2019 VOLVO S90 TWIN ENGINE climate control

||
CLIMATE CONTROL
230

NOTE
Maintained climate comfort is not possiblewhen there is not sufficient residual engineheat to maintain the climate settings in thepassenger compartment, or if the outsidetemperature is above approximately 20 °C(68 °F).

NOTE
Climate comfort maintenance will be deacti-vated if the vehicle is locked from the outsidein order to avoid using residual engine heatunnecessarily. This function is intended to beused to maintain climate comfort when thedriver or a passenger remains in the vehicleafter the engine is turned off.

Related information
Climate comfort retaining function (p. 229)

CLIMATE CONTROL
* Option/accessory.231
Parking climate symbols andmessages
A number of symbols and messages related toparking climate may be displayed in the instru-ment panel.
Messages related to parking climate can also bedisplayed in a device that has the Volvo On Call*app.
Symbol MessageMeaning
Parking climate
Service required
Parking climate is not functioning properly. Contact a workshopA to have the system checked assoon as possible.
Parking climate
Temporarily unavailable
Parking climate is temporarily not functioning properly. If the problem persists, contact a work-
shopA to have the system checked.
Parking climate
Unavailable Charge level too low
The parking climate cannot be activated because the hybrid battery's charge level is too low tostart the parking heater. Start the vehicle.
Parking climate
Unavailable, not connected to powersupply
The parking climate cannot be activated if the charging cable is not connected. Connect thecharging cable.
Parking climate
Limited Charge level too low
Parking climate will only run for a limited time when the hybrid battery's charge level is too low.Start the vehicle.
AAn authorized Volvo workshop is recommended.

Related information
Parking climate (p. 224)

CLIMATE CONTROL
232
Heater
The heater helps the engine and passengercompartment reach the correct temperaturebefore and while driving.
The heater has two sub-functions:
Parking heater - heats the passenger com-partment as needed when the parking cli-mate's preconditioning is activated.
Auxiliary heater - heats the passenger com-partment and engine while driving.
The heater is a high-voltage coolant heater and ismounted in the front right-side wheel housing.

Battery and charging
The heater is powered by the vehicle's hybrid bat-tery. If the charge level in the hybrid battery is toolow, the heater will switch off automatically and amessage will be displayed in the instrumentpanel.

NOTE
Make sure that the battery has sufficientcharge if the heater must be used.

Related information
Climate (p. 196)
Parking heater
The parking heater heats the passenger com-partment as needed before driving if precondi-tioning is activated.
The parking heater is one of two sub-functions ofthe vehicle's heater. The heater is mounted in thefront right-side wheel housing.
The parking heater starts automatically if theparking climate's preconditioning is activated andthe passenger compartment needs to be heated.
It switches off automatically when a set timertime or the heater's maximum run time expires, orif the car is restarted.
The heater's maximum running time is 40minutes.
Additional heater
The auxiliary heater helps heat the passengercompartment and engine while driving.
The auxiliary heater is one of two sub-functionsof the vehicle's heater. The heater is mounted inthe front right-side wheel housing.
The auxiliary heater is started and controlledautomatically when extra heat is required whilethe vehicle is being driven.
It switches off automatically when the ignition isswitched off.

CLIMATE CONTROL
233
Activating and deactivating theauxiliary heater
The auxiliary heater helps heat the passengercompartment and engine while driving.
It is possible to set whether automatic start forthe auxiliary heater should be activated or deacti-vated.
1.Tap Settings in the Top view in the centerdisplay.
2.Tap Climate.
3.Select Additional Heater to activate/deac-tivate automatic start for the auxiliary heater.

NOTE
If automatic start of the auxiliary heater isdeactivated, this may impair comfort in thepassenger compartment since the climatesystem then does not have a heat source dur-ing electrical operation.

STARTING AND DRIVING
}}
445
Hybrid battery - The hybrid battery's functionis to store electrical current. This energy isprovided by plugging the charging cable intoan electrical outlet, through regenerativebraking or from the high-voltage generator.This provides current to power the electricmotor and to temporarily power the electricalair conditioning to precondition the passen-ger compartment.
Combustion engine - The combustion enginestarts when the charge level in the hybridbattery is too low to provide the power outputrequested by the driver.
High-voltage generator2 - Charges the hybridbattery. Starter for the combustion engine.
Can provide the combustion engine withextra electrical current.
Electric motor - Powers the vehicle usingelectricity. Can provide extra torque andpower during acceleration. Provides electricalall-wheel drive functionality. Regeneratesbraking energy into electrical current.

Related information
General information about Twin Engine(p. 408)
Starting and stopping the combustion enginein Twin Engine vehicles (p. 445)
Drive modes (p. 446)
Transmission (p. 440)
Factors affecting electric motor range(p. 455)
Starting and stopping thecombustion engine in Twin Enginevehicles
An advanced control system determines the dis-tance that the vehicle can be driven on the com-bustion engine, electric motor, or both at thesame time. When driving on only the electricmotor, the vehicle may automatically start thecombustion engine due to outside circumstan-ces, e.g. low ambient temperatures. This is com-pletely normal. The combustion engine will alsoalways start when the hybrid battery is nearlyfully discharged.

Climate settings at low temperatures
At low ambient temperatures, the combustionengine will sometimes start automatically to helpachieve the desired passenger compartmenttemperature and air quality. The amount of timethe combustion engine is running can be affec-ted by:
lowering the temperature
reducing blower speed
activating Pure drive mode.

Using the electric motor in hot or cold
weather
At very low or high ambient temperatures, theelectric motor's driving range and power may be
2CISG (Crank Integrated Starter Generator) - Combined high-voltage generator and starter.

||
STARTING AND DRIVING
446
reduced and affect how often the combustionengine automatically starts.

Emission control system
To help ensure that the emission control systemfunctions optimally, the combustion engine willrun for several minutes after it is started. Theamount of time the combustion engine needs tobe used varies depending on the temperature ofthe three-way catalytic converter.

WARNING
California Proposition 65
Operating, servicing and maintaining a pas-senger vehicle can expose you to chemicalsincluding engine exhaust, carbon monoxide,phthalates, and lead, which are known to theState of California to cause cancer and birthdefects or other reproductive harm. To mini-mize exposure, avoid breathing exhaust, donot idle the engine except as necessary, serv-ice your vehicle in a well ventilated area andwear gloves or wash your hands frequentlywhen servicing your vehicle. For more infor-mation go to www.P65Warnings.ca.gov/passenger-vehicle.

Related information
Drive systems (p. 444)
Economical driving (p. 453)
Using the electric motor only (p. 454)
Drive modes (p. 446)
Drive modes
Drive modes affect the vehicle's driving charac-teristics in different ways to enhance and sim-plify the driving experience in certain types of sit-uations.
Drive modes enable easy access to the vehicle'smany functions and settings in different drivingsituations. The following systems are adapted tohelp optimize driving characteristics in each drivemode:
Steering
Engine/transmission/all-wheel drive
Brakes
Shock absorbers
Instrument panel
Climate control settings
Select the drive mode that is best suited to thecurrent driving conditions. Keep in mind that notall drive modes are available in all situations.
Available drive modes
WARNING
Keep in mind that the vehicle does not emitany engine noise when using the electricmotor and may therefore be difficult to detectfor children, pedestrians, cyclists or animals.This is particularly true at low speeds, e.g. inparking lots.

WARNING
Do not leave the vehicle in an unventilatedarea with a drive mode activated and the com-bustion engine switched off. The engine willstart automatically if the charge level in thehybrid battery is low and the resulting exhaustgases can be very harmful to people and ani-mals.

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
448

ECO Climate
In Pure mode, ECO climate is automatically acti-vated in the passenger compartment to helpreduce energy consumption.

NOTE
When the Pure drive mode is activated, set-tings for certain climate system and electricityconsuming functions are reduced. Some ofthese settings can be reset manually, but fullfunctionality will only be restored by leavingPure mode or adapting the Individual drivemode to full climate system functionality.
If condensation forms on the windows, tap themax defroster button, which will function normally.

AWD
Improves the vehicle's traction and handlingby increasing all-wheel drive.
This drive mode locks the vehicle in all-wheeldrive. An optimal distribution between front andrear axle torque helps provide the best possiblecontrol, stability and traction, e.g. on slipperyroads or when towing a heavy trailer or anothervehicle. The AWD drive mode is always availableregardless of the hybrid battery's charge status.
Both the combustion engine and the electricmotor are engaged to enable all-wheel drive,which results in higher fuel consumption.
In the other drive modes, the vehicle automati-cally adapts the need for all-wheel drive accord-ing to the road surface, and can activate the elec-tric motor or start the combustion engine as nee-ded.
POWER
Power mode is designed to provide sportierdriving characteristics and a faster accelera-tion response.
This drive mode maximizes the combined powerfrom the combustion engine and the electricmotor by providing power to both the front andrear wheels. Gear shifting will be faster and moredistinct and the transmission will prioritize gearswith a higher traction force. Steering response isfaster and suspension is stiffer.
Both the combustion engine and the electricmotor are engaged to enable all-wheel drive,which results in higher fuel consumption.
This drive mode is optimized for maximum per-formance and throttle response. It changes thethrottle response, gear shifting program andturbo boost system. Chassis settings and steer-ing and brake response are also optimized. ThePower drive mode is always available regardlessof the hybrid battery's charge status.

INDIVIDUAL
Customizes drive mode to personal preferen-ces.
Select one of the drive modes as a basis andadjust the settings to achieve your preferred driv-ing characteristics. These settings will be storedin your driver profile.
Individual drive mode is only available if it hasbeen activated in the center display.
Settings view3 for Individual drive mode.
1.Tap Settings in the Top view.
3The image is schematic and the details may vary depending on vehicle model or software update.