fuel consumption MERCEDES-BENZ C-CLASS SALOON 2014 Owners Manual

Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency
Automatic measures after an acci-
dent ................................................ .63
Emergency key
Unlocking the driver's door .............. 98
Emergency key element
Function/notes ................................ 93
Inserting .......................................... 93
Locking vehicle .............................. 100
Removing ........................................ .93
Emergency release
Driver's door .................................... 98
Emergency spare wheel
General notes ................................ 461
Important safety notes .................. 461
Inflating the collapsible spare
wheel ............................................ .462
Technical data ............................... 464
Emergency unlocking
Vehicle ............................................. 98
Energy flow display ........................... 273
Engine
Display message ............................ 333
ECO start/stop function ................ 186
Engine number ............................... 468
Jump-starting ................................. 418
Running irregularl y......................... 189
Starting problems .......................... 189
Starting the engine with the key .... 183
Starting with the Start/Stop but-
ton ................................................. 184
Stopping ........................................ 208
Tow-starting (vehicle) ..................... 424
Warning lamp (engine diagnos-
tics) ............................................... 360
Engine electronics
Notes ............................................. 466
Problem (fault) ............................... 189
Engine oil
Additives ........................................ 474
Checking the oil level ..................... 392
Checking the oil level using the
dipstick .......................................... 392
Display message ............................ 335
Filling capacity ............................... 474
Notes about oil grade s................... 473 Notes on oil level/consumption .... 392
Topping up ..................................... 392
Viscosity ........................................ 474
Environmental protection
Returning an end-of-life vehicle ....... 24
ESP ®
(Electronic Stability Pro-
gram)
Activating/deactivating ................... 81
Characteristics ................................. 81
Deactivating/activating ................. 307
Display message ............................ 315
ETS/4ETS ........................................ 80
Function/note s................................ 80
General notes .................................. 80
Important safety guidelines ............. 80
Trailer stabilisation .......................... 82
Warning lamp ................................. 357
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 80
Exhaust
see Exhaust pipe
Exhaust pipe
Cleaning ......................................... 402
Exhaustive discharging (high-volt-
age battery) ....................................... 415
Extended overrun mode ................... 280
Exterior lighting
Cleaning ......................................... 400
see Lights
Exterior mirrors
Adjusting ....................................... 128
Anti-dazzle mode (automatic) ........ 129
Folding in/out (automatically )....... 128
Folding in/out (electrically) ........... 128
Out of position (troubleshooting) ... 129
Parking position ............................. 129
Resetting ....................................... 128
Storing settings (memory func-
tion) ............................................... 131 F
Fault message see Display messages
Features ............................................. 376
Filler cap
see Fuel filler flap
Fire extinguisher ............................... 407 Index
11

First-aid kit
........................................ .406
Fitting a wheel
Fitting a wheel ............................... 442
Lowering the vehicle ..................... .443
Preparing the vehicle ..................... 438
Raising the vehicle ......................... 439
Removing a wheel .......................... 442
Securing the vehicle against roll-
ing away ........................................ 439
Flat tyre
Changing a wheel/fitting the
spare wheel ................................... 437
MOExtended tyres ......................... 408
Preparing the vehicle ..................... 408
TIREFIT kit ...................................... 409
see Emergency spare wheel
Floormat ............................................. 387
Foglamps (extended range) .............. 139
Fording
On flooded roads ........................... 215
Frequencies
Mobile phone ................................. 466
Two-way radio ................................ 466
Front-passenger front airbag deac-
tivation
Display message ............................ 328
Front-passenger front airbag deac-
tivation system
Operation ......................................... 54
Problems ......................................... 59
System self-test ............................... 57
Fuel
Additives ........................................ 471
Consumption information .............. 472
Consumption statistics .................. 299
Displaying the current consump-
tion ................................................ 298
Displaying the range ..................... .298
Driving tips ................................... .211
E10 ................................................ 470
Fuel gauge ....................................... 34
Grade (petrol) ................................ 470
Important safety notes .................. 469
Low outside temperatures ............. 472
Problem (malfunction) ................... 203
Quality (diesel )............................... 471
Refuelling ....................................... 200
Tank content/reserve fue l............. 470 Fuel consumption (Audio 20)
........... 276
Fuel consumption (COMAND
Online) ................................................ 276
Fuel filler flap
Opening ......................................... 202
Fuel filter (white display message) .. 336
Fuel level
Calling up the range (on-board
computer) ...................................... 298
Gaug e.............................................. 34
Fuel tank
Capacity ........................................ 470
Problem (malfunction) ................... 203
Fuses
Allocation chart ............................. 426
Before changing ............................. 425
Dashboard fuse box ....................... 425
Fuse box in the boot ...................... 426
Fuse box in the engine compart-
ment .............................................. 426
Fuse box in the front-passenger
footwell .......................................... 425
Important safety notes .................. 424 G
Generated electrical energy (Audio 20) ...................................................... 276
Generated electrical energy
(COMAND Online) .............................. 276
Genuine Mercedes-Benz parts ........... 24
Glove compartment .......................... 369 H
Handbrake see Parking brake
HANDS-FREE ACCESS ....................... 103
Hazard warning lamps ...................... 137
Head restraints
Adjusting ....................................... 121
Adjusting (electrically) ................... 122
Adjusting (manually) ...................... 122
Adjusting (rear) .............................. 122
Fitting/removing (rear) .................. 122
Head-up display
Adjusting the brightness ................ 310
Function/note s............................. 295 12
Index

Important safety notes .................. 295
Setting the position ....................... 310
Storing settings (memory func-
tion) ............................................... 131
Switching on or off .........................2 96
Switching the display on/off ......... 310
Headlamp
Cleaning system (notes) ................ 476
Headlamp flasher .............................. 137
Headlamps
Misting up ...................................... 140
see Automatic headlamp mode
Heating
see Climate control
High-pressure cleaners .................... 398
High-voltage battery
Charge leve l................................... 273
Charging ........................................ 416
Charging (on-board computer) ....... 274
General notes .................................. 43
Vehicle fire ....................................... 43
Hill start assist .................................. 185
HOLD function
Activating ....................................... 233
Deactivating ................................... 233
Display message ............................ 340
Function/note s............................. 232
Horn ...................................................... 32
Hybrid drive
Displaying the total range .............. 276
Generated electrical energy ........... 276
Hybrid operation
AGILITY SELECT switch .................. 277
Automatic engine start (ECO
Start/Stop function) ...................... 280
Automatic engine switch-off (ECO
start/stop function) ....................... 280
Driving tips .................................... 278
ECO start/stop function ................ 279
Energy flow display ........................ 273
Extended overrun mod e................. 280
Fuel consumption .......................... 276
General notes ................................ 269
Important safety notes .................. 269
Manual gearshifting ....................... 278
Noiseless start ............................... 277
Operating (on-board computer) ..... 273
Overrun mode ................................ 280 Overview (instrument cluster) ........ 272
Power display (electric motor) ....... 272
Problems ....................................... 282
Pulling away ................................... 277
RBS (Recuperative Brake Sys-
tem) ............................................... 269
Resetting values (Audio 20) ........... 276
Resetting values (COMAND
Online) ........................................... 276
Starting the engine ........................ 276
Hybrid system
Automatic deactivation .................... 42
Danger of electric shock .................. 42
Display message ............................ 337
High-voltage battery ........................ 43
Important safety notes .................... 42
Manual deactivation ......................... 43
Opening the bonnet ......................... 44
Overview ........................................ 271
Problems (malfunctions) ................ 282
READY indicator ............................. 276
Warning lamp ................................. 362
Hybrid vehicle
Climate control (THERMATIC) ........ 153
Climate control
(THERMOTRONIC) .......................... 156
Hybrid vehicles
Important safety notes .................... 42 I
Ignition lock see Key positions
Immobiliser .......................................... 85
Indicator and warning lamp
Restraint system ............................ 359
Indicator and warning lamps
COLLISION PREVENTION ASSIST
PLUS .............................................. 363
Coolant .......................................... 360
Engine diagnostics ......................... 360
Indicator lamps
Display message ............................ 330
see Warning and indicator lamps
Indicators
see Turn signals
Insect protection on the radiator .... 392 Index
13

Protection of the environment
General notes
H
Environmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
Our objectives are to use the natural resour-
ces which form the basis of our existence on
this planet sparingly and in a manner which
takes the requirements of both nature and
humanity into consideration.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally-responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tyre wear depend on
the following factors:
R operating conditions of your vehicle
R your personal driving style
You can influence both factors. Therefore,
please bear the following in mind:
Operating conditions:
R avoid short trips, as these increase fuel
consumption.
R observe the correct tyre pressure.
R do not carry any unnecessary weight in the
vehicle.
R remove the roof rack once you no longer
need it.
R a regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
R all maintenance work should be carried out
at a qualified specialist workshop.
Personal driving style:
R do not depress the accelerator pedal when
starting the engine.
R do not warm up the engine when the vehicle
is stationary.
R drive carefully and maintain a safe distance
from the vehicle in front.
R avoid frequent, sudden acceleration and
braking. R
change gear in good time and use each gear
only up to Ôof its maximum engine speed.
R switch off the engine in stationary traffic.
R monitor the vehicle's fuel consumption. H
Environmental note
Have defective high-voltage batteries dis-
posed of in an environmentally responsible
manner. Consult a qualified specialist work-
shop which has the necessary specialist
knowledge and tools to carry out the work
required. Mercedes-Benz recommends that
you use a Mercedes-Benz Service Centre for
this purpose. Returning an end-of-life vehicle
EU countries only:
Mercedes-Benz will take back your old vehicle to dispose of it in an environmentally-respon-sible manner in accordance with the Euro-
pean Union (EU) End of Life Vehicles Direc-
tive.
There is a network of return points and dis-
assembly plants available. You can return
your vehicle to these plants free of charge.
This makes a valuable contribution to the
recycling process and the conservation of
resources.
For further information on recycling old vehi- cles, recovery and the terms of the policy,
visit the Mercedes-Benz homepage. Genuine Mercedes-Benz parts
H
Environmental note
Daimler AG also supplies reconditioned
assemblies and parts which are of the same
quality as new parts. For these, the same war-
ranty applies as for new parts. 24
Introduction

Drive program S+ (Sport Plus)
Drive program
S+is characterised by the fol-
lowing:
R the vehicle exhibits extremely sporty driv-
ing characteristics
R the vehicle pulls away in first gear
R the automatic transmission shifting up
later
R as a result of the later automatic transmis-
sion shift points, the fuel consumption pos-sibly being higher
R the suspension exhibits particularly stiff
springing and damping settings (vehicles
with AIRMATIC)
R the ECO start/stop function is not available
Drive program S (Sport) Drive program
Sis characterised by the fol-
lowing:
R the vehicle exhibits sporty driving charac-
teristics
R the vehicle pulls away in first gear
R the automatic transmission shifting up
later
R as a result of the later automatic transmis-
sion shift points, the fuel consumption pos-sibly being higher
R the suspension exhibits stiff springing and
damping settings (vehicles with AIRMATIC)
Drive program C (Comfort) Drive program
Cis characterised by the fol-
lowing:
R the vehicle delivers comfortable, economi-
cal driving characteristics.
R the vehicle pulling away more gently in
forward and reverse gears unless the accel- erator pedal is depressed fully.
R increased sensitivity. This improves driving
stability on slippery road surfaces, for
example.
R optimal fuel consumption resulting from
the automatic transmission shifting up sooner. The vehicle is driven in the low
engine speed range and the wheels are less
likely to spin.
Drive program E (Eco) Drive program
Eis characterised by the fol-
lowing:
R the vehicle exhibits comfortable, economi-
cal driving characteristics.
R the vehicle pulling away more gently in
forward and reverse gears unless the accel-
erator pedal is depressed fully.
R increased sensitivity. This improves driving
stability on slippery road surfaces, for
example.
R optimal fuel consumption resulting from
the automatic transmission shifting up
sooner. The vehicle is driven in the low
engine speed range and the wheels are less likely to spin.
R during deceleration, the engine is discon-
nected from the drive train. The vehicle
uses kinetic energy and consumes less fuel
(overrun mode).
R the performance of the air-conditioning and
heating systems are reduced. Manual gearshifting
General notes :
Left steering wheel gearshift paddle:
shifts down
; Right steering wheel gearshift paddle:
shifts up 198
Automatic transmissionDriving and pa
rking

Emergency braking
The vehicle can also be braked during an
emergency by using the electric parking
brake.
X While driving, push handle :of the elec-
trical parking brake (Y page 209).
The vehicle is braked as long as you keep
handle :of the electric parking brake
depressed. The longer the electric parking
brake handle :is depressed, the greater the
braking force.
During braking:
R a warning tone sounds
R the Release park. brake
Release park. brake message
appears
R the red !indicator lamp in the instru-
ment cluster flashes
When the vehicle has been braked to a stand- still, the electric parking brake is applied. Parking up the vehicle
If you leave the vehicle parked up for longer
than four weeks, the battery may be damaged by exhaustive discharging and further dam-
aged in the event of this occurring again.
X Disconnect the battery or connect it to a
trickle charger.
i You can obtain information about trickle
chargers from a qualified specialist work-
shop.
If you leave the vehicle parked up for longer
than six weeks, it may suffer from lack of use.
X Visit a qualified specialist workshop and
seek advice.
Hybrid vehicles: observe the safety notes
for the high-voltage battery (Y page 269). Driving tips
General driving tips
Important safety notes G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving.
Drive sensibly – save fuel Observe the following tips to save fuel:
X The tyres should always be inflated to the
recommended tyre pressure.
X Remove unnecessary loads.
X Remove roof racks when they are not nee-
ded.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all maintenance work carried out as
indicated by the service intervals in the
Service Booklet or by the service interval
display.
Fuel consumption also increases when driv-
ing in cold weather, in stop-start traffic, on
short journeys and in hilly terrain. ECO display
The ECO display shows you how economical
your driving style is. The ECO display assists
you in achieving the most economical driving
style for the selected settings and prevailing
conditions. Consumption can be significantly influenced by your driving style. Driving tips
211Driving and parking Z

time, the driver has adopted the most eco-
nomical driving style for the selected settings
and prevailing conditions. The ECO display
border lights up.
The ECO display does not indicate the actual fuel consumption. The additionally achieved
range displayed under Bonus fr. start Bonus fr. start
does not indicate a fixed consumption reduc-
tion.
In addition to driving style, the actual con-
sumption is affected by other factors, such
as:
R load
R tyre pressure
R cold start
R choice of route
R the use of electrical consumers
These factors are not included in the ECO dis-
play.
An economical driving style involves driving at a moderate engine speed.
To achieve a higher value in the categories
"acceleration" and "smooth driving":
R observe the gearshift recommendation
R drive the vehicle in drive program E(vehi-
cles with the AGILITY SELECT switch)
On long journeys at a constant speed, e.g. on the motorway, only the outer area for "con-
stant" will change.
The ECO display summarises the driving style
from the start of the journey to its completion. Therefore, there are more marked changes in
the outer areas at the start of a journey. Dur- ing a prolonged driving time, these changes
are smaller. For more marked changes, per-
form a manual rest (Y page 299).
Further information on the ECO display
(Y page 298). Brakes
Important safety notes G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on a slippery road surface.
Downhill gradients Change into a lower gear in good time on long
and steep downhill gradients. Take particular note of this when driving a laden vehicle and
when towing a trailer.
This also applies if cruise control, DISTRONIC
PLUS or SPEEDTRONIC are activated.
This will use the braking effect of the engine,
so less braking will be required to maintain
vehicle speed. This relieves the load on the
brake system and prevents the brakes from
overheating and wearing too quickly.
Heavy and light loads G
WARNING
The braking system can overheat if you leave your foot on the brake pedal while driving.
This increases the braking distance and could
even cause the braking system to fail. There is
a risk of an accident.
Never use the brake pedal as a footrest. Do
not simultaneously depress both the brake
pedal and the accelerator pedal while driving.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If heavy demands are made on the brakes, do not park the vehicle immediately. Drive on for
a short while. This allows the airflow to cool
the brakes more quickly. Driving
tips
213Driving an d parking Z

The electric parking brake secures the vehicle
automatically if the HOLD function is activa-
ted and:
R the driver's door is open and the driver's
seat belt is unfastened
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function
R a system fault occurs
R the power supply is insufficient
Vehicles with automatic transmission : if a
fault occurs, then the transmission may also
be shifted into position Pautomatically.
Vehicles with manual transmission:
The Brake immediately
Brake immediately message can also
appear in the multifunction display.
X Immediately depress the brake pedal firmly
until the warning message in the multifunc- tion display goes out.
The HOLD function is deactivated.
A horn will sound at regular intervals if you
turn off the engine, take off your seat belt or
open the driver's door when the HOLD func-
tion is activated. The horn alerts you to the
fact that the HOLD function is still activated.
If you attempt to lock the vehicle, the tone
becomes louder. The vehicle cannot be
locked until you have deactivated the HOLD
function.
i Once you have switched off the engine,
you cannot restart it until you have deacti-
vated the HOLD function. AIRMATIC
General notes AIRMATIC is an air suspension system with
variable damping for improved driving com-
fort. All-round level control ensures the best
possible suspension and constant ground
clearance, even with a laden vehicle. When
you drive fast, the vehicle is lowered auto-
matically to improve driving safety and to
reduce fuel consumption. There is also the option to manually adjust the vehicle level.
AIRMATIC consists of level setting, level con-
trol and the Adaptive Damping System ADS.
Vehicles with automatic transmission: the
vehicle level can be set using the AGILITY
SELECT switch (Y page 197) or the level but-
ton (Y page 234). The setting always corre-
sponds to the last selected function.
Vehicles with manual transmission: the
vehicle level can be set using the AGILITY
SELECT switch (Y page 191) or the level but-
ton (Y page 234). The setting always corre-
sponds to the last selected function.
Important safety notes G
WARNING
People's limbs may become trapped if they
are located underneath the vehicle or
between the vehicle body and the tyres when the vehicle is lowering. There is a danger of
injury.
When lowering the vehicle, make sure no one
is underneath the vehicle or in the immediate vicinity of the wheel arches.
i If one of the doors is open, the vehicle is
not lowered.
Vehicle level Setting the raised vehicle level
It is possible to choose between the "Normal"
and "Raised" vehicle levels below a speed of
80 km/h. Select the "Normal" setting for nor-
mal road surfaces and "Raised" for driving 234
Driving systemsDriving and parking

R
you have switched on the turn signals. In
this event, the warnings are suppressed
for a certain period of time.
R a driving safety system intervenes, such
as ABS, BAS or ESP ®
.
R you accelerate hard, e.g. kickdown.
R you brake hard.
R you steer actively, e.g. swerve to avoid an
obstacle or change lane quickly.
R you cut the corner on a sharp bend.
In order that you are warned only when nec-
essary and in good time if you cross the lane marking, the system recognises certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend.
R the road has very wide lanes, e.g. a motor-
way.
R the system recognises solid lane markings.
The warning vibration occurs later if:
R the road has narrow lanes.
R you cut the corner on a bend.
Towing a trailer
If you couple up a trailer, make sure that you have correctly established the electrical con-
nection. This can be accomplished by check- ing the trailer lighting. Hybrid operation
Points to remember
General notes Hybrid technology combines a fuel efficient
internal combustion engine with a powerful
electric motor. The hybrid system automati-
cally selects the most efficient operating
mode for every driving situation. Drive the
vehicle in the usual manner.
To save fuel, the hybrid system switches off
the combustion engine as often as possible
during the journey when power output requirements are low. When power output
requirements are low, the electric motor pow-
ers the vehicle. When power output require-
ments are high, the combustion engine is
switched on, even during a journey. When the vehicle is stationary, the combustion engine
is usually switched off. Consequently, there is
usually no engine idling as with combustion
engine vehicles.
For pulling away and accelerating, the electric motor supports the internal combustion
engine using the power stored in the high-
voltage battery. In addition, the power is used
for partially electric driving, operation of the
electric coolant compressor and to support
the 12 V on-board electrical system. In this
way the hybrid drive helps to reduce your
vehicle's fuel consumption.
Observe the driving tips on hybrid operation
(Y page 278).
RBS (Recuperative Brake System) If you release the accelerator pedal when the
vehicle is in motion, overrun recuperation is
initiated. The electric motor is operated as a
generator when in overrun mode and when
you brake. Hybrid technology converts the
kinetic energy of the vehicle into electricity
and stores it in the high-voltage battery. Important safety notes
All of the vehicle's systems remain active, if: R the vehicle is stationary,
R the combustion engine is switched off and
R the READY-indicator in the instrument clus-
ter is lit.
If you remove your foot from the brake pedal
while in transmission position D or R, the
vehicle could pull away automatically.
Observe the notes on the READY display of
the ECO start/stop function (Y page 279).
Vehicles with an electric motor generate sig-
nificantly less noise than vehicles with inter-
nal combustion engines. As a result, in certain Hybrid operation
269Driving and parking Z

This shows the electric output from the
electric motor, e.g. when driving using the
electric motor or in boost mode.
When the motor is switched on, the display is at :. When driving solely on electricity,
the display fills up from :to; depending
on the power output demanded as a result
of pressing the accelerator pedal.
If the display has reached limit ;, addi-
tional power output can only be provided by
the combustion engine. The combustion
engine starts. If the display is approaching
limit ;and you remove your foot from the
accelerator pedal, the display empties
again. The combustion engine is not
switched on. At low speeds, you can
thereby control the electric drive usage so
that you only drive in electric mode.
R Area =to? (CHARGE):
This shows the recuperated energy which is
stored in the high-voltage battery as elec-
trical energy.
When the display reaches limit ?, the max-
imum recuperative braking power has been exhausted. The conventional brakes are
activated.
Operating the on-board computer You can display the current operating condi-
tion of the hybrid system in the multifunction
display and the COMAND display
(Y page 273).
You can display the current operating condi-
tion of the hybrid system in the multifunction display and the Audio 20/COMAND Online
display (Y page 273).
In the Audio 20/COMAND Online display, you
can also call up a graphic display of the fuel
consumption and generated electricity
(Y page 276). Menus and submenus
Selecting messages in the Audio 20/
COMAND Online display X
Press the Øbutton on the controller.
The vehicle menu appears.
X To select Energy Energyflow
flow: turn and press the
controller.
The energy flow is displayed.
X To select Consumption Consumption: turn and press the
controller.
Fuel consumption and the electric energy
generated are displayed.
X To exit the display: press the %button
on the controller.
Selecting the energy flow display in the multifunction display X
Use Ñ on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Trip Tripmenu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select Energy flow
Energy flow .
The energy flow is displayed.
Energy flow display Overview
:
Internal combustion engine
; Electric motor
= Charge status of the high-voltage battery Hybrid operation
273Driving and parking Z