2017 VOLVO S90 light

DRIVER SUPPORT
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* Option/accessory.243
Related information
•Driver support systems (p. 242)
• Drive modes
* (p. 374)
Electronic Stability Control (ESC)
Electronic Stability Control (ESC) helps reduce wheel spin, counteract skidding and to generallyhelp improve directional stability.
A pulsating sound will be audi- ble when the system is activelyoperating and is normal. Accel-eration may also be slightlyslower than normal.
WARNING
ESC is a supplementary aid and cannot deal with all situations or road conditions. The driver is always responsible for operating the vehicle in a safe manner in accordancewith current traffic regulations.
ESC consists of the following functions: • Traction control
• Spin control
• Active Yaw Control
• Engine Drag Control
• Trailer Stability Assist
Traction controlThis function is designed to help reduce wheel spin by transferring power from a drive wheel that begins to lose traction to the wheel on the oppo-site side of the vehicle (on the same axle).
Spin controlThis function is designed to help prevent thedrive wheels from spinning while the vehicle isaccelerating.
Active Yaw ControlAt low speeds, this function helps maintain direc-tional stability by braking one or more of thewheels if the vehicle shows a tendency to skid orslide laterally.
Engine Drag Control EDCEDC helps keep the engine running if the wheelsshow a tendency to lock, e.g., when shifting downin the manual shifting mode or while using theengine's braking function on a slippery surface. Ifthe wheels were to lock, the vehicle wouldbecome more difficult to steer.
Trailer Stability Assist
*1TSA helps stabilize a vehicle that is towing atrailer when the vehicle and trailer have begun tosway. This system is automatically deactivated if the driver selects
Sport mode.
1
This function is included if the vehicle is equipped with a Volvo original trailer hitch.

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DRIVER SUPPORT
* Option/accessory.
244
Related information
• Detachable trailer hitch
* (p. 368)
• Driving with a trailer (p. 366)
• Trailer Stability Assist (TSA) (p. 369)
• Electronic Stability Control (ESC) sport mode (p. 244)
• Electronic Stability Control (ESC) symbolsand messages (p. 245)
Electronic Stability Control (ESC) sport mode
ESC is always activated and cannot be switched off.
However, the driver can select Sport mode,
which offers more active driving characteristics. In Sport mode, the engine management system
monitors movement of the accelerator pedal and steering wheel for sportier driving and allowsmore lateral movement of the rear wheels beforeESC is triggered. Under certain circumstances, such as when driv- ing with snow chains, or driving in deep snow orloose sand, it may be advisable to temporarily use Sport mode for maximum tractive force.
If the driver releases pressure on the accelerator pedal, ETC will also activate to help stabilize thevehicle.
Activating/deactivating Sport modeIn the center display's Function view, tap ESC Sport Mode.
The green indicator light in the button will illuminate to showthat the function has been acti-vated or gray when the functionis deactivated.
When Sport mode is activated, this
symbol will illuminate in the instrument panel. It will remain on until the driverdeactivates the function. ETC will also
return to normal mode when the engine is restar-ted.
Related information
• Electronic Stability Control (ESC) (p. 243)

DRIVER SUPPORT
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* Option/accessory.251
Activating/deactivating the Automatic Speed Limiter (ASL) *
The function Automatic Speed Limiter (ASL) is a
supplement to the Speed Limiter (SL) and can be activated/deactivated.
ASL is activated/deactivated in the center display's Functionview.
Activating ASL
With SL activated: 1.
Tap the
Speed Sign Assist button in the
center display's Function view.
> ASL will go into standby mode and a green indicator light in the button will illu- minate. A road sign symbol will be dis-played in center of the speedometer.
2. Press the
button on the left-side steer-
ing wheel keypad.
> ASL will be activated with the vehicle's current speed.
Deactivating ASL
–Tap the Speed Sign Assist button in the
center display's Function view.
> ASL will be deactivated, the indicator will be GRAY and the Speed limiter (SL) will be activated.
WARNING
After switching from ASL to SL, the vehicle will no longer adapt speed to posted speedlimits. It will only limit the vehicle's maximumspeed.
Related information
• Speed limiter (SL)
* (p. 247)
• Automatic Speed Limiter (ASL)
* (p. 249)
Changing tolerance for the Automatic Speed Limiter
Automatic Speed Limiter can be set to different tolerance levels.
Posted speed limit toleranceASL can be set to allow the vehicle to drive above or below the posted speed limit. For exam-ple, if the current posted speed limit is 43 mph(70 km/h), the driver can opt to allow the vehicleto drive at a speed of 47 mph (75 km/h).

DRIVER SUPPORT
* Option/accessory.255
NOTE
Before CC can be activated, the vehicle's speed must be at least 20 mph (30 km/h).This is also the lowest speed that can be set.
Activating CC (putting it in active mode and setting a speed)
–With the symbol displayed (CC is in
standby mode), press the
button (2) on
the left-side steering wheel keypad.
> This puts CC in active mode and will maintain the vehicle's current speed.
Related information
• Cruise Control (CC) (p. 254)
• Switching between Cruise Control and Adaptive Cruise Control
* (p. 258)
• Deactivating/resuming Cruise Control (CC) (p. 256)
• Turning Cruise Control off (p. 257)
Changing Cruise Control speed
Changing a set speed
Function buttons and symbols (generic illustration)
–Change a set speed by pressing the (1)
or — (3) buttons briefly or by pressing and
holding them:
• Press briefly
: changes speed in
+/– 5 mph (+/– 5 km/h) increments. Each press changes the vehicle's speedby +/– 5 mph (+/– 5 km/h).
• Press and hold
: changes the speed
+/– 1 mph (+/– 1 km/h) at a time.Release the button when the set speedindicator (4)/(6) has moved to the desiredspeed.
If speed is increased by pressing the accelerator pedal before the
button is pressed, the vehi-
cle's speed when the button is pressed will become the set speed assuming that the accel- erator pedal is still depressed when the button ispressed. A temporary increase in speed, such as when passing another vehicle, does not affect the CCset speed. The vehicle will return to the set speedwhen the accelerator pedal is released. Alwaysobserve posted speed limits.
Engine braking instead of applying the
brakes
CC regulates speed by applying the brakeslightly. To avoid a loss of speed when drivingdown hills, use the engine braking functioninstead of letting the CC apply the brakes. In thissituation, the driver can temporarily deactivate theCC braking function. To do so:
–Press the accelerator pedal approx. halfway down and release it.
> CC will automatically deactivate the auto- matic brake function and will then only use the engine braking function.
Related information
• Cruise Control (CC) (p. 254)

DRIVER SUPPORT
* Option/accessory.259
Distance Alert *
Distance Alert is a function that alerts the driver if the time interval to the vehicle ahead is too short.
Distance Alert is active at speeds above approxi- mately 20 mph (30 km/h) and only reacts to avehicle ahead that is driving in the same direc-tion. No information is provided for vehicles driv-ing toward you, moving very slowly, or at a stand-still.
NOTE
Distance Alert only monitors distance to the vehicle ahead while Adaptive Cruise Control isin standby mode or off.
WARNING
Distance Alert only indicates the distance to the vehicle ahead. It does not affect thespeed of your vehicle.
Head-up-display *
Distance Alert symbol in the windshield (generic illustra- tion)
In vehicle is equipped with the head-up display *,
the symbol in the windshield will only appear if the distance to the vehicle ahead is shorter than the preset value. However, the
Show Driver
Support In Head-Up Display function has to
be activated in the Settings menu. See the article "Head-up display" for additional information.
NOTE
Strong sunlight, reflections, extreme light con- trasts, the use of sunglasses, or if the driver isnot looking straight ahead may make the vis-ual warning signal in the windshield difficult tosee.
Related information
• Distance Alert
* limitations (p. 260)
• Using Distance Alert
* (p. 260)
• Head-up display (HUD)
* (p. 116)
• Adaptive Cruise Control (ACC)
* (p. 261)

DRIVER SUPPORT
* Option/accessory.
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Using Distance Alert *
Distance Alert is used as follows:
OperationPull down the center display's Top view and select Settingsfollowed by Distance alert.
Tap to turn the function On or Off.
Setting a time interval
Controls for setting a time interval
Reduce the time interval
Increase the time interval
Distance/time indicator
–Press button (1) or (2) on the left-side steer- ing wheel keypad to reduce or increase thetime interval to the vehicle ahead.
> The indicator (3) shows the current time interval.
Different time intervals to the vehicle ahead can be selectedand are shown in the instru-ment panel as 1–5 horizontalbars. The greater the number ofbars, the longer the time inter-val.
One bar between the vehicles represents a timeinterval of approximately 1 second; 5 bars isapproximately 3 seconds. The same symbol appears if Adaptive Cruise Control is activated.
NOTE
• The greater the vehicles' speed, the greater the
distance between them for a
set time interval.
• The set time interval is also used by Adaptive Cruise Control
*.
• Only use time intervals permitted by local traffic regulations.
Related information
•
Distance Alert
* (p. 259)
Distance Alert * limitations
Distance Alert uses the same radar sensor as Adaptive Cruise Control * and has several limita-
tions.
WARNING
• The radar sensor has a limited field of vision. In some situations it may detect avehicle later than expected or not detectother vehicles at all.
• The radar sensor cannot cover all drivingsituations and traffic, weather and roadconditions.
• The driver is responsible for maintaining asafe distance and speed and must inter-vene if the various driver support systemsdo not maintain a suitable speed or suita-ble distance to the vehicle ahead.
• Maintenance of radar sensor componentsmay only be performed by a trained andqualified Volvo technician.
• Strong sunlight, reflections from the roadsurface, strong lighting contrasts or usingsunglasses may make the warning light inthe windshield difficult to see.

DRIVER SUPPORT
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* Option/accessory.261
WARNING
•Poor weather or winding roads can affect the radar sensor's capacity to detect vehi-cles ahead.
• A vehicle's size (e.g., a motorcycle) canalso affect the radar sensor's capacity todetect another vehicle. This may result inthe warning light illuminating at a shorterdistance than the one that has been setor not illuminating at all.
• High speeds may also result in the warn-ing light illuminating at a shorter distancethan the one that has been set due tolimitations in the radar sensor's range.
For additional information, see also the article"Radar sensor limitations."
Related information
• Radar sensor limitations (p. 289)
• Distance Alert
* (p. 259)
Adaptive Cruise Control (ACC) *
ACC is an optional system designed to assist the driver by maintaining a set speed or a settime interval to the vehicle ahead.
ACC helps provide more relaxed driving on long trips on highways or other major roads in a rela-tively even flow of traffic.
The camera and radar sensor monitor the distance to the vehicle ahead (generic illustration - certain detailsmay vary from model to model)
The driver sets that desired speed and time inter- val to the vehicle ahead. When the camera andradar sensor detects a slower moving vehicleahead, your vehicle's speed is automaticallyadapted. When there are no longer slower mov-ing vehicles ahead, your vehicle will accelerate toresume the set speed. ACC is designed to follow a vehicle ahead in the same lane and maintain a time interval to that vehicle set by the driver. If the radar sensor doesnot detect a vehicle ahead, ACC will insteadmaintain the speed set by the driver. ACC is designed to smoothly regulate speed. However, the driver must apply the brakes in sit-uations that require immediate braking such aswhen there are great differences in speedbetween vehicles, or if the vehicle ahead brakessuddenly. Due to limitations in the radar sensor,braking may occur unexpectedly or not at all. Adaptive Cruise Control can follow another vehi- cle from a standstill up to 125 mph (200 km/h).Always observe posted speed limits. The driver can also toggle between ACC and Cruise Control (CC) – see the article "Switchingbetween Cruise Control and Adaptive CruiseControl".

DRIVER SUPPORT
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* Option/accessory.263
Instrument panel
Speed indicators
Set speed
Speed of the vehicle ahead
The current speed of your vehicle
See the article "Adaptive cruise control symbols and messages" for examples of different combi-nations of symbols, depending on the traffic sit-uation.
Collision warning
Audible/visual warning signals
Audible warning signal
Visual warning symbol
Monitoring distance with the camera and radar sensor
Adaptive Cruise Control can exert brake forcethat is equivalent to approximately 40% of thevehicle's total braking capacity. In situations requiring more brake force than ACC can provide and if the driver does not applythe brakes, an audible signal from the City Safetysystem will sound and warning light will illuminatein the windshield to alert the driver to react.
WARNING
Adaptive Cruise Control only warns of vehicles detected by the radar sensor. In some casesthere may be no warning or the warning maybe delayed. The driver should always apply thebrakes when necessary.
Head-up-display *
A flashing light alerts the driver
A flashing icon will appear in the head-up display to alert the driver of a collision risk.
NOTE
Strong sunlight, reflections, extreme light con- trasts, the use of sunglasses, or if the driver isnot looking straight ahead may make the vis-ual warning signal in the windshield difficult tosee.