
Problems with the engine
Problem
Possible causes/consequences and
M
MSolutions The engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X Deactivat ethe HOLD function (Y page 228) or DISTRONIC
PLUS (Y page 224).
X Try to start the engine again. The engine does not
start. The starter motor
can be heard. R
There is amalfunction in the engine electronics.
R There is amalfunction in the fuel supply.
Before attempting to start the engine again:
X Turn the key back to position 0in the ignition lock.
or
X Press the Start/Stop button repeatedly until all indicator lamps
in the instrumen tcluster go out.
X Try to start the engine again (Y page 181). Avoid excessively
long and frequent attemptstos tart the engine, as this will drain
the battery.
If the engine does not start after several attempts: X Consult aqualified specialist workshop. The engine does not
start. The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge display shows 0. The fuel tank is empty.
X Refuel the vehicle. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged.
X Jump-start the vehicle (Y page 405).
If the engine does not start despite attemptstoj ump-start it:
X Consult aqualified specialist workshop. The starter motor was exposed to
athermal load that was too high.
X Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult aqualified specialist workshop. Driving
187Driving and parking Z

Problem
Possible causes/consequences and
M
MSolutions Vehicles with
apetrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is
amalfunction in the engine electronics or in amechanical
componentoft he engine management system.
X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
X Have the cause rectified immediately at aqualified specialist
workshop. The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be on and a
warning tone may
sound. The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 382). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct,t
he engine radiator fan may be faulty.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X If the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic. Manual transmission
Gear lever
! Only engage gear when the clutch pedal is
depressed.
! When shifting between
5thand 6thgear,
you should always push the gear lever all
the way to the right. Otherwise, you could
shift unintentionally into 3rdor4th gear
and damage the transmission.
If you shift down at too high aspeed (trans-
mission braking), this can cause the engine to overrev, leading to engine damage.
Do not use the clutch bite point to keep the
vehicle stationary on uphill gradients.
There is otherwise arisk of damaging the
clutch.
! On long and steep downhill gradients,
especially if the vehicle is laden or towing a trailer, you must shift into gear
1, 2or3in
good time. This uses the engine's braking
effect.T his relieves the load on the brake
system and preventst he brakes from over-
heating and wearing too quickly. k
Reverse gear
1 -6
Forward gears 188
Manual transmissionDriving and parking

Transmission positions
B Park position
Thi
sprevents the vehicl efromr oll-
ing away when stopped. Onl yshift
the transmission into position P
when the vehicl eisstationary
(Y page 244).
Park position Pis automatically
engaged if:
R yo us witch off the engine using
the key and remove the key
R yo us witch off the engine using
the key or using the Start/Stop
button and open the driver's
door or front-passenge rdoor
R yo uo pent he driver's door when
the vehicl eisstationar yordriv-
ing at ver ylow spee dand the
transmission is in position Dor R C Revers
egear
Onl yshift the transmission into
position Rwhen the vehicl eissta-
tionary. A Neutral
Do not shift the transmission to
N
whil edriving .Otherwise, the auto-
matic transmission could be dam-
aged.
No powe ristransmitted fro mthe
engine to the drive wheels.
Releasing the brakes will allo wyou
to mov ethe vehicl efreely, e.g .to
push it or tow it.
If ESP ®
is deactivated or faulty:
shift the transmission onl ytoposi-
tion Nif the vehicl eisindangerof
skidding ,e.g.oni cy roads.
If yo uswitch the engine off with the
transmission in position Ror D,t he
automatic transmission shifts to N
automatically.
! Rolling in neutral
Ncan lead to
damage to the transmission. 7 Drive
The automatic transmission
change sgeara utomatically. All
forward gear sareavailable. Driving tips
Changin ggear The automatic transmission shifts to the indi-
vidua lgears automaticall ywhenitisint rans-
mission position D.Gearshifting is deter-
mined by:
R the selected drive progra m(Ypage 194)
R the positio nofthe accelerator pedal
(Y page 193)
R the roa dspeed
Accelerator peda lposition Your style of driving influences how the auto-
matic transmission shifts gear:
R little throttle :early upshifts
R mor ethrottle :lat eu pshifts Automati
ctransmission
193Driving andparking Z

i
You can only change gear with the steer-
ing wheel gearshift paddles when the trans- missio nisinp ositionD. Automatic drive program
Automatic drive progra mEDrive program
E(drive program Con AMG
vehicles) is characterised by the following:
R comfort-oriented engin esettings.
R optimal fuel consumption resulting from
the automatic transmission shifting up
sooner.
R the vehicle pulling away more gently in
forward and reverse gears unless the accel-
erator pedal is depressed fully.
R increased sensitivity. This improves driving
stabilit yonslippery road surfaces, for
example.
R the automatic transmission shifting up
sooner. This result sinthe vehicle being
drive natl ower engin espeeds and the
wheels being less likely to spin.
Automatic drive progra mE+
(E 300 BlueTEC and E350 BlueTEC) Drive program
E+is characterised by the fol-
lowing:
R comfort-oriented engin eand automatic
transmission settings.
R optimal fuel consumption resulting from
the automatic transmission shifting up
sooner.
R the vehicle pulling away more gently in
forward and reverse gears unless the accel- erator pedal is depressed fully.
R increased sensitivity. This improves driving
stabilit yonslippery road surfaces, for
example.
R the automatic transmission shifting up
sooner. This result sinthe vehicle being drive
natl ower engin espeeds and the
wheels being less likely to spin.
R overrun mode up to aspeed of 160 km/h:
- the combustio nengin eisd isconnected
fro mt he drive train
- the engin espeed is equal to the engine
idling speed
Overrun mode can be activate dunder the fol-
lowing conditions:
R the type of road is suitable, e.g. no steep
gradients
R you are drivin gslower than 160 km/h
R you are no longer depressing the accelera-
tor pedal
Overrun mode is deactivate dunder the fol-
lowing conditions:
R you are drivin gfaster than 160 km/h
R you depres sthe accelerator pedal
R you depres sthe brak epedal
R you use the DIRECT SELECT lever to switch
the transmission position (Y page 190)
R you switc htodrive program Eor S
(Y page 194)
R ad rive assist or safet ysystem is required,
e.g. COLLISIO NPREVENTIO NASSISTP LUS
Automatic drive progra mS Drive program
S(or, in the case of AMG vehi-
cles, drive programs Sand S+)isc haracter-
ised by the following:
R sport yengin eand automatic transmission
settings.
R the automatic transmission shifting up
later.
R as aresult of the later automatic transmis-
sion shift points, the fuel consumption pos- sibly being higher. 196
Automatic transmissionDriving and parking

the key must be remove
dfromt he ignition
lock
R the front wheels must be turned towards
the kerb on steep uphill or downhil lgradi-
ents Switchin
goffthe engine
Important safety notes G
WARNING
Th ea utomatic transmission switches to neu-
tra lposit ionNwhen yo uswitch off the engine.
Th ev ehicl emayrollaway. There is ariskofan
accident.
After switching off the engine ,alway sswitch
to parking position P.Prevent the parked vehi-
cle fro mrolling away by applying the parking
brake.
Vehicle swithm anual transmission X
Shift to eithe r1st gear or revers egear R.
X Turn the key to position 0in the ignition
lock and remove it.
Th eimm obiliser is activated.
X Firml ydepress the parking brake.
Vehicle switha utomatic transmission X
Firml ydepress the parking brake.
X Allv eh icle s(exce pt AM Gvehicles): shift
the transmission to position P.X
AM Gvehicles: when the vehicl eisstation-
ary, press button :. X
Wit hthe key: turnthe key to position 0in
the ignition lock and remove it.
Th eimm obiliser is activated.
X Wit hKEYLESS -GO:press the KEYLESS-
GO Start/Stop button (Y page 179).
Th ee ngine stops and al lthe indicator
lamps in the instrument cluste rgoout.
When the driver's door is closed, thi scor-
responds to key position 1.Whent he driv-
er' sd ooriso pen, thi scorresponds to key
position 0:"keyr emoved".
If yo uswitch the engine off with the trans-
mission in position Ror D,t he automatic
transmission shifts to Nautomatically.
Wit hthe key: if youtheno pent he driver's
door or the front-passenge rdoororr emove
the key fro mthe ignition, the automatic trans-
mission shifts to Pautomatically.
Wit hKEYLESS -GO:if youtheno pent he driv-
er' sorf ront-passenge rdoor, the automatic
transmission shifts to P.
If yo uwantthe automatic transmission to
remai ninneutral N,e.g.w henh avin gthe
vehicl ecleane dinana utomatic car wash with
at owing system:
Wit hthe key:
X Switch the ignition on.
X Depres sthe brake peda land kee pit
depressed.
X Shift to neutral N.
X Releas ethe brake pedal.
X Releas ethe parking brake.
X Switch off the ignition and leav ethe key in
the ignition lock.
Wit hKEYLESS -GO:
X Remov ethe Start/Stop button fro mthe
ignition lock.
X Insert the key into the ignition lock.
X Switch the ignition on.
X Depres sthe brake peda land kee pit
depressed.
X Shift to neutral N.206
ParkingDriving an
dparking

boostin
geffect. You will require considerably
more effor ttosteer and brake. There is arisk
of an accident.
Do not switch off the ignition while driving. ECO display
The ECO display provides feedback on how
economical your driving characteristic sare.
The ECO display assists you in achievin gthe
most economical driving style for the selec-
ted settings and prevailing conditions. Con-
sumption can be significantly influenced by
your driving style.
The ECO display consists of three bars:
R Acceleration
Acceleration
R Constant Constant
R Coasting
Coasting
The percentage count is the mean value of the three bar values. The three bars and the mean
value begin at the value of 50%. Ahigher per-
centage count indicates amore economical
driving style.
The ECO display does not indicat ethe actual
fuel consumption .Afixed percentage count
in the ECO display does not indicat eafixed
consumption.
In addition to driving style, the consumption is
affected by many other factors, such as:
R load
R tyre pressure
R cold start
R choic eofroute
R the use of electrical consumers
These factors are not included in the ECO dis-
play. The evaluation of your driving style take
sthe
following three categories int oconsideration:
R Acceleration Acceleration (evaluation of all accelera-
tion processes):
- the bar fills up: moderat eacceleration,
especially at higher speeds
- the bar empties: sport yacceleration
R Constant
Constant (assessmen tofdriving behav-
iour at all times):
- the bar fills up: constan tspeed and
avoidance of unnecessary acceleration
and deceleration
- the bar empties: fluctuations in speed
R Coasting Coasting (assessmen tofall deceleration
processes):
- the bar fills up: anticipatory driving ,keep-
ing your distanc eand early release of the
accelerator. The vehicle can coast with-
out use of the brakes.
- the bar empties: frequent braking
i An economical driving style involves driv-
ing at amoderat eengin espeed.
To achieve ahigher value in the categories
Acceleration
Acceleration andConstant
Constant:
R observe the gearshift recommendation
R drive the vehicle in drive program E(vehi-
cles with automatic transmission)
i On long journeys at
aconstan tspeed, e.g.
on the motorway, only the bar for Constant
Constant
will change.
i The ECO display summarises the driving
characteristic sfrom the start of the journey
to its completion. Therefore, ther eare
dynamic changes in the bars at the start of aj ourney. Durin gaprolonge ddriving time,
these changes are smaller. For more
dynamic changes, perfor mamanual reset.
Further information on the ECO display
(Y page 280). 208
Driving tipsDriving and parking

Brakes
Important safety notes G
WARNING
If yo ushift down on aslipper yroads urface in
an attempt to increas ethe engine's braking
effect, the drive wheels could lose thei rgrip.
Thi sincreases the ris kofskidding and having
an accident.
Do not shift down for additional engine brak-
ing on aslipper yroads urface.
Downhil lgradients Do not depress the brake peda
lcontinuously
whil ethe vehicl eisinmotion, e.g .never
cause the brakes to ru bbyconstantly apply-
ing light pressure to the pedal. Thi sresults in
excessive and premature wear to the brake
pads.
Chang einto alower gearing oodtime on long
and stee pdownhil lgradients.
Take particula rnote of thi swhend riving a
lade nvehicl eand when towing atrailer.
i Thi
salsoa pplies if youhavea ctivated
cruis econtrol, SPEEDTRONIC or
DISTRONIC PLUS.
Thi sw illu se the braking effect of the engine,
so less braking will be required to maintain
vehicl espeed .Thisr elieves the load on the
brake system and prevents the brakes from
overheating and wearing too quickly.
Heavy and light loads G
WARNING
The braking system can overheat if yo ulea ve
your foo tonthe brake peda lwhile driving.
Thi sincreases the braking distance and could
eve ncause the braking system to fail. There is
ar iskofana ccident.
Never us ethe brake peda lasafootrest. Do
not simultaneousl ydepress both the brake
peda land the accelerato rpedal whiledriving. !
Depressing the brake peda
lconstantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to aheavy
load ,don ot stop the vehicl eimmediately, but
drive on for ashort while. Thi sallow sthe air-
flo wtoc ool the brakes more quickly.
If the brakes have been used onl ymoderately,
yo us houl doccasionall ytest thei reffective-
ness .Todot his, brake more firmly from a
highe rspeed whil epayin gattentio ntothe
traffic conditions. Thi simprove sthe gri pof
the brakes.
Wet road surfaces If yo
uhaved riven for alon gtime in heavy rain
withou tbraking ,ther em aybe adelayed reac-
tio nfrom the brakes when braking for the first
time .Thism ayalso occu rafte rac ar wash or
afte rdriving throug hdeepw ater.
Yo uw illh av etod epress the brake peda lmore
firmly .Maintain agreate rdistance to the vehi-
cle in front.
After driving on awetroa dorh aving the vehi-
cle washed, brake firmly whil epayin gatten-
tio ntot he traffic conditions. Thi swillw armup
the brake discs, thereb ydrying them more
quickl yand protecting them against corro-
sion.
Limite dbraking performanc eonsalt-
treate droads If yo
udrive on salt-treate droads, alayer of
salt ma yform on the brake discs and pads.
Thi scan increas ethe braking distance con-
siderably.
R In order to prevent any salt build-up, apply
the brakes occasionall ywhile paying atten-
tio ntot he traffic conditions.
R Carefull ydepress the brake peda latthe
end of the journey and when starting the
next journey.
R Maintain amuchg reate rdistance to the
vehicl einfront. Driving tips
209Driving andparking Z

New brak
epads/linings Brake pads/lining
sand discs tha tare either
new or have been replaced onl yachieve opti-
mu mb raking effect after several hundred kil-
ometres of driving. Compensate for the
reduced braking effect by applying greater
force to the brake pedal.
For safety reasons, Mercedes-Benz recom-
mend stha tyou onl yhaveb rake pads/linings
fitted to your vehicl ewhich have been
approved for Mercedes-Benz vehicles or
which correspond to an equivalent quality
standard. Brake pads/lining swhich have not
been approved for Mercedes-Benz vehicles or
which ar enot of an equivalent quality could
affec tyou rv ehicle' soperating safety.
AM Gh igh-performanc eand ceramic
brakes Th
eh igh- performance brake syste misonly
availabl eonAMG vehicles.
Th eA MG brake systems ar edesig nedf or
heav yloads .Thism aylead to noise when
braking .Thisisd ependent on:
R speed
R braking force
R environmenta lconditions ,suc hast emper-
ature and humidity
Th ew earofi ndividua lcomponents of the
brake system, such as the brake pads/linings
or brake discs ,depen ds on the individua ldriv-
ing style and operating conditions.
For thi sreason, it is impossibl etostate a
mileag e(service life) tha twillbev alidunder
al lc ircumstances .Anaggressive driving style
will lead to high wear .You can obtai nfurther
information abou tthisf romy ourM ercedes-
Benz Service Centre.
Brake pads/lining sand discs tha tare either
new or have been replaced onl yachieve opti-
mu mb raking effect after several hundred kil-
ometres of driving. Compensate for the
reduced braking effect by applying greater
force to the brake pedal. Alway sbeawareofthi
sa nd adap tyou rd riving and braking
accordingly during the running-in period.
Excessive heav ybraking results in corre-
spondingly high brake wear .Obser ve the
brake wear warning lamp in the instrument
cluste rand note any brake status messages
in the multifunctio ndisplay .Ifyouregularly
drive at high speeds ,itisparticularl yimpor-
tant to have the brake syste mchecked and
maintaine dregularly. Driving on we
troads
Aquaplaning If water ha
saccumulate dtoacertaindepth
on the roa dsurface, there is adangerofa qua-
planing occurring, eve nif:
R yo ua redriving at lo wspeeds
R the tyres have adequate trea ddepth
For thi sreason, drive in the following manner
in the event of heav yrainorinc onditions in
which aquaplaning can occur:
R lowe ryours peed
R avoi dtyrer uts
R avoi dsudde nsteering movements
R brake carefully
Driving on flooded roads !
Bea
rinm indt hatv ehicles travelling in
front or in the opposite directio ncreate
waves .Thism aycause the maximum per-
missibl ewater depth to be exceeded.
Thes enote sm ustbeo bservedu nder all
circumstances .You could otherwis edam-
ag et he engine ,the electronics or the trans-
mission. 210
Driving
tipsDriving an dparking