RWhen activelychanging lane without switch‐ing onthe turn signal.
&WARNINGRisk of accident ifActiveSteering Assist unexpectedlystops func‐tioning
Ifthe system limitations ofActiveSteeringAssist arereachedthere is no guaranteethatthe system willremain active or willkeepthevehicle in lane.
#Alwayskeepyour hands onthesteeringwheel and observethe traffic carefully.
#Alwayssteerthevehicle paying atten‐tiontotraffic conditions.
&WARNINGRisk of accident ifActiveSteering Assist unexpectedly intervenes
A malfunction inthe detection of lane mark‐ings and objects can occur.
This could cause unexpectedsteering inter‐vention.
#Steer accordingtotraffic conditions.
ActivatingActiveSteering Assist
RequirementsRESP®must be activated, but not intervening.
RActive Distance AssistDISTRONIC is activa‐ted.
#If indicator lamp1is off: press button2.
Function ofActive Lane Change Assist
%Theavailability ofthefollowing function iscountry-dependent.
Active Lane Change Assistsupportsthe driverwhenchanging lanesbyapplyingsteeringtorqueifthe driver operates a turn signal.
Assistance whenchanging lanes is provided if allthefollowing conditions are met:
RYou are driving on a freeway orroad withmultiple lanes inthe direction of travel.
RThe neighboring lane is separatedbya bro‐ken lane marking.
RNovehicle is detected inthe adjacent lane.
RThe driven speed is between 50mph(80 km/h) and110mph (180 km/h).
RActive Lane Change Assistis switched on inthe multimedia system.
RActiveSteering Assist is switched on andactive.
210Driving and parking
If novehicle is detected inthe adjacent lane anda lanechange is permitted,thesteering wheelsymbol andthe arroware shown in green2.TheLane Change to the Leftmessage appears,forexample. IfActive Lane Change Assisthasbeen activated withthe turn signal indicator buta lanechange is not immediately possible,thesteering wheel symbolremains green andthearrowappearsgray1. Whenthe lanechangesupportstarts,the turn signal indicator is auto‐matically activated.
If a lanechange is not possible,the arrow fadesout after afew seconds and a new lanechangemust be initiated. An immediate lanechange is
only possible on freeway sections without speedlimits.
Ifthe system is impaired,Active Lane ChangeAssistmay be canceled. If it is canceled,theLane Change Canceledmessage appears inthemultifunction display and awarningtone sounds.
&WARNINGRisk of accident fromchang‐ing lanetoan occupied adjacent lane
Lane ChangeAssistcannot alwaysdetectclearlyifthe adjacent lane is free.
The lanechange might be initiated althoughthe adjacent lane is not free.
#Beforechanging lanes, make surethatthe neighboring lane is free andthere isno dangerto otherroad users.
#Monitorthe lanechange.
&WARNINGRisk of accident if LaneChange Assistunexpectedlystops func‐tioning
Ifthe system limitationsfor Lane ChangeAssist havebeenreached,there is no guar‐anteethatthe system willremain active.
Lane Change Assist cannotthen assistyoubyapplyingsteeringtorques.
#Always monitorthe lanechange andkeepyour hands onthesteering wheel.Observethe traffic conditions andsteerand/or brake if necessary.
System limitationsThe system limitations ofActiveSteering AssistapplytoActive Lane Change Assist(→page 208).
The system may also be impaired or may notfunction inthefollowing situations:
RThe sensors intherear bumper are dirty,damaged or covered,for instanceby asticker or ice and snow.
RTheexterior lighting is malfunctioning.
Driving and parking211