2020 VOLVO S90 warning lights

DRIVER SUPPORT
* Option/accessory.
356
Park Assist front, rear and sides *
Park Assist behaves differently depending on which part of the vehicle is approaching anobstacle.
Front camera
The warning signal has a continuous tone when the obstacle is less than approx. 30 cm (1 ft) from thevehicle.
The Park Assist system's front sensors are automatically activated when the engine isstarted. They are active at speedsbelow 10 km/h (6 mph). The distance monitored extends approx. 80 cm (2.5 ft) in front of the vehicle.
NOTE
The Park Assist system is deactivated when the parking brake is used or when P
is selected on vehicles with automatictransmission.
CAUTION
When installing auxiliary lights: Make sure these do not obscure the sensors – theauxiliary lights could be perceived as anobstacle.
Back
The warning signal has a continuous tone when the obstacle is less than approx. 30 cm (1 ft) from thevehicle.
The rear sensors will be activated if the vehicle begins rolling backward or if reverse gear isengaged. The distance monitored extends approx. 1.5 meters (5 ft) behind the vehicle.
Side sensors
The warning signal will begin pulsating rapidly when the obstacle is less than approx. 25 cm (0.8 ft) fromthe vehicle.
Park Assist's side sensors are automatically activated when the engine is started. They areactive at speeds below 10 km/h (6 mph). The distance monitored is approx. 25 cm (0.8 ft) out from the sides. The detection area of the side sensors increa- ses significantly, however, when the steering angle of the front wheel increases and depending on the position of the steeringwheel, obstacles up to approx. 90 cm (3 ft)

STARTING AND DRIVING
* Option/accessory.381
Ignition modes The vehicle's ignition can be put in various modes (levels) to make different functionsavailable.
To enable the use of a limited number of func- tions when the engine is not running, the igni-tion can be put in one of three different levels:0, I and II. These levels are referred to as "igni-
tion modes" in the Owner's Manual. The following table shows which functions are available in each ignition mode:
Mode Functions
0 The odometer, clock and tem- perature gauge are illumi- nated A
.
The power
* seats can be
adjusted.
The power windows can be used.
The center display is activated and can be used A
.
The infotainment system canbe used A
.
In this mode, the functions are available for a limited time andthen switch off automatically.
I The panoramic roof, powerwindows, 12-volt electricalsocket in the passenger com-partment, Bluetooth, naviga-tion, phone, blower and wind-shield wipers can be used.
The power seats can beadjusted.
The 12-volt electrical socket
* in
the trunk can be used.
Electrical current will be takenfrom the battery in this ignitionmode.Mode Functions
II The headlights illuminate.
Warning/indicator lights illumi- nate for 5 seconds.
A number of other systems areactivated. However, seat andrear window heating can onlybe activated when the engineis running.
This ignition mode uses a lot ofcurrent from the battery andshould be avoided wheneverpossible!
A Also activated when the door is opened.
Related information
Starting the vehicle (p. 378)
Adjusting the steering wheel (p. 193)
Jump starting using another battery (p. 420)
Selecting ignition mode (p. 382)

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STARTING AND DRIVING
384
WARNING
If the warning symbols for both brake fault and ABS fault are lit simultaneously, theremay be a fault in the brake system.
If the brake fluid reservoir level is nor- mal when this occurs, drive carefully tothe nearest workshop to have thebrake system checked - an authorizedVolvo workshop is recommended.
If the brake fluid has fallen below theMIN
level in the brake fluid reservoir,
the vehicle should not be driven untilthe brake fluid has been filled. The rea-son for the brake fluid loss must bechecked.
Related information
Brake Assist System (p. 384)
Auto-hold brakes (p. 389)
Hill Start Assist (p. 390)
Braking on wet roads (p. 384)
Braking on salted roads (p. 385)
Maintenance of the brake system(p. 385)
Brake lights (p. 157)
Brake Assist System The brake enhancing system, (BAS 3
), helps
increase braking force and can thereby reduce braking distance.
The system monitors the driver's braking hab- its and increases braking force when neces-sary. Braking force can be increased up to thepoint at which the ABS intervenes. The func-tion is deactivated when pressure on the brakepedal is decreased.
NOTE
When BAS is activated, the brake pedal will go down slightly more than usual.Press (hold) down the brake pedal as longas necessary. When the brake pedal is released, all brak- ing ceases.
Related information
Brakes (p. 383)
Braking on wet roads
Prolonged driving in heavy rain without brak- ing may cause braking effect to be slightlydelayed the first time the brakes are applied.
This may also occur after washing the vehicle. It will then be necessary to apply greater pres-sure to the brake pedal. You should thereforemaintain a greater distance to the vehicleahead. Firmly apply the brakes after washing the vehicle or driving on wet roads. This helpswarm up the brake discs, enabling them to drymore quickly and protecting them against cor-rosion. Consider the current traffic situationwhen braking.
Related information
Brakes (p. 383)
Braking on salted roads (p. 385)
3
Brake Assist System

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STARTING AND DRIVING
* Option/accessory.
412
WARNING
Never turn off the engine while the vehicle is moving, e.g. when driving downhill. Thisdeactivates certain important systemssuch as power steering and brakes.
Other factors that decrease fuel consumption
Dirty air cleaner.
Dirty engine oil and clogged oil filter.
Incorrect front-end alignment.
Incorrect wheel alignment.
Some of the above items and others are checked as part of Volvo's standard mainte-nance schedule.
Related information
Drive-E
‒ purer driving pleasure (p. 28)
Eco drive mode (p. 401)
Checking tire pressure (p. 507)
Preparing for a long trip
It is important to have the vehicle's systems and equipment checked carefully before driv-ing long distances.
Check that
the engine is running properly and that fuel consumption is normal
there are no leaks (fuel, oil or other fluid)
the brake pedal is functioning properly
all lights are working
‒ adjust the head-
light height if the vehicle is carrying aheavy load
tire tread depth and air pressure are atcorrect levels. Change to snow tires whendriving in areas where there is a risk ofsnowy or icy roads
the start battery is sufficiently charged
the wiper blades are in good condition
Related information
Checking tire pressure (p. 507)
Filling washer fluid (p. 607)
Winter driving (p. 412)
Economical driving (p. 411)
Vehicle modem settings (p. 483)
Loading recommendations (p. 538)
Pilot Assist
* (p. 285)
Tire sealing system (p. 523)
Winter driving
It is important to check the vehicle before driving in cold/snowy conditions to makesure it can be driven safely.
Before the cold season arrives: Make sure the engine coolant contains 50% antifreeze. This mixture helps pro-tect the engine from frost erosion down toapprox. –35 °C (–31 °F). Do not mix dif-ferent types of antifreeze as this couldpose a health risk.
Keep the fuel tank well filled to preventcondensation from forming.
Check the viscosity of the engine oil. Oilwith low viscosity (thinner oil) improvescold-weather starting and reduces fuelconsumption when driving with a coldengine.
CAUTION
Low-viscosity oil should not be used with hard driving or in hot weather.
Check the condition and charge level of the start battery. Cold weather placesgreater demands on the start battery andreduces its capacity.
Use washer fluid containing antifreeze tohelp prevent ice from forming in thewasher fluid reservoir.

STARTING AND DRIVING
418
Emission controls
Three-way catalytic converter
Keep your engine properly tuned. Certain engine malfunctions, particularly involvingthe electrical, fuel or distributor ignitionsystems, may cause unusually high three-way catalytic converter temperatures. Donot continue to operate your vehicle if youdetect engine misfire, noticeable loss ofpower or other unusual operating condi-tions, such as engine overheating or back-firing. A properly tuned engine will helpavoid malfunctions that could damage thethree-way catalytic converter.
Do not park your vehicle over combustiblematerials, such as grass or leaves, whichcan come into contact with the hotexhaust system and cause such materialsto ignite under certain wind and weatherconditions.
Excessive starter cranking (in excess ofone minute), or an intermittently firing orflooded engine can cause three-way cata-lytic converter or exhaust system over-heating.
Remember that tampering or unauthor-ized modifications to the engine, theEngine Control Module, or the vehicle maybe illegal and can cause three-way cata-lytic converter or exhaust system over-heating. This includes: altering fuel injec- tion settings or components, alteringemission system components or locationor removing components, and/or repeateduse of leaded fuel.
NOTE
Unleaded fuel is required for vehicles with three-way catalytic converters.
Heated oxygen sensorsThe heated oxygen sensors monitor the oxy- gen content of the exhaust gases. Readings are fed into a control module that continuouslymonitors engine functions and controls fuelinjection. The ratio of fuel to air into the engineis continuously adjusted for efficient combus-tion to help reduce harmful emissions.
Related information

Octane rating (p. 416)
Fuel (p. 415)
Overheating of engine and transmission
In certain driving conditions, such as driving in mountainous areas or hot weather, there isa risk of the engine or transmission overheat-ing, especially when carrying heavy loads.
Engine power may be temporarily limited.
Remove any auxiliary lights mounted in front of the grille when driving in hotweather.
If the temperature in the engine's coolingsystem becomes too high, a warning sym-bol will 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 orEngine coolant Level low, turn off
engine is displayed, stop the vehicle and
turn off the engine.
If the transmission begins to overheat, an alternative gear shifting program will beselected. An integrated protective functionwill also be activated, the warning symbolwill illuminate and the message
Transmission warm Reduce speed to
lower temperature or Transmission hot
Stop safely, wait for cooling will be dis-

MAINTENANCE AND SERVICE
* Option/accessory.
558
Replacing bulbs
Bulb types vary depending on model and equipment level. If a light bulb 15
breaks, it can
be replaced by following the procedure shown in the Owner's Manual. If you are experiencing problems with any lights other than light bulbs, contact a work- shop 16
.
If there is a problem with an LED 17
light, the
entire lamp unit will normally need to be replaced.
NOTE
For information on lights not mentioned in the Owner's Manual, contact a Volvodealer or a certified Volvo service techni-cian.
WARNING
The vehicle electrical system must be in ignition mode 0 when bulbs are replaced.
CAUTION
Never touch the bulb glass with your bare fingers. Grease and oils from your fingersvaporize in the heat and will leave adeposit on the reflector, which may dam-age it.
NOTE
If the error message persists after the defective bulb has been replaced, we rec-ommend a visit to an authorized Volvoworkshop.
NOTE
Exterior lighting such as headlights and taillights may develop temporary conden-sation on the inside of the lens. This is nor-mal. All exterior lighting is designed toresist this. Condensation is normally ven-ted out of the lamp housing once the lighthas been lit for some period of time.
NOTE
Bulbs for active curve lighting * contain
traces of mercury and should therefore always be submitted to a certified Volvoservice technician.
Related information
Location of exterior lights (p. 559)
Removing the plastic cover to replace bulbs (p. 559)
Replacing the low beam headlight bulbs(p. 560)
Replacing the high beam headlight bulbs(p. 561)
Replacing daytime running lights/frontparking light bulbs (p. 562)
Replacing front turn signal bulbs(p. 563)
Replacing the rear fog light bulb (p. 563)
Bulb specifications (p. 566)
15
Some vehicles do not have any light bulbs.
16 An authorized Volvo workshop is recommended.
17 LED (Light Emitting Diode)

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MAINTENANCE AND SERVICE
598
Wash using a sponge, car washing deter- gent and plenty of lukewarm water.
Clean the wiper blades with lukewarmsoap solution or car washing detergent.
Dry the vehicle using a clean, soft chamoisor a squeegee. Try not to let drops ofwater dry in strong sunlight. This couldcause water drying stains that may needto be polished out.
In areas with heavy industrial emissions,more frequent washing of the vehicle'sexterior is recommended.
Tar spots from asphalt may remain evenafter washing. Use a tar remover toremove these spots.
WARNING
Always entrust engine washing to a work- shop. If the engine is hot, there is a risk offire.
CAUTION
Dirty headlights do not work as well. Clean them regularly, e.g. when refueling. Do not use corrosive cleaners. Use water and a non-abrasive sponge.
NOTE
Exterior lighting such as headlights and taillights may develop temporary conden-sation on the inside of the lens. This is nor-mal. All exterior lighting is designed toresist this. Condensation is normally ven-ted out of the lamp housing once the lighthas been lit for some period of time.
CAUTION
Make sure that the panoramic roof and sun shade are closed before washingthe vehicle.
Never use abrasive polishing agents onthe panoramic roof.
Never use wax on the rubber sealsaround the panoramic roof.
CAUTION
Remember to remove dirt from the drain holes in the doors and sills after washingthe vehicle.
Related information
Cleaning the exterior (p. 596)
Polishing and waxing (p. 596)
Automatic car washes (p. 599)
High-pressure washing (p. 600)
Cleaning the wiper blades (p. 600)
Cleaning exterior plastic, rubber and trim components (p. 601)
Cleaning rims (p. 602)
Corrosion protection (p. 602)
Settings for automatically activating theparking brake (p. 387)

INDEX
623
1, 2, 3 ...
4WD 399
A
ABSanti-lock brakes 383
AC (Air conditioning) 223
Accessories and extra equipment 35 installation 36
Accessory installation warning 36, 37
Active Bending Lights 154
Adapting driving characteristics 399
Adaptive Cruise Control 276 activating 278
auto-brake 298
change cruise control functionality 282
limitations 281
manage speed 296
passing 302
set time interval 297
standby mode 280
switching target vehicles 295
Symbols and messages 283
troubleshooting 281
turn off 279
WARNING 294
Adjusting the steering wheel 193
Airbag 52
activation/deactivation 56
driver's side 53
passenger side 53, 56
Air bag, see Airbag 52
Air conditioning 223Air conditioning, fluid volume and grade 619
Air distribution 201 air vents 201, 203
changing 202
defrosting 215
recirculation 214
table showing options 204
Air quality 199, 200 allergy and asthma 200
passenger compartment filter 201
Air recirculation 214
Alarm 261 deactivating 262
Allergy and asthma-inducing sub-
stances 200
All Wheel Drive, AWD 399
All Wheel Drive (AWD) 399
All Wheel Drive (four-wheel drive) 399
Android Auto 468, 469, 470Antenna location 251
Apple CarPlay 464, 465, 467
Approach lighting 158
Apps 436Armrest folding down the rear seats 537
Assistance at risk of collision 349 activating/deactivating 350
at risk of run-off 350
during collision risks from behind 352during collision risks from oncoming
traffic 351
limitations 353
Symbols and messages 354
Audio and media 434 Audio system HD digital radio 445 SiriusXM ®
Satellite radio 446, 447,
449
Auto-climate 214
Auto hold 389
Auto-hold brakes 389 activating/deactivating 390
after collision 391
driver support 266
Automatic car wash 599
INDEX