2018 VOLVO XC90 T8 coolant temperature

CLIMATE CONTROL
* Option/accessory.
230
Parking climate
The passenger compartment climate can be pre- conditioned or maintained when the vehicle isparked. For full functionality, the vehicle's charg-ing cable must be plugged in.
Preconditioning and the climate comfort retaining func- tion are controlled from the Parking climate tab in the
center display's Climate view.
Related information
• Climate (p. 202)
• Preconditioning (p. 230)
• Climate comfort retaining function (p. 234)
• Parking climate symbols and messages (p. 236)
Preconditioning
Preconditioning the vehicle before driving can help reduce wear and reduce energy consump-tion during a trip.
Preconditioning can be started immediately or started at a preset time using a timer. The function utilizes several of the vehicle's sys- tems:
• In cold weather, the high-voltage coolantheater (HVCH) heats the passenger com-partment to a comfortable temperature.
• In warm weather, air conditioning cools thepassenger compartment to a comfortabletemperature.
• The electrically heated steering wheel
* and
seats * can be activated.
• Heating for the windshield, rear window anddoor mirrors are automatically activated asneeded.
During preconditioning in a hot climate, conden-sation from the air conditions may drip under thevehicle. This is normal.

STARTING AND DRIVING
* Option/accessory.
468
Overheating of engine andtransmission
In demanding driving conditions, such as driving in mountainous areas or hot weather, there is arisk of the engine or transmission overheating,especially when carrying heavy loads.
• Engine power may be temporarily limited.
• Remove any auxiliary lights mounted in front of the grille when driving in hot weather.
• If the temperature in the engine's coolingsystem becomes too high, a warning symbolwill appear in the instrument panel along with the message
Engine temperature High
temperature Stop safely. Pull over to a
safe location and let the engine idle for a few minutes to cool down.
• If the message
Engine temperature High
temperature Turn off engine or Engine
coolant Level low, turn off engine is dis-
played, stop the vehicle and turn off the engine.
• If the transmission begins to overheat, analternative gear shifting program will beselected. An integrated protective functionwill also be activated, the warning symbol will illuminate and the message
Transmission
warm Reduce speed to lower
temperature or Transmission hot Stop
safely, wait for cooling will be displayed in
the instrument panel. Follow the recommen- dations given by reducing speed or stopping the vehicle safely and letting the engine idle for a few minutes to let the transmissioncool.
• If the vehicle begins to overheat, the air con-ditioning may be temporarily switched off.
• After a prolonged period of driving indemanding conditions, do not turn off theengine immediately after stopping.
NOTE
It is normal for the engine's cooling fan to operate for a short time after the engine isswitched off.
Symbols in the instrument panel
SymbolMeaning
High engine temperature. Follow the recommendations provided.
Low coolant level. Follow the rec- ommendations provided.
Transmission hot/overheated/cool- ing. Follow the recommendationsprovided.
Related information
• Refilling coolant (p. 612)
• Driving with a trailer (p. 472)
• Preparing for a long trip (p. 460)
• Gear indicator
* (p. 442)

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MAINTENANCE AND SERVICE
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 availablewill 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 beused to warm the passenger compartment.
When refilling coolant, follow the instructions on the package. Never fill the cooling system withonly water. The risk of freezing is increased withtoo 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 (about2 quarts) of coolant has been added to the sys-tem, there could be something wrong with thecooling system and starting the vehicle coulddamage the engine. Call a tow truck and do notattempt to start the engine.
WARNING
The coolant may be very hot. Never unscrew the cap when the coolant is hot. If coolantmust be filled, unscrew the expansion tankcap slowly to relieve overpressure.
Coolant expansion tank.

MAINTENANCE AND SERVICE
}}
* Option/accessory.613
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 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 ofthe water, use a Volvo-recommendedpremixed 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 inthe cooling system.
• Never run the engine unless the coolingsystem is properly filled. An improperlyfilled cooling system could lead to hightemperatures and cracks in the cylinderheads.
• High levels of chlorine, chlorides andother salts may cause corrosion in thecooling 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 formore 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 condensationon the inside of the lens. This is normal. Allexterior lighting is designed to resist this.Condensation is normally vented out of thelamp housing once the light has been lit forsome 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)

INDEX
669
Charge level
vehicle function 459
Charging hybrid battery 407 opening and closing the charging
door 411
start charging 412
Status 414, 415, 416
stop charging 418
Charging cable 409
Charging current 408
Checking engine oil level 611
Child restraints 63, 65 booster cushions 71
convertible seats 69
infant seats 67
integrated booster cushion 76
ISOFIX/LATCH anchors 74
lower attachment points 74
recalls and registration 65
top tether anchors 72
Child safety 63
Child safety locks 259
Circuit breaker 410
City Safety 335, 336, 338, 339, 344, 346
City Safety in crossing traffic 341, 342
City Safety when evasive maneuver preven- ted 343
Cleaning 635, 637, 638 automatic car wash 641
car wash 638, 639, 641, 642, 643, 644
center display 633
Seat belts 635
textile upholstery 633, 635, 636
upholstery 633, 635, 636, 637, 638
wheels 644
Cleaning wheels 644
Cleaning wiper blades 642
Clean Zone 205
Clean Zone Interior Package 206
Climate 202 auto-regulation 219
blower control 224, 225
parking 230
perceived temperature 203
Sensors 202
temperature control 226, 227, 228
voice control 203
zones 202
Climate controls 213 center display 213
rear seat 213Climate system 202, 213
Refrigerant 664
repairs 608
Clock, setting 93
Collision 42, 47, 52, 61Collision warner detection of pedestrians 339
radar sensor 326
Collision warning 335, 347
Color code, paintwork 646
Color codes 646
Compass 481, 482 calibration 482
Condensation in headlights 639, 641, 642, 643
Connecting vehicle to Internet No connection or poor connection 534
via a mobile device (WiFi) 531
via mobile device (Bluetooth) 531
via vehicle's modem 532
Connect phone 521
Contact information 26
Convertible seats 69
coolant 663
Coolant, filling 612

INDEX
671
Electronic immobilizer 252
emergency brake lights 160
Emission inspection readiness 598Engine
automatic start and stop of combustion
engine 444
overheating 468
start 424
turn off 426
Engine braking, automatic 454 Engine compartment coolant 612
engine oil 610
overview 609
Engine drag control 274
Engine oil 610 filling 611
filter 610
grade and volume 662
Engine shutdown 426
Engine specifications 661Engine temperature high 468
Environment 27 Error messages Adaptive Cruise Control 309
see Messages and symbols 309, 324
Error messages in BLIS 352 Ethanol content
max. 10% by volume 464
Exterior dimensions 657
F
Federal Clean Air Act 598
Ferry transport 450
Flat tire 572
Flooded road 462
Fluids, volumes 650, 664
Fluids and oils 663, 664Fog lights rear 159
Four-C 450 Front seat blower 224
climate 213
heating 215, 216
temperature 226
ventilation 217
Front seat manual 184
Front seats, power 185 adjusting passenger seat from driver's
seat 191
adjusting seat 185
Lumbar support 190
massage 188, 189
memory function 186, 187
multifunction control 188, 189, 190
Side bolsters 190
FSC, environmental labeling 23
Fuel 464 Travel Link service 505
Fuel filling 463
Fuel gauge 86
Fuel requirements 464, 465 Fuel tank volume 664
Fuse box 621Fuses below the glove compartment 626
general 620
in engine compartment 622
in the cargo compartment 629
replacing 621
G
Gasoline grade 464 Gauge
fuel gauge 86