2020 VOLVO S90 TWIN ENGINE parking brake

DRIVER SUPPORT
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* Option/accessory.283
WARNING
With automatic standby mode, the driver is warned by an acoustic signal and a mes-sage on the instrument panel.
The driver must then regulate vehicle speed, apply the brakes if necessary,and maintain a safe distance to othervehicles.
Adaptive Cruise Control may go into standbymode if: your vehicle's speed goes below 5 km/h(3 mph) and ACC cannot determine if thevehicle ahead is stationary or if it isanother object, e.g. a speed bump.
your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns sothat ACC no longer has a vehicle to follow.
the driver opens the door.
the driver unbuckles the seat belt.
the engine speed (rpm) is too low/high.
one or more of the wheels lose traction.
the brake temperature is high.
the parking brake is applied.
the camera/radar sensor is covered bysnow or heavy rain (the camera lens/radarwaves are blocked).
Related information

Adaptive Cruise Control
* (p. 278)
Selecting and activating Adaptive Cruise Control
* (p. 280)
Deactivating Adaptive Cruise Control
*
(p. 281)
Adaptive Cruise Control
* limitations
(p. 283)Adaptive Cruise Control *26
limitations
Adaptive Cruise Control (ACC 27
) may have
limited functionality in certain situations.
Steep roads and/or heavy loadsAdaptive Cruise Control is primarily intended to be driven on flat roads. The function maynot be able to maintain the correct time inter-val to the vehicle ahead when driving downsteep hills. The driver should be extra attentiveand prepared to apply the brakes.
Other limitationsThe Off Road drive mode cannot be selected
if Adaptive Cruise Control is activated.
26 Depending on market, this function can be either standard or optional.
27 Adaptive Cruise Control

DRIVER SUPPORT
* Option/accessory.
292
Pilot Assist *38
standby mode
Pilot Assist can be deactivated and put in standby mode. This may happen automati-cally or be due to driver intervention.
Standby mode means that the function is selected in the instrument panel but not acti-vated. In standby mode, Pilot Assist will notregulate the speed or distance to the vehicleahead or provide steering assistance.
Standby mode due to action by the
driver
Pilot Assist will be deactivated and put instandby mode if any of the following occurs:
The brakes are applied.
The gear selector is moved to
N.
A turn signal is used for more than1 minute.
The vehicle is driven faster than the setspeed for more than 1 minute.
Automatic standby modePilot Assist is dependent on other systems, such as Electronic Stability Control (ESC 39
). If
any of these other systems stops working, Pilot Assist will be automatically deactivated.
WARNING
With automatic standby mode, the driver is warned by an acoustic signal and a mes-sage on the instrument panel.
The driver must then regulate vehicle speed, apply the brakes if necessary,and maintain a safe distance to othervehicles.
Adaptive Cruise Control may go into standbymode if, e.g.: the driver opens the door.
the brake temperature is high.
the driver's hands are not on the steering wheel.
the parking brake is applied.
the engine speed (rpm) is too low/high.
the driver unbuckles the seat belt.
one or more of the wheels lose traction.
the camera/radar sensor is covered by snow or heavy rain (the camera lens/radarwaves are blocked).
your vehicle's speed goes under 5 km/h(3 mph) and Pilot Assist cannot determineif the vehicle ahead is stationary or if it isanother object, e.g. a speed bump.
your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns sothat Pilot Assist no longer has a vehicle tofollow.
Related information

Pilot Assist
* (p. 287)
Selecting and activating Pilot Assist
*
(p. 290)
Deactivating Pilot Assist
* (p. 291)
Pilot Assist
* limitations (p. 293)
38
Depending on market, this function can be either standard or optional.
39 Electronic Stability Control

||
DRIVER SUPPORT
* Option/accessory.
300
Related information
Driver support systems (p. 268)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)
Distance Alert
* (p. 273)
Head-up display
* (p. 139)
Auto-hold braking with driver support
The driver support functions Adaptive Cruise Control * and Pilot Assist * have a special brake
function in slow traffic and while stationary.
Braking function in slow traffic and at a standstill
In slow-moving, stop-and-go traffic or when stopped at a traffic light, driving will resumeautomatically if the vehicle is stopped for lessthan approx. 3 seconds. If it takes more than 3seconds for the vehicle ahead to begin movingagain, the driver support function will go intostandby mode and the auto-hold brake func-tion will activate.
–The function can be reactivated by:
Pressing the
button on the steer-
ing wheel keypad.
Pressing the accelerator pedal.
> The function will resume following the vehicle ahead if it begins to move within approx. 6 seconds.
WARNING
A noticeable increase in speed may follow when the speed is resumed with the
steering wheel button.
WARNING
The driver support system only issues a warning for obstacles detected by its radarsensor – thus, a warning may come after adelay or not at all.
Never wait for a warning or assistance. Apply the brakes when necessary.
NOTE
Driver support can keep the vehicle sta- tionary for no more than 5 minutes – afterthat time the parking brake is applied andthe function is deactivated. The parking brake must be released before driver support can be reactivated.

DRIVER SUPPORT
* Option/accessory.301
Deactivation of the Auto-hold brake function
In certain situations, auto-hold will be deacti- vated when the vehicle is at a standstill andthe function will go into standby mode. Thismeans that the brakes will be released and thevehicle could begin to roll. The driver mustactively apply the brakes to keep the vehiclestationary. This can occur if:
the driver depresses the brake pedal
the parking brake is applied
the gear selector is moved to the
P, N or R
positions
the driver puts the function in standby mode.
Auto Activate Parking BrakeIn certain situations, the parking brake will beapplied to keep the vehicle at a standstill. This occurs if the function is keeping the vehi- cle stationary using the brakes and:
the driver opens the door or unbuckleshis/her seat belt
the function has kept the vehicle at astandstill for more than approx. 5 minutes
the brakes overheat
the driver switches off the engine man-ually.
Related information
Driver support systems (p. 268)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)
Brake functions (p. 403)
Drive mode for driver support The driver can choose different drive modes to determine how driver support shouldmaintain a time interval to the vehicle ahead.
Settings are made using the
DRIVE MODE
controls. Select one of the following:

Pure - Driver support will focus on provid-
ing good fuel economy, which will increase the time interval to the vehicleahead.

Hybrid - Driver support will focus on fol-
lowing the set time interval to the vehicle ahead as smoothly as possible.

Power - Driver support will focus on fol-
lowing the set time interval to the vehicle ahead more exactly, which could meanfaster acceleration and heavier braking.
Related information
Driver support systems (p. 268)
Drive modes (p. 419)
Setting time interval to the vehicle ahead(p. 299)

DRIVER SUPPORT
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325
Driver intervention
Backing up
City Safety is temporarily deactivated when the vehicle is backing up.
Low speed
City Safety is not activated at very low speeds under 4 km/h (3 mph). The system will there-fore not intervene in situations in which yourvehicle is approaching another vehicle veryslowly, such as when parking.
Active driver
Action by the driver always has priority. City Safety will therefore not react or will react at alater stage with a warning or intervention insituations in which the driver is clearly steeringand operating the accelerator pedal, even if acollision is unavoidable. An active and aware driving style may there- fore delay collision warnings and interventionin order to minimize unnecessary warnings.
Other limitations
WARNING
The driver support system only issues a warning for obstacles detected by its radarsensor – thus, a warning may come after adelay or not at all. Never wait for a warning or assistance. Apply the brakes when necessary.
WARNING
Warnings and brake interventions can be triggered late or not at all if the traf-fic situation or external influences pre-vent the camera and radar unit fromproperly detecting pedestrians,cyclists, large animals or vehiclesahead of the vehicle.
To be able to detect vehicles at night,its front and rear lights must work andilluminate clearly.
The camera and radar unit have a lim-ited range for pedestrians and cyclists– the system can provide effectivewarnings and brake interventions if therelative speed is lower than 50 km/h(30 mph). For stationary or slow-mov-ing vehicles, warnings and brake inter-ventions are effective at vehicle speedsof up to 70 km/h (43 mph). Speedreduction for large animals is less than15 km/h (9 mph) and can be achievedat vehicle speeds over 70 km/h(43 mph). At lower speeds, the warn-ing and brake intervention for large ani-mals is less effective.
Warnings for stationary or slow-mov-ing vehicles and large animals can bedisengaged due to darkness or poorvisibility.
Warnings and brake interventions for pedestrians and cyclists are disen-gaged at vehicle speeds over 80 km/h(50 mph).
Do not place, affix or mount anythingon the inside or outside of the wind-shield, or in front of or around the cam-era and radar unit – this could disruptcamera-based functions.
Objects, snow, ice or dirt in the area ofthe camera sensor can reduce thefunction, disengage it completely orgive an improper function response.

DRIVER SUPPORT
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* Option/accessory.333
Cross Traffic Alert *67
Cross Traffic Alert(CTA) is a supplementary driver support system to BLIS 68
that is
intended to help the driver detect vehicles crossing behind the vehicle while backing up. The auto-brake subfunction can help the
driver stop the car if there is a risk of collision with an unobserved vehicle.
Examples of areas in which CTA can help the driver detect obstacles while backing up.
CTA supplements BLIS by detecting traffic crossing from the side, e.g. when backing outof a parking space. CTA is primarily designed to detect vehicles, but in certain cases can also detect pedes-trians or smaller objects such as bicycles. CTA is only active when the vehicle is movingbackward or if reverse gear is engaged. If CTA detects that something is approaching your vehicle from the side:
an audible signal will sound from eitherthe left or right speaker, depending onwhich side of your vehicle the object isapproaching from.
an icon will illuminate in the
Park Assist
System graphic on the screen.
an icon will appear in the Park Assist Cam- era's Top view.
Illuminated CTA icon in the
Park Assist System
graphic on the screen.
If the driver does not pay attention to the warning from CTA and a collision is unavoida- ble, the
auto brake function will intervene to
stop the vehicle and a text will be shown onthe instrument panel to explain why the vehi-cle was braked.
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.
67
Warning for crossing traffic when the vehicle is backing up.
68 Blind Spot Information

DRIVER SUPPORT
* Option/accessory.335
The vehicle is parked very far into a parking space.
In a diagonal parking space, CTA may be completely "blind" on one side of your vehicle.
CTA's blind zone.
CTA's field of vision.
However, as you back your vehicle slowly out of a parking space, CTA's field of vision changes in relation to the obstructing vehicle/object and its blind zone is reduced.
Examples of further limitations

The
auto brake sub-function only detects
vehicles in motion and may therefore not
"see" and brake for e.g. stationary obsta- cles, a cyclists or a pedestrian.
Dirt, ice and snow covering the sensorsmay reduce functionality and prevent thesystem from providing warnings.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information

Cross Traffic Alert
* (p. 333)
Camera/radar sensor limitations (p. 309)

DRIVER SUPPORT
* Option/accessory.
358
Park Assist front, rear and sides *
Park Assist behaves differently depending on which part of the vehicle is approaching anobstacle.
Front camera
The warning signal has a continuous tone when the obstacle is less than approx. 30 cm (1 ft) from thevehicle.
The Park Assist system's front sensors are automatically activated when the engine isstarted. They are active at speedsbelow 10 km/h (6 mph). The distance monitored extends approx. 80 cm (2.5 ft) in front of the vehicle.
NOTE
The Park Assist system is deactivated when the parking brake is used or when P
is selected on vehicles with automatictransmission.
CAUTION
When installing auxiliary lights: Make sure these do not obscure the sensors – theauxiliary lights could be perceived as anobstacle.
Back
The warning signal has a continuous tone when the obstacle is less than approx. 30 cm (1 ft) from thevehicle.
The rear sensors will be activated if the vehicle begins rolling backward or if reverse gear isengaged. The distance monitored extends approx. 1.5 meters (5 ft) behind the vehicle.
Side sensors
The warning signal will begin pulsating rapidly when the obstacle is less than approx. 25 cm (0.8 ft) fromthe vehicle.
Park Assist's side sensors are automatically activated when the engine is started. They areactive at speeds below 10 km/h (6 mph). The distance monitored is approx. 25 cm (0.8 ft) out from the sides. The detection area of the side sensors increa- ses significantly, however, when the steering angle of the front wheel increases and depending on the position of the steeringwheel, obstacles up to approx. 90 cm (3 ft)