Problems with the engine
ProblemPossible causes/consequences andMSolutions
The engine does not
start.The HOLD function or DISTRONIC PLUS is activated.
XDeactivate the HOLD function (Ypage 191) or DISTRONIC
PLUS (
Ypage 182).
XTry to start the engine again.
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 153). 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 559).
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.
XAllow the starter motor to cool down for approximately two
minutes.
XTry to start the engine again.
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.
158Driving
Driving and parking
The selector lever always returns to its origi-
nal position. The current transmission posi-
tionP,R, Nor Dappears in the transmission
position display in the multifunction display.
Engaging park position P
XWhen the vehicle is stationary, depress the
brake pedal.
XPress the Pbutton in the center console.
iPark position Pis disengaged if you:
Rdepress the brake pedal and
Rpush the selector lever forwards or back
to the first point of resistance
The transmission shifts to neutral N.
Park position Pis engaged automatically and
the electric parking brake applied:
Rif you remove the SmartKey from the igni-
tion lock
Rif you switch off the engine using the Start/
Stop button and open the driver's or front-
passenger door
Rif you open the driver's door while traveling
at low speed in transmission position Dor
R
Under certain conditions, the automatic
transmission shifts automatically to transmis-
sion position Pif the HOLD function or
DISTRONIC PLUS is activated. Observe the
information on the HOLD function
(
Ypage 192) and on DISTRONIC PLUS
(
Ypage 186).
Engaging reverse gear R
!Only shift the automatic transmission to R
when the vehicle is stationary.
XWhen the vehicle is stationary, depress the
brake pedal.
XPush the selector lever forwards past the
first point of resistance.
The ECO start/stop function is not available
when reverse gear is engaged. Further infor- mation on the ECO start/stop function
(
Ypage 155).
Shifting to neutral N
XWhen the vehicle is stationary, depress the
brake pedal.
XPush the selector lever forwards or back to
the first point of resistance.
Remaining in 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.
Using the SmartKey:
RMake sure that the ignition is switched on.
RWhen the vehicle is stationary, depress the
brake pedal and keep it depressed.
RShift to neutral N.
RRelease the brake pedal.
RIf the electric parking brake is engaged,
release it.
RSwitch off the ignition and leave the Smart-
Key in the ignition lock.
160Automatic transmission
Driving and parking
With KEYLESS-GO:
RMake sure that the ignition is switched on.
RWhen the vehicle is stationary, depress the
brake pedal and keep it depressed.
REngage park positionP.
RRelease the brake pedal.
RRemove the Start/Stop button from the
ignition lock.
RInsert the SmartKey into the ignition lock.
RSwitch on the ignition.
RDepress the brake pedal and keep it
depressed.
RShift to neutralN.
RRelease the brake pedal.
RIf the electric parking brake is engaged,
release it.
RSwitch off the ignition and leave the Smart-
Key in the ignition lock.
Shifting to transmission position D
XWhen the vehicle is stationary, depress the
brake pedal.
XPush the selector lever back past the first
point of resistance.
Transmission position and drive pro-
gram display
Display in transmission positions P, R
and N
:Transmission position: currently selected
transmission position will be highlighted
;Drive program
Mercedes-AMG vehicles: in addition to
drive program ;being shown in the multi-
function display, the currently selected drive program is indicated in red on the drive pro-
gram selector (
Ypage 163).
Display when in transmission position D
:Transmission position
;Gear
=Drive program
When you have selected drive program Eor S,
the transmission position is displayed in posi-
tion :. The selected gear is displayed in
position ;.
Display when in transmission position D
and drive program M
:Gear
;Drive program (M)
Automatic transmission161
Driving and parking
Z
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. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
Vehicles with automatic transmission
XWith the SmartKey: shift the transmission
to position P.
XTurn the SmartKey to position 0in the igni-
tion lock and remove it.
The immobilizer is activated.
XWith KEYLESS-GO: press the KEYLESS-
GO Start/Stop button (
Ypage 152).
The engine stops and all the indicator
lamps in the instrument cluster go out.
When the driver's door is closed, this cor-
responds to key position 1. When the driv-
er's door is open, this corresponds to key
position 0(
Ypage 151).
If you try to switch off the engine when the
transmission is not in position P, a message
appears in the multifunction display. A signal
sounds.
iThe engine can be switched off while the
vehicle is in motion by pressing and holding the Start/Stop button for about three sec-
onds. This function operates independently
of the ECO start/stop automatic 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 a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or there is a malfunction
in the system, it may not be possible to apply
the released parking brake.
XIf this is the case, only park the vehicle on
level ground and secure it to prevent it roll-
ing away.
XShift the automatic transmission to posi-
tion P.
It may not be possible to release an applied
parking brake if the on-board voltage is low or
there is a malfunction in the system. Contact a qualified specialist workshop.
iThe electric parking brake performs a
function test at regular intervals while the
engine is switched off. The sounds that can
be heard while this is occurring are normal.
172Parking
Driving and parking
!Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately, but
drive on for a short while. This allows the air-
flow to cool the brakes more quickly.
Wet roads
If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has been washed or driven through deep water.
You then have to depress the brake pedal
more firmly. Maintain a greater distance from
the vehicle in front.
After driving on a wet road or having the vehi- cle washed, brake firmly while paying atten-
tion to the traffic conditions. This will warm up
the brake discs, thereby drying them more
quickly and protecting them against corro-
sion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt
residue may form on the brake discs and
brake pads. This can result in a significantly
longer braking distance.
RBrake occasionally to remove any possible
salt residue. Make sure that you do not
endanger other road users when doing so.
RCarefully depress the brake pedal and the
beginning and end of a journey.
RMaintain a greater distance to the vehicle
ahead.
Servicing the brakes
!If the brake warning lamp lights up in the
instrument cluster and you hear a warning
tone even though the parking brake has
been released, the brake fluid level may be too low. Observe additional warning mes-
sages in the multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immedi-
ately. This work should be carried out at a
qualified specialist workshop.
!As the ESP®system operates automati-
cally, the engine and the ignition system
must be switched off (SmartKey in position
0 or 1in the ignition lock or Start/Stop
button in position 0or 1) when:
Rtesting the parking brake on a brake
dynamometer.
Ryou intend to have the vehicle towed with
the front axle raised.
Braking maneuvers triggered automatically by ESP
®may seriously damage the brake
system.
All checks and maintenance work on the
brake system must be carried out at a quali-
fied specialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the function-
ality of your brakes at regular intervals.
Information on BAS (Brake Assist)
(
Ypage 72).
Mercedes-Benz recommends that you only
have brake pads/linings installed on your
vehicle which have been approved for
Mercedes-Benz vehicles or which correspond
to an equivalent quality standard. Brake
pads/linings which have not been approved
for Mercedes-Benz vehicles or which are not
of an equivalent quality could affect your vehi-
cle's operating safety.
Mercedes-Benz recommends that you only
use brake fluid that has been specially
approved for your vehicle by Mercedes-Benz,
or which corresponds to an equivalent quality
standard. Brake fluid which has not been
approved for Mercedes-Benz vehicles or
Driving tips177
Driving and parking
Z
Make sure that nobody is in the vicinity of the
wheel arch or the underbody when you switchoff the engine.
Setting raised level
XMake sure that the engine is running or thatit has been switched off by the ECO start/
stop function.
XMake sure that a speed of 75 mph
(120 km/h) is not exceeded.
XIf indicator lamp ;is not lit:press but-
ton :.
If the engine has been switched off by the
ECO start/stop function, it is now restar-
ted.
Indicator lamp ;lights up. The vehicle
height is adjusted to raised level.
Setting the normal level
XMake sure that the engine is running or that it has been switched off by the ECO start/
stop function.
XIf indicator lamp ;is lit:press but-
ton :.
Indicator lamp ;goes out. The vehicle is
adjusted to normal level.
The "Raised level" setting is canceled if you:
Rare driving faster than approximately
75 mph (120 km/h).
Rdrive for approximately three minutes at a
speed over 50 mph (80 km/h).
Suspension tuning
General notes
The electronically controlled ABC suspension system features improved driving dynamics
and ride comfort.
The ABC suspension system is tuned individ-
ually to each wheel and depends on:
Rthe road surface condition, e.g. bumps
Rthe vehicle load
Ryour individual selection of the sporty or
comfort button
Your selection remains stored even if you
remove the SmartKey from the ignition lock.
Selecting sports tuning
Driving systems195
Driving and parking
Z
XMake sure that the engine is running or thatit has been switched off by the ECO start/
stop function.
XIf indicator lamp ;is not lit:press but-
ton :.
Indicator lamp ;lights up. Sports suspen-
sion tuning is selected.
The ABC Active Body Control SPORT
message appears in the multifunction dis-
play.
The firmer setting of the suspension tuning in
sports mode ensures even better contact
with the road. Select this mode if you prefer a
firmer suspension setting.
Selecting comfort tuning
XMake sure that the engine is running or that it has been switched off by the ECO start/
stop function.
XIf indicator lamp ;is not lit:press but-
ton :.
Indicator lamp ;lights up. Comfortable
suspension tuning is selected.
The ABC
ActiveBodyControlCOMFORT
message appears in the multifunction dis-
play.
In comfort mode, the driving characteristics
of your vehicle are more comfortable. Select
this mode if you favor a more comfortable
driving style.
Driving conditions menu in the
COMAND display
You can display some driving systems and
additional information in the COMAND dis-
play.
XMake sure that the SmartKey is in position
2 in the ignition lock.
XMake sure COMAND is switched on
(
Ypage 297).
XPress button :.
The corresponding displays appear in the
COMAND display.
Example: displays in the COMAND display
:
Selection of raised level (Ypage 194)
;Activity of ABC spring struts for roll and
pitching support
=Selected suspension setting, i.e. sporty or
comfortable (
Ypage 195)
?G-FORCE (longitudinal and lateral accel-
eration)
ACurrent vehicle level
196Driving systems
Driving and parking
Active Body Control(Mercedes-AMG
vehicles)
Vehicle level
Genera lnotes
In order to reduce fuel consumption and
improve th edriving dynamics, th evehicl eis
lowered as it sspee dincreases. In th eSP ORT
suspension setting ,it is lowered by up to
0. 5in (13 mm) and in COMF ORTby up to
0. 2in (5 mm). As th espee dis reduced, th e
vehicl eis raised up to th eset vehicl eheight .
Selec tth e"Normal" setting for normal road
surfaces and "Raised "for driving wit hsnow
chain sor on particularly poor road surfaces.
Important safety notes
The vehicl eis slightly lowered when th e
engin eis switched off .
GWARNING
When th evehicl eis bein glowered, people
could become trapped if their limb sare
between th evehicl ebody and th ewheels or
underneat hth evehicle. There is aris kof
injury.
Mak esur eno on eis underneat hth evehicl eor
in th eimmediat evicinity of th ewhee larches
when th evehicl eis bein glowered.
Setting raised level
XMak esur ethat th eengin eis runnin gor that
it has been switched off by th eECO start /
stop function .
XMakesur ethat aspee dof 75 mph
(12 0km/ h)is not exceeded.
XIf icon ;is not shown: press=
or ; on the steering wheel to select the
DriveAssist
menu.
XPress the 9or: button to select
Vehicle Level
.
XPress the abutton.
The following message appears: Vehicle
Level Press 'OK' to Raise.
XPress theabutton.
If the engine has been switched off by the
ECO start/stop function, it is now restar-
ted.
Icon ;appears. The vehicle height is
adjusted to raised level.
Setting the normal level
XMake sure that the engine is running or that it has been switched off by the ECO start/
stop function.
XIf icon ;is shown: press=or; on
the steering wheel to select the DriveAs‐
sistmenu.
XPress the9or: button to select
Vehicle Level
.
XPress the abutton.
The following message appears: Vehicle
Level Press 'OK' to Lower.
XPress theabutton.
Icon ;is faded out. The vehicle is adjusted
to normal level.
Driving systems197
Driving and parking
Z