2018 VOLVO XC90 coolant temperature

STARTING AND DRIVING
* Option/accessory.
446
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. 590)
• Driving with a trailer (p. 449)
• Preparing for a long trip (p. 439)
• Gear indicator
* (p. 422)

||
MAINTENANCE AND SERVICE
590
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. 587)
• Engine oil specifications (p. 644)
• Ignition modes (p. 407)
• Vehicle status (p. 580)
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
}}
591
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. 587)
• Coolant specifications (p. 645)
Replacing bulbs
The bulbs in the halogen headlights can be changed without the help of a workshop. 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.
The headlight bulbs can be replaced without the assistance of a workshop, but before a bulb canbe replaced, the plastic cover over the headlightneeds to be removed. The low beam lights will be accessible when the headlight's round rubber cover has beenremoved. The bulbs of the turn signals, high beam and day- time running lights/parking lights are accessibleonce the rectangular headlight cover has beenremoved.
13 LED (Ligth Emitting Diode)

INDEX
651
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 257
City Safety 333, 334, 336, 337, 342, 344
City Safety in crossing traffic 339, 340 City Safety when evasive maneuver preven- ted 341
Cleaning 617, 619, 620 automatic car wash 623
car wash 620, 621, 623, 624, 625, 626
center display 615
Seat belts 617
textile upholstery 615, 617, 618
upholstery 615, 617, 618, 619, 620
wheels 626
Cleaning wheels 626
Cleaning wiper blades 624
Clean Zone 209
Clean Zone Interior Package 210
Climate 206 auto-regulation 223
blower control 228, 229
perceived temperature 207
Sensors 207
temperature control 230, 231, 232
voice control 208
zones 206
Climate controls 217 center display 217
rear seat 217
Climate system 206, 217 Refrigerant 646
repairs 586
Clock, setting 94
Collision 42, 47, 52, 61 Collision warner detection of pedestrians 337
radar sensor 324
Collision warning 333, 345
Color code, paintwork 628
Color codes 628
Compass 459, 460 calibration 460
Condensation in headlights 621, 623, 624, 625Connecting vehicle to InternetNo connection or poor connection 512
via a mobile device (WiFi) 509
via mobile device (Bluetooth) 509
via vehicle's modem 510
Connect phone 499
Contact information 26
Convertible seats 69
coolant 645
Coolant, filling 590 Cooling system overheating 446
Cornering illumination 162
Corner Traction Control 272
Corrosion protection 626Covering cargo compartment 568
Crash, see Collision 42
Crash event data 33
Cross Traffic Alert – CTA 351, 352, 353, 354
Cruise control 284, 285 manage speed 285, 286
temporary deactivation 287, 288
turn off 288
CTA – Cross Traffic Alert 351, 352, 353, 354
Curb weight 641