
gearshifting, the combustion engine is always
switched on.
Activating when driving with the electric motor:
X Pull the left or right steering wheel gearshift
paddle (Y page 172).
The combustion engine is switched on. Man-
ual gearshifting is activated temporarily. The
selected gear and Mappear in the multifunc-
tion display.
Activating when driving with the combustion
engine:
X Pull the left or right steering wheel gearshift
paddle (Y page 172).
Manual gearshifting is activated temporarily.
The selected gear and Mappear in the multi-
function display.
The ECO start/stop function is not available
when manually changing gear.
Further information on the manual drive pro-
gram (Y page 172).
Driving tips General driving tips
Drive carefully and maintain a suitable distance from the vehicle in front. Avoid frequent and
sudden acceleration as well as abrupt braking.
During partial electric drive, pulling away and
acceleration, the electric motor supports the
internal combustion engine.
During overrun in transmission position Dand
braking, the electric motor operates as an alter-
nator.
Further information on the ECO start/stop func-
tion (Y page 269).
Additional driving tips (Y page 194).
Stationary vehicle
If the vehicle is stopped, the combustion engine is, for the most part, switched off. Automatic
climate control continues to function. The elec-
tro-mechanically assisted steering gear allows
use of the power steering without loss of com-
fort. Acceleration
Depending on the operating mode, pulling away and driving under low load conditions are per-
formed:
R entirely by electric propulsion
R in combination with the internal combustion
engine
When accelerating rapidly under increased or
full load, increased boost mode is utilised. The
electric motor supports the combustion engine
by providing additional drive torque.
Overrun mode or braking There are three possible operating modes when
the hybrid vehicle is decelerating:
R When coasting and decelerating, energy recu-
peration is already taking place (Y page 259).
The electric motor functions as an alternator
and stores the recuperated energy in the
high-voltage battery.
R When braking gently, the electric motor
increases the deceleration of the vehicle.
Energy recuperation is increased
(Y page 259). The electric motor functions as
an alternator and stores the recuperated
energy in the high-voltage battery.
R During heavy braking, the service brake is
also used to slow down the vehicle. Both sys-
tems work together.
Driving in the city In urban traffic, energy is recuperated during
frequent deceleration phases.
The vehicle is driven by the electric motor alone
only when all conditions for the automatic
engine switch-off are fulfilled.
Further information on the automatic engine
switch-off (Y page 269).
Driving on inter-urban roads The following phases are possible when driving
on inter-urban roads:
R rapid acceleration (boost mode)
R energy recuperation
R electric operation mode
The vehicle can be driven by the electric motor
alone up to a speed of approximately 120 km/h.
Depending on the characteristics of the route,
there may be a lot of recuperated energy avail-
able. This reduces consumption and emissions. 268
Plug-in hybrid operationDriving an
d parking

Driving on the motorway
When driving on a motorway, switching off the
combustion engine has a particularly positive
effect on fuel consumption and emissions.
If the driver removes his/her foot from the
accelerator pedal in the Comfortdrive program
and a speed of 130 km/h is not exceeded, the
combustion engine is automatically switched
off.
Further information on the automatic engine
switch-off (Y page 269).
ECO start/stop function General notes
The ECO start/stop function switches the com-
bustion engine off automatically when the vehi-
cle stops moving and at speeds below
130 km/h (Y page 269).
All vehicle systems remain active, e.g. the auto-
matic climate control.
The ECO start/stop function is neither available
in the Sport drive program nor during manual
shifting.
Automatic engine switch-off
The internal combustion engine is switched off
automatically if:
R the driver removes his/her foot from the
accelerator in the Comfortdrive program and
a speed of 130 km/h is not exceeded
(Y page 269)
R the internal combustion engine has reached
its operating temperature
R the driver only slightly depresses the accel-
erator pedal in order to, for example, maintain the current speed for a limited distance
R the bonnet is closed and engaged properly
R the high-voltage battery is charged suffi-
ciently
R no malfunctions are present in the hybrid
drive system
The internal combustion engine will not be
switched off automatically, if:
R the self-diagnosis function of the engine man-
agement is active
R there is a malfunction in the hybrid drive sys-
tem R
the climate control of the vehicle requires it
R the high-voltage battery is charging
(Y page 264).
Automatic engine start
The internal combustion engine, which has been automatically switched-off, starts automatically
in certain situations, when:
R the power demand from the driver via the
accelerator pedal is greater than the electric
motor alone can provide
R the driver switches to the Sportdrive pro-
gram or to manual gearshifting
R the charge level of the high-voltage battery
has reached the lower limit
R the driver has selected the CHARGE operating
mode
Overrun mode
In overrun mode, the combustion engine is
switched off and is disconnected from the drive
train. The electric motor:
R generates low thrust, which corresponds to
the overrun mode of an active combustion
engine
R functions as an alternator and produces the
necessary energy for the auxiliary consumers
and charges the high-voltage battery
Overrun mode is available in the Comfortdrive
program at speeds below 130 km/h.
Route-based operating strategy For the route-based operating strategy, the sys-
tem factors in information about the expected
route when route guidance is active.
The information on the route is provided by the
multimedia system and includes the following:
R road categories
R speed limitations
The use of electric energy is automatically opti- mally distributed from the beginning to the end
of the journey, using information about the
route. The distribution is pre-emptive and takes
into consideration:
R the sections of the journey ahead
R the energy consumption on the whole route Plug-in hybrid operation
269Driving and parking Z

Problems with plug-in hybrid operation
Internal combustion engine Problem
Possible causes/consequences and
M
MSolutions You cannot start the
internal combustion
engine. The multifunc-
tion display shows no
display messages. The
READY indicator in the
multifunction display is
off. For example, self-diagnosis is not yet complete or the hybrid drive
system is malfunctioning.
X Switch off the ignition and turn it back on.
X Try to start the internal combustion engine again.
If the internal combustion engine still does not start:
X Consult a qualified specialist workshop. You wish to pull away,
but the ECO start/stop
function does not start
the internal combustion
engine. The READY indi-
cator in the multifunc-
tion display is off. The ECO start/stop function has failed. The warning and indicator
lamps in the instrument cluster light up.
X Shift the transmission to P.
X Switch off the ignition and turn it back on.
X Start the engine. The hybrid drive system is faulty.
X Consult a qualified specialist workshop. Recuperative Brake System
Problem
Possible causes/consequences and
M MSolutions Braking resistance is
reduced and brake pedal
travel is greater than
usual. G
Risk of accident
The Recuperative Brake System is malfunctioning. X Observe the additional display messages in the multifunction dis-
play (Y page 300).
X Observe the information regarding indicator and warning lamps in
the instrument cluster (Y page 340) . Plug-in hybrid operation
271Driving and parking Z

Useful information
i This Owner's Manual describes all models,
series and optional equipment for your vehi-
cle that were available at the time of going to
press. National variations are possible. Note
that your vehicle may not be equipped with all
of the functions described. This is also the
case for systems and functions relevant to
safety.
i Read the information on qualified specialist
workshops: (Y page 28). Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary.
You must observe the legal requirements for the country in which you are currently driving whenoperating the on-board computer.
PLUG-IN HYBRID vehicles only: G
WARNING
If the instrument cluster has failed or there is a malfunction, you may not know about
safety-related function restrictions. The oper-ating safety of your vehicle may be affected.
There is a risk of an accident.
Immediately stop the vehicle while paying
attention to the traffic conditions and consult
a qualified specialist workshop.
All vehicles, except PLUG-IN HYBRID vehi-
cles:
The on-board computer only shows messages or warnings from certain systems in the multifunc-
tion display. You should therefore make sure
your vehicle is operating safely at all times. For an overview, see the instrument cluster illus-
tration (Y page 32). Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the dis- plays and the controls in the vehicle interior can
be adjusted using the brightness control knob.
The brightness control knob is located on the
bottom left of the instrument cluster
(Y page 32).
X Turn the brightness control knob clockwise or
anti-clockwise.
If you turn the light switch to Ã,Tor
L, the brightness is dependent upon the
brightness of the ambient light.
i The light sensor in the instrument cluster
automatically controls the brightness of the
multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated. Speedometer with segments
The speedometer is divided into segments only
on vehicles with DISTRONIC PLUS.
The segments in the speedometer indicate
which speed range is available.
R Variable SPEEDTRONIC activated
(Y page 205):
The segments light up from the start of the
scale to the selected limit speed.
R DISTRONIC PLUS activated (Y page 207):
One or two segments in the set speed range
light up.
R DISTRONIC PLUS detects a vehicle in front
moving more slowly than the stored speed:
The segments between the speed of the vehi- cle in front and the stored speed light up. Rev counter
! Do not drive in the overrevving range. Doing
so will damage the engine.
The red band in the rev counter indicates the
engine's overrevving range. Displays and operation
281On-board computer and displays Z

Possible displays in the multifunction dis-
play:
R ZGearshift recommendation, when shifting
manually (Y page 172)
R j Active Parking Assist (Y page 228)
R ¯ Cruise control (Y page 203)
R LIM
LIM SPEEDTRONIC (Y page 205)
R READY
READY PLUG-IN HYBRID operation activated
(PLUG-IN HYBRID vehicles) (Y page 266)
R HYBRID
HYBRID operating mode, additional operating
mode displays (PLUG-IN HYBRID vehicles)
(Y page 261)
R è Electric range (PLUG-IN HYBRID vehi-
cles) (Y page 261)
R LOW RANGE
LOW RANGE LOW RANGE off-road gear
(Y page 255)
R _ Adaptive Highbeam Assist Plus
(Y page 126)
R è ECO start/stop function (Y page 161)
R ë HOLD function (Y page 219)
R a DISTRONIC PLUS Steering Assist and
Stop&Go Pilot (Y page 214)
R 120 km/h!
120 km/h! Maximum permissible speed
exceeded (only for certain countries)
R DSR
DSR Downhill Speed Regulation
(Y page 252) Menus and submenus
Menu overview
Press the =or; button on the steering
wheel to call up the menu bar and select a menu.
Operating the on-board computer (Y page 282).
Depending on the equipment fitted in the vehi-
cle, you can call up the following menus:
R Trip
Trip menu (Y page 284)
R Navi Navi menu (navigation instructions)
(Y page 286)
R Audio
Audio menu (Y page 287)
R Tel
Tel menu (telephone) (Y page 288)
R Assist.
Assist. menu (assistance) (Y page 289)
R Serv.
Serv. menu (Y page 291)
R Settings
Settings menu (settings) (Y page 292)
R ON&OFFROAD
ON&OFFROAD menu (Ypage 297)
R AMG AMG menu (Mercedes-AMG vehicles)
(Y page 297) Trip menu
Standard display X
Press and hold the %button on the steer-
ing wheel until the Trip Tripmenu with trip
meter :and total distance recorder ;
appears.
Trip computer "From start" or "From
reset" :
Distance
; Driving time
= Average speed
? Average fuel consumption
X Press the =or; button on the steering
wheel to select the Trip Tripmenu.
X Press the 9or: button to select
From start
From start orFrom reset
From reset.
The values in the From
Fromstart
start submenu are cal-
culated from the start of a journey, whilst the
values in the From reset
From resetsubmenu are calcu-
lated from the last time the submenu was reset
(Y page 285).
The From start
From start trip computer is automatically
reset if:
R the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9,999 kilometres have been exceeded.
The From reset From reset trip computer is automatically
reset if the value exceeds 9,999 hours or
99,999 kilometres. 284
Menus and submenusOn-board computer and displays

Accepting a call
If someone calls you when you are in the
Tel
Tel
menu, a display message appears in the multi-
function display.
You can accept a call at any time, even if you are
not in the Tel
Tel menu.
X Press the 6button on the steering wheel
to accept an incoming call.
Rejecting or ending a call You can end or reject a call even if you are not in
the Tel
Tel menu.
X Press the ~button on the steering wheel
to reject or end an incoming call.
Selecting an entry from the telephone
book X
Press the =or; button on the steering
wheel to select the Tel
Tel menu.
X Press the 9,:ora button to
switch to the phone book.
X Authorise access to the phone book on the
phone.
X Press the 9or: button to select the
desired name.
or
X To start rapid scrolling: press and hold9
or : for longer than one second.
Rapid scrolling stops when you release the
button or reach the end of the list.
X If only one telephone number is stored for
a name: press the 6ora button to
start dialling.
or
X If there is more than one number for a
particular name: press the6ora
button to display the numbers.
X Press the 9or: button to select the
number you want to dial. X
Press the 6ora button to start dial-
ling.
or
X To exit the telephone book: press the~
or % button.
Redialling The on-board computer saves the last names or
numbers dialled in the redial memory.
X Press the =or; button on the steering
wheel to select the Tel Telmenu.
X Press the 6button to switch to the redial
memory.
X Press the 9or: button to select the
desired name or number.
X Press the 6ora button to start dial-
ling.
or X To exit the redial memory: press the~
or % button. Assistance menu
Introduction Depending on the equipment fitted in the vehi-
cle, you have the following options in the
Assist. Assist. menu:
R Showing the assistance graphic
(Y page 290)
R Activating/deactivating the Traffic Sign
Assist display (Y page 290)
R Activating/deactivating Steering Assist and
Stop&Go Pilot (Y page 290)
R Activating/deactivating PRE-SAFE ®
Brake
(Y page 290)
R Activating/deactivating COLLISION PREVEN-
TION ASSIST PLUS (Y page 291)
R Activating/deactivating ATTENTION ASSIST
(Y page 291) Menus and sub
menus
289On-board computer and displays Z

Stopping the RACETIMER
X
Press the %button on the steering wheel.
X Confirm Yes
Yes with a.
The RACETIMER interrupts timing if you stop the
vehicle and turn the key to position 1in the igni-
tion lock. If you turn the key to position 3and
then press ato confirm Start
Start, timing is
continued.
Resetting the current lap
X Stop the RACETIMER.
X Press =or; to select Reset Lap
Reset Lap.
X Press ato reset the lap time to "0".
Deleting all laps If you switch off the engine, the RACETIMER is
reset to "0" after 30 seconds. All laps are
deleted.
You cannot delete individual stored laps. If you
have stopped 16 laps, the current lap does not
have to be reset.
X Reset the current lap.
X Press ato confirm Reset Reset.
Reset Race Timer?
Reset Race Timer? appears in the multi-
function display.
X Press :to select Yes
Yes and confirm with
a.
All laps are deleted. Overall evaluation :
RACETIMER overall evaluation
; Total time driven
= Average speed
? Distance covered
A Maximum speed
This function is shown if you have stored at least one lap and stopped the RACETIMER.
X Press =or; on the steering wheel to
select the AMG AMGmenu.
X Press the 9button repeatedly until the
overall evaluation is shown.
Lap evaluation :
Lap
; Lap time
= Average lap speed
? Lap length
A Top speed during lap
This function is only available if you have stored
at least two laps and have stopped the RACE-
TIMER.
X Press the =or; button on the steering
wheel to select the AMG
AMG menu.
X Press the 9button repeatedly until the lap
evaluation is shown.
Each lap is shown in a separate submenu. The fastest lap is indicated by flashing symbol :.
X Press the 9or: button to select a dif-
ferent lap evaluation. Menus and submenus
299On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions !
Parking brake inop‐ Parking brake inop‐
erative erative The yellow
!warning lamp lights up. The red !indicator lamp
flashes for about ten seconds after the electric parking brake has been applied or released. It then goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-
voltage or undervoltage.
X Rectify the cause of the overvoltage or undervoltage, e.g. by charg-
ing the battery or restarting the engine.
X Apply or release the electric parking brake.
If the electric parking brake still cannot be applied or released: X Switch off the ignition and turn it back on.
X Apply or release the electric parking brake.
If the electric parking brake still cannot be released: X Consult a qualified specialist workshop.
If it is still not possible to apply the electric parking brake:
X Consult a qualified specialist workshop. The yellow
!warning lamp lights up and the red !indicator
lamp flashes.
It is not possible to apply the electric parking brake manually.
X Shift the transmission to position P.
X Consult a qualified specialist workshop. J
Check brake fluid Check brake fluid
level level There is insufficient brake fluid in the brake fluid reservoir. In addition,
the J warning lamp in the instrument cluster lights up and a warn-
ing tone sounds.
G WARNING
Braking efficiency may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Safeguard the vehicle against rolling away (Y page 191).
X Consult a qualified specialist workshop.
X Do not top up the brake fluid. This does not correct the fault. #
Check Check
brake
brakepad
padwear
wear The brake pads/linings have reached their wear limit.
X Consult a qualified specialist workshop. G
Inoperative
Inoperative One or more main features of the Mercedes-Benz Contact system are
malfunctioning.
X Consult a qualified specialist workshop. 306
Display
messagesOn-board computer and displays