open bonnet MERCEDES-BENZ E-CLASS CABRIOLET 2015 Owners Manual

Remote control .............................. 133
Setting the departure time ............
.134
Switching on/off (on the centre
console) ......................................... 133
Auxiliary ventilation
Activating/deactivating ................. 133
Axle load, permissible (trailer tow-
ing) ...................................................... 344 B
Back button ....................................... 264
Bag hook ............................................ 276
Ball coupling
Folding in ....................................... 211
Folding in/out ................................ 210
Folding out ..................................... 210
BAS (Brake Assist System) ................. 62
BAS PLUS (Brake Assist System
PLUS) with Cross-Traffic Assist
Function/notes ................................ 62
BAS PLUS with Cross-Traffic Assist
(Brake Assist PLUS with Cross-
Traffic Assist)
Important safety notes .................... 63
Battery (key)
Checking .......................................... 77
Important safety notes .................... 77
Replacing ......................................... 77
Battery (vehicle)
Charging ........................................ 312
Display message ............................ 239
Important safety notes .................. 310
Jump starting ................................. 313
Belt
see Seat belts
Belt tensioner
Activation ......................................... 45
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 222
Display message ............................ 242
Notes/function .............................. 200
Trailer towing ................................. 202
see Active Blind Spot Assist
BlueTEC (AdBlue ®
) ............................ .340 Bluetooth
®
Connecting another mobile
phone ............................................ 267
Searching for a mobile phone ....... .266
See also Digital Owner's Manual ... 263
Telephony ...................................... 266
Bonnet
Active bonnet (pedestrian protec-tion) ............................................... 289
Closing .......................................... .291
Display message ............................ 250
Important safety notes .................. 289
Opening ......................................... 290
Boot
Emergency release .......................... 84
Important safety notes .................... 82
Locking separately ........................... 83
Opening (automatically from
inside) .............................................. 83
Opening/closing (manually from
outside) ............................................ 83
Boot lid
Display message ............................ 250
Opening dimensions ..................... .342
Boot load (maximum) ........................ 342
Boot separator
Display message ............................ 252
General notes .................................. 94
Opening/closing .............................. 94
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 232
Notes ............................................. 341
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive .......................................... .66
Display message ............................ 236
Brakes
ABS .................................................. 62
Adaptive Brake Assist ...................... 66
BAS .................................................. 62
BAS PLUS with Cross-Traffic
Assist ............................................... 62
Brake fluid (notes) ........................ .341
Display message ............................ 230 Index
5

Cockpit
Function Page
:
Steering wheel gearshift pad-
dles 151
;
Combination switch 116
=
Instrument cluster 31
?
Horn
A
DIRECT SELECT lever 147
B
PARKTRONIC warning dis-
play
179
C
Overhead control panel 35
D
Climate control systems 123
E
Ignition lock 139
Start/Stop button 139 Function Page
F
To adjust the steering wheel
manually
106
G
To adjust the steering wheel
electrically
106
Steering wheel heating 107
H
Cruise control lever 163
I
Parking brake 159
J
Diagnostics connection 26
K
To open the bonnet 290
L
To release the parking brake 159
M
Light switch 114Cockpit
29At a glance

Function Page
:
Overhead control panel 35
;
PARKTRONIC warning dis-
play
179
=
Combination switch 116
?
Instrument cluster 31
A
Horn
B
DIRECT SELECT lever 147
C
Steering wheel gearshift pad-
dles 151
D
Light switch 114
E
To release the parking brake 159
F
To open the bonnet 290 Function Page
G
Diagnostics connection 26
H
Ignition lock 139
Start/Stop button 139
I
To adjust the steering wheel
manually
106
J
To adjust the steering wheel
electrically
106
steering wheel heating 107
K
Cruise control lever 163
L
Parking brake 159
M
Climate control systems 12330
CockpitAt a glance

A visual and audible alarm is triggered if the
alarm system is primed and you open:
R a door
R the vehicle with the emergency key element
R the boot lid
R the bonnet
X To stop the alarm with the key: press the
% or& button on the key.
The alarm stops.
or X Remove the Start/Stop button from the igni-
tion lock.
X Insert the key into the ignition lock.
The alarm stops.
X To stop the alarm using KEYLESS-GO:
grasp the outside door handle. The key must
be outside the vehicle.
The alarm stops.
or X Press the Start/Stop button on the dash-
board. The key must be inside the vehicle.
The alarm stops.
The alarm does not switch off, even if you close the open door that has triggered it, for example. Tow-away protection
Function An audible and visual alarm is triggered if your
vehicle's angle of inclination is altered while
tow-away protection is primed. This can occur if the vehicle is jacked up on one side, for exam-
ple.
Priming X
Make sure that:
R the doors are closed
R the boot lid is closed
Only then is tow-away protection primed.
X Lock the vehicle with the key or KEYLESS-GO.
Tow-away protection is primed after approx-
imately 30 seconds. Switching off X
Unlock the vehicle with the key or KEYLESS-
GO.
or X Insert the key into the ignition lock.
Tow-away protection is switched off automat-
ically.
Deactivating X
Remove the key from the ignition lock.
X Press button :.
Indicator lamp ;lights up briefly.
X Lock the vehicle with the key or KEYLESS-GO.
Tow-away protection is deactivated.
Tow-away protection remains deactivated until:
R the vehicle is unlocked again and
R a door is opened and closed again and
R the vehicle is locked again
To prevent a false alarm, deactivate tow-away
protection if you lock your vehicle and it:
R is being transported
R is being loaded onto a ferry or car transporter,
for example
R is parked on a movable surface, e.g. in a split-
level garage Interior motion sensor
Function When the interior motion sensor is primed, a
visual and audible alarm is triggered if move-
ment is detected in the vehicle interior. This can
occur if someone reaches into the vehicle inte-
rior, for example. 72
Protection against theftSafety

Replacing the front bulbs
Main-beam headlamps (static LED
headlamps) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
remove it.
X Turn bulb holder ;anti-clockwise and pull
out.
X Pull the bulb out of bulb holder ;.
X Insert the new bulb into bulb holder ;.
X Insert bulb holder ;and turn it clockwise.
X Press on housing cover :and turn it to the
right. Windscreen wipers
Switching the windscreen wipers on/
off
! Do not operate the windscreen wipers when
the windscreen is dry, as this could damage
the wiper blades. Moreover, dust that has col-
lected on the windscreen can scratch the
glass if wiping takes place when the wind-
screen is dry.
If it is necessary to switch on the windscreen wipers in dry weather conditions, always
operate them using washer fluid.
! If the windscreen wipers leave smears on
the windscreen after the vehicle has been
washed in an automatic car wash, this may be
due to wax or other residue. Clean the wind-
screen with washer fluid after an automatic
car wash. !
Intermittent wiping with rain sensor: due to
optical influences and the windscreen becom-
ing dirty in dry weather conditions, the wind-
screen wipers may be activated inadvertently. This could damage the windscreen wiper
blades or scratch the windscreen.
For this reason, you should always switch off
the windscreen wipers in dry weather. 1
$ Windscreen wipers off
2 Ä Intermittent wipe, low (rain sensor set
to low sensitivity)
3 Å Intermittent wipe, high (rain sensor
set to high sensitivity)
4 ° Continuous wipe, slow
5 ¯ Continuous wipe, fast
B í Single wipe
î To wipe with washer fluid
X Turn the key to position 1or 2in the ignition
lock.
X Turn the combination switch to the corre-
sponding position.
In the ÄorÅ position, the appropriate
wiping frequency is set automatically according
to the intensity of the rain. In the Åposition,
the rain sensor is more sensitive than in the
Ä position, causing the windscreen wiper to
wipe more frequently.
If the wiper blades are worn, the windscreen will
no longer be wiped properly. This could prevent you from observing the traffic conditions. Replacing the wiper blades
Important safety notes G
WARNING
If the windscreen wipers begin to move while
you are changing the wiper blades, you can be 120
Windscreen wipersLights and windscreen wipers

trapped by the wiper arm. There is a risk of
injury.
Always switch off the windscreen wipers and
ignition before changing the wiper blades.
! To avoid damaging the windscreen wiper
blades, make sure that you touch only the
wiper arm of the windscreen wiper.
! Never open the bonnet if a windscreen
wiper arm has been folded away from the
windscreen.
Never fold a windscreen wiper arm without a
wiper blade back onto the windscreen.
Hold the windscreen wiper arm firmly when
you change the wiper blade. If you release the
windscreen wiper arm without a wiper blade
and it falls onto the windscreen, the wind-
screen may be damaged by the force of the
impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
Replacing the wiper blades Removing the wiper blades
X Remove the key from the ignition lock or turn
the key to position 0(KEYLESS-GO).
X Fold the wiper arm away from the windscreen. X
Firmly press release knob :and pull wiper
blade ;upwards from the wiper arm in the
direction of the arrow. Fitting the wiper blades
X
Position new wiper blade :in the retainer on
the wiper arm and slide it into place in the
direction of the arrow.
The wiper blade audibly engages.
X Make sure that the wiper blade sits correctly.
X Fold the wiper arm back onto the windscreen. Windscreen
wipers
121Lights and windscreen wipers Z

Problems with the auxiliary heating/ventilation
Problem
Possible causes/consequences and
M
MSolutions FAIL
¨ The signal transmission between the transmitter and the vehicle is
faulty.
X
Change your position in relation to the vehicle, moving closer if
necessary. FAIL The auxiliary heating cannot be switched on or has switched itself off.
The starter battery is not sufficiently charged.
X Charge the starter battery. The fuel tank content is below the reserve fuel level.
X Refuel at the nearest filling station. The auxiliary heating or auxiliary ventilation is faulty.
X Have the auxiliary heating or auxiliary ventilation checked at a
qualified specialist workshop. Air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen and
the bonnet free of blockages, such as ice,
snow or leaves.
R never cover the vents or ventilation grilles in
the vehicle interior. Adjusting the air vents
Example
:
Demister vent
; Side air vent
= Thumbwheel for side air vent
X To open or close: turn thumbwheel=up or
down. Adjusting the glove compartment air
vent
! Close the air vent when heating the vehicle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu-
midification" function. Otherwise, tempera-
ture-sensitive items stored in the glove com-
partment could be damaged. 136
Air ventsClimate control

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. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognise function
restrictions 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 immedi-
ately.
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.
If the operating safety of your vehicle is
impaired, park the vehicle safely as soon as pos- sible. Contact a qualified specialist workshop.
For an overview; see the instrument cluster illus-
tration (Y page 31). Displays and operation
Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
R Cruise control activated (Y page 163):
The segments light up from the stored speed to the type-tested maximum speed.
R Variable SPEEDTRONIC activated
(Y page 165): The segments light up from the start of the
scale to the selected limit speed.
R DISTRONIC PLUS activated (Y page 168):
One or two segments in the set speed range
light up.
R DISTRONIC PLUS detects a vehicle in front:
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.
The fuel supply is interrupted to protect the
engine when the red band is reached. Outside temperature display
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Bear in mind that the outside temperature dis-
play indicates the measured air temperature
and not the road surface temperature.
The outside temperature display is in the multi-
function display (Y page 215).
The multifunction display shows changes in the
outside temperature with a delay. Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade.
The coolant temperature gauge is in the instru-
ment cluster on the left-hand side (Y page 31). Displays and operation
213On-board computer and displays Z

Engine
Display messages
Possible causes/consequences and
M
MSolutions +
Top up coolant See Top up coolant See
Owner's Manual Owner'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 Top up the coolant, observing the warning notes before doing so
(Y page 292).
X If the coolant needs topping up more often than usual, have the
engine coolant system checked at a qualified specialist workshop. ? The fan motor is faulty.
X If the coolant temperature is below 120 †, you can continue driving
to the nearest qualified specialist workshop.
X Avoid putting the engine under heavy load as you do so, e.g. driving
in mountainous terrain and stop-start traffic. ?
Coolant Stop vehi‐ Coolant Stop vehi‐
cle Switch engine cle Switch engine
off off The coolant is too hot.
A warning tone also sounds.
G WARNING
Never drive with an overheated engine. Driving when your engine is
overheated can cause some fluids which may have leaked into the
engine compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the bonnet.
There is a risk of injury.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 157).
X Wait until the engine has cooled down.
X Make sure that the air supply to the engine radiator is not blocked,
e.g. by frozen slush.
X Do not start the engine again until the display message goes out and
the coolant temperature is below 120 †. The engine may otherwisebe damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, consult a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 120 †. 238
Display messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions N The boot lid is open.
X Close the boot lid. M The bonnet is open. A warning tone also sounds.
G WARNING
The open bonnet may then block your view when the vehicle is in
motion.
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.
X Safeguard the vehicle against rolling away (Y page 157).
X Close the bonnet.
If the active bonnet (pedestrian protection) has been triggered: X Reset the bonnet (Y page 289).
X Close the bonnet. Active bonnet mal‐ Active bonnet mal‐
function See Own‐ function See Own‐
er's Manual er's Manual The active bonnet (pedestrian protection) is not active due to a mal-
function or because it has already been triggered.
X Consult a qualified specialist workshop. C At least one door is open. A warning tone also sounds.
X Close all doors. _
Rear Rear
left
leftseat
seatback‐
back‐
rest not
rest not
locked locked orRear rightRear right
seat backrest not
seat backrest not
locked locked The backrest in the rear is not engaged on the left-hand and/or right-
hand side. A warning tone also sounds.
X Push the backrest back until it engages. _
Front left seat Front left seat
backrest not backrest not
locked locked
orFront rightFront right
seat backrest not
seat backrest not
locked locked The driver's or front-passenger seat backrest is not engaged. A warn-
ing tone also sounds.
X Push the backrest back until it engages. 250
Display
messagesOn-board computer and displays