service indicator VOLVO S90 TWIN ENGINE 2020 Owners Manual

SAFETY
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57
Occupant weight sensor
The Occupant Weight Sensor (OWS) is designed to meet the regulatory require-ments of Federal Motor Vehicle SafetyStandard (FMVSS) 208 and is designed todisable (will not inflate) the passenger's sidefront airbag under certain conditions.
Occupant Weight Sensor (OWS) indicator light
Disabling the passenger's side front airbag
Volvo recommends that ALL occupants (adults and children) shorter than 140 cm(4 feet 7 inches) be seated in the back seat ofany vehicle with a front passenger side airbagand be properly restrained for their size andweight. The OWS works with sensors that are part of the front passenger's seat and seat belt. Thesensors are designed to detect the presence of a properly seated occupant and determine ifthe passenger's side front airbag should beenabled (may inflate) or disabled (will notinflate). The OWS will disable (will not inflate) the pas- senger's side front airbag when:
the front passenger's seat is unoccupied,or has small/medium objects in the frontseat,
the system determines that an infant ispresent in a rear-facing infant seat that isinstalled according to the manufacturer'sinstructions,
the system determines that a small child ispresent in a forward-facing child restraintthat is installed according to the manufac-turer's instructions,
the system determines that a small child ispresent in a booster seat,
a front passenger takes his/her weight offof the seat for a period of time,
a child or a small person occupies thefront passenger's seat.
The OWS uses a PASSENGER AIRBAG OFFindicator lamp which will illuminate and stayon to remind you that the passenger's sidefront airbag is disabled. The PASSENGERAIRBAG OFF indicator lamp is located in theoverhead console, near the base of the rear-view mirror.
NOTE
When the ignition is switched on, the OWS indicator light will illuminate for sev-eral seconds while the system performs aself-diagnostic test.
However, if a fault is detected in the system:
The OWS indicator light will stay on.
The SRS warning light will come on and stay on and a text message will be dis-played.
WARNING
If a fault in the system is detected and indi- cated as described, be aware that the pas-senger's side front airbag will not deploy inthe event of a collision. In this case, theSRS system and Occupant Weight Sensorshould be inspected by a trained and quali-fied Volvo service technician as soon aspossible.

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SAFETY
58
WARNING
Never try to open, remove or repair any components in the OWS system. Thiscould cause the system to malfunction.Maintenance or repairs should only becarried out by an a trained and qualifiedVolvo service technician.
The front passenger's seat should notbe modified in any way. This couldreduce pressure on the seat cushion,which might interfere with the OWSsystem's function.
Passeng- er's seatoccupancystatus OWS indi-cator lightstatus
Passenger'sside frontairbag sta-tus
Seat unoccu- pied OWS indi-cator lightlights upPassenger'sside front air-bag disabled
Seat occu-pied by lowweight occu- pant/object AOWS indi-
cator light lights up Passenger'sside front air-
bag disabled
Seat occu- pied byheavy occu-
pant/object OWS indi-
cator lightis not lit Passenger'sside front air-bag enabled
A
Volvo recommends that children always be properly restrained in appropriate child restraints in the rear seats.Do not assume that the passenger's side front airbag is dis-abled unless the PASSENGER AIRBAG OFF indicator lampis lit. Make sure the child restraint is properly installed. Ifthere is any doubt as to the status of the passenger's sidefront airbag, move the child restraint to the rear seat.
The OWS is designed to enable (may inflate) the passenger's side front airbag in the eventof a collision anytime the system senses that aperson of adult size is sitting properly in thefront passenger's seat. The PASSENGER AIR-BAG OFF indicator lamp will be off andremain off. If a person of adult size is sitting in the front passenger's seat, but the PASSENGER AIR- BAG OFF indicator lamp is on, it is possiblethat the person isn't sitting properly in theseat. If this happens:
Turn the vehicle off and ask the person toplace the backrest in an upright position.
Have the person sit upright in the seat,centered on the seat cushion, with theperson's legs comfortably extended.
Restart the vehicle and have the personremain in this position for about twominutes. This will allow the system todetect that person and enable the pas-senger's frontal airbag.
If the PASSENGER AIRBAG OFF indica-tor lamp remains on even after this, theperson should be advised to ride in therear seat.
This indicates limitations in OWS classifica-tion capability. It does not indicate OWS mal-function.ModificationsIf you are considering modifying your vehiclein any way to accommodate a disability, forexample by altering or adapting the driver's orfront passenger's seat(s) and/or airbag sys-tems, please contact Volvo at: In the United StatesVolvo Car USA, LLCCustomer Care Center

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KEY, LOCKS AND ALARM
* Option/accessory.
264
Alarm indicator
A red indicator light on the dashboard shows the status of the alarm:
Indicator off - the alarm is disarmed.
Indicator flashes once every two seconds -the alarm is armed.
The indicator flashes quickly after thealarm has been disabled for up to30 seconds or until the ignition is put in
I
mode – the alarm has been triggered.
In the event of alarm system failureIf a problem is detected in the alarmsystem, a symbol and the message
Alarm system failure Service
required will appear in the instru-
ment panel. Contact a workshop - an author- ized Volvo workshop is recommended.
NOTE
Do not attempt to repair or alter any of the components in the alarm system yourself.Any such attempt could affect the termsand conditions of your insurance policy.
Related information
Arming and disarming the alarm (p. 264)
Arming and disarming the alarm
The alarm is armed when the vehicle is locked.
Arming the alarmLock and arm the vehicle by
pressing the lock button on the remote key
.
touch the marked surface on the outside of the door handle or the rubberized pres- sure plate on the trunk lid 16
.
If the vehicle is equipped with both keyless locking/unlocking * and power trunk lid, the
button
on the lower edge of the trunk lid
can also be used to lock and arm the vehicle.
A red LED light on the dashboard will flash every other second when the vehicle is locked and thealarm is armed.

HYBRID INFORMATION
385
Charging cable components
Charge module
240 V adapter clip
240 V adapter
Charge coupler
Release button
Related information
Charging cable residual current device (p. 385)
Charging cable temperature monitoring(p. 386)
Charging the hybrid battery (p. 381)
Charging status in the charging cable'scharging module (p. 389)
Charging cable residual current device The charging cable has a circuit breaker that helps protect against current overloads andthermal overheating.
WARNING
Charging the hybrid battery may only be done from approved, grounded 120/240 Voutlets (AC, alternating current). If the elec-trical circuit or electrical socket's capacityis not known, let a licensed electricianinspect the electrical circuit's capacity.Using a charge level that exceeds the elec-trical circuit's or electrical outlet's capacitymay start a fire or damage the electrical cir-cuit.
WARNING
The charging cable's residual current breaker helps protect the vehicle'scharging system but cannot ensurethat an current overload will neveroccur.
Never use visibly worn or damagedelectrical sockets. Doing so could leadto fires or serious injury.
Never connect the charging cable to anextension cord.
Maintenance or replacement of thehybrid battery may only be performedby a trained and qualified Volvo servicetechnician.
If the charging cable's residual current device
is triggered, the blue indicator light in thecharging module will not illuminate when thecharging cable is plugged into an electricaloutlet (or the red warning light will glowsteadily). Have the outlet checked by alicensed electrician or try using another walloutlet.
Related information
Charge cable (p. 383)
Charging status in the charging cable'scharging module (p. 389)

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)

HYBRID INFORMATION
394
Twin Engine symbols and messages in the instrument panelA number of symbols and messages relating to the Twin Engine may be displayed in the instrument panel. They may also appear incombination with general indicator and warn-ing symbols and disappear when the neces-sary action has been taken.
Symbol Message Meaning
12 V Battery Charging fault, service urgent. Drive to workshopBattery fault. Contact a workshop
A
to have the battery checked as soon as possible.
12 V Battery Charging fault Stop safelyBattery fault. Stop the vehicle as soon as possible and contact a workshop A
to have the bat-
tery checked.
12 V Battery Fuse failure Service requiredBattery fault. Contact a workshop A
to have the system checked as soon as possible.
HV battery Overheated, stop safelyThe hybrid battery's temperature seems to be rising at an abnormal rate. Stop the vehicle and turn off the engine. Wait at least 5 minutes before driving. Call a workshop A
or inspect the
vehicle to make sure everything seems normal before continuing to drive.
Reduced performance Max vehicle speed limitedThe hybrid battery's charge level is too low for driving at high speeds. Charge the battery as soon as possible.
Propulsion system Harsh behavior at low speed, vehicle ok to useThe hybrid system is not functioning properly. Contact a workshop A
to have the system
checked as soon as possible.

HYBRID INFORMATION
395
Symbol Message Meaning
Hybrid system failure Service requiredThe hybrid system is not functioning. Contact a workshopA
to have the system checked as
soon as possible.
Charge cable Remove before startDisplayed when the driver attempts to start the vehicle with the charging cable still con- nected. Remove the charging cable and close the charger cover.
A An authorized Volvo workshop is recommended.
Related information
Initiating hybrid battery charging (p. 386)
Stopping hybrid battery charging (p. 392)
Charging the hybrid battery (p. 381)
Warning symbols in the instrument panel (p. 94)
Indicator symbols in the instrument panel(p. 91)
Hybrid gauge (p. 83)
Hybrid battery gauge (p. 84)

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STARTING AND DRIVING
436
WARNING
California Proposition 65 Operating, servicing and maintaining a pas- senger vehicle can expose you to chemi-cals including engine exhaust, carbon mon-oxide, phthalates, and lead, which areknown to the State of California to causecancer and birth defects or other reproduc-tive harm. To minimize exposure, avoidbreathing exhaust, do not idle the engineexcept as necessary, service your vehicle ina well ventilated area and wear gloves orwash your hands frequently when servicingyour vehicle. For more information go towww.P65Warnings.ca.gov/passenger-vehicle.
Related information
Opening/closing the fuel filler door (p. 434)
Fuel (p. 436)
Fuel
Volvo recommends the use of detergent gas- oline to control engine deposits.
Deposit control gasoline (gasoline with detergent additives)
Detergent gasoline is effective in keeping injectors and intake valves clean. Consistentuse of deposit control gasolines will helpensure good driveability and fuel economy. Ifyou are not sure whether the gasoline containsdeposit control additives, check with the serv-ice station operator.
NOTE
Volvo recommends not using external fuel injector cleaning systems, e.g. do not adddetergent additives to gasoline before orafter refueling.
Unleaded fuelAll Volvo vehicles have a three-way catalytic converter and must only use unleaded gaso-line. US and Canadian regulations require thatpumps delivering unleaded gasoline arelabeled "UNLEADED". Only the nozzles ofthese pumps will fit in your vehicle's fuel fillerinlet. It is unlawful to dispense leaded fuel intoa vehicle labeled "unleaded gasoline only".Leaded gasoline damages the three-way cata-lytic converter and the heated oxygen sensor system. Repeated use of leaded gasoline willlessen the effectiveness of the emission con-trol system and could result in loss of emissionwarranty coverage. State and local vehicleinspection programs will make detection ofmisfueling easier, possibly resulting in emis-sion test failure for misfueled vehicles.
NOTE
Some U.S. and Canadian gasolines contain an octane enhancing additive calledmethyl-cyclopentadienyl manganese tricar-bonyl (MMT). If such fuels are used, yourEmission Control System performancemay be affected, and the Check EngineLight (malfunction indicator light) locatedon your instrument panel may light. If thisoccurs, please return your vehicle to atrained and qualified Volvo service techni-cian for service.
Gasoline containing alcohol and ethers, "Oxygenated fuels"
Some fuel suppliers sell gasoline containing "oxygenates" which are usually alcohols orethers. In some areas, state or local lawsrequire that the service pump be marked indi-cating use of alcohols or ethers. However,there are areas in which the pumps areunmarked. If you are not sure whether there isalcohol or ethers in the gasoline you buy,check with the service station operator. To

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WHEELS AND TIRES
* Option/accessory.
522
WARNING
The wheel and tire sizes for your Volvo are specified to meet stringent stabilityand handling requirements. Unap-proved wheel/tire size combinationscan negatively affect your vehicle's sta-bility and handling.
Any damage caused by installation ofunapproved wheel/tire size combina-tions will not be covered by your newvehicle warranty. Volvo assumes noresponsibility for death, injury, orexpenses that may result from suchinstallations.
Related information
Checking tire pressure (p. 527)
Tire direction of rotation (p. 522)
Tread wear indicator (p. 523)
Tire pressure monitoring system
*
(p. 529)
Tire sealing system (p. 542)
Uniform Tire Quality Grading (p. 526)
Tire terminology (p. 523)
Tire sidewall designations (p. 524)
Loading recommendations (p. 558)
Tire direction of rotation Tires with tread designed to roll in only one direction are marked with an arrow on thesidewall.
The arrow shows the tire's direction of rotation.
The tire should maintain the same direc- tion of rotation throughout its service life.
Tires should only be moved between thefront and back, never from right to left orvice versa.
Incorrectly mounted tires impair the vehi-cle's braking properties and ability to forceaside rain, snow and slush.
The tires with the most tread shouldalways be mounted on the rear wheels tohelp reduce the risk of skidding.
NOTE
Use tires of the same type, dimensions and make (manufacturer) on each axle.
Related information
Tires (p. 520)

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WHEELS AND TIRES
* Option/accessory.
530 the system is not operating properly. The TPMS malfunction indicator is combined withthe low tire pressure telltale. When the systemdetects a malfunction, the telltale will flash forapproximately one minute and then remaincontinuously illuminated. This sequence willcontinue upon subsequent vehicle start-ups aslong as the malfunction exists. When the mal-function indicator is illuminated, the systemmay not be able to detect or signal low tirepressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of replace-ment or alternate tires or wheels on the vehi-cle that prevent the TPMS from functioningproperly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels onyour vehicle to ensure that the replacement oralternate tires and wheels allow the TPMS tocontinue to function properly.
Messages in the instrument panelIf tire pressure is too low, the low tire pressurewarning symbol is shown in the instrumentpanel along with a message. Check the infla- tion pressure in the
Car Status app in the
center display.
Tire pressure low Check Car Status
app in center display
Tire pressure system Temporarily
unavailable
Tire pressure system Service required
To keep in mind
Always save the new inflation pressure in the system after changing a tire or adjust-ing the inflation pressure.
If you switch to a tire of another size thanthe factory-mounted tires, the systemmust be reset by storing a new inflationpressure for these tires to avoid falsewarnings.
If a spare wheel 8
is used, it is possible that
the tire pressure monitoring system willnot work correctly due to the differencesbetween the wheels.
The system does not replace the need forregular tire inspection and maintenance.
It is not possible to deactivate the tirepressure monitoring system.
WARNING
Incorrect inflation pressure could lead to tire failure, which could cause thedriver to lose control of the vehicle.
The system cannot predict sudden tiredamage.
Related information
Recommended tire pressure (p. 529)
Viewing tire pressure status in the center display
* (p. 532)
Action when warned of low tire pressure (p. 533)
Saving a new inflation pressure in the monitoring system
* (p. 531)
8
Not available on all models.