2018 VOLVO S90 cooling

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MAINTENANCE AND SERVICE
562
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. 559)
• Engine oil specifications (p. 618)
• Ignition modes (p. 397)
• Vehicle status (p. 552)
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, left-hand drive vehicle.

MAINTENANCE AND SERVICE
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563
Unscrew the cover in the plastic covering.
Unscrew the expansion tank cap and fill coolant as needed. The level should not exceed the yellow MAX mark inside the
expansion tank.
Put the components back in place in the reverse order.
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. 559)
• Coolant specifications (p. 619)
Replacing bulbs
The bulbs in the halogen headlights and rear fog light can be changed without the help of a work-shop. 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. If you are experiencing problems with any lights other than light bulbs, contact a workshop 14
. If
there is a problem with an LED 13
light, the entire
lamp unit will normally need to be replaced.
WARNING
The vehicle electrical system must be in igni- tion mode 0 when bulbs are replaced.

MAINTENANCE AND SERVICE
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* Option/accessory.581
Fuse pliers are provided on the inside of the fuse box cover to assist in removing and insertingfuses. There are also spaces for several extra fuses in the fusebox.
PositionsThere is a decal with a diagram of the locationsof the fuses on the inside of the cover.
• Fuses 1-13, 18-30, 35-37 and 46-54 are"Micro" fuses.
• Fuses 14-17, 31-34 and 38-45 are"MCase" fuses and should only be replaced by a workshop 21
.
FunctionAA
– –
– –
– –
Ignition coils (gasoline); spark plugs (gasoline) 15
Oil pump solenoid; A/C mag- netic coupling; heated oxygensensor, center (gasoline); heatedoxygen sensor, rear (diesel)15
FunctionAA
Vacuum regulators; valve; valve for power pulse (diesel)
7.5
Engine control module; actuator; throttle unit; EGR valve (diesel);turbo position sensor (diesel);turbocharger valve (gasoline) 20
Engine control module 5
– –
Solenoids (gasoline); valve; Engine cooling system thermo-stat (gasoline); EGR coolingpump (diesel); glow controlmodule (diesel)10
Spoiler shutter control module; Radiator shutter control module;Relay windings for power pulse(diesel)
5
Heated oxygen sensor, front; Heated oxygen sensor, rear(gasoline)
15
Engine control module 20
Starter motor 40
FunctionAA
Starter motor Shunt
Fuel filter heater (diesel) 30
– –
– –
– –
– –
– –
– –
Front USB port in tunnel con- sole, front
* 5
12 V outlet in tunnel console, front
15
12 V outlet in tunnel console between rear seats15
12 V outlet in trunk/cargo com- partment
* 15
– –
– –
21
An authorized Volvo workshop is recommended.

INDEX
625
recalls and registration 65
top tether anchors 72
Child safety 63
Child safety locks 250
City Safety 324, 325, 327, 328, 333, 335
City Safety in crossing traffic 330, 331City Safety when evasive maneuver preven- ted 332
Cleaning 592, 594, 595 automatic car wash 598
car wash 595, 596, 598, 599, 600, 601
center display 590
Seat belts 592
textile upholstery 590, 592, 593
upholstery 590, 592, 593, 594, 595
wheels 601
Cleaning wheels 601
Cleaning wiper blades 599
Clean Zone 199
Clean Zone Interior Package 200
Climate 196 auto-regulation 215
blower control 220, 221
perceived temperature 197
Sensors 197
temperature control 222, 223, 224
voice control 198
zones 196
Climate controls 208 center display 208
rear seat 208
Climate system 196, 208 Refrigerant 620
repairs 558
Clock, setting 90
Collision 42, 47, 52, 61 Collision warner detection of pedestrians 328
radar sensor 315
Collision warning 324, 336
Color code, paintwork 603
Color codes 603
Compass 441 calibration 441
Condensation in headlights 596, 598, 599, 600
Connecting vehicle to Internet No connection or poor connection 492
via a mobile device (WiFi) 489
via mobile device (Bluetooth) 489
via vehicle's modem 490
Connect phone 479
Contact information 26Convertible seats 69
coolant 619
Coolant, filling 562Cooling system overheating 431
Cornering illumination 158
Corner Traction Control 264
Corrosion protection 601
Crash, see Collision 42
Crash event data 33
Cross Traffic Alert – CTA 342, 343, 344, 345
Cruise control 275, 276 manage speed 276, 277
temporary deactivation 278, 279
turn off 279
CTA – Cross Traffic Alert 342, 343, 344, 345
Curb weight 615
CZIP (Clean Zone Interior Package) 200
D
Data recording 33 transferring between vehicle and work-
shop 550
Data sharing 494

INDEX
626Daytime running lights 152 Decals
location of 610
Defrosting 217
Detection of cyclist 328
Dimensions 613
Dipstick, electronic 560
Direction of rotation 510
Disengaging the shiftlock 411
Display lighting 162
Distance Alert 280, 281, 282 limitations 283
DivX ®
470
Door mirrors 171, 173 compass 441
dimming 172
outer 171, 173
power folding 173
resetting 173
Driveline transmission 407
Drive mode 413 changing 415
Driver Alert Control 351 operation 352, 353
Driver Alert Control limitations 353
Driver performance 88, 89
Driver profile 135 edit 137
select 136
Driver support system 262 Driving cooling system 431
Driving economy 424
Driving through standing water 426 driving with a trailer towball load 616
towing capacity 616
E
ECO climate 415
ECO mode 415activate with function button 417
Economical driving 415, 424
Electrical outlet 539 use 540
Electrical system 573
Electric parking brake 401
Electronic immobilizer 242
emergency brake lights 159
Emission inspection readiness 548
Engine overheating 431
start 394
Start/Stop 418
turn off 396
Engine compartment coolant 562
engine oil 559
overview 559
Engine drag control 264
Engine oil 559 filling 560
filter 559
grade and volume 618
Engine shutdown 396
Engine specifications 617 Engine temperature high 431
Environment 27Error messages Adaptive Cruise Control 298
see Messages and symbols 298, 313
Error messages in BLIS 341 Ethanol content max. 10% by volume 428
Exterior dimensions 613