heater (Auxiliary heater) 240
F
Federal Clean Air Act 596
Ferry transport 440
Flooded road 451
Fluids, volumes 656, 671
Fluids and oils 670, 671 Fog lights rear 163
Four-C 440