2020 VOLVO S90 TWIN ENGINE service

HYBRID INFORMATION
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General information about Twin Engine Twin Engine vehicles are driven just like any other vehicle, but certain functions differ froma vehicle powered exclusively by gasoline.The electric motor powers the vehicle primar-ily at low speeds; the gasoline engine is usedat higher speeds or during more active driv-ing.
The instrument panel displays Twin Engine- specific information - charging information,selected drive mode, distance to dischargedbattery and hybrid battery charge level. Different drive modes can be selected while driving, e.g. electric power only or, if morepower is needed, a combination of electric andgasoline power. The vehicle calculates a com-bination of driveability, driving experience,environmental impact and fuel economy forthe selected drive mode. In order to function optimally, the hybrid bat- tery (and its electrical drive systems) and thegasoline engine (and its drive systems) mustbe at the correct operating temperature. Bat-tery capacity can be considerably reduced ifthe battery is too cold or too hot. Precondi-tioning prepares the vehicle's drive systemsand passenger compartment before driving tohelp reduce both wear and energy consump-tion. It also helps increase the hybrid battery'srange.The hybrid battery which powers the electricmotor is recharged using the charging cable. Itcan also be recharged during light braking andthrough engine braking in gear position
B. The
combustion engine can also help recharge thehybrid battery.
Important
No electrical current
Keep in mind that if there is no electrical cur- rent to the vehicle, i.e. the ignition is switchedoff or the start battery is discharged, certainfunctions such as brakes, power steering, etc.will not work.
WARNING
If the vehicle does not have electrical cur- rent and both the electric motor and thegasoline engine are switched off, thebrakes cannot be used to stop the vehicle.
Towing not permitted
Never tow a Twin Engine vehicle behind another vehicle, as this could damage theelectric motor.
Exterior engine noise
Because there is no sound from the engine when only the electric motor is running, thevehicle is equipped with artificial exteriorbackground noise. This sound is intended tohelp warn children, pedestrians, cyclists, ani- mals, etc. outside the vehicle of the vehicle'sapproach.
High-voltage electrical current
WARNING
A number of electrical components in Twin Engine Plug-in Hybrid vehicles use high-voltage current and can be extremely dan-gerous if handled incorrectly. These com-ponents and any orange wiring in the vehi-cle may only be handled by trained andqualified Volvo service technicians.
Do not touch anything that is not clearly described in this Owner's Manual.
Related information
Charging the hybrid battery (p. 381)
Hybrid gauge (p. 83)
Drive modes (p. 419)
Starting and stopping preconditioning(p. 225)
Hybrid battery (p. 583)

HYBRID INFORMATION
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381

Factors affecting electric motor range (p. 429)
Automatic transmission (p. 412)
Towing using a towline (p. 443)
Charging the hybrid battery
In addition to the conventional fuel tank, your vehicle is also equipped with a rechargeablelithium-ion hybrid battery.
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.
The hybrid battery can be recharged using the charging cable stored in a storage space in thetrunk.
WARNING
The hybrid electrical system in your vehicle uses high voltage electrical current. Anydamage to this system or to the hybrid bat-tery may result in the danger of overheat-ing, fire, or serious injury. If the vehicle isinvolved in a collision or subjected to flood-ing, fire, etc., have it inspected by a trainedand qualified Volvo service technician. Priorto this inspection, the vehicle should beparked outdoors at a safe distance fromany building or potentially flammable mate-rials.
The hybrid battery's charging time depends on the charging current used.
NOTE
The capacity of the hybrid battery dimin- ishes somewhat with age and use, whichcould result in increased use of the gaso-line engine and consequently, slightlyhigher fuel consumption.
WARNING
If the hybrid battery needs to be replaced, this may only be done by a Volvo retailer orauthorized Volvo workshop.

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WARNING
The charging cable must be grounded when in use. It is equipped with a cordwith a grounding conductor and agrounding plug. The plug must beinserted into an appropriate outlet thatis properly installed and grounded inaccordance with all local codes andordinances and is not damaged in anyway.
Children should be supervised when inthe vicinity of the charging cable whenit is plugged in.
High voltage is present in your electricmeter housing and power distributionservice panel. Contact with high volt-age can cause death or serious per-sonal injury.
Do not use the charging cable if it isdamaged in any way. A damaged ormalfunctioning charging cable mayonly be repaired by a workshop – anauthorized Volvo workshop is recom-mended.
Always position the charging cable sothat it will not be driven over, steppedon, tripped over or otherwise damaged,or cause personal injury.
Disconnect the charger from the walloutlet before cleaning it.
Never connect the charging cable to an extension cord or a multiple plugsocket.
Also, refer to the manufacturer's instruc- tions for using the charging cable and itscomponents.
CAUTION
Power strips, extension cords, surge pro- tectors or similar devices must not be usedtogether with the charging cable since thismay involve a risk of fire, electric shocks,etc. An adapter may not be used between the 120/240 V outlet (AC, alternating current)and the charging cable.
CAUTION
Never detach the charging cable from the 120/240 V outlet (AC, alternating current)while charging is in progress – the120/240 V outlet could be damaged insuch circumstances. Always interruptcharging first and then disconnect thecharging cable – first from the vehicle'scharging socket and then from the120/240 V outlet.
CAUTION
Wipe the charging cable with a clean cloth lightly moistened with water or a milddetergent. Do not use chemicals or sol-vents.
WARNING
The charging cable and its components must not be rinsed or immersed in water.
CAUTION
Avoid exposing the charging module and its plug to direct sunlight. In such cases,the overheating protection in the plugcould reduce or cut off charging of thehybrid battery.

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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)

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Charging cable temperature monitoringTo help ensure the vehicle's hybrid battery is reliably charged each time it is connected,charging is stopped if the temperature in thecharging cable becomes too high and rea-ches a critical limit.
CAUTION
If charging is often inadvertently interrup- ted, have the charging cable and the vehi-cle's charging system inspected by atrained and qualified Volvo service techni-cian.
Related information
Charge cable (p. 383)
Opening and closing the charging socket cover
The cover for the hybrid battery's charging socket opens manually.
Press in the rear edge of the charger door and release.
Open the door.
Perform the following steps in reverse to close the charger door.
Related information
Initiating hybrid battery charging (p. 386)
Stopping hybrid battery charging (p. 392)
Charging the hybrid battery (p. 381)
Initiating hybrid battery charging
The hybrid battery is charged by connecting a charging cable between the vehicle and a120/240 V outlet (alternating current). Only use the charging cable supplied with the car or a replacement cable recommended byVolvo.
CAUTION
Never connect the charging cable if there is a risk of a thunderstorm or there is light-ning.

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WARNING
The charging cable must be grounded when in use. It is equipped with a cordwith a grounding conductor and agrounding plug. The plug must beinserted into an appropriate outlet thatis properly installed and grounded inaccordance with all local codes andordinances and is not damaged in anyway.
Children should be supervised when inthe vicinity of the charging cable whenit is plugged in.
High voltage is present in your electricmeter housing and power distributionservice panel. Contact with high volt-age can cause death or serious per-sonal injury.
Do not use the charging cable if it isdamaged in any way. A damaged ormalfunctioning charging cable mayonly be repaired by a workshop – anauthorized Volvo workshop is recom-mended.
Always position the charging cable sothat it will not be driven over, steppedon, tripped over or otherwise damaged,or cause personal injury.
Disconnect the charger from the walloutlet before cleaning it.
Never connect the charging cable to an extension cord or a multiple plugsocket.
Also, refer to the manufacturer's instruc- tions for using the charging cable and itscomponents.
CAUTION
Make sure that the 120/240 V outlet (AC, alternating current) has a power capacitysufficient for charging electric vehicles. Ifyou are uncertain of the capacity, have theoutlet checked by a licensed electrician.
Take out the charging cable from the storage compartment on the right side of the trunk.Note that the ignition must be switched offcompletely before charging.
Plug the charging cable into a 120/240 V outlet. Never use an extension cord.
Open the charger door. Push the charging handle all the way into the vehicle'ssocket.

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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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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.