2014 MERCEDES-BENZ C-CLASS SALOON charging

Automatic transmission emer-
gency running mode
.........................200
Auxiliary heating/ventilation
Important safety notes .................. 172
Problem (display message) ............ 177
Remote control .............................. 173
Setting the departure time ............. 175
Switching on/off (on the centre
console) ......................................... 173
Axle load, permissible (trailer tow-
ing) ...................................................... 480 B
Bag hook ............................................ 374
Ball coupling
Folding in ....................................... 286
Folding out ..................................... 285
BAS (Brake Assist System) ................. 75
BAS PLUS with Cross-Traffic Assist (Brake Assist PLUS with Cross-
Traffic Assist)
Function/notes ................................ 75
Important safety notes .................... 76
Battery (high-voltage)
see High-voltage battery
Battery (key)
Checking .......................................... 94
Important safety notes .................... 93
Replacing ......................................... 94
Battery (vehicle)
Charging ........................................ 416
Display message ............................ 334
Important safety notes .................. 412
Jump starting ................................. 418
Belt
see Seat belts
Belt tensioner
Activation ......................................... 60
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 309
Display message ............................ 339
Notes/function .............................. 259
Trailer towing ................................. 261
see Active Blind Spot Assist
BlueTEC (AdBlue ®
) ............................ .472 BlueTEC
®
Topping up AdBlue ®
....................... 204
Bonnet
Active bonnet (pedestrian protec-tion) ............................................... 390
Closing .......................................... .392
Display message ............................ 347
Important safety notes .................. 390
Opening ......................................... 391
Boot
Emergency release ........................ 105
Important safety notes .................. 101
Locking separately ......................... 105
Opening/closing (automatically
from inside) ................................... 104
Opening/closing (automatically
from outside) ................................. 102
Opening/closing (from the out-
side, HANDS-FREE ACCESS) .......... 103
Opening/closing (manually from
outside) ......................................... 102
Boot lid
Display message ............................ 347
Obstacle recognition ..................... .101
Opening dimensions ..................... .476
Opening/closing ............................ 101
Boot load (maximum) ........................ 476
Box (boot) .......................................... .374
Brake
EBD ................................................. .82
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 322
Notes ............................................. 475
Brake force distribution, elec-
tronic
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive ........................................... 80
Display message ............................ 330
Brake pedal
Pedal resistance/pedal travel .......... 44
Brakes
ABS .................................................. 74
Adaptive Brake Assist ...................... 79 6
Index

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

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

G
WARNING
If the housing of the high-voltage battery has
been damaged, electrolyte and gases may
leak out. These are poisonous and caustic.
There is a risk of injury.
Avoid contact with the skin, eyes or clothing. Immediately rinse electrolyte splashes off
with water and seek medical attention
straight away.
! Exhaustive discharge caused by the vehi-
cle standing idle for lengthy periods can
damage the high-voltage battery.
If the vehicle is idle for lengthy periods, run
it for a few minutes once every six weeks to
charge up the high-voltage battery.
During the charging process, switch off all
electrical consumers, e.g. the automatic
climate control or the seat heating.
Information on charging the high-voltage bat-
tery (Y page 416).
Engine compartment Before opening the bonnet:
X Apply the electric parking brake.
X Shift the automatic transmission to park
position P.
X Switch the ignition off.
X Remove the key from the ignition lock.
or, in vehicles with KEYLESS-GO start-func-
tion or KEYLESS ‑GO
X Remove the Start/Stop button from the
ignition lock.
X Observe the warning notes on the risk of
electric shock (Y page 42).
X Observe the warning notes about the bon-
net (Y page 391). RBS driving safety system (Recupera-
tive Brake System)
RBS supports you when braking with an elec-
tronically-controlled brake boost mode and enables the recovery of kinetic energy (recu-
peration).
For further information on the RBS system
(Y page 269). Panic alarm
X
To activate: press!button :for
approximately one second.
An alarm sounds and the exterior lighting
flashes.
X To deactivate: press!button :
again.
or
X Insert the key into the ignition lock.
or, in vehicles with KEYLESS-GO start-func-
tion or KEYLESS ‑GO
X Press the Start/Stop button.
The key must be in the vehicle.
The panic alarm function is only available in
certain countries. Occupant safety
Introduction to the restraint system
The restraint system reduces the risk of vehi- cle occupants coming into contact with parts
of the vehicle's interior in the event of an
accident. The restraint system can also
reduce the forces to which vehicle occupants
are subjected during an accident. 44
Occupant safetySafety

?
u Switches the rear interior lighting
on/off
A p Switches the right-hand front read-
ing lamp on/off
Control panel in the grab handle (rear
compartment) :
Reading lamp
; p Switches the reading lamp on/off Interior lighting control
General notes In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time,
unless the key is in position 2in the ignition
lock.
The colour, brightness and display lamp for
the ambient lighting may be set using
COMAND Online or Audio 20 (see the sepa-
rate operating instructions).
Automatic interior lighting control X
To switch on/off: press the|button.
When the automatic interior lighting con-
trol is activated, the button is flush with the overhead control panel.
The interior lighting automatically switches
on if you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock The interior lighting is activated for a short
time when the key is removed from the igni-
tion lock. This delayed switch-off can be
adjusted using COMAND Online or Audio 20
(see the separate operating instructions).
Manual interior lighting control X
To switch the front interior lighting on/
off: press the cbutton.
X To switch the rear interior lighting on/
off: press the ubutton.
X To switch the reading lamps on/off:
press the pbutton. Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
X To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or X Lock and then unlock the vehicle using the
key. Replacing bulbs (vehicles with LED
headlamps)
The front and rear light clusters of your vehi-
cle are equipped with LED light bulbs. Do not
replace the bulbs yourself. Contact a qualified specialist workshop which has the necessaryspecialist knowledge and tools to carry out
the work required.
Lamps are an important aspect of vehicle
safety. You must therefore make sure that
these function correctly at all times. Have the
headlamp setting checked regularly. Replacing bulbs (vehicles with LED headlamps)
141Lights and windscreen wipers Z

Problems with the pre-entry climate control
Problem
Possible causes/consequences and
M
MSolutions The pre-entry climate
control cannot be
switched on or has
switched itself off. The charge status of the high-voltage battery is under the specified
minimum charge status.
X Start the engine when the vehicle is at a standstill.
The internal combustion engine drives the electric motor. The
electric motor is operating as an alternator. The high-voltage
battery is charging.
Further information on charging the high-voltage battery
(Y page 416). The pre-entry climate control was started more than twice when
the engine was switched off.
X Switch on the engine and let it run for more than ten seconds.
X Try again to switch the pre-entry climate control on. The difference between the interior temperature and the desired
temperature is too small.
X Increase the difference between the interior temperature and
the desired temperature. Remote activation of heating and ven-
tilation system
General notes Remote activation is only available on vehi-
cles with the BlueEFFICIENCY package.
The driver's and front-passenger seat areas
can also be heated or ventilated when the
engine is switched off.
The starter battery must be sufficiently
charged before remote activation can be
switched on.
When the vehicle is heated, the following
functions are activated:
R seat heating
R rear window heating
R exterior mirror heating
When the vehicle is ventilated, the following
functions are activated:
R blower
R seat ventilation If you have activated ionisation using Audio
20/COMAND Online (see separate operating
instructions), it is activated together with the
remote activation function.
Activating/deactivating the remote
activation function X
To switch on remote activation: push the
climate control symbol button on the key.
The air-conditioning functions are switched on, for up to 10 minutes for heating and up
to 120 minutes for ventilation.
Remote activation switches off automatically if:
R the ignition is switched on, or
R the engine is started
Seat heating (heating), seat ventilation (ven-
tilation) and ionisation remain switched on
after starting the engine. Operating the climate control system
171Climate control Z

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

?
High-voltage battery
A Energy flow
The active hybrid components are highligh-
ted.
The energy flow is indicated by arrows. The
arrows have a different colour depending on
the operating state:
R Green: energy recuperation
R White: normal energy consumption
R Red: increased energy consumption, provi-
ded by the vehicle's high-voltage electrical
system
Automatic engine switch-off The internal combustion engine and the elec-
tric motor are switched off.
The arrows for the energy flow are not shown.
The combustion engine is shown in dark grey.
The charge status of the high-voltage battery is shown when the key is in position 2in the
ignition lock.
Engine running while the vehicle is sta-
tionary The combustion engine is running while the
vehicle is stationary. The high-voltage battery
is not being charged.
The arrows for the energy flow are not shown. The combustion engine is highlighted.
Charging while the vehicle is stationary The internal combustion engine drives the
electric motor. The electric motor is operating
as an alternator. The high-voltage battery is
charging.
The arrow representing energy flow is shown in white.
Driving using the internal combustion
engine The internal combustion engine powers the
vehicle.
The arrows for the energy flow are shown in
white.274
Hybrid operationDriving and parking