2019 VOLVO S90 TWIN ENGINE sensor

STARTING AND DRIVING
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Brakes
The brake pedal is used to apply the vehicle'sregular brakes, which are part of the brake sys-tem.
The vehicle is equipped with two brake circuits. Ifone brake circuit is damaged, the brake pedal willgo down further when depressed. More pressurewill then be required from the driver for normalbraking effect.

WARNING
The power brakes only work when the electricmotor or combustion engine is running.
If the brake pedal is used when the engine isswitched off, greater pressure must be applied tobrake the vehicle.
In very hilly areas or when driving with a heavyload, gear position B can be used to augment thebrakes with engine braking.

Anti-lock brakes
The vehicle is equipped with an Anti-lock BrakingSystem (ABS), which helps prevent the wheelsfrom locking and helps maintain steering controlwhen braking. Vibrations may be felt from thebrake pedal when ABS is operating, which is nor-mal.
After the vehicle is started, a brief test of theABS system is automatically performed when the
driver releases the brake pedal. An additionalautomatic test of the system may be performedwhen the vehicle is traveling at a low speed. Dur-ing the test, the brake pedal may feel as though itis pulsating.
Light braking charges the hybrid battery
When the brakes are applied lightly, the electricmotor braking function is used. This converts thevehicle's kinetic energy into electrical energy,which is used to charge the hybrid battery. Whenthe battery is being charged with the electricmotor braking function, this will be indicated inthe instrument panel.
When the battery is being charged with the electricmotor braking function, this will be indicated in theinstrument panel.
This function is active at speeds in the range of150-5 km/h (93-3 mph). When braking atspeeds outside of this range, or during harderbraking, the hydraulic braking system is used to
augment braking. This is indicated in the instru-ment panel with the pointer down in the red area.
Symbols in the instrument panel
Symbol Meaning
A
B
Check the brake fluid level. If thelevel is low, fill brake fluid andcheck to determine the reason forthe loss of brake fluid.
A
B
Fault in pedal sensor.

STARTING AND DRIVING
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461
4.Avoid overfilling the tank. Do not press thehandle on the filler nozzle again after it hasinitially stopped pumping.
>The fuel tank is now filled.

NOTE
An over-full tank may overflow in hot weather.

CAUTION
Avoid spilling gasoline during refueling. Inaddition to causing damage to the environ-ment, gasolines containing alcohol can causedamage to painted surfaces, which may notbe covered under the New Vehicle LimitedWarranty.

Refueling from a fuel container
When filling from a fuel container, use the funnelprovided in a foam block under the floor hatch inthe cargo compartment.
1. Open the fuel filler door.
2. Insert the funnel into the fuel filler pipe'sopening. There are two flaps just inside thefuel filler pipe and the tube section of thefunnel must push both of these flaps openbefore fuel can be added.
WARNING
California Proposition 65
Operating, servicing and maintaining a pas-senger vehicle can expose you to chemicalsincluding engine exhaust, carbon monoxide,phthalates, and lead, which are known to theState of California to cause cancer and birthdefects or other reproductive harm. To mini-mize exposure, avoid breathing exhaust, donot idle the engine except as necessary, serv-ice your vehicle in a well ventilated area andwear gloves or wash your hands frequentlywhen servicing your vehicle. For more infor-mation go to www.P65Warnings.ca.gov/passenger-vehicle.

Related information
Opening/closing the fuel filler door (p. 459)
Fuel (p. 461)
Fuel
Volvo recommends the use of detergent gaso-line to control engine deposits.
Deposit control gasoline (gasoline with
detergent additives)
Detergent gasoline is effective in keeping injec-tors and intake valves clean. Consistent use ofdeposit control gasolines will help ensure gooddriveability and fuel economy. If you are not surewhether the gasoline contains deposit controladditives, check with the service station operator.

NOTE
Volvo recommends not using external fuelinjector cleaning systems, e.g. do not adddetergent additives to gasoline before or afterrefueling.

Unleaded fuel
All Volvo vehicles have a three-way catalytic con-verter and must only use unleaded gasoline. USand Canadian regulations require that pumpsdelivering unleaded gasoline are labeled"UNLEADED". Only the nozzles of these pumpswill fit in your vehicle's fuel filler inlet. It is unlaw-ful to dispense leaded fuel into a vehicle labeled"unleaded gasoline only". Leaded gasoline dam-ages the three-way catalytic converter and theheated oxygen sensor system. Repeated use ofleaded gasoline will lessen the effectiveness of

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STARTING AND DRIVING
464

WARNING
Carbon monoxide is a poisonous, colorless,and odorless gas. It is present in all exhaustgases. If you ever smell exhaust fumes insidethe vehicle, make sure the passenger com-partment is ventilated, and immediately returnthe vehicle to a trained and qualified Volvoservice technician for correction.

Demanding driving
In demanding driving conditions, such as whentowing a trailer or driving in hot weather or forprolonged periods at high altitudes, it may be a
good idea to switch to a higher-octane fuel (AKI5
91 or higher) or to switch to another brand ofgasoline in order to fully utilize the vehicle'sengine capacity and optimize traction.

Related information
Fuel (p. 461)
Emission controls (p. 464)
Emission controls
Three-way catalytic converter
Keep your engine properly tuned. Certainengine malfunctions, particularly involving theelectrical, fuel or distributor ignition systems,may cause unusually high three-way catalyticconverter temperatures. Do not continue tooperate your vehicle if you detect enginemisfire, noticeable loss of power or otherunusual operating conditions, such as engineoverheating or backfiring. A properly tunedengine will help avoid malfunctions thatcould damage the three-way catalytic con-verter.
Do not park your vehicle over combustiblematerials, such as grass or leaves, which cancome into contact with the hot exhaust sys-tem and cause such materials to ignite undercertain wind and weather conditions.
Excessive starter cranking (in excess of oneminute), or an intermittently firing or floodedengine can cause three-way catalytic con-verter or exhaust system overheating.
Remember that tampering or unauthorizedmodifications to the engine, the Engine Con-trol Module, or the vehicle may be illegal andcan cause three-way catalytic converter orexhaust system overheating. This includes:altering fuel injection settings or compo-nents, altering emission system components
or location or removing components, and/orrepeated use of leaded fuel.

NOTE
Unleaded fuel is required for vehicles withthree-way catalytic converters.

Heated oxygen sensors
The heated oxygen sensors monitor the oxygencontent of the exhaust gases. Readings are fedinto a control module that continuously monitorsengine functions and controls fuel injection. Theratio of fuel to air into the engine is continuouslyadjusted for efficient combustion to help reduceharmful emissions.

Related information
Octane rating (p. 462)
Fuel (p. 461)
5AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/2

LOADING, STORAGE AND PASSENGER COMPARTMENT
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* Option/accessory.575
Tunnel console
The tunnel console is located between the frontseats.
Storage compartment with cover*. The covercan be opened/closed by pressing the han-dle.
Storage compartment with cup holder and12 V socket.
Storage compartment and USB port underthe armrest.
Climate control panel for the rear seats* orstorage compartment.
Electrical socket and USB port1. The covercan be opened/closed by pressing the han-dle.

WARNING
Store loose objects, such as cell phone, cam-era, remote control for extra equipment, etc.,in the glove compartment or another compart-ment. Otherwise, these could injure people inthe vehicle in the event of hard braking or acollision.

NOTE
One of the sensors for the alarm* is locatedunder the cup holder in the center console.Avoid placing coins, keys and other metalobjects in the cup holder as this could triggerthe alarm.

CAUTION
Keep in mind that glossy surfaces can beeasily scratched by e.g. metal objects. Do notplace keys, phones or similar items on sensi-tive surfaces.

Related information
Passenger compartment interior (p. 574)
Electrical outlets (p. 575)
Climate system controls (p. 207)
Electrical outlets
There are two 12-volt electrical sockets and one12-volt electrical socket* in the trunk.
If a problem occurs with an electrical socket,contact a workshop - an authorized Volvo work-shop is recommended.
12 V outlets
12 V outlet in the tunnel console, front seat.
The 12 V outlets can be used for devicesintended for this such as MP3 players, coolersand cellular phones.
1The USB port can be used to charge e.g. a cellular phone or tablet. The USB port cannot be used to play media through the vehicle's sound system.

MAINTENANCE AND SERVICE
597
Engine oil
For the recommended service intervals and war-ranties to be applied, an approved engine oilmust be used.
Volvo recommends:
If the engine oil is not checked regularly and thelevel becomes low, this could cause seriousengine damage.

CAUTION
To satisfy the requirements for the engine'sservice intervals, all engines are factory-filledwith a specially adapted synthetic engine oil.Great care has been put into the choice of oil,with consideration given to service life, starta-bility, fuel consumption and environmentalimpact.
For the recommended service intervals toapply, an approved engine oil must be used.Only use the prescribed oil grade to top off orchange the oil. Otherwise, there is a risk ofthe vehicle's service life, startability, fuel con-sumption and environmental impact beingaffected.
Failure to use engine oil of the prescribedgrade and viscosity could cause damage toengine-related components. Volvo Car Corpo-ration disclaims warranty liability for such typeof damage.
Volvo recommends entrusting oil changes toan authorized Volvo workshop.
Volvo uses different systems to warn if the oillevel is too low/high or the oil pressure is low. Onengine variants with an oil pressure sensor, a
warning symbol is displayed in the instrument
panel when oil pressure is low . On engine
variants with an oil level sensor, the warn-ing symbol in the instrument panel and displaymessages are used to alert the driver. Someengine variants have both systems. Contact aVolvo retailer for more information.
Change the engine oil and oil filter according tothe schedule specified in the Warranty and Main-tenance Records Information booklet. Oils of ahigher grade than that specified may be used. Ifthe vehicle is driven in adverse conditions, Volvorecommends using an oil with a higher gradethan that specified.

Related information
Checking and filling engine oil (p. 598)
Engine oil specifications (p. 646)

MAINTENANCE AND SERVICE
598
Checking and filling engine oil
The engine oil level is monitored by an electronicoil level sensor.
Filler pipe13.
It may be necessary to top up engine oil betweenregularly scheduled services.
No action is necessary with regard to engine oillevel until a message appears in the instrumentpanel.

WARNING
If this symbol is shown togetherwith the message Engine oil levelService required, visit a workshop– an authorized Volvo workshop isrecommended. The oil level may be too high.
CAUTION
If this symbol is shown togetherwith a message about low oil level,for example Engine oil level lowRefill 1 liter, fill only with the indi-cated volume, e.g. 1 liter (1 quart).

WARNING
Do not spill oil on the hot exhaust pipes asthis could cause a fire.

Viewing oil level in the center display
The oil level can be viewed using the electronicoil level gauge in the center display once thevehicle has been started. The oil level should bechecked regularly.
1.Open the Car Status app from App view inthe center display.
2.Tap Status to display the oil level.
Oil level graphic in the center display.

NOTE
The system cannot directly detect changeswhen the oil is filled or drained. The vehiclemust have been driven approximately 30 km(20 miles) and have been stationary5 minutes on a level surface and with theengine off before the correct oil level will bedisplayed.
13Engines with an electronic oil level sensor do not have a dipstick.

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MAINTENANCE AND SERVICE
* Option/accessory.610
FunctionAmpere
12 V outlet in trunk/cargocompartment*
USB ports for iPad holders
15
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Heated windshield*, left sideShunt
Heated windshield*, left side40
Headlight washers*25
Windshield washer25
––
Horn20
Alarm siren*5
Brake system control module(valves, parking brake)40
Wipers30
––
FunctionAmpere
Heated windshield*, right side40
––
Brake system control module(ABS pump)40
––
Heated windshield*, right sideShunt
Fed when ignition is on:Engine control module; trans-mission components, electricalpower steering, central electri-cal module
5
Exterior vehicle sound (certainmarkets)5
Right-side headlight7.5
Right-side headlight, some
models with LEDC15
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Airbags5
FunctionAmpere
Left-side headlight7.5
Left-side headlight, some
models with LEDC15
Accelerator pedal sensor 5
Transmission control module;gear selector control module15
Engine control module5
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Engine control module; actua-tor; throttle unit; turbo-chargervalve
20
Solenoids; valve; engine cool-ing system thermostat10
Vacuum regulators; valve 7.5
Spoiler shutter control module;radiator shutter control mod-ule
5
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MAINTENANCE AND SERVICE
611
FunctionAmpere
Heated oxygen sensor, front;heated oxygen sensor, rear15
Oil pump solenoid; A/C mag-netic coupling; heated oxygensensor (center)
15
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Engine control module20
Ignition coils; spark plugs 15
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Transmission oil pump controlmodule30
Vacuum pump control module 40
Transmission actuator25
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ANot ExcellenceBExcellenceCLED (Light Emitting Diode)

Related information
Fuses and fuseboxes (p. 606)
Replacing fuses (p. 607)