cooling VOLVO S90 TWIN ENGINE 2019 User Guide

DRIVER SUPPORT
377

Related information
Steering assistance at risk of collision(p. 372)
Steering assistance during collision risksfrom oncoming traffic (p. 375)
Limitations of steering assistanceduring collision risks fromoncoming traffic
The function may have limited functionality incertain situations and not intervene, e.g.:
for smaller vehicles such as motorcycles
on roads that do not have clear lane mark-ings
if more than half of your vehicle has movedinto the adjacent lane
outside the speed range 60-140 km/h(37-87 mph)
when the power steering works at reducedpower - e.g. during cooling due to overheat-ing (see section "Speed-dependent steeringforce").
Functionality may also be reduced in other situa-tions, such as:
road work
winter driving conditions
narrow roads
poor road surfaces
a very sporty driving style
bad weather with reduced visibility.
In these demanding driving conditions, the func-tion may not be able to properly assist the driver.
In these situations, it is recommended that it isturned off.

NOTE
The function uses the vehicle's combinedcamera and radar unit, which has certain gen-eral limitations; see sections "Camera limita-tions" and "Radar sensor limitations".

Related information
Steering assistance at risk of collision(p. 372)
Steering assistance during collision risksfrom oncoming traffic (p. 375)
Speed-dependent steering wheel resistance(p. 270)
Camera limitations (p. 330)
Radar sensor limitations (p. 325)

DRIVER SUPPORT
}}
* Option/accessory.379
Activating/deactivating Steeringassistance during collision risks
from behind*
The driver can choose to have this function Onor Off.
Use this button in the centerdisplay's Function view to turnthe function On and Off.

NOTE
When the Collision avoidance assistancefunction is deactivated, all subfunctions of thefollowing are deactivated:
Steering assistance at risk of run-off
Steering assistance at risk of head-oncollision
Steering assistance during collision risksfrom behind*
Although it is possible to deactivate the func-tion, the driver is advised to keep it activatedsince it can help improve driving safety inmost cases.
Related information
Steering assistance at risk of collision(p. 372)
Steering assistance during collision risksfrom behind* (p. 378)
Limitations of steering assistanceduring collision risks from behind
The function may have limited functionality incertain situations and not intervene, e.g.:
for smaller vehicles such as motorcycles
if more than half of your vehicle has movedinto the adjacent lane
on roads/lanes with indistinct or no side lanemarkings
outside the speed range 60-140 km/h(37-87 mph)
when the power steering works at reducedpower - e.g. during cooling due to overheat-ing (see section "Speed-dependent steeringforce").
Functionality may also be reduced in other situa-tions, such as:
road work
winter driving conditions
narrow roads
poor road surfaces
a very sporty driving style
bad weather with reduced visibility.
In these demanding driving conditions, the func-tion may not be able to properly assist the driver.In these situations, it is recommended that it isturned off.

||
DRIVER SUPPORT
404

The parking sequence is cancelled
A parking sequence will be cancelled if:
the driver moves the steering wheel
the vehicle's speed exceeds 7 km/h (4 mph)
the driver taps Cancel in the center display
when the anti-lock brakes or the Electronicstability control are engaged - e.g. when awheel loses grip on a slippery road
when the power steering works at reducedpower - e.g. during cooling due to overheat-ing (see section "Speed-dependent steeringforce").
A message in the center display will explain whythe parking sequence was cancelled.

CAUTION
Under certain circumstances, PAP may not beable to find parking spaces – one reason maybe that the sensors are disrupted by externalsound sources that emit the same ultrasonicfrequencies that the system works with.
Examples of such sources include horns, wettires on asphalt, pneumatic brakes, exhaustnoise from motorcycles, etc.
NOTE
Dirt, ice and snow covering the sensorsreduce their function and can make measure-ment impossible.

Driver responsibility
The driver should keep in mind that PAP is aparking aid ‒ not an infallible fully automatic sys-tem. The driver must always be prepared to takecontrol and cancel a parking sequence if neces-sary.
There are a number of things to keep in mindwhen parking, including:
The driver is always responsible for determin-ing if the space suggested by PAP is suita-ble for parking.
Do not use PAP when using snow chains ora temporary spare tire.
Do not use PAP if there are any objects pro-truding from the vehicle.
Heavy rain or snowfall may inhibit PAP's abil-ity to accurately measure a parking space.
While searching and measuring the parkingspace, PAP may be unable to detect objectslocated far into the space.
PAP may not suggest parking spaces onnarrow streets if it does not detect sufficientspace for maneuvering the vehicle.
Use approved tires121 inflated to the correcttire pressure because this affects PAP's abil-ity to provide parking assistance.
PAP's function is based on the way the vehi-cles are parked behind and in front of yourparking space. If they are, for example,parked too close to the curb, there is a riskthat your vehicle's tires or wheel rims couldbe damaged by the curb during the parkingprocedure.
Perpendicular parking spaces may not bedetected or may be suggested unnecessarilyif a parked vehicle is sticking out more thanother parked vehicles.
PAP is intended to provide parking assis-tance on straight streets, not sections ofstreet with sharp curves or bends. Alwaysmake sure that your vehicle is parallel to rel-evant parking spaces when PAP is measur-ing the parking space.

CAUTION
Switching to another approved wheel and/ortire dimension could change the tire circum-ference, which would then require the PAPsystem to be updated. Consult a workshop –an authorized Volvo workshop is recom-mended.
121"Approved tires" refers to tires of the same type and make as the vehicle's original, factory-installed tires.

||
HYBRID INFORMATION
416
Open the charger door. Push the charginghandle all the way into the vehicle's socket.
3. The charging cable handle will lock intoplace and charging will begin within5 seconds. When charging starts, the greenLED light in the charging socket will begin toflash. The approximate remaining chargingtime or the charging status will be displayedin the instrument panel.
Charging may be temporarily interrupted ifthe vehicle is unlocked:
and a door is open ‒ charging will restartwithin a few minutes.
if no door is opened ‒ the vehicle willautomatically relock. Charging will resumeafter 1 minute.

CAUTION
Never detach the charging cable from the120/240 V outlet (AC, alternating current)while charging is in progress – the120/240 V outlet could be damaged in suchcircumstances. Always interrupt charging firstand then disconnect the charging cable – firstfrom the vehicle's charging socket and thenfrom the 120/240 V outlet.
During charging, condensation from the air con-ditioning may form under the vehicle. This is nor-mal and is caused by the hybrid battery cooling.
Related information
Charging the hybrid battery (p. 409)
Opening and closing the charging socketcover (p. 414)
Charging status in the vehicle's chargingsocket (p. 417)
Charging status in the instrument panel(p. 419)
Charging status in the charging cable'scharging module (p. 417)
Stopping hybrid battery charging (p. 421)

STARTING AND DRIVING
}}
447

HYBRID
This is the default mode in which the electricmotor and combustion engine work together.
The vehicle starts in Hybrid mode. The controlsystem uses both the electric motor and the gas-oline engine - separately or in tandem - and cal-culates optimal utilization with regard to perform-ance, fuel consumption and comfort. Drivingcapacity on the electric motor alone is deter-mined by factors such as the hybrid battery'scharge level, the need for heat/cooling in thepassenger compartment, etc.
If there is sufficient charge in the battery, it ispossible to drive solely on electric power. Whenthe accelerator pedal is pressed, only the electricmotor will be activated until the battery reaches acertain charge level. Above this level, the currentin the battery cannot supply the power requestedby the accelerator pedal and the combustionengine will start.
When the hybrid battery's charge level is low, thecombustion engine will start more frequently tosave the remaining current in the battery. Chargethe hybrid battery from a 120-240 volt outletusing a charging cable, or activate Charge inFunction view to reset the option of only usingthe electric motor.
This drive mode is designed for low energy con-sumption with an optimized mix between theelectric motor and gasoline engine, without com-promising on climate comfort or driving experi-ence. When faster acceleration is requested by
the driver, the electric driveline will be utilized tohelp provide maximum additional power. Thevehicle also monitors the driving conditions andautomatically engages all-wheel drive if neces-sary. All-wheel drive and extra electric power arealways available regardless of the battery'scharging status.

Information in the instrument panel
When driving in Hybrid mode, a hybrid gauge willbe displayed in the instrument panel. The gaugewill indicate the amount of electrical currentrequired when the driver depresses the accelera-tor pedal. The marker between the lightning andthe drop shows how much current is available.
The instrument panel gauge when both the electricmotor and the combustion engine are being used.
The instrument panel also shows howmuch current is being restored to thebattery (regenerated) during light brak-ing.
PURE
Uses the electric motor only, with the lowestpossible energy consumption and carbondioxide emissions.
This drive mode maximizes the use of the hybridbattery. Certain climate system functions arereduced to provide the longest distance usingonly electricity.
Pure mode is available when the hybrid battery issufficiently charged. Even in Pure mode, the com-bustion engine will start if the charge level in thebattery gets too low. The combustion engine willalso start
if the vehicle's speed goes above 125 km/h(78 mph)
if the driver requests more power than theelectric motor can provide
if factors such as cold weather affect thesystem or components.
This drive mode is optimized for maximum drivingdistance with electric propulsion and is primarilyintended for use in city driving. Pure helps pro-vide the lowest possible consumption even whenthe hybrid battery is fully discharged. ECO climateis activated to control the climate in the passen-ger compartment, and in slippery road conditionsslightly more wheel spin may be permitted beforeall-wheel drive is automatically activated.

STARTING AND DRIVING
}}
463

Minimum octane
Decals
Illustration 1: Sample fuel pump octane label5.
Illustration 2: Decal on the inside of the fuel filler flap onvehicles that require premium fuel6.
TOP TIER Detergent Gasoline
Volvo endorses the use of "TOP TIER DetergentGasoline" where available to help maintainengine performance and reliability. TOP TIERDetergent Gasoline meets a new standard jointlyestablished by leading automotive manufacturesto meet the needs of today's advanced engines.Qualifying gasoline retailers (stations) will, inmost cases, identify their gasoline as having metthe "TOP TIER Detergent Gasoline" standards.

NOTE
Information about TOP TIER Detergent Gaso-line is available at www.toptiergas.com.

NOTE
When switching to higher octane fuel orchanging gasoline brands, it may be neces-sary to fill the tank more than once before adifference in engine operation is noticeable.

Fuel Formulations
Do not use gasoline that contains lead or manga-nese as a knock inhibitor, and do not use leadadditives. Besides damaging the exhaust emis-sion control systems on your vehicle, lead hasbeen strongly linked to certain forms of cancer.
Many fuels contain benzene as a solvent.Unburned benzene has been strongly linked tocertain forms of cancer. If you live in an areawhere you must fill your own gas tank, take pre-cautions. These may include:
standing upwind away from the filler nozzlewhile refueling
refueling only at gas stations with vaporrecovery systems that fully seal the mouth ofthe filler neck during refueling
wearing neoprene gloves while handling afuel filler nozzle.
Use of Additives
With the exception of gas line antifreeze duringwinter months, do not add solvents, thickeners, orother store-bought additives to your vehicle'sfuel, cooling, or lubricating systems. Overuse maydamage your engine, and some of these additivescontain organically volatile chemicals. Do notneedlessly expose yourself to these chemicals.

WARNING
Never carry a cell phone that is switched onwhile refueling your vehicle. If the phone rings,this may cause a spark that could ignite gaso-line fumes, resulting in fire and injury.
5AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/26For supplementary information - see the car's Service and Warranty Booklet.

STARTING AND DRIVING
465
Overheating of engine andtransmission
In demanding driving conditions, such as drivingin mountainous areas or hot weather, there is arisk of the engine or transmission overheating,especially when carrying heavy loads.
Engine power may be temporarily limited.
Remove any auxiliary lights mounted in frontof the grille when driving in hot weather.
If the temperature in the engine's coolingsystem becomes too high, a warning symbolwill appear in the instrument panel along withthe message Engine temperature Hightemperature Stop safely. Pull over to asafe location and let the engine idle for a fewminutes to cool down.
If the message Engine temperature Hightemperature Turn off engine or Enginecoolant Level low, turn off engine is dis-played, stop the vehicle and turn off theengine.
If the transmission begins to overheat, analternative gear shifting program will beselected. An integrated protective functionwill also be activated, the warning symbol willilluminate and the message Transmissionwarm Reduce speed to lowertemperature or Transmission hot Stopsafely, wait for cooling will be displayed inthe instrument panel. Follow the recommen-dations given by reducing speed or stopping
the vehicle safely and letting the engine idlefor a few minutes to let the transmissioncool.
If the vehicle begins to overheat, the air con-ditioning may be temporarily switched off.
After a prolonged period of driving indemanding conditions, do not turn off theengine immediately after stopping.

NOTE
It is normal for the engine's cooling fan tooperate for a short time after the engine isswitched off.

Symbols in the instrument panel
Symbol Meaning
High engine temperature. Followthe recommendations provided.
Low coolant level. Follow the rec-ommendations provided.
Transmission hot/overheated/cool-ing. Follow the recommendationsprovided.
Related information
Refilling coolant (p. 599)
Preparing for a long trip (p. 457)

||
LOADING, STORAGE AND PASSENGER COMPARTMENT
* Option/accessory.578
The illustration is generic – the design may vary.
To lock the glove compartment:
Insert the key into the lock on the glove com-partment.
Turn the key 90 degrees clockwise.
Remove the key from the lock.
–To unlock, perform the above steps inreverse.

Using the glove box as a cooled area
The glove compartment can be used to cool e.g.drinks or food. Cooling is possible when the cli-mate system is active (i.e. when the ignition is inmode II or when the engine is running).
The illustration is generic – the design may vary.
Activate cooling
Deactivate cooling
–Activate or deactivate cooling by moving thecontrol as far as possible toward the passen-ger compartment/glove compartment.
Related information
Passenger compartment interior (p. 574)
Private Locking (p. 264)
Sun visors
In the ceiling in front of the driver and front pas-senger, there are sun visors that can be loweredand angled to the side as necessary.
The illustration is generic – the design may vary.
The mirror lighting* comes on automatically whenthe cover is lifted up.
The mirror frame has a holder for e.g. cards ortickets.

Related information
Passenger compartment interior (p. 574)

MAINTENANCE AND SERVICE
596
Engine compartment overview
This overview shows some service-related com-ponents.
Some of the components included in the vehi-cle's electric drive system are located in theengine compartment. Exercise caution whenaccessing the engine compartment and onlytouch what is required for normal maintenance.

WARNING
Orange wiring may only be handled by quali-fied personnel.

WARNING
Several components in the vehicle work withhigh voltage that can be hazardous in case ofan incorrect procedure.
Do not touch anything that is not clearlydescribed in this Owner's Manual.
Be careful when checking/filling fluids inthe engine compartment.
The layout of the engine compartment may vary depend-ing on model and engine variant.
Coolant expansion tank
Brake fluid reservoir (located on the driver'sside)
Washer fluid filler pipe12
Fusebox
Air filter
Engine oil filler pipe
WARNING
Bear in mind that the cooling fan (located atthe front of the engine compartment behindthe radiator) may start or continue runningautomatically up to about 6 minutes after theengine is turned off.
Always entrust engine washing to a workshop– an authorized Volvo workshop is recom-mended. If the engine is hot, there is a risk offire.

WARNING
The ignition system works with extremely highand dangerous voltages. The vehicle electricalsystem should always be in ignition mode 0when work in being performed in the enginecompartment.
Do not touch any spark plugs or ignition coilswhen the vehicle electrical system is in igni-tion mode II or when the engine is warm.

Related information
Opening and closing the hood (p. 594)
Filling washer fluid (p. 635)
Refilling coolant (p. 599)
Fuses in the engine compartment (p. 608)
Checking and filling engine oil (p. 598)
Ignition modes (p. 429)
12Fill the washer fluid at regular intervals, e.g. when refueling.

MAINTENANCE AND SERVICE
}}
599

NOTE
If the conditions for measuring oil level arenot 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 doesnot mean that anything is wrong in the vehi-cle systems.

Related information
Engine oil (p. 597)
Engine oil specifications (p. 646)
Ignition modes (p. 429)
Vehicle status (p. 588)
Refilling coolant
Coolant helps keep the combustion engine atthe 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 onthe 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 fromthe 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 unscrewthe 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.