2012 MERCEDES-BENZ E-CLASS CABRIOLET check engine

Resetting the service interval dis-
play ................................................ 311
Service message ............................ 311
Special service requirements ........
.311
ATA (Anti-Theft Alarm system)
Activating/deactivating ...................71
Function .......................................... .71
Interior motion sensor .....................72
Switching off the alarm ....................71
Tow-away protection ........................ 71
ATTENTIO NASSIST
Activating/deactivating .................241
Display message ............................ 262
Function/notes ............................. 208
Authorised workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 258
see Lights
Automatic engine start (ECO start/
stop function) .................................... 164
Automatic engine switch-off (ECO
start/stop function) ..........................163
Automatic headlamp mode ..............123
Automatic transmission Accelerator pedal position .............169
Automatic drive program ...............170
Changing gea r............................... 168
Display message ............................ 270
Driving tips .................................... 169
Emergency running mode ..............173
Kickdow n....................................... 169
Manual drive program ....................171
Overview ........................................ 167
Problem (fault) ............................... 173
Progra mselecto rbutton ................ 169
Pulling away ................................... 161
Releasing the parking lock man-
ually ............................................... 173
Selector leve r................................ 168
Shift range s................................... 170
Starting the engine ........................160
Steering wheel gearshift paddle s... 170
Trailer towing ................................. 169
Transmissio nposition display ........168
Transmission positions ..................168
Automatic transmission emer-
gency running mode .........................173Auxiliary heating
Activating/deactivating .................149
Activating/deactivating (on the
centre console ).............................. 150
Display message ............................ 272
Important safety notes ..................149
Problem (display message) ............153
Remote control .............................. 150
Setting ........................................... 246
Setting the departur etime ............ .151
Auxiliary ventilation
Activating/deactivating .................149
Activating/deactivating (on the
centre console ).............................. 150
Problem (display message) ............153
Remote control .............................. 150
Axle load, permissible (traile rtow-
ing) ...................................................... 381 B
Bag hook ............................................ 290
Ball coupling Folding in ....................................... 223
Folding out ..................................... 222
BAS (Brake Assist System) .................65
BAS PLUS (Brake Assist System
PLUS) .................................................... 65
Battery (key) Checking .......................................... 79
Important safety notes ....................79
Replacing ......................................... 79
Battery (vehicle)
Charging ........................................ 330
Display message ............................ 261
Important safety notes ..................328
Jump starting ................................. 331
Belt
see Seat belt
Belt force limiters (activation) ...........41
Belt tensioner Activation ......................................... 41
Function .......................................... .52
Blind Spo tAssist
Activating/deactivating .................241
Display message ............................ 264 Index
5

Changing bulbs
Dipped-beam headlamps ...............134
Important safety notes ..................132
Main-beam headlamps ................... 134
Overview of bul btypes .................. 133
Parking lamps (front) .....................134
Standing lamps .............................. 134
Turn signals (front) ......................... 135
Child-proof locks
Important safety notes ....................63
Children
child seat lock .................................. 55
In the vehicle ................................... 53
Restraint systems ............................ 53
Child seat
Automatic recognition .....................56
ISOFIX .............................................. 57
On the front-passenger sea t............ 55
Problem (malfunction) .....................60
Recommendations ...........................62
Suitable positions ............................ 60
Top Tether ....................................... 58
Child seat lock ..................................... 55
Cigarette lighter ................................ 294
Cleaning Mirro rturn signal ........................... 316
Trailer tow hitch ............................. 317
Climate control
Auxiliary heating/ventilation .......... 149
Controlling automatically ...............144
Convenience opening/closing
(air-recirculatio nmode) ................. 148
Cooling with aird ehumidification..143
Demisting the windows .................. 147
Demisting the windscreen .............146
Important safety notes ..................140
Indicator lamp ................................ 144
Information on using
THERMOTRONIC automatic cli-
mate control .................................. 143
Notes on using THERMATIC auto-
matic climate control .....................141
Overview of systems ......................140
Problems with cooling with air
dehumidification ............................ 144
Problem with the rear window
heating .......................................... 147
Rea rcontrol panel ......................... 142Setting the aird
istribution.............145
Setting the airflow .........................146
Setting the airv ents...................... 153
Setting the climate mode .............. .144
Setting the temperature ................144
Switching air-recirculation mode
on/off ............................................ 147
Switching on/off ........................... 143
Switching residual hea ton/off ......148
Switching the rear window heat-
ing on/off ...................................... 147
Switching the ZONE function on/
off .................................................. 146
THERMATIC automatic climate
control (2-zone) ............................. 141
THERMOTRONIC (3-zone) auto-
matic climate control .....................142
Cockpit
Overview .......................................... 28
see Instrument cluster
COMAND display
Cleaning ......................................... 318
COMAND Online
see separate operating instructions
Combination switch ..........................126
Consumption statistics (on-board
computer) .......................................... 233
Convenience closing feature ..............90
Convenience opening/closing (air-
recirculation mode) ........................... 148
Convenience opening feature ............90
Coolan t(engine)
Checkin gthe level ......................... 310
Display message ............................ 259
Important safety notes ..................376
Temperature gauge ........................ 230
Warning lamp ................................. 281
Cooling
see Climate control
Cornering light function
Display message ............................ 256
Function/notes ............................. 128
Crash-responsive emergency light-
ing ....................................................... 132
Cruise control Activation conditions .....................183
Cruise control leve r....................... 183
Deactivating ................................... 185 Index
7

Emergency spare wheel
Important safety note s.................. 363
Points to remember .......................363
Storage location ............................ 363
Technical data ............................... 364
Emergency unlocking
Vehicle ............................................. 84
Engine
Display message ............................ 259
ECO start/stop function ................162
Engine number ............................... 371
Jump-starting ................................. 331
Running irregularl y......................... 165
Starting problems ..........................165
Starting the engine with the key ....160
Starting with KEYLESS GO .............161
Stopping ........................................ 178
Tow-starting (vehicle) ..................... 335
Warning lamp (engine diagnos-
tics) ............................................... 280
Engine electronics
Notes ............................................. 369
Problem (fault) ............................... 165
Engine oil
Additives ........................................ 376
Checking the oil level ..................... 308
Checking the oil level using the
dipstick .......................................... 309
Display message ............................ 261
Filling capacity ............................... 376
Notes about oil grades ................... 375
Notes on oil level/consumption ....308
Topping up ..................................... 309
Viscosity ........................................ 376
Environmental protection
Returning an end-of-life vehicle .......21
ESP ®
(Electronic Stability Pro-
gram) Deactivating/activating .................240
Deactivating/activating (notes) .......67
Display message ............................ 250
ETS .................................................. 67
Function/notes ................................ 67
Important safety guidelines .............67
Trailer stabilisatio n.......................... 68
Warning lamp ................................. 278
ETS (Electronic Traction System) ....... 67Exhaus
ttail pipe (cleaning instruc-
tions) .................................................. 317
Exterior lighting Settings options ............................ .122
see Lights
Exterior mirrors
Adjusting ....................................... 117
Anti-dazzle mode (automatic) ........119
Folding in/ou t(automatically) .......118
Folding in/ou t(electrically) ...........118
Folding in whe nlocking (on-board
computer) ...................................... 247
Out of position (troubleshooting) ...118
Parking position ............................. 119
Resetting ....................................... 118
Storing settings (memory func-
tion) ............................................... 120 F
Faul tmessage
see Display messages
Filler cap
see Fuel filler flap
Fire extinguisher ............................... 323
First-aid kit ......................................... 322
Fitting awheel
Removing awheel .......................... 349
Fitting wheels
Fitting awheel ............................... 349
Lowering the vehicle ......................350
Raising the vehicle .........................348
Securing the vehicle against roll-
ing away ........................................ 347
Flat tyre
MOExtended tyres .........................324
Preparing the vehicle .....................324
TIREFIT kit ...................................... 325
Floormat ............................................ .303
Foglamps Extended range .............................. 129
Switching on/off ........................... 124
Frequencies
Garage door opene r....................... 299
Mobile phone ................................. 369
Two-way radio ................................ 369
Front foglamps
Display message ............................ 25710
Index

Instrumen
tcluster
Overview .................................. 30, 229
Settings ......................................... 242
Warning and indicator
lamps ...................................... .32, 275
Instrument cluster lighting ..............230
Intelligen tLight System
Activating/deactivatin g................. 243
Display message ............................ 258
Overview ........................................ 128
Setting the dipped-bea mhead-
lamps for driving on the right/left .243
Interior lighting ................................. 131
Automatic control system ..............131
Delayed switch-off (on-board
computer) ...................................... 245
Emergency lighting ........................132
Manual control ............................... 132
Overview ........................................ 131
Reading lamp ................................. 131
Interior motion sensor ........................72
ISOFIX child seat securing system ....57 J
Jack Storage location ............................ 323
Using ............................................. 348
Jump start (engine)
see Jump starting (engine)
Jump starting (engine) ......................331 K
Key Changing the battery .......................79
Checking the battery .......................79
Convenience closing feature ............90
Convenience opening feature ..........90
Display message ............................ 274
Door central locking/unlocking .......77
Emergency key element ................... 78
Important safety notes ....................76
Loss ................................................. 81
Modifying the programming .............78
Opening/closing soft top .................94
Positions (ignition lock) .................159Problem (malfunction)
.....................81
Starting the engine ........................160
KEYLESS-GO
Convenience closing ........................90
Display message ............................ 274
Locking ............................................ 77
Start/Stop button .......................... 159
Starting the engine ........................161
Unlocking ......................................... 77
Keyp ositions
Key ................................................ 159
KEYLESS GO .................................. 159
Kickdown
Driving tips .................................... 169
Manual drive program ....................172
Kneebag ............................................... 45 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating .................241
Display message ............................ 264
Function/informatio n.................... 212
Lane package ..................................... 210
Lashing eyelets ................................. 289
Licence plate lamp (display mes-
sage) ................................................... 257
Lighting see Lights
Lights
Activating/deactivating the Intel-
ligent Ligh tSystem ........................ 243
Activating/deactivating the inte-
rior lighting delayed switch-off .......245
Active light function .......................128
Automatic headlamp mode ............123
Cornering light function .................128
Dipped-bea mheadlamps ............... 124
Driving abroad ............................... 122
Foglamps ....................................... 124
Foglamps (extended range) ...........129
Hazard warning lamps ...................127
Headlamp flasher ........................... 127
Headlamp range ............................ 126
Ligh tswitc h................................... 123
Main-beam headlamps ................... 127 12
Index

fore be carried out at
aqualified specialist
workshop. G
WARNING
If work on electronic equipment and its soft-
ware is carried out incorrectly, this equipment
could stop working .The electronic systems
are networked via interfaces. Tampering with
these electronic systems could cause mal-
functions in systems which have not been
modified. Malfunctions such as these can
seriously jeopardise the vehicle's operating
safety and therefore your own safety.
You should therefore have all work and mod-
ifications to electronic components carried
out at a qualified specialist workshop. Declarations of conformity
Wireless vehicle components The following information applies to all com-
ponents of the vehicle and the COMAND sys-
tem which receive and/or transmit radio
waves:
The components of this vehicle which receive
and/or transmit radio waves are compliant
with the basic requirements and other rele-
vant provisions of Directive 1999/5/EC. You
can obtain further information from any
Mercedes-Benz Service Centre.
Electromagnetic compatibility The electromagnetic compatibility of the vehi-
cle components has been checked and certi-
fied according to the currently valid version
of Directive 72/245/EEC or the equivalent
ECE Regulation ECE-R 10. Diagnostics connection
G
WARNING
If you connect equipment to a diagnostics
connection, it can affect the operation of the
vehicle systems. This could compromise the operating safety of your vehicle while driving.
There is a risk of an accident.
Do not connect any equipment to a diagnos-
tics connection.
G
WARNING
Loose equipment or cables hanging from a
device which are connected to a diagnostic
connection could impede pedal clearance.
The equipment or cables could get caught
between the pedals when driving and braking
suddenly. This could impair the function of the
pedals. There is a risk of accident.
Do not attach any equipment or cables in the
driver's footwell.
! If the engine is switched off and equip-
ment on the diagnostics connection is
used, the starter battery may discharge.
The diagnostics connection is only intended
for the connection of diagnostic equipment at
a qualified specialist workshop.
Connecting equipment to the diagnostics
connection can lead to emissions monitoring
information being reset, for example. This
may lead to the vehicle failing to meet the
requirements of the next emissions test dur-
ing the main inspection. Qualified specialist workshop
Aq ualified specialist workshop has the nec-
essary special skills, tools and qualifications
to correctly carry out any necessary work on
your vehicle. This particularly applies to work
relevan tto safety.
Observe the notes in the Service Booklet.
Always have the following work carried out at
a qualified specialist workshop:
R work relevant to safety
R service and maintenance work
R repair work
R modifications, installations and conver-
sions
R work on electronic components Introduction
23 Z

To ensure that the restraint systems can
deliver their full potential protection, make
sure that:
R the seat and head restraint are adjusted
properly (Y page 108).
R the seat belt has been fastened properly
(Y page 49).
R the airbags can inflate unrestricted if
deployed (Y page 42).
R the steering wheel is adjusted properly
(Y page 115).
R the restraint systems have not been modi-
fied.
An airbag increases the protection of vehicle
occupants wearing a seat belt. However, air-
bags are only an additional restraint system
which complements, but does not replace,
the seat belt. All vehicle occupants must wear
their seat belt correctly at all times, even if
the vehicle is equipped with airbags. The air-
bags are not deployed in all types of acci-
dents .For example, if the protective capacity
of correctly fastened seat belts is not
increased by deploying the airbags, the air-
bags will not deploy.
Airbag deployment only provides increased
protection if the seat belt is worn correctly.
First, the seat belt helps to keep the vehicle
occupant in the best position in relation to the
airbag. Second, in a head-on collision, for
example, the seat belt prevents the vehicle
occupant from being propelled towards the
point of impact. SRS (Supplemental Restraint System)
Introduction SRS consists of:
R
the 6 SRS warning lamp
R airbags
R the airbag control unit with crash sensors
R belt tensioners
R belt force limiters SRS reduces the risk of occupants coming
into contact with the vehicle's interior in the
event of an accident. It can also reduce the
forces to which occupant
sare subjected dur-
ing an accident.
SRS warning lamp G
WARNING
If SRS is malfunctioning, individual systems
may be triggered unintentionally or might not
be triggered in the event of an accident with
a high rate of vehicle deceleration.
A malfunction has occurred if:
R the 6 SRS warning lamp does not light
up when the ignitio nis switched on.
R the engine is running and the 6SRS
warning lamp does not go out after a few
seconds.
R the engine is running and the 6SRS
warning lamp lights up again.
In this case, have SRS checked immediately
at a qualified specialist workshop.
SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started.
Triggering of belt tensioners, belt force
limiters and airbags During the first stage of a collision, the airbag
control unit evaluates important physical
data relating to vehicle deceleration or accel-
eration, such as:
R
duration
R direction
R magnitude
Based on the evaluation of this data, the air-
bag control unit pre-emptively triggers the
belt tensioners in the first stage. Occupant safety
41Safety Z

ABS (Anti-lock Braking System)
Important safety notes i
Observe the "Importan tsafety notes" sec-
tion (Y page 64). G
WARNING
If AB Sis faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired.A ddition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABSi s malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp (Y page 277) and
display messages which may be shown in the
instrument cluster (Y page 250).
ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi-
cle when braking.
ABS works from a speed of about 8 km/h
upwards, regardless of road-surface condi-
tions. ABS works on slippery surfaces, even
when you only brake gently.
The yellow !ABS warning lamp in the
instrument cluster lights up when the ignition
is switched on. It goes out when the engine is
running.
Brakes X
If ABS intervenes: continue to depress the
brake pedal with force until the braking sit-
uation is over.
X To make a full brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel
a pulsing in the brake pedal.
The pulsating brake pedal can be an indica-
tion of hazardous road conditions and func- tions as a reminder to take extra care while
driving. BAS (Brake AssistS
ystem)
i Observe the "Important safety notes" sec-
tion (Y page 64). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
BAS operates in emergency braking situa-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the braking force,
thus shortening the stopping distance.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. BAS PLUS (Brake Assist System Plus)
i Observe the "Important safety notes" sec-
tion (Y page 64).
BAS PLUS is only available on vehicles with
DISTRONIC PLUS.
BAS PLUS provides braking assistance in haz-
ardous situations at speeds greater than
7k m/h and uses rada rsensor technology to
assess the traffic situation.
With the help of the radar sensor system, BAS
PLUS can detect obstacles that are in the
path of your vehicle for an extended period of
time.
At speeds up to approximately 70 km/h, BAS
PLUS may also detect stationary obstacles,
for example, stopped or parked vehicles.
To prevent a front-end collision, BAS PLUS
calculates the brake force necessary if:
R you approach an obstacle, and
R BAS PLUS has detected arisk of collision Driving safety systems
65Safety Z

cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle. Adaptive brake lamps
If you brake sharply from a speed of more
than 50 km/h or if braking is assisted by BAS
or BAS PLUS, the brake lamps flash rapidly.
In this way, traffic travelling behind you is
warned in an even more noticeable manner.
If you brake sharply from a speed of more
than 70 km/h to a standstill, the hazard warn-
ing lamps are activated automatically. If the
brakes are applied again, the brake lamps
light up continuously .The hazard warning
lamps switch off automatically if you travel
faster than 10 km/h .You can also switch off
the hazard warning lamps using the hazard
warning button (Y page 127). ESP
®
(Electronic Stability Program)
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 64). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilise the vehicle. In addition, other driving
safety systems are switched off. This increa-
ses the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
Vehicles without 4MATIC: observe the notes
on ESP ®
if the vehicle is being towed with the
rear axle raised (Y page 334).
ESP ®
is deactivated if the åwarning lamp
in the instrument cluster lights up continu-
ously when the engine is running.
If the ÷ warning lamp and the åwarn-
ing lamp are lit continuously, ESP ®
is not
available due to a malfunction. Observe the information on warning lamps
(Y
page 278) and display messages which
may be shown in the instrument cluster
(Y page 250).
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilise the
vehicle. The engine output is also modified to
keep the vehicle on the desired course within
physical limits. ESP ®
assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilise the vehicle during braking.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster.
If ESP ®
intervenes:
X Do not deactivate ESP ®
under any circum-
stances.
X When pulling away, only depress the accel-
erator pedal as far as is necessary.
X Adapt your driving style to suit the prevail-
ing road and weather conditions.
i Only use wheels with the recommended
tyre sizes. Only then will ESP ®
function
properly.
4ETS (Electronic Traction System) Traction control is part of ESP
®
.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active if you deacti-
vate ESP ®
.
Deactivating/activating ESP ® G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilises the vehicle. There is an increased risk
of skidding and an accident. Driving safety systems
67Safety
Z