engine VOLVO XC90 TWIN ENGINE 2020 Service Manual

CLIMATE CONTROL
241
Activating and deactivating the auxiliary heater The auxiliary heater helps heat the passenger compartment and engine while driving.
It is possible to set whether automatic start for the auxiliary heater should be activated ordeactivated. 1.Tap
Settings in the Top view in the center
display.
2. Tap
Climate.
3. Select
Additional Heater to activate/
deactivate automatic start for the auxiliary heater.
NOTE
If automatic start of the auxiliary heater is deactivated, this may impair comfort in thepassenger compartment since the climatesystem then does not have a heat sourceduring electrical operation.
Related information
Additional heater (p. 240)

KEY, LOCKS AND ALARM
* Option/accessory.
246
Remote key
The remote key is used to lock and unlock doors and the tailgate. The remote key mustbe in the vehicle in order to start the engine.
Remote key 3
and button-less key (Key Tag) *.
The remote key is not physically used to start the ignition because the vehicle is standard-equipped with keyless start (Passive Start).The key only needs to be in the front section ofthe passenger compartment. For vehicles equipped with keyless locking and unlocking (Passive Entry) *, the engine can
be started with the key anywhere in the vehi- cle. A smaller, lighter and button-less key (KeyTag) is also provided. The remote keys can be linked to different driver profiles to store personal settings in thevehicle.
Remote key buttons
The remote key has four buttons, one on the left side and three on the right.
Locking - Press once to lock the doors,
tailgate and fuel filler door and arm the alarm. Press and hold to close all windows.
Unlocking - Press once to unlock the
doors and tailgate and disarm the alarm. Press and hold to open all windows at the same time. This total airing function canbe used to e.g. quickly air out the vehiclein hot weather.
Tailgate - Unlock and disarm the tailgate
only. On vehicles equipped with the power tailgate *, press and hold to automatically
open the tailgate. Press and hold to close an open tailgate (an audible warning sig- nal will be given).

Panic alarm - Used to attract attention in
emergency situations. Press and hold the button for at least 3 seconds or presstwice within 3 seconds to activate theturn signals and horn. To deactivate, waitat least 5 seconds and press the buttonagain. If no action is taken, the panic alarmwill deactivate automatically after 3minutes.
WARNING
If anyone is left in the vehicle, make sure that power to the power windows and pan- oramic roof * is cut off by always taking the
remote key with you when you leave the vehicle.
3 The illustration is generic - details may vary according to vehicle model.

KEY, LOCKS AND ALARM
}}
* Option/accessory.247
NOTE
Be aware of the risk of locking the remote key in the vehicle. If the remote key or key tag is left in the vehicle, it will be deactivated whenthe vehicle is locked and the alarm setusing another valid key. The key will bereactivated when the vehicle isunlocked.
If the remote key or Red Key is left inthe vehicle, it will be deactivated evenif the vehicle is locked using Volvo OnCall, and will be reactivated when thevehicle is unlocked using Volvo On Callor another valid key.
Button-less key (Key Tag)
*
The button-less key4
provided with the keyless
locking and unlocking function works in the same way as the regular remote key for key-less start, locking and unlocking. The key iswaterproof up to a depth of approx. 10 meters(30 feet) for up to 60 minutes. It does nothave a detachable key blade and its batterycannot be replaced.
Red Key - restricted remote key *A Red Key is a key that makes it possible to set restrictions for some of the vehicle's func- tions, e.g. maximum speed and maximum audio system volume. It helps vehicle ownersensure that the vehicle is being operatedresponsibly by other drivers.
InterferenceElectromagnetic fields or obstructing objectsmay interfere with the remote key's functionsfor keyless start and keyless locking and unlocking
*.
NOTE
Avoid storing the remote control key near metal objects or electronic devices, e.g.cell phones, tablets, laptops or chargers –preferably no closer than 10-15 cm(4-6 in.).
If you experience interference, use the remote key's detachable blade to unlock the vehicleand then place the remote key in the backupreader in the tunnel console cup holder to dis-arm the alarm and start the vehicle.
NOTE
When the remote control key is placed in the cup holder, make sure that no othervehicle keys, metal objects or electronicdevices (e.g. cell phones, tablets, laptopsor chargers) are found in the cup holder.Multiple vehicle keys close to each other inthe cup holder can disrupt their functional-ity.
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.
4
Also called sport key.

KEY, LOCKS AND ALARM
}}
* Option/accessory.251
approx. 1.5 meter (5 feet) along the sides of the vehicle or approx. 1 meter (3 feet) from thetailgate.
NOTE
The functions of the remote control key can be disrupted by ambient radio waves,buildings, topographical conditions, etc.The vehicle can always be locked/unlockedusing the key blade.
If the remote key is removed from the vehicle
If the remote key is removed from the vehicle while the engine is run- ning, the warning message
Vehicle
key not found Removed from
vehicle will be displayed in the instrument
panel and an audible signal will sound when the last door is closed.
The message will disappear when the key is returned to the vehicle and the O button on
the right-side steering wheel keypad ispressed or when the last door is closed again.
Related information
Remote key (p. 246)
Antenna locations for the start and locksystem (p. 264)
Keyless and touch-sensitive surfaces
*
(p. 261)
Replacing the remote key's battery
The battery in the remote key must be replaced when it is discharged.
NOTE
All batteries have a limited service life and must eventually be replaced (does notapply for Key Tag). The battery's service lifevaries depending on how often thevehicle/key is used.
The remote key battery should be replaced if
the information symbol illuminates and the message
Vehicle key bat. low is dis-
played in the instrument panel
the locks do not react after several attempts to lock or unlock the vehicleusing the remote key within approx.20 meter (65 feet) from the vehicle.
NOTE
Move closer to the vehicle and try to unlock it again.
The battery in the smaller key without but- tons 7
(the Key Tag) cannot be replaced. A new key can be ordered from an authorized Volvo workshop.
CAUTION
An end-of-life Key Tag must be turned in to an authorized Volvo workshop. The keymust be deleted from the vehicle becauseit can still be used to start the vehicle viabackup start.
Opening the key and replacing the battery
Hold the remote key with the front side
(with the Volvo logo) facing up and move the button on the key ring section to theright. Slide the front cover slightly upward.
The cover will loosen and can be
removed from the key.

||
KEY, LOCKS AND ALARM
* Option/accessory.
254
Turn the remote key over and press the
front cover down until it clicks into place.
Slide the cover back.
> An additional click indicates that the cover is correctly in place.
CAUTION
Be sure to dispose of end-of-life batteries in a way that protects the environment.
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.
Related information
Locking and unlocking with detachable key blade (p. 258)
Starting the vehicle (p. 412)
Remote key (p. 246)
Ordering additional remote keys Two remote keys are provided with the vehi- cle. One Key Tag is also included if the vehi-cle is equipped with keyless locking/unlock- ing
*. Additional keys can be ordered.
A total of 12 keys can be programmed and used for the same vehicle. An additional driverprofile will be added for each new remote key.This also applies to the key tag.
Loss of a remote keyIf you lose your remote key, you can order areplacement from a workshop - an authorizedVolvo workshop is recommended. Bring theother remaining remote keys to the workshop.As an anti-theft measure, the code of the lostremote key must be erased from the system. The current number of keys registered for the vehicle can be checked via driver profiles inthe center display's Top view. Select
Settings
SystemDriver Profiles.

DRIVER SUPPORT
}}
* Option/accessory.281
WARNING
If the temperature rises too high, the power steering may be forced to switch off com-pletely. In such a situation, the driver dis- play shows the message
Power steering
failure Stop safely along with a symbol.
Changing the level of steering wheel resistance *
In INDIVIDUAL drive mode, the level of steer- ing wheel resistance can be adjusted. 1.
Tap
Settings in the center display's Top
view.
2. Select
My CarDrive ModesSteering Force.
Steering wheel resistance settings can only be accessed if the vehicle is stationary or is mov-ing straight ahead at a low speed.
Related information
Driver support systems (p. 280)
Drive modes (p. 433)
Electronic Stability Control
The Electronic Stability Control (ESC 1
) func-
tion helps the driver avoid skidding and improves the vehicle's directional stability.
This symbol will be displayed in the instrument panel whenthe system is intervening. When the system has inter- vened to apply the brakes, apulsing sound may be heard
and the vehicle may accelerate more slowlythan expected when the accelerator pedal isdepressed.
The system consists of the following sub-func- tions:
Stability control 2
Spin control and active yaw control
Engine drag control
Trailer Stability Assist
WARNING
The function is supplementary driver support intended to facilitate drivingand help make it safer – it cannot han-dle all situations in all traffic, weatherand road conditions.
The driver is advised to read all sec-tions in the Owner's Manual about thisfunction to learn of its limitations,which the driver must be aware ofbefore using the function.
Driver support functions are not a sub-stitute for the driver's attention andjudgment. The driver is always respon-sible for ensuring the vehicle is drivenin a safe manner, at the appropriatespeed, with an appropriate distance toother vehicles, and in accordance withcurrent traffic rules and regulations.
Stability control 2This function helps control the driving andbraking force of each individual wheel in anattempt to stabilize the vehicle.
Spin control and active yaw controlThis function is active at low speeds andbrakes the wheels that are spinning to transfer
1
Electronic Stability Control
2 Also called traction control.

||
DRIVER SUPPORT
* Option/accessory.
282 additional power from wheels that are not spinning. This function can also help prevent the wheels from spinning while the vehicle is accelerating.
Engine drag control
Engine drag control (EDC
3
) can help prevent
inadvertent wheel lock, e.g. after downshiftingor using engine braking when driving at lowspeeds on a slippery surface. Inadvertent wheel lock while driving could impair the driver's ability to steer the vehicle.
Trailer Stability Assist *4
Trailer Stability Assist (TSA
5
) is designed to
help stabilize a vehicle that is towing a trailer ifthe vehicle and trailer have begun to sway.
NOTE
Trailer Stability Assist is deactivated if ESC
Sport Mode is activated.
Related information
Driver support systems (p. 280)
Activating or deactivating Sport mode for Electronic Stability Control (p. 283)
Electronic Stability Control symbols andmessages (p. 284)
Trailer Stability Assist
* (p. 467)
Electronic Stability Control in sport mode The stability system (ESC 6
) is always acti-
vated and cannot be switched off. However, the driver can select
ESC Sport Mode,
which offers more active driving characteris- tics.
With the ESC Sport Mode sub-function
selected, intervention from the system is reduced and more lateral movement is permit-ted, giving the driver more control of the vehi-cle than usual. When
ESC Sport Mode is selected, the func-
tion may seem to be disabled even though it continues to assist the driver.
NOTE
When ESC Sport Mode is selected, the
trailer stabilizer (TSA 7
) is switched off.
ESC Sport Mode also helps provide more
traction, even if the vehicle gets stuck or is driving on a loose surface such as deep snowor loose sand.
3 Engine Drag Control4Trailer Stability Assist is included if the vehicle is equipped with a Volvo original towbar.5 Trailer Stability Assist
6 Electronic Stability Control
7 Trailer Stability Assist

DRIVER SUPPORT
* Option/accessory.283
Related information
Electronic Stability Control (p. 281)
Activating or deactivating Sport mode for Electronic Stability Control (p. 283)
Trailer Stability Assist
* (p. 467)
Activating or deactivating Sport mode for Electronic StabilityControl
The stability system (ESC 8
) is always acti-
vated and cannot be switched off. However, the driver can select Sport mode, whichoffers more active driving characteristics.
Activate or deactivate the function using this button inthe center display's Functionview.
GREEN button indicator light – the func- tion is activated.
GRAY button indicator light – the functionis deactivated.
When
ESC Sport Mode is acti-
vated, this symbol will illuminate with a steady glow in the instrumentpanel. It will remain on until the
driver deactivates the function or until theengine is turned off. The system will return tonormal mode the next time the engine isstarted.
The ESC Sport Mode function cannot be
selected when any of the following functions are activated:
Cruise control
Adaptive Cruise Control
*
Pilot Assist
*
Related information
Electronic Stability Control in sport mode(p. 282)
Electronic Stability Control (p. 281)
8
Electronic Stability Control

DRIVER SUPPORT
284
Electronic Stability Control symbols and messagesA number of symbols and messages related to Electronic Stability Control (ESC 9
) may be displayed in the instrument panel. Several examples are provided below.
Symbol Message Meaning
Steady glow for approx. 2 seconds. System check when the engine is started.
Flashing light. The system is actively operating.
Steady glow. Sport mode is activated.
NOTE! The system is not deactivated in this mode, but has partially
reduced functionality.
ESC Temporarily offThe system's functionality has been temporarily reduced due to high brake system temperatures. The function will be automatically reactivated when the brakes have cooled.
ESC Service requiredThe system is not functioning properly. Stop the vehicle in a safe place, turn off the engine and then restart it.
A text message can be erased by briefly press- ing the
button in the center of the right-
side steering wheel keypad. If the message persists: Contact a workshop
‒
an authorized Volvo workshop is recom- mended.
Related information
Electronic Stability Control (p. 281)
9
Electronic Stability Control

DRIVER SUPPORT
}}
* Option/accessory.285
Stability system
The Roll Stability Control (RSC 10
) system
helps reduce the risk of a rollover in the event of e.g. a sudden evasive maneuver or if thevehicle begins to skid.
The system monitors the lateral angle at which the vehicle is leaning and registers anychanges. Using this information, the systemcalculates the likelihood of a rollover. If there isan imminent risk of a rollover, Electronic Sta-bility Control is activated, engine torque isreduced and brakes are applied to one or moreof the wheels until the vehicle has regainedstability.
WARNING
The vehicle