2014 MERCEDES-BENZ E-Class CABRIOLET engine

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 25).Important safety notes
G
WARNING
If you operate information systems and
communication equipment integrated in the
vehicle while driving, you will be distracted
from traffic conditions. You could also lose
control of the vehicle. There is a risk of an
accident.
Only operate the equipment when the traffic
situatio npermits .Ifyou are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the
equipment when the vehicle is stationary. G
WARNING
If the instrument cluster has failed or
malfunctioned, you may not recognize
function restrictions in systems relevant to
safety. The operating safety of your vehicle
may be impaired. There is a risk of an
accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop
immediately.
You must observe the legal requirements for
the country in which you are currently driving
when operating the on-board computer.
The on-board computer only shows messages
or warnings from certain systems in the multifunction display
.You should therefore
make sure your vehicle is operating safely at
all times. Otherwise, a vehicle that is not
operating safely may cause an accident.
For an overview, see the instrument panel
illustration (Y page 31). Displays and operation
Coolant temperature display
G
WARNING
Opening the hood when the engine is
overheated or when there is a fire in the
engine compartment could expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
! Adisplay message is shown if the coolant
temperature is too high.
If the coolant temperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolan ttemperature gauge is in the
instrument cluster on the left-hand side
(Y page 31).
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †). Tachometer
! Do not drive in the overrevving range, as
this could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protec tthe
engine when the red band is reached. 232
Displays and operationOn-board computer and displays

The assistance graphic can display the status
of and information from other driving systems
or driving safety systems.
The assistance graphic shows:
R the 0002 symbol when ATTENTION ASSIST
(Y page 220) is deactivated.
R the lane markings as bright lines when Lane
Keeping Assist (Y page 223) or Active Lane
Keeping Assist (Y page 228) is activated.
R the 0001 symbol when the distance
warning function (Y page 71) is
deactivated.
R the 0001 symbol when PRE-SAFE ®
Brake
(Y page 76) is deactivated.
Deactivating/activating ESP ®i
Observe the "Importan tsafety notes"
section in the description of ESP
(Y page 74). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer
stabilizes the vehicle .There is an increased
risk of skidding and an accident.
Only deactivate ESP ®
in the situations
described in the following.
It may be best to deactivate ESP ®
in the
following situations:
R when using snow chains
R in deep snow
R on sand or gravel
For further information about ESP ®
, see
(Y page 74).
X Start the engine.
X Press the 0002or0005 button on the
steering wheel to select the DriveAssistmenu.
X Press the 0003or0004 button to select
ESP . X
Press the 000Bbutton.
The current selection is displayed.
X To activate/deactivate: press the000B
button again.
ESP ®
is deactivated if the 0015warning lamp
in the instrumentc luster lights up
continuously when the engine is running.
If the 000C warning lamp and the 0015
warning lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 279).
Observe the information on display messages
(Y page 249).
Activating/deactivating PRE-SAFE ®
Brake PRE-SAFE
®
Brake is only available in vehicles
with DISTRONIC PLUS.
X Press 0002or0005 on the steering wheel
to selec tthe DriveAssist menu.
X Press the 0003or0004 button to select
PRE-SAFE Brake .
X Press the 000Bbutton.
The current selection is displayed.
X To activate/deactivate: press the000B
button again.
When PRE-SAFE ®
Brake is deactivated, the
assistance graphic shows the 0001symbol
in the multifunction display.
For more information on PRE-SAFE ®
Brake,
see (Y page 76).
Activating/deactivating the distance
warning function X
Press the 0002or0005 button on the
steering wheel to select the DriveAssist menu.
X Press 0003or0004 to select Distance Warning . Menus and submenus
241On-board computer and displays Z

X
Press 000Bto confirm.
X Press the 0004or0003 button to set the
color to SOLAR ,
NEUTRAL or
POLAR .
X Press the 000Bor0007 button to save the
setting.
Activating/deactivating surround
lighting and exterior lighting delayed
switch-off
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press 0004or0003 to select the
Surround Lighting function.
If the Surround Lighting function is
activated, the light cone and the area
around the vehicle are displayed in orange
in the multifunction display.
X Press the 000Bbutton to save the setting.
Deactivating delayed switch-off of the
exterior lighting temporarily:
X Before leaving the vehicle, turn the
SmartKey to position 0in the ignition lock.
X Turn the SmartKey to position 2in the
ignition lock.
The exterior lighting delayed switch-off is
deactivated.
Delayed switch-off of the exterior lighting is
reactivated the next time you start the
engine.
If you have activated the SurroundLighting function and the light switch is set
to 0004, the following functions are activated
when it is dark:
R surround lighting: the exterior lighting
remains lit for 40 seconds after unlocking
with the SmartKey. If you start the engine,
the surround lighting is switched off and
automatic headlamp mode is activated
(Y page 135).
R exterior lighting delayed switch-off: the
exterior lighting remains lit for 60 seconds after the engine is switched off.
If you close all the doors and the trunkl
id,
the exterior lighting goes off after
5s econds.
i Depending on your vehicle's equipment,
when the surround lighting and delayed
switch-off exterior lighting are on, the
following light up:
R Parking lamps
R Low-beam headlamps
R Daytime running lamps
R Side marker lamps
R Surround lighting in the exterior mirrors
Activating/deactivating the interior
lighting delayed switch-off
If you activate the Light. Delay function,
the interior lighting remains on for
20 seconds after you remove the key from the
ignition lock.
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Light. Delay function.
If the Light. Delay function has been
switched on, the vehicle interior is
displayed in orange in the multifunction
display.
X Press the 000Bbutton to save the setting.
Vehicle Activating/deactivating the automatic
door locking mechanism
X
Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press 0004or0003 to select the Vehicle submenu.
X Press 000Bto confirm. Menus and submenus
245On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
00050017
000C
Inoperative See
Operator's Manual EBD (electronic brake force distribution), ABS, ESP
®
, BAS, PRE-
SAFE ®
, the HOLD function and hill start assist are unavailable due
to a malfunction.
BAS PLUS, COLLISION PREVENTION ASSIST and
PRE-SAFE ®
Brake may also have failed.
In addition, the 000C,0015and0017 warning lamps ligh tup in
the instrument cluster and a warning tone sounds.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The fron tand rea rwheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 0004(USA
only)0005(Canada
only)
Please Release Parking Brake You are driving with the parking brake applied.
Awarning tone also
sounds.
X Release the parking brake. 000B(USA
only)0005
(Canada
only)
Brake Immediately A malfunction has occurred while the HOLD function or
DISTRONIC PLUS is active.
At
one may also sound at regular intervals. If you attempt to lock
the vehicle, the tone becomes louder.
You cannot start the engine.
X Paying attention to the traffic situation, immediately depress the
brake pedal firmly and hold until the display message
disappears.
X Secure the vehicle against rolling away (Y page 182).
You can restart the engine. Display messages
251On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
PRE-SAFE
Functions
Currently Limited
See Operator's
Manual PRE-SAFE
®
brake or Adaptive Brake Assist of COLLISION
PREVENTION ASSIST is temporarily not operational.
Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiato rgrill and the bumper are dirty.
R the rada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
When the causes stated above no longer apply, the display
message disappears.
PRE-SAFE ®
Brake is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 182).
X Clean the sensors in the radiator grill and the bumper
(Y page 323).
X Restart the engine. PRE-SAFE
Functions Limited
See Operator's
Manual PRE-SAFE
®
brake or Adaptive Brake Assist of COLLISION
PREVENTION ASSIST is not available due to a malfunction. BAS
PLUS or the distance warning signal may also have failed.
X Visit a qualified specialist workshop. 0013
Malfunction
Service Required G
Risk of injury
Cabriolet: the roll bars are defective.
X Visit a qualified specialist workshop immediately. 001D
SRS Malfunction
Service Required There is a malfunction in the SRS (Supplemental Restraint
System). The
001Dwarning lamp also lights up in the instrument
cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
For further information about SRS, see (Y page 43). Display messages
253On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
0002
Auto
Lamp Function
Inoperative The ligh
tsensor is defective.
X Visit a qualified specialist workshop. 0002
Switch Off Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to 0004.Adaptive Highbeam
Assist Currently
Unavailable See
Operator's Manual Adaptive Highbeam Assist is deactivated and temporarily
inoperative. Possible causes are:
R
the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
X Clean the windshield.
If the system detects that the camera is fully operational again,
the Adaptive Highbeam Assist Now Available message is
displayed.
Adaptive Highbeam Assist is operational again. Adaptive Highbeam
Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Engine
Display messages Possible causes/consequences and
0001 Solutions
000F
Check Coolant
Level See
Operator's Manual The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so
(Y page 315).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. 000E The fan moto
ris faulty.
X At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. 260
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
000E
Coolant Too Hot
Stop Vehicle Turn
Engine Off The coolan
tis too hot.
Aw arning tone also sounds.
G WARNING
Do no tdrive when youre ngine is overheated. Thi scan cause some
fluids which may have leaked into the engine compartmen tto
catch fire.
Stea mfrom the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 182).
X Waitu ntil the engine has cooled down.
X Make sure tha tthe air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). Display messages
261On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
000B The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull ove rand stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 182).
X Ope nthe hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit a qualified specialist workshop. 0014
Check Engine Oil
At Next Refueling The engine oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level when next refueling, at the latest
(Y page 313).
X If necessary, add engine oil (Y page 314).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 0012
Fuel Level Low The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 262
Display messagesOn-board computer and displays