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CAUTION
•When starting in cold weather, the auto- matic transmission may shift up at slightlyhigher engine speeds than normal untilthe automatic transmission fluid reachesnormal operating temperature.
• Do not race a cold engine immediatelyafter starting. Oil flow may not reachsome lubrication points fast enough toprevent engine damage.
• The engine should be idling when youmove the gear selector. Never accelerateuntil after you feel the transmissionengage. Accelerating immediately afterselecting a gear will cause harsh engage-ment and premature transmission wear.
• Selecting
P or N when idling at a stand-
still for prolonged periods of time will helpprevent overheating of the automatictransmission fluid.
Related information
• Ignition modes (p. 370)
• Turning the engine off (p. 374)
• Changing the remote key's battery (p. 232)
• Jump starting (p. 365)
Turning the engine off
The engine can be turned off using the start knob on the tunnel console.
Start knob in the tunnel console between the front seats
To turn off the engine:
–Turn the start knob toward STOP and
release it to switch the engine off.
If the gear selector is in P or if the vehicle is mov-
ing:
–Hold the knob in the STOP position until the
engine stops.
Related information
• Starting the engine (p. 372)
• Ignition modes (p. 370)
Driving systems
The XC90 T8 Twin Engine Plug-in Hybrid is a parallel hybrid, which means that it has two sep-arate drive systems: an electric motor and a gas-oline engine. Depending on the drive modeselected and the amount of electric power avail-able in the hybrid battery, the two systems canbe used in tandem or separately.
Two drive systemsA control system coordinates both of the drive systems to help optimize driving economy.
Hybrid battery
Gasoline engine
High voltage generator 3
Electric motor
3
Combined generator and starter motor (Crank Integrated Starter Generator).
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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 that isproperly installed and grounded inaccordance with all local codes and ordi-nances and is not damaged in any way
• Children should be supervised when inthe vicinity of the charging cable when itis plugged in
• High voltage is present in your electricmeter housing and power distributionservice panel. Contact with high voltagecan cause death or serious personalinjury
• Do not use the charging cable if it isdamaged in any way
• Always position the charging cable sothat it will not be driven over, stepped on,tripped over or otherwise damaged, orcause personal injury
• Disconnect the charger from the wall out-let before cleaning it
• Never connect the charging cable to anextension cord or a multiple plug socket
•If the hybrid battery needs to be replaced, this may only be done by Volvo retailer orauthorized Volvo workshop
Also, refer to the manufacturer's instructions for using the charging cable and its compo-nents.
CAUTION
• Never unplug the charging cable from a 120-/240-volt socket while the hybridbattery is being recharged. This couldresult in damage to the socket. Alwaysstop the charging process before unplug-ging the charging cable
• To clean the charging cable, wipe it witha clean cloth dampened with water or amild detergent solution suitable for useon automobile paint. Do not use chemi-cals or solvents. Do not submerge thecharging cable
Charging cable components
Charge module
240-volt adapter clip
240-volt adapter
Charge coupler
Release button
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Hybrid-related symbols and messages
A number of symbols and messages relating to the XC90 T8 Twin Engine Plug-in Hybrid may appear in the instrument panel. They may alsobe displayed in combination with general indica-tor and warning symbols and will go out whenthe necessary action has been taken.
SymbolMessageExplanation
Battery charging fault Service urgent Drive to workshopBattery fault. Contact a Volvo retailer or a trained and qualified Volvo service technician as soon as possible.
Battery charging fault Stop safelyBattery fault. Stop the vehicle as soon as possible and contact a Volvo retailer or a trained and quali- fied Volvo service technician.
Low battery charge Temporarily reduced functionalityThe hybrid battery's charge level is too low for optimal driving. Charge the battery as soon as possible.
Battery charging fault Low battery Stop safelyThe hybrid battery is not sufficiently charged. Stop the vehicle as soon as possible and charge the battery.
Battery failure Battery fuse Service requiredBattery failure. Contact a Volvo retailer or a trained and qualified Volvo service technician as soon as possible to have the system checked.
Battery overheated Stop safelyBattery temperature too high/too low. Stop the vehicle and turn off the engine. If the message remains after the engine has been restarted, contact a Volvo retailer or a trained and qualified Volvoservice technician.
Reduced performance Max vehicle speed limitedThe hybrid battery is not sufficiently charged for higher speeds. Charge the battery as soon as possi- ble.
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Preparations for charging the hybrid batterySeveral preparatory steps should be taken before starting to charge the hybrid battery.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 that isproperly installed and grounded inaccordance with all local codes and ordi-nances and is not damaged in any way
• Children should be supervised when inthe vicinity of the charging cable when itis plugged in
• High voltage is present in your electricmeter housing and power distributionservice panel. Contact with high voltagecan cause death or serious personalinjury
• Do not use the charging cable if it isdamaged in any way
• Always position the charging cable sothat it will not be driven over, stepped on,tripped over or otherwise damaged, orcause personal injury
• Disconnect the charger from the wall out-let before cleaning it
• Never connect the charging cable to anextension cord or a multiple plug socket
• If the hybrid battery needs to be replaced, this may only be done by Volvo retailer orauthorized Volvo workshop
Also, refer to the manufacturer's instructions for using the charging cable and its compo-nents.
Prior to chargingThe charging cable and any of its components should not be wet or submerged in any liquid. The charge module or its plug should not be exposed to direct sunlight. This could cause theunit's overheating protector to reduce or stop thehybrid battery charging process. Be sure the 120-/240-volt socket used has ade- quate current for charging electrically poweredvehicles. Have the socket checked by an licensedelectrician if you are uncertain.
Opening/closing the charger door
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381
Press in the rear section of the door and release it.
Open the door.
Pull off the charging socket's protective cover and place it in the holder on the insideof the door. Be sure that the protective cov-er's rubber plug faces down to help keep thecover from falling out of the holder.
Put the cover back in position and close the doorin reverse order.
Stopping hybrid battery charging
Stop hybrid battery charging by unlocking the vehicle, disconnecting the charging cable fromthe vehicle's charging socket and then unplug-ging the cable from the 120-/240-volt socket.
NOTE
Always unlock the vehicle to stop the charg- ing process before disconnecting the charg-ing cable from the vehicle's charging socketand then unplugging it from the120-/240-volt socket. The cable must be disconnected from the vehicle's charging socket before it isunplugged from the 120-/240-volt socketto help prevent damage to the chargingsystem.
Unlock the vehicle with the remote key.
Press the release button on the charge cou- pler to release it and disconnect the couplerfrom the vehicle's charging socket. Removethe cable from the vehicle. Put the socket'scover back in place and close the chargerdoor.
Disconnect the cable from the 120-/240-volt socket. Stow the cable in the storage compartment under the cargo area floor.
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4. The charging cable's coupler will lock onto
the charging socket and charging will begin within approx. 10 seconds. The approximateremaining charging time and charging statuswill be displayed in the instrument panel. Seealso the article "Hybrid battery charge sta-tus." Charging will be temporarily interrupted if the vehicle is unlocked: •If a door is opened, charging will restart within 2 minutes.
• if no door is opened, the vehicle will auto-matically relock and charging will restartafter 1 minute.
NOTE
Charging status is shown in the instrument panel, which goes dark after a period of time.Reactivate the instrument panel by: •pressing the brake pedal
• opening one of the doors
• putting the ignition in mode
I ( without
pressing the brake pedal , turn the start
knob to START and release it).
CAUTION
Never disconnect the charging cable from the 120-/240-volt socket while charging is inprogress. This could damage the socket. Always stop the charging process (by unlock- ing the vehicle) and disconnect the chargingcable from the vehicle's charging socket before disconnecting the other end from the
120-/240-volt socket being used.
During the charging process, condensation may form under the vehicle, which is normal and iscaused by cooling the hybrid battery.
Related information
• Hybrid battery charge status (p. 385)
• Charging the hybrid battery (p. 383)
• Hybrid battery charging cable (p. 375)
• Stopping hybrid battery charging (p. 381)
Charging the hybrid battery In addition to the conventional fuel tank, the XC90 T8 Twin Engine Plug-in Hybrid is alsoequipped with a rechargeable lithium-ion hybridbattery.
The hybrid battery is recharged using a charging cable located in a storage compartment underthe floor of the cargo area. See also the article"Charging cable."
WARNING
The hybrid electrical system in your vehicle uses high voltage electrical current. Any dam-age to this system or to the hybrid batterymay result in the danger of overheating, fire,or serious injury. If the vehicle is involved in acollision or is subjected to flooding, fires, etc.,have it inspected by a trained and qualifiedVolvo service technician. Prior to this inspec-tion, the vehicle should be parked outdoors ata safe distance from any building or poten-tially flammable materials.
The hybrid battery's charging time depends on the charging current used.
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GraphicMessageExplanation
Fully chargedat:[Time]
is
displayed with ananimatedblue puls-ing lightthroughthechargingcable.
Charging is in pro- gress and the approx-imate time when thebattery will be fullycharged will be dis-played.
GraphicMessageExplanation
Charg- ing com-plete
is
displayed. An imagewill besuperim-posedover thegraphic ofthe vehi-cle with agreenLEDindicatorlight inthechargingsocket.
The battery is fully charged.
Charg- ing error
will be displayedand theLED indi-cator lightin thechargingsocketwill bered.
A fault has occurred. Check that the charg-ing cable is correctlyconnected to thevehicle's chargingsocket and the120-/240-volt socket.
Related information
• Hybrid battery charging cable (p. 375)
• Charging the hybrid battery (p. 383)
• Preparations for charging the hybrid battery (p. 380)
• Stopping hybrid battery charging (p. 381)
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Charger status indicators
The red and blue lights in the charging cable's charge module give an indication of the chargestatus.
Charge module: 1. red warning light, 2. blue status indi- cator
Red warning light
• When the charge module is initially plugged into a wall socket, 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.
• If the red warning light continues to flash orglows steadily, a fault has been detected andthe charger will not deliver power to the vehi-cle. Contact a Volvo retailer or a trained andqualified Volvo service technician.
Blue status indicator
• When the charge module is plugged into a wall socket, the blue status indicator illumi-nates and glows steadily to show that thecharger is ready to use.
• When the charge coupler (the plug on theother end of the charging cable) has beenplugged into the vehicle's charging socket,the blue status indicator will flash once.
• The blue status indicator will then flashapproximately every two seconds to indicatethat charging is taking place.
• When the indicator light glows steadily, thisindicates that charging has been completed.This will also be indicated by the charginggauge on the instrument panel.
When charging is completed, press the release button on the charge coupler and disconnect itfrom the vehicle. Unplug the charge module from the wall socket.
Related information
• Hybrid battery charging cable (p. 375)
• Hybrid battery charge status (p. 385)
• Hybrid charging cable circuit breaker (p. 377)
• Hybrid-related symbols and messages(p. 378)
Hybrid battery charging current
Charging current is used to charge the hybrid battery and to precondition the vehicle. Chargingis done through a cable connected between thevehicle's charging socket and a120-/240-volt socket.
When charging is in progress, an indicator light in the charging socket illuminates to indicate thecharging status. Charging current is primarilyused to recharge the hybrid battery and to pre-condition the vehicle but is also used to rechargethe vehicle's start battery.
CAUTION
Never disconnect the charging cable from the 120-/240-volt socket while charging is inprogress. This could damage the socket. Always stop the charging process (by unlock- ing the vehicle) and disconnect the chargingcable from the vehicle's charging socket before disconnecting the other end from the
120-/240-volt socket being used.