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When you depress the accelerator pedal, the
engine starts automatically and the braking
effect of the HOLD function is deactivated.
Automatic engine switch-off can take place a
maximum of four times in a row (initial stop,
then three subsequent stops).
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function
by pressing the ECO button
Ryou switch to drive programS+
Rin transmission positionDor Nthe brake
pedal is released and the HOLD function is
not active
Ryou depress the accelerator pedal
Ryou engage reverse gear R
Ryou move the transmission out of position
P
Ryou unfasten your seat belt or open the
driver's door
Rthe vehicle starts to roll
Rthe brake system requires this
Rthe temperature in the vehicle interior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on
Rthe battery's condition of charge is too low
Shifting the transmission to position Pdoes
not start the engine.
Deactivating or activating the ECO
start/stop function
XTo deactivate: press ECO button :.
Indicator lamp ;goes out.
XTo activate: press ECO button :.
Indicator lamp ;lights up.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will
then not be switched off automatically when
the vehicle stops.
Selecting drive program S+deactivates the
ECO start/stop function. If you press ECO
button :, the ECO start/stop function is
activated.
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Problems with the engine
ProblemPossible causes/consequences andMSolutions
The engine does not
start. The starter motor
can be heard.RThere is a malfunction in the engine electronics.
RThere is a malfunction in the fuel supply.
Before attempting to start the engine again:
XTurn the SmartKey back to position 0in the ignition lock.
or
XPress the Start/Stop button repeatedly until all indicator lamps in the instrument cluster go out.
XTry to start the engine again (Ypage 155). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.
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.
XJump-start the vehicle (Ypage 365).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
XTry to start the engine again (Ypage 155).
If the engine still does not start:
XConsult a qualified specialist workshop.
The engine is not run-
ning smoothly and is
misfiring.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
XHave the cause rectified immediately at a qualified specialist
workshop.
The coolant tempera-
ture gauge shows a
value above 248 ‡
(120 †).The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 341). Observe the warning
notes as you do so and add coolant if necessary.
160Driving
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DYNAMIC SELECT switch
Use theDYNAMI CSELECT switch to chang e
th edrive program. Dependin gon th edrive
program selecte dth efollowing vehicle char-
acteristic swill change:
Rth edrive (engin eand transmissio nman -
agement)
Rth esuspensio n
Rthesteerin g
Rtheavailabilit yof th eEC Ostart/sto pfunc-
tion
Rth eclimat econtrol:
-th eclimat econtro lsetting s
-therea rwindow defroster operation
period
-th eperformanc eof th eseat heatin g
Each time you start th eengin ewit hth e
SmartKey or th eStart/Sto pbutton, drive pro -
gram Cis activated. Fo rfurther information
about startin gth eengine, see (
Ypage 155).
XPush DYNAMI CSELECT switch :up or
down until th edesire ddrive program is
selected.
The status icon of th eselecte ddrive pro -
gram is shown in th emultifunction display.
In addition ,th ecurren tdrive program set -
ting sare displayed briefly in th eAudio 20 or
COMAN Ddisplay.
iIn afe w countries, th eEC Ostart/sto p
function is deactivated at th efactory due to
th eavailable fue lgrade. In this case, th e
EC Ostart/sto pfunction is no tavailable in any drive program, regardles
sof th edisplay
in th eAudio 20 or COMAN Ddisplay.
Available drive programs:
I IndividualIndividual setting s
S+Spor tPlusParticularly sport ydrivin g
characteristics
S Spor tSporty drivin gcharacter-
istic s
CComfortComfortable and econom -
ical drivin gcharacteristics
E Econom yParticularly economical
drivingcharacteristics
Additional information fo rdrive programs
(
Ypage 166).
You can also chang egear yoursel fusin gth e
steerin gwhee lpaddle shifters .Fo rfurther
information on th emanual drive program
(
Ypage 167).
Automatic transmission
Important safet ynotes
GWARNING
If th eengin espeed is abov eth eidlin gspeed
and you engage transmissio nposition Dor R,
th evehicle could pull away suddenly. There is
a ris kof an accident.
Whe nengaging transmissio nposition Dor R,
always firmly depress th ebrake peda land do
no tsimultaneousl yaccelerate.
GWARNING
The automatic transmissio nswitches to neu-
tral position Nwhen you switch of fth eengine.
The vehicle may roll away. There is aris kof an
accident.
Afte rswitchin gof fth eengine, always switch
to parking position P.Prevent th eparke dvehi-
cl e from rollin gaway by applyin gth eparking
brake .
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DIRECT SELECT lever
Overview of transmission positions
jPar kposition wit hparking loc k
kReversegear
iNeutral
hDrive
The DIREC TSELECT lever is on th eright of th e
steerin gcolumn .
The DIREC TSELECT lever always return sto
it s original position .The curren ttransmissio n
position P,R ,N or Dappears in th etransmis -
sio nposition display in th emultifunction dis -
play (
Ypage 163).
Engaging park position P
!If theengin espeed is to ohig hor th evehi-
cl e is moving, do no tshift th eautomatic
transmissio ndirectl yfrom Dto R,from Rto
D or directl yto P. The automatic transmis -
sio ncould otherwise be damaged .
jParkposition wit hparking loc k
kReversegear
iNeutral
hDrive
XPush th eDIREC TSELECT lever in th edirec -
tion of arrow P.
Engaging park position Pautomatically
Par kposition Pis automatically engage dif:
Ryou switch of fth eengin eusin gth eSmart -
Key and remov eth eSmartKey
Ryou switch of fth eengin eusin gth eSmart -
Key or usin gth eStart/Sto pbutto nand
ope nth edriver's doo ror front-passenger
doo r
Rthedriver's doo ris opene dwhen th evehi-
cl eis stationary or drivin gat ver ylow speed
and th etransmissio nis in position Dor R
Under certain conditions, th eautomatic
transmissio nshift sautomatically to transmis -
sio nposition Pif th eHOLD function or
DISTRONIC PLU Sis activated. Observ eth e
information on th eHOLD function
(
Ypage 195) and on DISTRONIC PLU S
(
Ypage 187).
Engaging reverse gea r R
!Only shift theautomatic transmissio nto R
when th evehicle is stationary.
XIf th etransmissio nis in position Dor N:
push th eDIREC TSELECT lever up past th e
first poin tof resistance.
XIf th etransmissio nis in position P:depress
th ebrake peda land push th eDIREC T
SELECT lever up past th efirst poin tof
resistance.
The EC Ostart/sto pfunction is no tavailable
when revers egear is engaged. Further infor-
mation on th eEC Ostart/sto pfunction
(
Ypage 158).
162Automatic transmission
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Shifting to neutral N
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
XIf the transmission is in position Dor R:
push the DIRECT SELECT lever up or down to the first point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT
SELECT lever up or down to the first point of
resistance.
If you switch the engine off with the trans-
mission in position Ror D, the automatic
transmission shifts to Nautomatically.
With the SmartKey: if you then open the
driver's door or the front-passenger door or
remove the SmartKey from the ignition, the
automatic transmission shifts to Pautomati-
cally.
With the Start/Stop button: if you then
open the driver's door or the front-passenger door, the automatic transmission shifts to P
automatically.
If you want the automatic transmission to
remain in neutral N, e.g. when having the vehicle cleaned in an automatic car wash with
a towing system:
Using the SmartKey:
XSwitch on the ignition.
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 Smart-
Key in the ignition lock.
With the Start/Stop button:
XRemove the Start/Stop button from the
ignition lock.
XInsert the SmartKey into the ignition lock.
XSwitch on the ignition.
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 Smart-
Key in the ignition lock.
Engaging drive position D
XIf the transmission is in position Ror N:
push the DIRECT SELECT lever down past
the first point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT
SELECT lever down past the first point of
resistance.
Transmission position and drive pro-
gram display
The current transmission position and drive
program appear in the multifunction display.
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:Status symbol drive program
;Transmission position
=Gear
The arrows in the transmission position dis-
play show how and into which transmission
positions you can shift using the DIRECT
SELECT lever.
If the transmission position display in the mul- tifunction display is not working, you should
pull away carefully to check whether the
desired transmission position is engaged.
Ideally, you should select transmission posi-
tion Dand drive program Eor S.
Transmission positions
BPark position
This prevents the vehicle from roll-
ing away when stopped.
Only shift the transmission into
position Pwhen the vehicle is sta-
tionary (
Ypage 162). The parking
lock should not be used as a brake
when parking. Always apply the
electronic parking brake in addi-
tion to the parking lock in order to
secure the vehicle.
Park position Pis automatically
engaged if:
Ryou switch off the engine using
the SmartKey and remove the
SmartKey
Ryou switch off the engine using
the key or using the Start/Stop
button and open the driver's
door or front-passenger door
Rthe driver's door is opened when
the vehicle is stationary or driv-
ing at very low speed and the
transmission is in position Dor R
If the vehicle electronics are mal-
functioning, the transmission may
be locked in position P. Have the
vehicle electronics checked imme-
diately at a qualified specialist
workshop.
CReverse gear
Only shift the transmission into
position Rwhen the vehicle is sta-
tionary.
164Automatic transmission
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ANeutral
Do not shift the transmission toN
while driving. Otherwise, the auto-
matic transmission could be dam-
aged.
No power is transmitted from the
engine to the drive wheels.
Releasing the brake pedal will allow
you to move the vehicle freely, e.g. to push it or tow it.
If ESP
®is deactivated or faulty:
shift the transmission to position N
if the vehicle is in danger of skid-
ding, e.g. on icy roads.
If you switch the engine off with the
transmission in position Ror D, the
automatic transmission shifts to N
automatically.
!Rolling in neutral Ncan damage
the drive train.
7Drive
The automatic transmission
changes gear automatically. All
forward gears are available.
Driving tips
Changing gear
The automatic transmission shifts to the indi-
vidual gears automatically when it is in trans-
mission position D. This automatic gear shift-
ing behavior is determined by:
Rthe selected drive program
Rthe position of the accelerator pedal
Rthe road speed
Accelerator pedal position
Your style of driving influences how the auto- matic transmission shifts gear:
Rlittle throttle: early upshifts
Rmore throttle: late upshifts
Double-clutch function
When shifting down, the double-clutch func-
tion is active regardless of the currently selec-
ted drive program. The double-clutch function
reduces load change reactions and is condu-
cive to a sporty driving style. The sound gen-
erated by the double-clutch function depends
on the drive program selected.
Kickdown
Use kickdown for maximum acceleration.
XDepress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to a
lower gear depending on the engine speed.
XEase off the accelerator pedal once the
desired speed is reached.
The automatic transmission shifts back up.
Rocking the vehicle free
Rocking the vehicle free by shifting back and
forth between transmission positions Dand R
can help to free a vehicle that has become
stuck in mud or snow.
The vehicle's engine management restricts
switching between transmission positions D
and Rto speeds up to a maximum of 5 mph
(9 km/h).
To shift back and forth between transmission
positions Dand R, move the DIRECT SELECT
lever up and down past the point of resist-
ance.
Towing a trailer
XDrive in the middle of the engine speed
range on uphill gradients.
XManual shifting: depending on the uphill
or downhill gradient, shift into a gear
(
Ypage 167), in which the engine will run
the middle of the engine speed range.
This also applies if cruise control or
DISTRONIC PLUS is activated.
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Drive programs
Drive program I(Individual)
In drive program Ith efollowing properties of
th edrive program can be selected:
Rth edrive (engin eand transmissio nman -
agement)
Rth esuspensio n
Rthesteerin g
Rtheavailabilit yof th eEC Ostart/sto pfunc-
tion
Rth eclimat econtrol:
iTo permanentl yselec tth egear sin drive
program Iusin gth esteerin gwhee lpaddle
shifters ,selec tth eM (manual) setting fo r
th edrive.
Drive program S+ (Spor tPlus)
Drive program S+is characterized by th efol-
lowing:
Rth evehicle exhibits particularly sport ydriv-
in g characteristics .
Rthevehicle pulling away in first gear .
Rtheautomatic transmissio nshiftin gup
later.
Rth efue lconsumption possibly bein ghigher
as aresult of th elater automatic transmis -
sio nshift points .
Rthesuspensio nexhibits particularly stiff
springin gand dampin gsetting s(vehicles
wit hAI R BODY CONTROL).
Rth eEC Ostart/sto pfunction is no tavaila-
ble.
Drive program S(Sport)
Drive program Sis characterized by th efol-
lowing:
Rth evehicle exhibits sport ydrivin gcharac -
teristics .
Rthevehicle pulling away in first gear .
Rtheautomatic transmissio nshiftin gup
later.
Rth efue lconsumption possibly bein ghigher
as aresult of th elater automatic transmis -
sio nshift points .
Rthesuspensio nexhibits stiff springin gand
dampin gsetting s(vehicles wit h
AI R BODY CONTROL).
Drive program C(Comfort)
Drive program Cis characterized by th efol-
lowing:
Rth evehicle deliver scomfortable, economi-
cal handlin gcharacteristics .
Rthevehicle pulling away more gentl yin
forwar dand revers egears, unless th e
accelerator peda lis depressed fully.
Rth evehicle havin gimproved drivin gstabil-
ity, fo rexample on slipper yroad surfaces.
Roptimal fue lconsumption resultin gfrom
th eautomatic transmissio nshiftin gup
sooner. The vehicle is driven in th elow
engin espeed range and th ewheels are les s
likely to spin.
Drive program E(Economy)
Drive program Eis characterized by th efol-
lowing:
Rth evehicle exhibits comfortable, economi-
cal handlin gcharacteristics .
Rthevehicle pulling away more gentl yin
forwar dand revers egears, unless th e
accelerator peda lis depressed fully.
Rth evehicle havin gimproved drivin gstabil-
ity, fo rexample on slipper yroad surfaces.
Roptimal fue lconsumption resultin gfrom
th eautomatic transmissio nshiftin gup
sooner. The vehicle is driven in th elow
engin espeed range and th ewheels are les s
likely to spin.
Rdurin gdeceleration ,th eengin eis discon-
nected from th edrive train .The vehicle
uses kineti cenerg yand consume sles sfue l
(overrun mode).
Rth eperformanc eof air-conditionin gsystem
and heatin gare reduced.
166Automatic transmission
Driving and parking