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Related information
•Detachable key blade – unlocking (p. 152)
• Detachable key blade – general informa- tion (p. 151)
• Starting the engine (p. 252)
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D R I V E R S U P P O R T
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* Option/accessory, for more information, see Introduction.169
Active chassis* (Four C)
Active chassis, Four-C (Continuously Controlled Chassis Concept), regulates thecharacteristics of the shock absorbers so thatthe vehicle's driving characteristics can beadjusted. There are three settings: Comfort,Sport and Advanced.
Operation
Chassis settings
Use the buttons in the center console to change setting. The setting in use when theengine is switched off is activated the nexttime the engine is started.
ComfortComfort mode offers a somewhat softer ride and the transmission shifts gears at lowerrpm. This mode is particularly suitable forlong-distance highway driving. The indicatorlight in the button will be on when this modeis selected.
SportIn this mode, the vehicle's body sway is reduced during cornering and steeringresponse is more immediate. The transmis-sion shifts up at higher rpm for sportier driv-ing. The indicator light in the button will be onto indicate that Sport mode has beenselected.
AdvancedIn this mode, body sway in curves is minimal and steering response is very direct. Gearshifting is done at high rpm in each gear fordynamic and active driving.
Related information
• Adjustable steering force* (p. 174)
Stability system – introduction
The Electronic Stability Control (ESC) system consists of a number of functions designed tohelp reduce wheel spin, counteract skiddingand to generally help improve directional sta-bility.
A pulsating sound will be audiblewhen the system is actively operat-ing and is normal. Acceleration willalso be slightly slower than normal.
WARNING
ESC is a supplementary aid and cannot deal with all situations or road conditions. The driver is always responsible for oper- ating the vehicle in a safe manner inaccordance with current traffic regulations.
ESC consists of the following functions:
• Traction control
• Spin control
• Active Yaw Control
• Engine Drag Control
• Corner Traction Control
Traction Control (TC)This function is designed to help reduce wheel spin at low speeds by transferringpower from a drive wheel that begins to losetraction to the wheel on the opposite side ofthe vehicle (on the same axle).
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Spin Control (SC)The SC function is designed to help prevent the drive wheels from spinning while the vehi-cle is accelerating.
Active Yaw Control (AYC)This function helps maintain directional stabil- ity, for example when cornering, by brakingone or more of the wheels if the vehicleshows a tendency to skid or slide laterally.
Corner Traction Control (CTC)CTC compensates for understeering and helps provide additional stability when accel-erating through a curve by preventing theinside wheel from spinning. This is particularlyuseful when accelerating on a curving high-way on-ramp. CTC is most effective if the stability system's Sport mode is selected. See the section
about Sport mode.
Engine Drag Control (EDC)EDC helps keep the engine running if the wheels show a tendency to lock, e.g., whenshifting down in the Geartronic manual shift-ing mode or while using the engine's brakingfunction on a slippery surface. If the enginewere to stop, power steering would not func-tion, making the vehicle more difficult tosteer.
Trailer Stability Assist (TSA)The TSA helps stabilize a vehicle that is tow- ing a trailer when the vehicle and trailer have begun to sway. See Trailer Stability Assist(TSA) (p. 288) for more information. This system is automatically deactivated if the driver selects
Sport mode.
Related information
•Stability system – operation (p. 170)
• Stability system – symbols and messages (p. 172)
• Trailer Stability Assist (TSA) (p. 288)
Stability system – operation
Operation
Sport modeThe stability system is always activated and cannot be switched off.
However, the driver canselect Sport mode, which
offers more active drivingcharacteristics. Sport mode can be selected
in the MY CAR menus, see
My Car – introduction (p. 74).
In Sport mode, the engine management sys-
tem monitors movement of the accelerator pedal and steering wheel for sportier drivingby allowing more lateral movement of the rearwheels before ESC is activated. Under certain circumstances, such as when driving with snow chains, or driving in deepsnow or loose sand, it may be advisable totemporarily use Sport mode for maximum
tractive force. If the driver releases pressure on the acceler- ator pedal, ETC will also activate to help sta-bilize the vehicle. To switch to Sport mode:
Sport mode remains active until the driver
switches it off in the menu or until the engine is switched off. ETC will return to normalmode when the engine is restarted.
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Related information
•Stability system – introduction (p. 169)
• Stability system – symbols and messages (p. 172)
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Stability system – symbols and messages
Symbols and messages in the main
instrument panel
A text message can be erased by pressing briefly the OK button on the turn signal lever.
SymbolMessageDescription
ESC Temporarily OFFThe ESC system function has been temporarily reduced due to high brake disc temperature. The function reactivates automatically when the brakes have cooled.
ESC Service requiredThe ESC system is not functioning properly. • Stop the vehicle in a safe place, turn off the engine and restart it.
• If the message is still displayed when the engine has restarted, drive to an authorized Volvo work- shop to have the system inspected.
and
"Message"Read the message in the instrument panel.
Steady glow for 2 seconds.The system is performing a self-diagnostic test.
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SymbolMessageDescription
Flashing symbol.ESC is actively functioning to help counteract wheel spin and/or a skid.
Steady glow.Sport mode has been activated.
Please note that ESC is not deactivated at this time but its functionality is reduced.
WARNING
The stability system is intended to help improve driving safety. It supplements, butcan never replace, the driver's judgmentand responsibility when operating the vehi-cle. Speed and driving style should alwaysbe adapted to traffic and road conditions.
Related information
• Stability system – introduction (p. 169)
• Stability system – operation (p. 170)
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174* Option/accessory, for more information, see Introduction.
Adjustable steering force*
Steering force increases with the speed of the vehicle to give the driver enhanced sense ofcontrol and stability. At low speed the vehicleis easy to steer in order to facilitate parking,etc.
Adjustable steering force*Steering force can be changed under MY
CAR
Car settingsSteering wheel
force
. Select Low, Medium or High. For a
description of the menu system, My Car – introduction (p. 74).
NOTE
This steering force level menu function cannot be accessed when the vehicle is inmotion.
NOTE
In certain situations, the power steering may become too warm and will have to betemporarily cooled down. While this ishappening, the power steering effect willbe reduced slightly and somewhat moreeffort may be required to turn the steeringwheel. If this occurs, a message will be displayed in the instrument panel.
Related information
• Active chassis* (Four C) (p. 169)
Road Sign Information (RSI)* – introduction
RSI is a feature that helps the driver see road signs with the posted speed limit.
Introduction
Examples of readable road signs If the vehicle passes a sign showing the speed limit, this will be displayed in the centerconsole.
WARNING
RSI does not function in all situations and is only intended to provide supplementaryinformation. The driver is always responsible for oper- ating the vehicle safely.
Related information
•Road Sign Information (RSI) – operation (p. 175)
• Road Sign Information (RSI) – limitations(p. 175)