2020 VOLVO S90 TWIN ENGINE warning lights

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DRIVER SUPPORT
* Option/accessory.
354 The function is active at speeds between
60-140 km/h (37-87 mph) on roads with clearly visible traffic lane markings/lines. If your vehicle is starting to veer from your own lane and a vehicle is approaching fromthe opposite direction, this function can helpthe driver steer the vehicle back into its ownlane. However, the function will not provide steer-
ing assistance if the turn signal is used. The function will also not be activated if it detectsthat the driver is actively operating the vehicle.
Related information
Steering assistance at risk of collision(p. 351)
Collision risk warning from driver support(p. 296)
Steering assistance during collision riskslimitations (p. 355)
Steering assistance during collision risks from behind
*
Steering assistance has several sub-func- tions. If you become distracted and do notnotice your vehicle starting to veer out of thelane while another vehicle is approachingfrom behind or is in your vehicle's blind spot,Steering assistance during collision risksfrom behind can help provide assistance.
The function provides assistance by steering your vehicle back into your own lane.
Another vehicle in blind spot zone
Own vehicle
If your vehicle is beginning to veer out of your lane while another vehicle is in your blind spotor another vehicle is rapidly approaching in the next lane, this function can help the driversteer the vehicle back into its own lane. Even if the driver intentionally changes lanes using a turn signal without noticing anothervehicle approaching, the function can provideassistance. The function is active at speeds between 60-140 km/h (37-87 mph) on roads withclearly visible traffic lane markings/lines. The lights in the door mirrors will flash while steering assistance is being provided, whether or not the BLIS
92
function is activated.
Related information
Steering assistance at risk of collision (p. 351)
BLIS
* (p. 329)
Steering assistance during collision riskslimitations (p. 355)
92
Blind Spot Information

DRIVER SUPPORT
* Option/accessory.
358
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)

HYBRID INFORMATION
389
LED indicator light's colorMeaning
White Courtesy light. Yellow Wait modeA
– waiting for
charging to start.
Flashing green Charging is in progress B
.
Green Charging completed C
.
Red Malfunction.
A E.g. after a door has been opened or if the charging cable handle is not locked in place.
B The more slowly the light flashes, the closer the battery is tobeing fully charged.
C The light will go out after a short time.
Related information
Charging the hybrid battery (p. 381)
Charging status in the instrument panel (p. 390)
Charging status in the charging cable'scharging module (p. 389)
Stopping hybrid battery charging (p. 392)
Charging status in the charging cable's charging module
The red and blue lights in the charging mod- ule indicate the status of ongoing and com-pleted charging.
Charge module: 1. Red warning light, 2. Blue status indicator
When the charge module is initially plugged into a wall outlet, the red warning light willflash once to indicate that a startup safetycheck has been performed. When the safetycheck has been completed, the blue statusindicator will glow steadily and the red warn-ing light will be off. The charger is now readyto be used. If the red warning light continuesto flash or glows steadily, a fault has beendetected and the charger will not deliverpower to the vehicle. Contact a Volvo retaileror a certified Volvo service technician. When the charging cable is connected to thevehicle's charging socket, the blue light willflash once. Charging cable connected to the vehicle's charging socket:
Indicator light's color
Meaning
Flashing blue Charging is in progress. Thelight flashes about onceevery other second.
Solid blue Charging completed. This will also be indicated in theinstrument panel.
Related information
Charging the hybrid battery (p. 381)
Charging status in the vehicle's charging socket (p. 388)
Charging status in the instrument panel(p. 390)
Stopping hybrid battery charging (p. 392)

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STARTING AND DRIVING
402
Mode FunctionsII 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. 398)
Adjusting the steering wheel (p. 195)
Jump starting using another battery (p. 441)
Selecting ignition mode (p. 402)
Selecting ignition mode
The vehicle's ignition can be put in various modes (levels) to make different functionsavailable.
Selecting an ignition mode
Start knob in the tunnel console.
Ignition mode 0
– Unlock the vehicle and
keep the remote key in the passenger compartment.
NOTE
To set level I or II without engine start –
do not depress the brake pedal (or clutch
pedal for vehicles with manual transmis- sion) when selecting this ignition mode.
Ignition mode I
– Turn the start knob
clockwise and release it. The control will automatically return to the original posi- tion.
Ignition mode II
– Turn the start knob
clockwise and hold it there forapprox. 5 seconds. Release the knob,which will automatically return to its origi-nal position.
Back to ignition mode 0
– To return to
ignition mode 0 from modes I and II, turn
the start knob clockwise and release it.The control will automatically return to theoriginal position.
Related information
Starting the vehicle (p. 398)
Switching off the vehicle (p. 400)
Ignition modes (p. 401)
Adjusting the steering wheel (p. 195)
Jump starting using another battery(p. 441)

STARTING AND DRIVING
405
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. 405)
Auto-hold brakes (p. 410)
Hill Start Assist (p. 411)
Braking on wet roads (p. 405)
Braking on salted roads (p. 406)
Maintenance of the brake system(p. 406)
Brake lights (p. 158)
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.
Related information
Brakes (p. 403)
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. 403)
Braking on salted roads (p. 406)
3
Brake Assist System

STARTING AND DRIVING
}}
439
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. 437)
Fuel (p. 436)
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-

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STARTING AND DRIVING
44211. Start your vehicle's engine. If the engine
does not start, allow an additional 10 minutes of charging time and then try tostart the engine again.
NOTE
When the engine is started under normal conditions, the vehicle's electrical drivemotor is prioritized – the gasoline engineremains off. This means that after the startknob has been turned clockwise, the elec-tric motor has "started" and the vehicle isready to be driven. Start of the electricmotor is indicated by the indicator lights onthe instrument panel going out and its pre-selected theme illuminating.
CAUTION
Do not touch the connections between the cable and the vehicle during the startattempt. Risk of sparking.
12. Remove the jumper cables in the reverseorder ‒ first the black cables and then the
red cables. Make sure that none of the clamps of the black jumper cables come into contactwith either vehicle's positive (+) jump startterminals or either of the red jumpercable's connected clamps.
WARNING
PROPOSITION 65 WARNING! Battery
posts, terminals, and related accessories contain lead and lead compounds, chemi-cals known to the state of California tocause cancer and reproductive harm. Washhands after handling.
WARNING
Batteries generate hydrogen gas, which is flammable and explosive.
Do not connect the jumper cable toany part of the fuel system or to anymoving parts. Avoid touching hotmanifolds.
Battery fluid contains sulfuric acid. Donot allow battery fluid to contact eyes,skin, fabrics or painted surfaces.
If contact occurs, flush the affectedarea immediately with water. Obtainmedical help immediately if eyes areaffected.
Never expose the battery to open flameor electric spark. Do not smoke nearthe battery. Failure to follow theinstructions for jump starting can leadto injury.
NOTE
The vehicle cannot be started if the hybrid battery is discharged.
Related information

Starting the vehicle (p. 398)
Ignition modes (p. 401)
Adjusting the steering wheel (p. 195)
Selecting ignition mode (p. 402)

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MAINTENANCE AND SERVICE
612
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. 610)
Polishing and waxing (p. 610)
Automatic car washes (p. 613)
High-pressure washing (p. 614)
Cleaning the wiper blades (p. 614)
Cleaning exterior plastic, rubber and trim components (p. 615)
Cleaning rims (p. 616)
Corrosion protection (p. 616)
Settings for automatically activating theparking brake (p. 408)