2020 VOLVO S90 TWIN ENGINE cruise control

DRIVER SUPPORT
* Option/accessory.271
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. 270)
Electronic Stability Control (p. 269)

DRIVER SUPPORT
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* Option/accessory.273
Distance Alert *7
The Distance Alert function can help the driver become aware if the time interval tothe vehicle in front is too short. The vehicle must be equipped with a head-up display * in
order to display Distance Alert.
Symbol for Distance Alert on the windshield with head-up display
In vehicles equipped with a head-up display, a symbol will be displayed on the windshield aslong as the time interval to the vehicle aheadis shorter than the set time interval. However, the
Show Driver Support function must be
activated under Settings in the vehicle's menu system. Distance Alert is active at speeds above 30 km/h (20 mph) and only reacts for vehicles ahead moving in the same directionas your vehicle. No distance information isprovided for oncoming, slow-moving or sta-tionary vehicles.
NOTE
Visual warnings on the windshield may be difficult to notice in cases of strong sun-light, reflections, extreme light contrasts,or if the driver is wearing sunglasses or isnot looking straight ahead.
NOTE
Distance Alert is deactivated while Adap- tive Cruise Control
* or Pilot Assist * is
active.
WARNING
Distance Alert only reacts of the time inter- val to the vehicle ahead is shorter than thepreset value – vehicle speed is not affec-ted.
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.
Related information
Activating or deactivating Distance Alert(p. 274)
Distance Alert limitations (p. 274)
Setting time interval to the vehicle ahead(p. 299)
7
Distance Alert

DRIVER SUPPORT
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* Option/accessory.275
Cruise control
Cruise Control (CC 10
) can help the driver
maintain an even speed to provide a more relaxing driving experience on highways andlong, straight roads with even traffic flows.
Overview
Function buttons and symbols.
: Activates Cruise Control from
standby mode and resumes the set speed
: Increases the set speed
: From standby mode – activates
Cruise Control and sets the current speed
: From active mode – deactivates/
puts Cruise Control in standby mode
: Reduces the set speed
Marker for set speed
The vehicle's current speed
Set speed
NOTE
In vehicles equipped with Adaptive Cruise Control *(ACC 11
), it is possible to switch
between Cruise Control and Adaptive Cruise Control.
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.
Using engine braking instead of applying the brakes
Cruise Control regulates speed by lightly applying the brakes. On downgrades, it cansometimes be desirable to roll a bit faster andlet speed be reduced instead by engine brak-ing alone. The driver can temporarily disen-gage the Cruise Control braking function.
10
Cruise Control
11 Adaptive Cruise Control

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DRIVER SUPPORT
* Option/accessory.
276 To disengage CC:
–Press the accelerator pedal about halfway down and then release it.
> Cruise Control will automatically disen-
gage the automatic brake function and speed will only be reduced using theengine braking function.
Related information
Driver support systems (p. 268)
Selecting and activating cruise control(p. 276)
Deactivating cruise control (p. 277)
Cruise control standby mode (p. 277)
Adjusting set speed for driver support(p. 298)
Switching between cruise control and Adaptive Cruise Control
* in the center dis-
play (p. 284)
Selecting and activating cruise control The Cruise Control (CC 12
) function must be
selected and activated in order to regulate speed.
In order to start Cruise Control from standby mode, the vehicle's current speed must be30 km/h (20 mph) or higher.
1. Press the ◀ (1) or ▶ (3) button on the
steering wheel keypad and scroll to the cruise control symbol
(4).
> Gray symbol – cruise control is in standby mode. 2.
When cruise control is selected, press
(2) on the steering wheel keypad to acti- vate.
> White symbol – cruise control starts
and the current speed is stored as the maximum speed. The lowest speedthat can be set is 30 km/h (20 mph).
Reactivating cruise control to the last stored speed
–When cruise control is selected, press on the steering wheel keypad to activate.
> The Cruise Control marking in theinstrument panel will change from GRAY to WHITE and the vehicle willthen return to the most recently setspeed.
WARNING
A noticeable increase in speed may follow when the speed is resumed with the
steering wheel button.
Related information
Cruise control (p. 275)
Deactivating cruise control (p. 277)
Cruise control standby mode (p. 277)
12
Cruise Control

DRIVER SUPPORT
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* Option/accessory.277
Deactivating cruise control
Cruise control (CC 13
) can be deactivated and
switched off.
1. Press the button on the steering
wheel (2).
> The symbol and markings turn gray – cruise control goes into standby mode.
2. Press the ◀ (1) or ▶ (3) buttons on the
steering wheel to select another function.
> The cruise control symbol and marking (4) in the instrument panel will go out and the stored maximum speed will beerased.
Related information
Cruise control (p. 275)
Switching between cruise control and Adaptive Cruise Control
* in the center dis-
play (p. 284)
Selecting and activating cruise control (p. 276)
Cruise control standby mode (p. 277)
Cruise control standby mode Cruise control (CC 14
) can be deactivated and
put in standby mode. This may happen auto- matically 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, cruise control will notregulate speed.
Standby mode due to action by the
driver
Cruise control will be deactivated and put instandby mode if any of the following occurs:
The brakes are applied.
The gear selector is moved to
N.
The vehicle is driven faster than the setspeed for more than 1 minute.
The driver must then control the vehicle'sspeed. Temporarily increasing speed using the accel- erator pedal, e.g. when passing another vehi-cle, will not affect the setting. The vehicle willreturn to the set speed when the acceleratorpedal is released.
13 Cruise Control
14 Cruise Control

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DRIVER SUPPORT
* Option/accessory.
278
Automatic standby modeAdaptive Cruise Control may go into standby mode if:
the wheels lose traction
the engine speed (rpm) is too low/high
the temperature in the brake systembecomes too high
the vehicle's speed goes below 30 km/h(20 mph).
The driver must then control the vehicle'sspeed.
Related information
Cruise control (p. 275)
Selecting and activating cruise control(p. 276)
Deactivating cruise control (p. 277)
Adaptive Cruise Control
*15
Adaptive Cruise Control (ACC 16
) helps the
driver maintain a constant speed with a set time interval to the vehicle ahead.
Adaptive Cruise Control can help provide a more relaxed driving experience on long tripson highways or long, straight roads with eventraffic flows.
The camera/radar sensor measures the distance to the vehicle ahead.
The driver sets a speed and a time interval to the vehicle ahead. If the camera/radar sensordetects a slower-moving vehicle ahead, yourvehicle's speed will be automatically adaptedaccording to the set time interval to that vehi-cle. When there are no longer slower-moving vehicles ahead, the vehicle will return to theset speed. If the Curve Speed Assist (CSA)
* function is
activated, it may also affect the vehicle's speed.
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.
Adaptive Cruise Control regulates speed byaccelerating and braking. It is normal for the
15 Depending on market, this function can be either standard or optional.
16 Adaptive Cruise Control

DRIVER SUPPORT
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* Option/accessory.279
brakes to emit a slight sound when they are being used to adjust speed. Adaptive Cruise Control always attempts to regulate speed smoothly. The driver mustapply the brakes in situations requiring imme-diate braking. For example, when there aregreat differences in speed between vehicles orif the vehicle ahead brakes suddenly. Due tolimitations in the radar sensor, braking mayoccur unexpectedly or not at all. Adaptive Cruise Control is designed to follow a vehicle ahead in the same lane and maintaina time interval to that vehicle set by the driver.If the radar sensor does not detect a vehicleahead, it will instead maintain the speed setby the driver. This will also happen if the speedof the vehicle ahead exceeds the set speed foryour vehicle.
CAUTION
Only a workshop may perform mainte- nance on driver support components – anauthorized Volvo workshop is recom-mended.
Related information

Driver support systems (p. 268)
Adaptive Cruise Control
* controls and dis-
play (p. 279)
Selecting and activating Adaptive Cruise Control
* (p. 280)
Adaptive Cruise Control
* limitations
(p. 283)
Symbols and messages for AdaptiveCruise Control
* (p. 285)
Collision risk warning from driver support (p. 296)
Setting time interval to the vehicle ahead(p. 299)
Adjusting set speed for driver support(p. 298)
Auto-hold braking with driver support(p. 300)
Switching target vehicles with driver sup-port (p. 297)
Passing assistance (p. 304)
Adaptive Cruise Control
*17
controls
and display A summary of how Adaptive Cruise Control (ACC 18
) is controlled using the left-side steer-
ing wheel keypad and how the function is shown in the display.
: From standby mode - activates and
sets the current speed
: From active mode - deactivates/
puts in standby mode
: Activates the function from standby
mode and resumes the set speed
: Increases the set speed
: Reduces the set speed
17 Depending on market, this function can be either standard or optional.

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DRIVER SUPPORT
* Option/accessory.
280
Increases the time interval to the vehicle ahead
Reduces the time interval to the vehicle ahead
Target vehicle indicator: the function has detected and is following a target vehicleusing the set time interval
Symbol for time interval to the vehicle ahead
Instrument panel
Speed indicators.
Set speed.
Speed of the vehicle ahead.
The current speed of your vehicle.
Related information
Adaptive Cruise Control
* (p. 278)
Adaptive Cruise Control
* limitations
(p. 283)
Selecting and activating Adaptive Cruise Control *19
Adaptive Cruise Control (ACC 20
) must first be
selected and then activated before it can reg- ulate speed and distance.
To start the function:
The driver's seat belt must be buckled and the driver's door must be closed.
There must be a vehicle ahead (targetvehicle) within a reasonable distance or
18
Adaptive Cruise Control
19 Depending on market, this function can be either standard or optional.
20 Adaptive Cruise Control