Problems with the transmission
ProblemPossible causes/consequences andMSolutions
The transmission has
problems shifting gear.The transmission is losing oil.
XHave the transmission checked ataqualified specialist workshop
immediately.
The acceleration ability
is deteriorating.
The transmission no lon-
ger changes gear.The transmission is in emergency mode.
It is only possible to shift into secondgear and reverse gear.
XStop the vehicle.
XShift the transmission to position P.
XSwitch off the engine.
XWait at least ten seconds before restarting the engine.
XShift the transmission to positionDor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
XHave the transmission checked at aqualified specialist workshop
immediately.
Transfer case
This section is only valid for vehicles with 4-
wheel drive (4MATIC). Power is always trans-
mitted to both axles.
!Performancet ests may only be carried out
on a2 -axle dynamometer. The brake system
or transfer case could otherwise be damaged. Contact aqualified specialist workshop for a
performancet est.
!Since ESP®engages automatically, the igni-
tion must be switched off (the SmartKey or
Start/Stop button must be in position 0or 1)
if:
Rthe electric parking brake is being tested
on abrake dynamometer
Rthe vehicle is being towed with only one
axle raised (not permitted for vehicles with
4MATIC).
The brake system could otherwise be dam-
aged.
!Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised, as doing so will damage the transmission.
Refueling
Important safety notes
GWARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is arisk of fire and explo-
sion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refueling.
GWARNING
Fuel is poisonous and hazardous to health.
There is arisk of injury.
You must make sure that fuel does not come into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
RWash away fuel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes,
immediately rinse them thoroughly with
Refueling149
Driving and parking
Z
To ensure that the vehicle is secured against
rolling away unintentionally:
Rthe electric parking brake must be applied.
Rthe transmission must be in positionPand the
SmartKey must be removed from the ignition
lock.
Rthe front wheels must be turned towards the
curb on steep uphill or downhill gradients.
Rthe empty vehicle must be secured at the
front axle with awheel chock or similar, for
example, on uphill or downhill gradients.
Ral aden vehicle must also be secured at the
rear axle with awheel chock or similar, for
example, on uphill or downhill gradients.
Switching off the engine
Important safety notes
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away.T here isarisk of an
accident.
After switching off the engine, alwayss witch
to parking position P.Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
Vehicles with automatic transmission
XApply the electric parking brake.
XShift the transmission to position P.
XWith the SmartKey:turn the SmartKey to
position 0in the ignition lock and remove it.
The immobilizer is activated.
XWith the Start/Stop button: press the
Start/Stop button (Ypage 131).
The engine stops and all the indicator lamps in
the instrument cluster go out.
When the driver's door is closed, this corre-
sponds to SmartKey position 1.When the
driver's door is open, this corresponds to
SmartKey position 0:"SmartKey removed".
If you switch the engine off with the transmis-
sion in position Ror D,t he automatic transmis-
sion shifts to Nautomatically.
With the SmartKey: if you then open the driv-
er's door or the front-passenger door or remove the SmartKey from the ignition, the automatic
transmission shifts to
Pautomatically.
With the Start/Stop button: if you then open
the driver's door or the front-passenger door,
the automatic transmission shifts to Pautomat-
ically.
If you want the automatic transmission to
remain in neutral N,e .g. when having the vehicle
cleaned in an automatic car wash with atowing
system:
XVehicles with the Start-Stop button:
remove the Start-Stop button from the igni-
tion lock.
XInsert the SmartKey into the ignition lock.
XAll vehicles: switch the ignition on.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
The engine can be switched off in an emergency
while the vehicle is in motion by pressing and
holding the Start/Stop button for three sec-
onds. This function operates independently of
the ECO start/sto pautomatic engine switch-off
function.
Electric parking brake
General notes
GWARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking position P.
Rstart the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is arisk of
an accident and injury.
When leaving the vehicle, alwayst ake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
Parking153
Driving and parking
Z
Winter driving
GWARNING
If you shift downonaslipperyr oad surface in
an attempt to increas ethe engine' sbraking
effect, the drive wheels coul dlose their grip.
There is an increased dange rofskidding and
accidents.
Do not shift downf or additionalengine brak-
ing on aslipperyr oad surface.
GDANGER
If the exhaust pip eisblocked or adequate
ventilation is not possible ,poisonousg ases
such as carbo nmonoxide (CO )may enter the
vehicle. This is the case, e.g. if the vehicle
becomest rappedinsnow. There is arisk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pip eand area
around the vehicl eare clearofs now. To
ensure an adequate supply of fresh air, open a
window on the side of the vehicl ethat is not
facing into the wind.
Have you rvehicl ewinter-proofed at aqualified
specialist worksho patthe onset of winter.
Drive particularly carefully on slipperyr oad sur-
faces. Avoid sudden acceleration, steering and
braking maneuvers. Do not use the cruis econ-
trol or DISTRONIC PLUS.
If the vehicl ethreatens to skid or cannot be
stoppedw hen moving at low speed:
XShift the transmission to position N.
The outside temperature indicator is not
designed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after ashort delay.
Indicated temperatures just above the freezing
point do not guarantee that the road surface is
free of ice. The road may still be icy, especially in
wooded area soronbridges. The vehicl ecould
skid if you fail to adapt you rdriving style .Always
adapt you rdriving style and drive at aspeedt o
sui tthe prevailing weather conditions.
You should pay special attention to road condi-
tions when temperatures are around freezing
point. For more information on driving with snow
chains, see (
Ypag
e319).
For more information on driving with summer
tires, see (
Ypag e318).
Observe the notes i
n the "Winter operation" sec-
tion (Ypag e318).
Driving systems
Mercedes-Ben zIntelligen tDrive
Mercedes-Benz Intelligent Drive stands for inno-
vative drive rassistance and safety systems
which enhance comfort and support the drive rin
critical situations. With these intelligent co-ordi-
nated systems Mercedes-Benz has set amile-
stone on the path towards autonomous driving.
Mercedes-Benz Intelligent Drive embraces all
elements of active and passive safety in one well
though tout syste m–for the safety of the vehi-
cle occupants and that of other road users.
Further information on driving safety systems
(
Ypag e61).
Cruise control
General notes
Cruise control maintains aconstant road speed
for you .Itbrakes automatically in order to avoid
exceeding the set speed. Change into alower
gearing ood time on long and steep downhill
gradients. This is especially important if the
vehicl eisladen. By doing so, you wil lmake use
of the braking effect of the engine. This relieves
the loa donthe brake syste mand prevents the
brakes from overheating and wearing too
quickly.
Use cruis econtrol only if road and traffic con-
ditions make it appropriate to maintain asteady
speedf orap rolonged period. You can store any
road speeda bove 20 mph (30 km/h).
Important safety notes
If you fail to adapt you rdriving style ,cruis econ-
trol can neither reduce the risk of an accident
nor override the law sofphysics. Cruise control
cannot take into account the road ,traffic and
weather conditions. Cruise control is only an
aid .You are responsiblef or the distance to the
160Driving systems
Driving and parking
vehicleinfront, for vehicl espeed, for braking in
good time and for staying in you rlane.
Do not use cruise control:
Rin road and traffic conditions which do not
allow you to maintai naconstant speed, e.g. in
heavy traffic or on winding roads
Ron slippery road surfaces. Braking or accel-
erating could caus ethe drive wheels to lose
traction and the vehicl ecould then skid
Rwhen there is poor visibility, e.g. due to fog,
heavy rain or snow
If there is achange of drivers ,advise the new
driver of the speeds tored.
iThe speedindicated in the speedometer
may differ slightly from the speeds tored.
Cruise control lever
:Activates or increasesspeed
;Activates or reduces speed
=Deactivates cruise control
?Activates at the current speed/last stored
speed
When you activate cruise control, the stored
speediss howninthe multifunction display for
five seconds. In addition, the ésymbol
appears in the multifunction display.
Speedometer with segments: when cruise
control is activated ,the segments from the
stored speedtot he maximumpermitted speed
light up.
Storing and maintainingt he current
speed
You can store the current speedify ou are driv-
ing faster than 20 mph (30 km/h).
XAccelerate the vehicl etothe desired speed.
XBriefly press the cruise control lever up :or
down ;.
XRemove you rfoot from the accelerator pedal.
Cruise control is activated .The vehicl eauto-
matically maintains the stored speed.
iCruise control may be unable to maintain
the stored speedonu phill gradients. The
stored speedisr esumedwhen the gradient
evens out. Cruise control maintains the
stored speedond ownhill gradients by auto-
matically applying the brakes.
Storing the current spee dorcalling up
the last stored speed
GWARNING
If you call up the stored speeda nd it is lower
than the current speed, the vehicl edeceler-
ates. If you do not know the stored speed, the vehicl ecould decelerate unexpectedly. There
is ar isk of an accident.
Pay attention to the road and traffic condi-
tions before calling up the stored speed. If you
do not know the stored speed, store the
desired speeda gain.
XBriefly pullthe cruise control lever towards
you ?.
XRemove you rfoot from the accelerator pedal.
The first time cruise control is activated ,it
stores the current speedorr egulates the
speedoft he vehicletothe previousl ystored
speed.
Setting aspeed
Keep in mind that it may take abrief moment
until the vehicl ehas accelerated or braked to
the speeds et.
XPress the cruise control lever up :for a
highers peedord own;for alower speed.
XTo adjust the set spee din1 mph incre-
ments (1 km/h increments): brieflypress
Driving systems161
Driving and parking
Z
Important safety notes
GWARNING
DISTRONI CPLUSd oes no treac tto:
Rpeople or animals
Rstationary obstacles on th eroad ,e.g.s top-
ped or parked vehicles
Roncomin gand crossing traffic
As aresult ,DISTR ONICPLUSm ay neither giv e
warning snorinterven einsuchs ituations.
Ther eisar iskofana ccident.
Always pay careful attention to th etraffic sit -
uation and be read ytob rake.
GWARNIN G
DISTRONI CPLUSc anno talways clearly iden -
tify other road user sand comple xtraffic sit -
uations.
In suc hcases, DISTRONI CPLUSm ay:
Rgiveanu nnecessary warning and then
brak ethe vehicl e
Rneither giv eawarning no rinterven e
Raccelerate or brak eunexpectedly
Ther eisar iskofana ccident.
Continue to driv ecarefully and be read yto
brake, in particular when warned to do so by
DISTRONI CPLUS.
GWARNIN G
DISTRONI CPLUSb rakes your vehicl ewithu p
to 50 %ofthe maximu mpossible deceleration.
If this braking force is insufficient, DISTRONIC
PLUS warns you visuall yand audibly.T here is
ar isk of an accident.
In such cases ,apply the brakes yourself and
try to take evasive action.
!If DISTRONIC PLUS or the HOLD function is
activated, the vehicl ebrakes automatically in
certain situations.
To prevent damage to the vehicle, deactivate
DISTRONIC PLUS and the HOLD function in
the following or other similar situations:
Rwhen towing the vehicle
Rin the car wash If you fail to adapt you
rdriving style ,DISTRONIC
PLUS can neither reduce the risk of accident nor
override the law sofphysics. DISTRONIC PLUS
cannot take into account the road ,traffic and
weather conditions. DISTRONIC PLUS is only an
aid .You are responsiblef or the distance to the
vehicl einfront, for vehicl espeed, for braking in
good time and for staying in you rlane.
Do not use DISTRONIC PLUS:
Rin road and traffic conditions which do not
allow you to maintain aconstant speede .g. in
heavy traffic or on winding roads
Ron slippery road surfaces. Braking or accel-
erating coul dcaus ethe drive wheels to lose
traction and the vehicl ecoul dthen skid
Rwhen there is poor visibility, e.g. due to fog,
heavy rain or snow
DISTRONIC PLUS may not detect narrow vehi-
cles driving in front, e.g. motorcycles, or vehi-
cles driving on adifferent line.
In particular, the detection of obstacles can be
impaired if:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is snow or heavy rain
Rthere is interference by other rada rsources
Rthere are strong rada rreflections, for exam-
ple ,inp arking gara ges
If DISTR
ONIC PLUS no longe rdetects avehicle
in front, DISTRONIC PLUS may unexpectedly
accelerate the vehicl etothe stored speed.
This speedm ay:
Rbe too high if you are driving in afilter lane or
an exit lane
Rbe so high in the right lane that you pas svehi-
cles driving on the left (left-hand drive coun-
tries)
Rbe so high in the left lane that you pas svehi-
cles driving on the right (right-hand drive
countries)
If there is achange of drivers, advise the new
drive rofthe speeds tored.
Driving systems163
Driving and parking
Z
Cruise control lever
:Activatesorincreases speed
;Activate sorreduces speed
=Deactivates DISTRONICP LUS
?Activatesatthecurren tspeed/last stored
speed
ASet sas pecifie dminimum distance
Activating DISTRONIC PLUS
Activation conditions
In order to activat eDISTR ONICP LUS, th efol-
lowingc onditionsm ust be fulfilled:
Rthee nginem ust be started. It may tak eupto
two minute safter pullinga way before
DISTRONICP LUSisoperational.
Rthee lectric parking brak emust be released.
RESP®must be active, but no tintervening.
RActiv eParking Assist must no tbeactivated.
Rthet ransmission must be in position D.
Rthed river'sd oor must be closed when you
shiftf rom Pto Dor your seat belt must be
fastened.
Rth ef ront-pa ssenger door and rear doorsm ust
be closed.
Activating
XBriefl ypull th ecruise control leve rtow ards
you ?,u p: or down ;.
DISTRONICP LUSisselected.
XRemove your foo tfro mt heaccelerato rpedal.
Your vehicle adaptsi ts speedtothatoft he
vehicle in front, but only up to th edesired
store dspeed.
iIf you do no tfully release th eaccelerator
pedal, the DISTRONICPLUSSuspendedmes-
sage appearsint hemultifunction display. The
set distanc etoaslower-moving vehicle in frontw
ill then no tbemaintained. You will be
driving at th espeedy ou determine by the
positio noftheaccelerato rpedal.
You can also activat eDISTR ONICP LUSwhen
stationary. The lowests peedthatc an be set is
20 mph (30 km/h).
XBriefl ypull th ecruise control leve rtow ards
you ?,u p: or down ;.
DISTRONICP LUSisselected.
Activating at th ecurren tspeed/last
stored speed
GWARNING
If you call up th estoreds peeda nd it differs
from th ecurren tspeed, th evehicle acceler-
ate sord ecelerates. If you do no tknowt he
store dspeed, th evehicle coul daccelerate or
brak eunexpectedly. Thereisar iskofana cci-
dent.
Pay attentio ntotheroad and traffic condi-
tions before calling up th estoreds peed. If you
do no tknowt he store dspeed, store the
desired speeda gain.
XBrieflypull th ecruise control leve rtow ards
you ?.
XRemove your foo tfro mt heaccelerato rpedal.
DISTRONICP LUSisactivated. The first tim eit
is activated, th ecurren tspeediss tored. Oth-
erwise, it setst hevehicle cruise speedtot he
previously store dvalue.
Driving with DISTRONIC PLUS
Pulling awa yand driving
XIf you want to pull awa ywith DISTRONIC
PLUS: remove your foo tfro mt hebrak epedal.
XBriefl ypull th ecruise control leve rtow ards
you ?.
or
XAccelerateb riefly.
Your vehicle pulls away and adaptsi ts speed
to that of th evehicle in front. If no vehicle is
detected in front, your vehicle accelerate sto
th es et speed.
The vehicle can also pull away when it is facing
an unidentified obstacle or is driving on adiffer-
entl inefroma nother vehicle .The vehicle then
brakes automatically.
164Driving systems
Driving and parking
Display when DISTRONIC PLUS is activa-
te d
:DISTRONIC PLU Sactive (tex tonlya ppears
when th ecruise control lever is actuated)
;Vehicl einfront,ifd etecte d
=Specified minimum distanc etothevehicl e
in front; adjustable
?Own vehicl e
In th eAssistance men u(
Ypage 212) of th eon-
boar dcom puter, you can select th eassistanc e
graphic sdisplay.
XSelec tthe Assistanc eGraphi cfunction
usin gthe on-boar dcom puter (Ypage 211).
You will see th estoreds peed fo rabout fiv esec-
onds when you activat eDISTR ONIC PLUS.
Deactivating DISTRONIC PLUS
There are severa lways to deactivat e
DISTRONIC PLUS:
XBriefly press th ecruise control lever for-
ward s:.
or
XBrake ,unless th evehicl eiss tationary
Whe nyou deactivat eDISTR ONIC PLUS, you will
see th eDISTRONIC PLU SOff
message in th emultifunction display fo
rapproximately fiv esec-
onds.
iThe last speed store dremain sstoredu ntil
you switch of fthe engine.
iDISTRONIC PLU Sisnotdeactivated if you
depress th eaccelerato rpedal.
DISTRONIC PLU Sisautomatically deactivated
if:
Ryou engage th eelectric parkin gbrak eorift he
vehicl eisautomatically secured wit hthe elec -
tric parkin gbrak e
RESP®intervenes or you deactivat eESP®
Rthet ransmissio nisintheP,Ror Nposition
Ryou pull th ecruise control lever toward syou
in order to pull away and th efront-pa ssenger
doo roro neof th ereard oors is ope n
Rthev ehicl eiss kiddin g
Ryou activat eActiv eParking Assis t
If DISTRONIC PLU Sisdeactivated, you will hear
aw arnin gtone. You will see th eDISTRONIC
PLU SO ffmessage in th emultifunction display
fo ra pproximately fiv eseconds.
Tips for drivin gwithD ISTRONIC PLUS
General notes
Pay particular attention in th efollowing traffic
situations:
RCornering, enterin gand exitin gabend: th e
abilit yofD ISTRONIC PLU Stodetectvehicles
when cornering is limited. Your vehicl emay
brak eunexpectedly or late.
RDriving on adifferen tline: DISTRONIC PLU S
may no tdetec tvehicles whic hare no tdrivin g
in th emiddle of their lane. The distanc etothe
vehicl einfrontwill be to oshort .
ROther vehicles changin glane: DISTRONIC
PLU Shas no tdetecte dthe vehicl ecutting in
yet .The distanc etothisv ehicl ewill be to o
short .
RNarrow vehicles: DISTRONIC PLU Sdoesn ot
detec tthe vehicl einfronton th eedgeoft he
roa dbecause of it snarrow width. The dis-
tance to th evehicl einf rontwill be to oshort .
RObstacles and stationary vehicles:
DISTRONIC PLU Sdoesn otbrak efor obsta-
cle sors tationary vehicles. If ,for example, th e
detecte dvehicl eturns acorner and reveals an
Driving systems167
Driving an dparking
Z
obstacle or stationary vehicle, DISTRONIC
PLUS will not brake for these.
RCrossing vehicles: DISTRONIC PLUS may mis-
takenly detect vehicles that are crossingyour
lane. Activating DISTRONIC PLUS at traffic
lights with crossingt raffic,for example, could
cause your vehicle to pull away unintention-
ally.
In such situations, brake if necessary.
DISTRONIC PLUS is then deactivated.
DISTRONIC PLUS with Steering Assist
and Stop&GoP ilot
General notes
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot aids you in keeping the vehicle in
the center of the driving lane by means of mod-
erate steering intervention satspeeds of
0-1 25 mph (0 -200 km/h) .
It monitors the area in front of you rvehicle by
means of multifunction camera :,atthe top of
the windshield.
In as peed range from 0-37mph (0-60km/h),
Stop&Go Pilotf ocuses on the vehicle in front,
taking into account lane markings, e.g. when
following vehiclesinat raffic jam.
At speedsofm ore than 37 mph (60 km/h),
Steering Assist focuses on clear lane markings
(left and right), only focusing on the vehicle in
front if clear lane markings are not present.
Steering Assist and Stop&Go Pilotdon ot pro-
vide any support if these conditions do not exist.
DISTRONIC PLUS must be active in order for the
function to be available.
Important safety notes
If you fail to adapt you rdriving style, DISTRONIC
PLUS with Steering Assist and Stop&Go Pilot
can neither reduce the risk of an accident nor override the law
sofphysics. It cannot take
account of road, weather and traffic conditions.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilotiso nly an aid.You are responsible
for the distance to the vehicle in front, for vehi-
cle speed,f or braking in good time and for stay-
ing in you rlane.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilotd oes not detect road and traffic
conditions. If you are following avehicle which is
driving towards the edge of the road, you rvehi-
cle could come into contact with the curb or
other road boundaries. Be particularly aware of
other road users, e.g. cyclists, that are directly
next to you rvehicle.
Obstacles such as traffic pylons on the lane or
projecting out into the lane are not detected.
An inappropriate steering intervention, e.g. after
intentionally driving over alane marking, can be
corrected at any time if you steer slightly in the
opposite direction.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilotc annot continuously keep your
vehicle in la
ne. In some cases, the steering
intervention is not sufficient to bring the vehicle
back to the lane. In such cases, you must steer
the vehicle yourself to ensure that it does not
leave the lane.
The system may be impaired or may not function
if:
Rthere is poor visibility, e.g. due to insufficient
illuminatio nofthe road, or due to snow, rain,
fog or spray
Rthere is glare ,e.g. from oncoming traffic, the
sun or reflections (e.g. when the road surface
is wet)
Rthe windshield is dirty, fogged up, damaged or
covered, for instance by asticker, in the vicin-
ity of the camera
Rthere are no, several or unclea rlane markings
for alane, e.g. in area swith road construction
work
Rthe lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too small
and the lane markings thus cannot be detec-
ted
Rthe lane markings change quickly, e.g. lanes
branch off, cross one another or merge
Rthe road is narrow and winding
Rthere are strong shadows cast on the road
168Driving systems
Driving and parking