ROnly depressthe accelera tor pedal as far as
is necessar y.
RAdapt your drivin gst yle to suit the cur rent
ro ad and weather conditions.
Deactivate ESP
®in thefo llowing situations to
impr ove traction:
Rwhen using snow chains
Rin deep snow
Ron sand or gr avel
% Spinning the wheels results in a cutting
action which pr ovides better grip. ESP
®is deactivated if
theå ESP®OFFwarn‐
ing lamp lights up continuously in the instrument
clus ter.
If th e ESP
®÷ warning lamp lights up continu‐
ousl y,ESP®is not available due toa malfunction.
Observ e any information which may be displa yed
in the instrument clus ter:
RWa rning and indicator lamps (→page 429)
RDisplay messages (→page 384)
ETS/4ETS (Electronic Traction Sy stem)
ETS/4E TStraction control is pa rtof ESP
®. ETS/4ETS can impr
ovetheve hicle's traction by
inter vening in thefo llowing ways:
RThe drive wheels are braked individually if
they spin.
RMore drive torque is transferred tothe wheel
or wheels with traction.
Influence of drive prog rams on ESP
®
The drive prog rams enable ESP®to adapt todif‐
fe re nt we ather and road conditions as well as
th e driver's prefer red driving style. Youcan
selec
t th e drive prog rams using theDY NA MIC
SELECT switch.
Driving and parking 15
3
RIt uses as arefere nce theve hicle in front or
th e lane markings, depending on the driven
speed.
RSt eering Pilot requiresyou as the driver, to
ke ep your hands onthesteering wheel at all
times so that you are abletointer vene at any
time tocor rect the course of theve hicle and
ke ep it in lane.
RSteering Pilot can be overridden at any time
by steering theve hicle yourself.
RIfth e sy stem de tects that there are no lane
markings, it uses theve hicle ahead as a ref‐
erence up toa speed of 80 mph (130 km/h).
RWhen the sy stem is actively steering, the
è symbol is shown in green in the multi‐
function displa y.
Sy stem limitations of Steering Pilot
St eering Pilot has a limited steering torque for
lateral guidance. In some cases, thesteering
inter vention is not suff icienttokeep theve hicle
in the lane.
If de tection of lane markings and vehicles ahead
is impaired, Steering Pilot switches topassive
mode. The sy stem pr ovides no support in this case. During
the transition from the active to
passive status, theè symbol is shown as
enlar ged and flashes yello w. Once the sy stem is
passive theè symbol is shown as gr ayinthe
multifunction displa y.
The sy stem may be impaired or may not function
in thefo llowin
g ins
tances:
RIfth ere is poor visibility, e.g. due toinsuf fi‐
cient illumination of thero ad, or due tosno w,
ra in, fog or spr ay.
RIfth ere is glare, e.g. from oncoming traf fic,
dire ct sunlight or reflection from other vehi‐
cles (e.g. if thero ad is wet).
RIfth e windshield is dirty, fogged up, damaged
or co vered, for ins tance byast icke r,in the
vicinity of the camera.
RIf no, or se veral, unclear lane markings are
present for one lane, e.g. in a construction
area.
RIf th e lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w.
RThe distance totheve hicle in front is too
small and the lane markings thus cannot be
de tected.
RIfth e lane markings change quickl y,e.g.
lanes branch off, cross one ano ther or
mer ge.
RThe road is nar rowand winding.
RIfth ere are highly variable shade conditions
on thero ad.
RIfth ere are obs tacles such as traffic guid‐
ance posts on the lane or projecting out into
th e lane.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
ROn very sharp bends.
RWhen towing a trailer.
RIfyo u act ively change lane without switch ing
on the turn signal indicator.
RIfyo u switch onthe turn signal indicator and
th e condit
ions for activating Active Lane
Change Assi stare not fulfilled.
Ac tivating Steering Pilot
Requ irements
RESP®must be switched on, but not inter ven‐
ing.
Driving and pa rking 16
9
RDistance Pilot DISTRONIC must be activated.
#If indicator lamp1is off: press button 2.
Fu nction of Active Lane Change Assi st
St eering Pilot is only an aid. You are responsible
fo rth e dis tance totheve hicle in front, forve hi‐
cle speed, for braking in good time and forst ay ‐
ing in lane. Before changing lanes, make sure
th at the neighboring lane is free (shoulder view). %
The availability of thefo llowing function is
countr y-dependent.
St eering Pilot remains active even if the turn sig‐
nal indicator is switched on. Steering Pilot then
assists the driver when changing lanes byapply‐
ing steering torques toinitiate the lane change.
Assis tance when changing lanes is pr ovided if all
th efo llowing conditions are me t:
RYou are driving on a free wayor high-speed
multi-lan emajo rro ad with multiple lanes in
th e direction of tr avel.
RThe neighboring lane is free and separated
bya broken lane marking.
RThe driven speed is between 50 mph
(80 km/h) and 110mp h(1 80 km/h).
RThe turn signal indicator is switched on for
longer than two seconds.
If th e sy stem is impaired, Active Lane Change
Assi stmay be inter rupte d. If an inter ruption
occurs, display 1appears in the multifunction
display along with a warning tone prom pting you
to take control of theve hicle.
Ste ering and contact de tection
St eering Pilot requ ires you as the driver, tokeep
yo ur hands on thesteering wheel at all times so
th at you are able tointer vene at any time tocor‐
re ct the course of theve hicle and keep it in lane.
The driver must expect a change from active to
passive mode or vice versa at any time.
If yo u are not steering yourself or if you take
yo ur hands offthesteering wheel for a pro‐
longed period of time, the sy stem will, depend‐
ing on the situation, firs t alert youwit h a visual
wa rning. 1appears in the multifunction displa y.
If yo u are still not steering theve hicle yourself or
if yo u ha venot take n hold of thesteering wheel,
a wa rning tone sounds in addition tothewa rning
17 0
Driving and pa rking
#Tighten the wheel bolts evenly in a crosswise
pattern in the sequence indicated (1 to5).
Specified tightening torq ue: 111 lb-ft
(150 Nm).
& WARNING Risk of accident due toincor‐
re ct tigh tening torque
Th ewheels could come loose if the wheel
bolts or wheel nuts are not tightened tothe
prescribed tightening torque.
#Ha ve the tightening torque checked
immediately at a qualified specialist
wo rkshop af terch anging a wheel.
#Check the tire pressure of the newly moun‐
te d wheel and adjust according ly.
#Ve hicles with a tire pressure monitoring
sy stem: Restart the tire pressure monitoring
sy stem (
→page 349).
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
RNotes on tire pressure (→page 343)
Wheels and tires 37
1
