2019 VOLVO S90 TWIN ENGINE warning

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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.

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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

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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)

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1.Put the ignition in mode 0.
2.Make sure the auxiliary battery (the batteryused to jump start the discharged battery)has a voltage of 12 volts.
3.If the auxiliary battery is in another vehicle,turn off that vehicle's engine and make surethat the vehicles are not touching each other.
4. Clamp the red jumper cable onto the auxiliarybattery's positive (+) terminal (1).

CAUTION
Connect the jump cable carefully to preventshort circuits with other components in theengine compartment.
5. Fold back the cover over your vehicle's posi-tive (+) jump start terminal (2).
6. Clamp the other end of the red jumper cableto your vehicle's positive (+) jump start termi-nal (2).
7.Clamp the black jumper cable onto the auxili-ary battery's negative (-) terminal (3).
8. Clamp the other end of the black jumpercable to your vehicle's negative (-) groundpoint (4).
9. Make sure the jumper cables are securelyattached to help prevent sparks while jumpstarting.
10. Start the engine of the assisting vehicle andlet it run for a few minutes at a higher idlingspeed than normal, about 1500 rpm.
11. Start your vehicle's engine. If the enginedoes not start, allow an additional 10minutes of charging time and then try to startthe engine again.
NOTE
When the engine is started under normalconditions, the vehicle's electrical drive motoris prioritized – the gasoline engine remainsoff. This means that the electric motor has"started" and the vehicle is ready to be drivenonce the start knob has been turned clock-wise. Start of the electric motor is indicatedby the indicator lights on the instrument panelgoing out and its preselected theme illuminat-ing.

CAUTION
Do not touch the connections between thecable and the vehicle during the start attempt.Risk of sparking.
12. Remove the jumper cables in the reverseorder ‒ first the black cables and then thered cables.
Make sure that none of the clamps of theblack jumper cables come into contact witheither vehicle's positive (+) jump start termi-nals or either of the red jumper cable's con-nected clamps.
WARNING
PROPOSITION 65 WARNING! Battery posts,terminals, and related accessories containlead and lead compounds, chemicals knownto the state of California to cause cancer andreproductive harm. Wash hands after han-dling.

WARNING
Batteries generate hydrogen gas, whichis flammable and explosive.
Do not connect the jumper cable to anypart of the fuel system or to any movingparts. Avoid touching hot manifolds.
Battery fluid contains sulfuric acid. Do notallow battery fluid to contact eyes, skin,fabrics or painted surfaces.

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If contact occurs, flush the affected areaimmediately with water. Obtain medicalhelp immediately if eyes are affected.
Never expose the battery to open flameor electric spark. Do not smoke near thebattery. Failure to follow the instructionsfor jump starting can lead to injury.

NOTE
The vehicle cannot be started if the hybridbattery is discharged.

Related information
Starting the vehicle (p. 426)
Ignition modes (p. 429)
Adjusting the steering wheel (p. 193)
Selecting ignition mode (p. 430)
Towing using a towline
This section refers to one vehicle being towedbehind another using a towline.
Twin Engine vehicles may not be towed behindanother vehicle due to the risk of damage to theelectric motor. The vehicle must be lifted onto atow truck and transported with all four wheels onthe bed or lifting platform of the truck (no wheelsmay touch the road).
Towing another vehicle
Towing another vehicle requires a lot of power -use the AWD drive mode. This helps charge thehybrid battery and improve the vehicle's drivingand roadholding characteristics.
Before towing another vehicle, check applicablespeed limit regulations.

Jump starting
Do not tow the vehicle to start the engine. Use anauxiliary battery if the start battery's charge levelis so low that the engine cannot be started.

CAUTION
Attempts to tow-start the vehicle could causedamage to the electrical drive motor andthree-way catalytic converter.
Related information
Attaching and removing the towing eyelet(p. 469)
Hazard warning flashers (p. 157)
Recovery (p. 470)
Jump starting using another battery (p. 466)
Selecting ignition mode (p. 430)

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Related information
Towing using a towline (p. 468)
Recovery (p. 470)
Tool kit (p. 556)
Recovery
This section refers to transporting the vehiclewith a tow truck or similar vehicle.
Call a professional towing service for assistance.
In certain conditions, the towing eyelet can beused to pull the vehicle onto a flatbed tow truck.

CAUTION
Note that vehicles with Twin Engine mustalways be towed raised with all wheels on thetow truck.
For vehicles equipped with leveling control*:If the vehicle is equipped with pneumatic suspen-sion, this feature must be turned off before thevehicle is lifted onto a tow truck. Turning off thefunction in the center display.
1.Tap Settings in the Top view.
2. Tap My CarParking Brake andSuspension.
3.Select Disable Leveling Control.
The vehicle's location and ground clearancedetermine if it can be lifted onto a tow truck. Ifthe incline of the tow truck is too steep or if theground clearance under the vehicle is insufficient,attempting to pull it up may result in damage. Inthis case, the vehicle should only be lifted withthe tow truck's lifting equipment.
WARNING
No person or object should be behind the towtruck when the vehicle is lifted onto the bedof the truck.

Related information
Attaching and removing the towing eyelet(p. 469)

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HomeLink®*8
HomeLink®9 is a programmable remote control,integrated in the vehicle electrical system, thatcan control up to three different devices (e.g.garage door opener, alarm system, outdoor andindoor lighting) and thereby replace the remotecontrols for these.

General
The illustration is generic – the design may vary.
Button 1
Button 2
Button 3
Indicator light
HomeLink® is delivered integrated in the rearview
mirror. The HomeLink® panel consists of threeprogrammable buttons and an indicator light inthe mirror.
For more information about HomeLink®, pleasevisit www.HomeLink.com, www.youtube.com/HomeLinkGentex or call 1-800-355-3515.
Save the original remote controls for future pro-gramming (e.g. for use in another vehicle). It isalso advisable to delete the button programmingif the vehicle is sold.

Related information
Using HomeLink®* (p. 473)
Programming HomeLink®* (p. 471)
Type approval for HomeLink®* (p. 473)
Programming HomeLink®*10
Follow these instructions to program
HomeLink®, reset all programming, or programindividual buttons.
NOTE
In some vehicles, the ignition must be on or in
the "accessory position" before HomeLink®
can be programmed or used. It can be a goodidea to put new batteries in the remote con-
trol being replaced by HomeLink® for fasterprogramming and better radio signal trans-
mission. The HomeLink® buttons should bereset before programming.

WARNING
While HomeLink® is being programmed, thegarage door or gate being programmed maybe activated. Make sure that no one is nearthe door or gate during programming. Whenprogramming a garage door opener, it isadvised to park outside of the garage.
8Certain markets only.9HomeLink and the HomeLink house symbol are registered trademarks of Gentex Corporation.10Certain markets only.

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Using HomeLink®*12
Once HomeLink® is programmed, it can beused instead of the separate remote controls.
Press and hold the programming button. Thegarage door, gate, alarm system, etc. will be acti-vated (this may take several seconds). If the but-ton is held down for more than 20 seconds,reprogramming will begin. The indicator light willglow steadily or flash when the button has beenpressed. The original remote controls may be
used concurrently with HomeLink® if desired.

NOTE
If the ignition is off, HomeLink® works for30 minutes after the driver's door has beenopened.
WARNING
If you use HomeLink® to open a garagedoor or gate, be sure no one is near thegate or door while it is in motion.
Do not use HomeLink® with any garagedoor opener that lacks safety stop andreverse features as required by US fed-eral safety standards (this includes anygarage door opener model manufacturedbefore April 1, 1982). A garage door thatcannot detect an object - signaling thedoor to stop and reverse - does not meetcurrent U.S. federal safety standards. Formore information, contact HomeLink at:www.homelink.com.

Related information
HomeLink®* (p. 471)
Programming HomeLink®* (p. 471)
Type approval for HomeLink®* (p. 473)
Type approval for HomeLink®*13
FCC (USA) and IC (Canada)
This device complies with FCC rules part 15 andIndustry Canada RSS-210. Operation is subjectto the following two conditions: (1) This devicemay not cause harmful interference, and (2) Thisdevice must accept any interference that may bereceived including interference that may causeundesired operation.

WARNING
The transmitter has been tested and complieswith FCC and IC rules. Changes or modifica-tions not expressly approved by the partyresponsible for compliance could void theuser's authority to operate the device.14

Type approval for EU
Gentex Corporation hereby declares that
HomeLink® Model UAHL5 complies with theRadio equipment directive 2014/53/EU.
Wavelengths within which the radio equipmentoperates:
433.05MHz-434.79MHz <10mW E.R.P.
868.00MHz-868.60MHz <25mW E.R.P.
868.70MHz-868.20MHz <25mW E.R.P.
12Certain markets only.13Certain markets only.14The term "IC:" before the certification/registration number only signifies that Industry Canada technical specifications were met.