
Engaging drive position D
#
Dep ress the brake pedal and push the
DIRECT SELECT le ver down past thefirst
point of resis tance. Fu
nction of flexible all-wheel distribution
The flex ible all-wheel distribution means the
drive is alw ays ideally distributed between the
two axles. Depending on the situation, only the
front axle or only there ar axle can be driven, or
th e drive can be distributed continuously
between bo thaxles.
This allo ws the maximum recur rent delay tobe
achie ved (/ page149). The resulting recupera‐
tion increases theve hicle's range.
To get her with ESP ®
and 4ETS, theflex ible all-
wheel distribution impr ovesth e traction of your
ve hicle whene ver a driven wheel spins due to
insuf ficient traction.
If yo ufa ilto adapt your driving style, theflex ible
all-wheel distribution can neither reduce therisk
of accident nor override the la wsof ph ysics. It
cannot take into account road, weather or traf fic
conditions. The flex ible all-wheel distribution is only an aid.
You are responsible especially for
maintaining a safe dis tance from theve hicle in
front, forve hicle speed, for braking in good time
and forst ay ing in lane.
% In wint ryroad conditions, the maximum
ef fect of theflex ible all-wheel distribution
can be achie ved only if you use winter tyres
(M+S tyres), with sn ow chains if necessar y. Cha
rging the high-voltage bat tery Note
s oncharging the high-voltage bat tery *
NO
TEHigh-vol tage battery damage due
to leaving theve hicle idle for lengt hy
periods of time Lithium-ion batteries
experience a natural
self-dis charge.
Exhaustive discha rging can therefore occur if
th eve hicle is idle for se veral mon ths. This
can damage the high-voltage batter y. #
Toavo id damage, please obser vethe
fo llowing recommendations when han‐
dling the high-voltage batter y. *
NO
TEAccelerated ageing of the high-
vo ltage battery As a
result of its basic characteristics, the
st orage capacity of and the amount of energy
av ailable from the high-voltage battery
decreases overth e course of its life. There‐
fo re , bo th th e maximum electrical range that
can be achie vedby theve hicle and its maxi‐
mum electrical output can be impaired.
The following factors can accele rate the age‐
ing of the high-voltage battery:
R frequently fully charging (char gelevel
10 0%) the high-voltage batter y,especially
when this process is not directly follo wed
by a journey
R frequent rapid charging with direct cur‐
re nt (mode 4)
R leav ing theve hicle non-operational for
long periods at high ambient temp era‐
tures #
Toavo id accelerated ageing, please
obser vethefo llowing recommendations
when handling the high-voltage batter y. Driving and pa
rking 16 3

%
When you swit choff theve hicle, the last
speed stored is dele ted.
When you activate cruise cont rol or Active
Dis tance Assi stDISTRONIC, the last speed
st ored forth eva riable limiter is dele ted.
Increasing/decreasing thesto red speed #
1 km/h: press rocker switch 1upM or
down Ntothe pressure point, or press
and hold (increments of 1 km/h).
or #
10km/h: press rock er switch 1upM or
down Nbeyond the pressure point, or
press and hold (increments of 10km/h).
or #
Accelerate theve hicle tothe desired speed
and press rocker switch 1upM.
Ad opting a de tected speed #
Activate cruise control or theva riable limiter. #
If a traf fic sign has been de tected and is dis‐
pl ay ed in the instrument clus ter: select J
with the left rocker switch.
The maximum permissible speed shown by
th e traf fic sign is stored and theve hicle
maintains or does not exceed this speed.
Deactivating cruise control or theva riable
limi ter #
Select Owith th e left rock er switch.
% Ifyo u brake, deactivate ESP ®
or if ESP ®
inter venes, cruise control is deacti vated. The
va riable limiter is not deactivated.
Information on the permanent limi ter
If th eve hicle should ne verexc eed a specific
speed (e.g. for driving in winter tyre mode), you
can set this speed with the permanent limiter.
Yo u do this by limiting the speed between
16 0 km/h and 240 km/h in the multimedia sys‐
te m (/ page199).
If yo u limit the speed toava lue abo vetheve hi‐
cle's maximum speed which can be driven or
maximum design speed, the permanent limiter
has no ef fect. The maximum speed whi chcan be driven can be limited
bya drive program or by
active range moni toring.
Shortly be fore the set speed is reached, it
appears in the multifunction displa y.When you
confirm the message, display messages no lon‐
ge r appear until you swit choff theve hicle. The
speed will only be displa yed again once theve hi‐
cle has been restar ted or if the set speed is
ch anged.
The permanent limiter does not swit chtopas‐
sive mode even du ring kickdown and the driven
speed remains below the set speed.
Setting the speed limitation for winter tyres
Multimedia sy stem:
4 © 5
Settings 5
Vehicle
5 Winter tyres limit #
Select a speed or deactivate the function. Ac
tive Di stance Assist DISTRO NIC Fu
nction of Active Di stance Assist
DISTRO NIC
Ac tive Dis tance Assi stDISTRONIC maintains the
set speed on free-flowing roads. If vehicles in Driving and parking
19 9

Note
s on noise or unusual handling charac‐
te rist ics
Make sure there are no vibrations, noises or
unusual handling characteristics when theve hi‐
cle is in motion. This may indicate that the
wheels or tyres are damaged. Hidden tyre dam‐
age could also be causing the unusual handling
ch aracteristics.
If yo u suspect that a tyre is defective, reduce
yo ur speed immediately and ha vethe tyres and
wheels checked at a qualified specialist work‐
shop. Note
s onregular lyinspecting wheels and
tyres &
WARNING Risk of inju rydue todamaged
tyres
Damaged tyres can cause tyre pressure loss. #
Check the tyres regularly for signs of
dama geand replace any damaged tyres
immediatel y. &
WARNING Risk of aquaplaning due to
insuf ficient tyre tread
Insu fficient tyre tread will result in reduced
tyre grip.
The risk of aquaplaning is increased on wet
ro ads, especially when the speed of theve hi‐
cle is not adap tedto suit the conditions. #
Thus, you should regularly check the
tread de pth and the condition of the
tread across the entire width of all
tyres.
Minimum tread dep thfor:
R Summer tyres: 3 mm
R M+S tyres: 4 mm #
For saf etyre asons, replace the tyres
before the legally-prescribed limit for
th e minimum tread dep thisreached. Car
ryout thefo llowing checks on all wheels reg‐
ularly, at least once a month or as requ ired, for
ex ample, prior toa long journey or driving off-
ro ad:
R Check the tyre pressure (/ page 329).
R Visually inspect wheels and tyres for dam‐
age.
R Check theva lve caps.
R Visual check of the tyre tread dep thand the
tyre contact su rface across the entire width.
The minimum tread dep thfor summer tyres
is 3 mm and for winter tyres 4 mm. Note
s on snow chains
* NO
TEDama getocomponents of the
ve hicle body or chassis due tofitted
snow chains If
yo ufit snow chains tothe front wheels of
4MATIC vehicles, you may damage co mpo‐
nents of theve hicle body or chassis. 328
Wheels and tyres

#
Only fit snow chains tothere ar wheels
of 4MATIC vehicles. Obser
vethefo llowing no tes when using snow
ch ains:
R Snow ch ains are on ly permissible for cer tain
wheel/tyre combinations. You can obtain
information about this from a Mercedes-Benz
Service Cent re.
R For saf etyre asons, on lyuse sn ow chainsthat
ha ve been specifically appr ovedfo ryo ur
ve hicle byMercedes-Benz, or snow chains
with the same quality standard.
R If sn ow ch ains are fitted, the maximum per‐
missible speed is 50 km/h.
R Vehicles with Active Park ing Assis t:do
not use Active Parking Assist when snow
ch ains are fitted.
% You can permanently limit the maximum
ve hicle speed for driving with winter tyres
(/ page 199). %
You can deactivate ESP ®
to pull away
( / page 192). This all owsth e wheels to
spin, achieving an increased driving forc e. Ty
re pressure Note
s on tyre pressure &
WARNING Risk of accident due toinsuf‐
fi cient or excessive tyre pressure
Ty res with either too low or too high a pres‐
sure present thefo llowing hazards:
R the tyres could bur st
R the tyres could wearexcessively and/or
une venly
R the driving characteristics as well as
st eering and braking characteristics may
be se verely impaired #
Obse rveth ere commended tyre pres‐
su res and check the tyre pressures of
all tyres including the spare wheel:
R monthly R
if altering the load on theve hicle
R prior tolong journe ys
R ifth e operating conditions change, for
ex ample when driving off- road #
Adjust the tyre pressure where neces‐
sar y. Ty
re pressure which is too high or too low can:
R Shor tenth e service life of the tyres.
R Cause increased tyre damage.
R Adversely af fect driving characteristics and
th us driving saf ety, e.g. due toaquaplaning. &
WARNING Risk of accident due torepea‐
te d pressure drop in the tyres
The wheels, valves or tyres could be dam‐
aged.
To o low a tyre pressure can lead tothe tyres
bur sting. #
Examine the tyres forfo re ign objects. Wheels and tyres
329

#
Avoid obs tacles or drive overth em with
particular care. #
Reduce speed when driving overke rbs,
speed bumps, manhole co vers and pot‐
holes. #
Avoid especially high kerbs. *
NO
TEDama getoelectronic component
parts from the use of tyre-fitting tools Ve
hicles with a tyre pressure monitoring
sy stem: electronic component parts are
located in the wheel. Tyre-fitting tools should
not be applied in the area of theva lve.
The tools could damage the electronic com‐
ponent parts. #
Have the tyres changed at a qualified
specialist workshop onl y. *
NO
TEDama getosummer tyres at low
ambient temp eratures At
low ambient temp eratures, tears could
fo rm when driving with summer tyres, caus‐
ing permanent damage tothe tyre. #
Attemp eratures below 7 °C, use M+S
tyres. Ac
cessory pa rts th at are not appr ovedfo ryo ur
ve hicle byMercedes-Benz or are not being used
cor rectly can impair the operating saf ety.
Before pu rchasing and using non-appr oved
accesso ries, visit a qualified specialist workshop
and enquire about thefo llowing:
R Suitability
R Legal stipulations
R Factory recommendations &
WARNING Risk of accident wi thhigh
per form ance tyres
There is an inc reased risk of skidding and
aquaplaning when using sport tyres on wet
ro ads. In addition,
the tyre grip is greatly reduced at
a low outside temp erature and tyre running
te mp erature. #
Activate ESP ®
and adapt your driving
st yle accordingly. #
Use M+S tyres at outside temp eratures
below 10°C. #
Only use the tyres forth eir intended
purpose. Obser
vethefo llowing when selecting, fitting and
re placing tyres:
R Countr y-specific requirements for tyre
appro valth at define a specific tyre type for
yo ur vehicle.
Fu rthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can
be highly beneficial.
R Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOEx tended
tyres) and the same make.
R Only fit wheels of the same size on one axle
(left and right). 334
Wheels and tyres

It is only permissible
tofit a di fferent wheel
size in theev ent of a flat tyre in order to
drive tothe specialist workshop.
R Only fit tyres of the cor rect size onto the
wheels.
R Do not make any modifications tothe brake
sy stem, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may in validate theve hicle's
ge neral operating pe rmit.
R Vehicles with a tyre pressure monitoring
sy stem: allfitted wheels mu stbe equipped
with functioning sensors forth e tyre pres‐
sure monitoring sy stem.
R Attemp eratures below 7°C use winter tyres
or all-season tyres mar ked M+S for all
wheels.
Wi nter tyres bearing thei snowflake
symbol in addition tothe M+S marking pro‐
vide the best possible grip in wintry road
conditions.
R For M+S tyres, only use tyres with the same
tread. R
Obser vethe maximum permissible speed for
th e M+S tyres fitted.
If th is is below theve hicle's maximum speed,
th is must be indicated byan appropriate
label in the driver's field of vision.
R Run in new tyres at moderate speeds forthe
fi rs t10 0 km.
R Replace the tyres af ter six years at the latest,
re ga rdless of wear.
Fo r more information on wheels and tyres, con‐
tac t a qualified specialist workshop.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (/ page 329)
R Tyre pressure table (/ page 330)
R Notes on the emer gency spa rewheel
(/ page 342) Note
s on inter changing wheels &
WARNING Risk of inju rythro ugh dif fer‐
ent wheel sizes
Inter changing the front and rear wheels can
se verely impair the driving characteristics.
The disk brakes or wheel suspension compo‐
nents may also be damaged. #
Onlyinter change the front and rear
wheels if the wheels and tyres ha vethe
same dimensions. Inter
changing the front and rear wheels if the
wheels or tyres ha vediffere nt dimensions can
re nder thege neral operating pe rmit in valid.
The wear pat tern s on the front and rear wheels
dif fer:
R front wheels wear more on the tyre shoulder
R rear wheels wear more in the cent reofthe
tyre
Do not drive wi thtyres that ha vetoo little tread
dep th. This significantly reduces traction on wet
ro ads (aquaplaning). Wheels and tyres
335

#
Obser vethe instructions in the
Mercedes-Benz Specifications for Oper‐
ating Fluids 310.1. Ha
ve the coolant regularly replaced at a qualified
specialist workshop.
Proportion of antifreeze concentrate in the
engine cooling sy stem:
R A minimum of 50% (antifreeze pr otection
down toabout -37°C)
R A maximum of 55% (antifreeze pr otection
down to-45°C) Note
s on windscreen washer fluid Obser
vethe no tes on operating fluids
(/ page 348). &
WARNING Risk offire and injury from
windsc reen washer concentrate
Wi ndsc reen washer concentrate is highly
fl ammable. If it comes into con tact wi thhot
components, it may ignite. #
Make sure that windsc reen washer con‐
centra teis not spilled near tothefiller
opening. *
NO
TEDama getotheex terior lighting
due tounsuitable windsc reen washer
fl uid Uns
uitable windsc reen washer fluids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer fluids
which are also suitable for use on plas‐
tic sur faces, e.g. MB SummerFit or MB
Wi nterFit. *
NO
TEBlocked spr aynozzles caused by
mixing windscreen washer fluids #
Do not mix MB SummerFit and MB Win‐
te rFit with other windscreen washer flu‐
ids. Do not use distilled or de-ionised
water.Other‐
wise, thefill le vel sensor may be triggered er ro‐
neously.
Re commended windscreen washer fluid:
R abo vefreezing point: e.g. MB SummerFit
R below freezing point: e.g. MB WinterFit
Fo rth e cor rect mixing ratio, referto the informa‐
tion on the antif reeze conta iner.
Mix washer fluid with windsc reen washer fluid all
ye ar round. Ve
hicle data Ve
hicle dimensions The heights speci
fied may vary as a result of the
fo llowing factors:
R tyres
R load
R condition of the suspension
R optional equipment 350
Tech nical da ta

Display messages
Possible causes/consequences and M
MSolutions
ð Maximum speed exceeded *Y
ou ha veexceeded the maximum permissible speed (for cer tain countries only). #
Drive more slowl y.
Speed limit (winter tyres)
XXX km/h *Y
ou ha vereached the maximum permissible stored speed for winter tyres. It is not possible toexceed this speed.
Active Steering Assist cur-
rently unavailable See Own-
er's Manual *A
ctive Steering Assist is temp orarily una vailable.
The ambient conditions are outside the sy stem limits (/ page 206).
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again. #
Drive on. #
If necessar y,clean the windscreen in the camera's field of vision. #
Check the tyre pressure if necessar y.
Active Steering Assist inop-
erative *A
ctive Steering Assist is malfunctioning. Active Dis tance Assi stDISTRONIC remains available. #
Consult a qualified specialist workshop.
Active Steering Assist cur-
rently unavailable due to
multiple emergency stops *A
ctive Steering Assist is temp orarily una vailable due tomultiple emergency stops. #
Take ove rth esteering and stop in accordance with the tra ffic conditions. #
Swit chthe ignition off and switch it back on.
Ac tive Steering Assist is available once more. Display messages and
warning/indicator lamps 389