2020 VOLVO S90 ECO mode

||
DRIVER SUPPORT
* Option/accessory.
276
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. 273)
Selecting and activating cruise control(p. 274)
Deactivating cruise control (p. 275)
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
}}
* Option/accessory.277
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. 266)
Adaptive Cruise Control
* controls and dis-
play (p. 277)
Selecting and activating Adaptive Cruise Control
* (p. 278)
Adaptive Cruise Control
* limitations
(p. 281)
Symbols and messages for AdaptiveCruise Control
* (p. 283)
Collision risk warning from driver support (p. 294)
Setting time interval to the vehicle ahead(p. 297)
Adjusting set speed for driver support(p. 296)
Auto-hold braking with driver support(p. 298)
Switching target vehicles with driver sup-port (p. 295)
Passing assistance (p. 302)
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.

||
DRIVER SUPPORT
* Option/accessory.
280
WARNING
If Adaptive Cruise Control is in standby mode, the driver must intervene andregulate both speed and distance tothe vehicle ahead.
If the vehicle comes too close to a vehi-cle ahead when Adaptive Cruise Con-trol is in standby mode, the driver canbe warned of the short distance by the Distance Alert
* function.
Related information
Adaptive Cruise Control
* (p. 276)
Selecting and activating Adaptive CruiseControl
* (p. 278)
Switching between cruise control andAdaptive Cruise Control
* in the center dis-
play (p. 282)
Adaptive Cruise Control
* limitations
(p. 281)
Adaptive Cruise Control *23
standby
mode Adaptive Cruise Control (ACC 24
) can be deac-
tivated and put in standby mode. This may happen automatically or be due to driverintervention.
Standby mode means that the function is selected in the instrument panel but not acti-vated. In standby mode, Adaptive Cruise Con-trol will not regulate speed or distance to thevehicle ahead.
Standby mode due to action by the
driver
Adaptive Cruise Control will be deactivatedand put in standby mode if any of the follow-ing 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.
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.
WARNING
If Adaptive Cruise Control is in standby mode, the driver must intervene andregulate both speed and distance tothe vehicle ahead.
If the vehicle comes too close to a vehi-cle ahead when Adaptive Cruise Con-trol is in standby mode, the driver canbe warned of the short distance by the Distance Alert
* function.
Automatic standby modeAdaptive Cruise Control is dependent on other systems, such as Electronic Stability Control (ESC 25
). If any of these other systems stops
working, Adaptive Cruise Control will be auto- matically deactivated.
21 Depending on market, this function can be either standard or optional.
22 Adaptive Cruise Control
23 Depending on market, this function can be either standard or optional.
24 Adaptive Cruise Control
25 Electronic Stability Control

||
DRIVER SUPPORT
* Option/accessory.
284
Symbol Message Meaning
The symbol is WHITE. The vehicle is maintaining the stored speed.
Adaptive Cruise Contr. Unavailable
The symbol is GRAY. Adaptive Cruise Control is in standby mode.
Adaptive Cruise Contr. Service required
The symbol is GRAY.The system is not functioning as intended. Contact a workshop
‒ an authorized Volvo work-
shop is recommended.
Windscreen sensor Sensor blocked, see Owner's manualClean the windshield in front of the camera and radar sensors.
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
Adaptive Cruise Control
* (p. 276)

DRIVER SUPPORT
}}
* Option/accessory.287
If Pilot Assist still does not detect the driver's hands on the steering wheel after a few moreseconds have passed, the audible signal willbecome intense and the steering function willswitch off. Pilot Assist must then be reactiva- ted by pressing the
button on the steering
wheel.
Related information
Driver support systems (p. 266)
Selecting and activating Pilot Assist
*
(p. 288)
Pilot Assist
* limitations (p. 291)
Pilot Assist
* controls and display (p. 287)
Pilot Assist
* symbols and messages
(p. 293)
Adjusting set speed for driver support (p. 296)
Setting time interval to the vehicle ahead(p. 297)
Switching target vehicles with driver sup-port (p. 295)
Collision risk warning from driver support(p. 294)
Auto-hold braking with driver support(p. 298)
Passing assistance (p. 302)
Pilot Assist
*35
controls and display
A summary of how Pilot Assist is controlled using the right-side steering wheel keypadand how the function is shown in the display.
Controls
Function buttons and symbols.
▶ : Switches from Adaptive Cruise Control *
to Pilot Assist
: From standby mode - activates Pilot
Assist and sets the current speed
: From active mode - deactivates/
puts Pilot Assist in standby mode
: Activates Pilot Assist from standby
mode and resumes the set speed and time interval
: Increases the set speed
: Reduces the set speed
Increases the time interval to the vehicle ahead
Reduces the time interval to the vehicle ahead
◀ : Switches from Pilot Assist to Adaptive
Cruise Control
Function symbol
Symbols for target vehicle
Symbol for time interval to the vehicle ahead
Symbol for activated/deactivated steering assistance
35 Depending on market, this function can be either standard or optional.

DRIVER SUPPORT
* Option/accessory.289
NOTE
Note that the Pilot Assist function only works when the driver's hands are on thesteering wheel.
Additional markings in the instrument panel
Pilot Assist will only regulate the time interval to the vehi-cle ahead when the distancesymbol shows a vehicle (1)over the steering wheel sym-bol.
Pilot Assist's steering assistance is only activewhen the steering wheel symbol (2) changesfrom GRAY to GREEN.
A speed interval will be marked at the same time. The higher speed is the stored speed for your vehicleand the lower speed is thespeed of the vehicle ahead
(target vehicle).
Related information
Pilot Assist
* (p. 285)
Deactivating Pilot Assist
* (p. 289)
Pilot Assist
* limitations (p. 291)
Deactivating Pilot Assist *37
Pilot Assist can be deactivated and switched off.
1. Press the button on the steering
wheel (2).
> The symbol and markings turn gray – Pilot Assist goes into standby mode. The time interval indicator light and anysymbols for the target vehicle will goout.
2. Press the ◀ (1) or ▶ (3) buttons on the
steering wheel to select another function.
> The Pilot Assist symbol and marking (4) in the instrument panel will go out and the stored maximum speed will beerased.
WARNING
With Pilot Assist in standby mode, the driver must intervene and steer andregulate both speed and distance tothe vehicle ahead.
If the vehicle comes too close to a vehi-cle ahead when Pilot Assist is instandby mode, the driver is insteadwarned of the short distance by the Distance Alert
* function.
Related information
Adaptive Cruise Control
* (p. 276)
Selecting and activating Adaptive CruiseControl
* (p. 278)
Switching between cruise control andAdaptive Cruise Control
* in the center dis-
play (p. 282)
Adaptive Cruise Control
* limitations
(p. 281)
Temporarily deactivating steering assis-tance with Pilot Assist
* (p. 291)
37
Depending on market, this function can be either standard or optional.

||
DRIVER SUPPORT
* Option/accessory.
292
tively, they may be detected incorrectly as lane markings, with a subsequentrisk of contact between the vehicle andsuch obstacles. The driver is responsi-ble for ensuring that the vehicle main-tains a suitable distance from suchobstacles.
The camera and radar sensors do nothave the capacity to detect all oncom-ing objects and obstacles in trafficenvironments, e.g. potholes, stationaryobstacles or objects that completely orpartially block the route.
Pilot Assist does not "see" pedestrians,animals, etc.
The recommended steering input islimited in force, which means that itcannot always help the driver to steerand keep the vehicle within the lane.
In vehicles equipped with Sensus Navigation
*, the function is able to use
information from map data, which could cause variations in performance.
Pilot Assist will be switched off if thespeed-dependent power steeringwheel resistance is working at reducedpower, e.g. during cooling due to over-heating.WARNING
Pilot Assist should only be used if there are clear lane lines painted on each side of thelane. All other use will increase the risk ofcontact with nearby obstacles that cannotbe detected by the functions.
WARNING
This is not a collision avoidance sys- tem. The driver is always responsibleand must intervene if the system failsto detect a vehicle ahead.
The function does not brake for peopleor animals and does not brake for smallvehicles, such as bikes and motorcy-cles. Similarly, it does not brake for lowtrailers, oncoming, slow-moving or sta-tionary vehicles and objects.
Do not use the function in demandingsituations, such as in city traffic, atintersections, on slippery surfaces,with a lot of water or slush on the road,in heavy rain/snow, in poor visibility, onwinding roads, or on on/off ramps.
The driver can always correct or adjust steer-ing assistance provided by Pilot Assist by turn-ing the steering wheel to the desired position.
Steep roads and/or heavy loadsPilot Assist is primarily intended to be drivenon flat roads. The function may not be able tomaintain the correct time interval to the vehi-cle ahead when driving down steep hills. Thedriver should be extra attentive and preparedto apply the brakes.
Other limitationsThe Off Road drive mode cannot be selected
when Pilot Assist is activated.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
Pilot Assist
* (p. 285)
Camera/radar sensor limitations (p. 307)
Speed-dependent steering wheel resis- tance (p. 266)
Drive modes
* (p. 399)
41
Depending on market, this function can be either standard or optional.

||
DRIVER SUPPORT
* Option/accessory.
298
Related information
Driver support systems (p. 266)
Adaptive Cruise Control
* (p. 276)
Pilot Assist
* (p. 285)
Distance Alert
* (p. 271)
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.