2014 MERCEDES-BENZ C-Class SEDAN brake

In the event of snowfall or heavy rain, the
recognition can be impaired.
Recognitio nby the rada rsensor system is
also impaired in the event of:
R dirt on the sensors or anything else
covering the sensors
R interference by other radar sources
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle traveling in front, e.g. a
motorbike
R a vehicle traveling in fron tonadifferent line
relative to the center of your vehicle
Following damage to the fron tend of the
vehicle, have the configuratio nand operation
of the rada rsensors checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the fron tofthe vehicle.
Function X
To activate/deactivate: activate or
deactivate PRE-SAFE ®
Brake in the on-
board computer (Y page 214).
If the PRE-SAFE ®
Brake is not activated, the
0001 symbol appears in the multifunction
display.
Starting at a speed of around 4 mph
(7 km/h), this function warns you if you
rapidly approach a vehicle in front.An
intermitten twarning tone will then sound and
the 000A distance warning lamp will light up
in the instrument cluster.
X Brake immediately to defuse the situation.
or
X Take evasive action provide ditis safe to do
so.
PRE-SAFE ®
Brake can also brake the vehicle
automatically under the following conditions:
R the driver and front-passenger have their
seat belts fastened and
R the vehicle speed is between
approximately 4mph (7 km/h) and
124 mph (200 km/h)
At speeds of up to approximately 40 mph
(70 km/ h)PRE-SAFE ®
Brake can also detect
stationary objects. Examples of stationary
objects are stopped or parked vehicles.
i If there is an increased risk of collision,
preventive passenger protection measures
(PRE-SAFE ®
) are activated.
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking,
up to the point of full brake application.
Automatic emergency braking is not
performed until immediately prior to an
imminent accident.
You can prevent the intervention of the PRE-
SAFE ®
Brake at any time by:
R depressing the accelerator pedal further.
R activating kickdown.
R releasing the brake pedal.
The braking action of PRE-SAFE ®
Brake is
ended automatically if:
R you maneuver to avoid the obstacle.
R there is no longer any danger of a rear-end
collision.
R there is no longer an obstacle detected in
front of your vehicle. Theft deterrent locking system
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle. 72
Theft deterrent locking systemSafety

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 25).SmartKey
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. G
WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle. G
WARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be
unintentionally turned in the ignition lock .This
could cause the engine to be switched off.
There is a risk of an accident.
Do not attach any heavy or large objects to
the SmartKey. Remove any bulky key rings
before inserting the SmartKey into the
ignition lock.
! Keep the SmartKey away from strong
magnetic fields. Otherwise, the remote
control function could be affected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations.
R Do not keep the KEYLESS-GO key:
-with electronic devices, e.g. a mobile
phone or another SmartKey
- with metallic objects, e.g. coins or metal
foil
- inside metallic objects e.g. a metal case
This can affect the functionality of the
SmartKey. SmartKey functions
The SmartKey centrally locks/unlocks:
R the doors
R the trunk lid
R the fuel filler flap 76
SmartKeyOpening and closing

Problem Possible causes/consequences and
0001 Solutions
The engine cannot be
started using the
SmartKey. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 302).
or
X Jump-start the vehicle (Y page 306).
or
X Consult a qualified specialist workshop. The engine cannot be
started using the
SmartKey. The steering lock is mechanically blocked.
X
Remove the SmartKey and reinsert it into the ignition lock. While
doing this, turn the steering wheel in both directions. The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. Ad
oor is open. Therefore, the SmartKey cannot be detected as
easily.
X Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock. Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury. When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
G
WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
You should preferably place luggage or loads
in the cargo compartment. Observe the
loading guidelines (Y page 262). Doors
81Opening and closing Z

vehicle. Never leave children unsupervised in
the vehicle. G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. Side window reversing feature
The side windows are equipped with an
automatic reversing feature. If a solid object
blocks or restricts a side window during the
closing process, the side window opens again
automatically.H owever, the automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying
attention when closing a side window. G
WARNING
The reversing feature does not react:
R to soft, light and thin objects, e.g. small
fingers
R over the last 1/6 in(4 mm) of the closing
movement
R during resetting
R when closing the side window again
manually immediately after automatic
reversing This means that the reversing feature cannot
prevent someone being trapped in these
situations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch
to open the side window again.
Opening and closing the side
windows
0002
Front left
0003 Front right
0022 Rear right
0021 Rear left
The switches for all side windows are located
on the driver's door. There is also a switch on
each door for the corresponding side window.
The switches on the driver's door take
precedence.
i The side windows cannot be operated
from the rear when the override feature for
the side windows is activated (Y page 64).
X Turn the SmartKey to position 1or 2in the
ignition lock.
X To open: press the corresponding switch.
X To close: pull the corresponding switch.
i If you press the switch beyond the point
of resistance, an automatic opening/
closing process is started in the
corresponding direction .You can stop
automatic operation by operating the
switch again. 88
Side windowsOpening and closing

High-beam headlamps
X
To switch on the high-beam headlamps:
turn the SmartKey in the ignition lock to
position 2or start the engine.
X Turn the light switch to 000Bor0004.
X Press the combination switch beyond the
pressure point in the direction of
arrow 0002.
In the 0004position, the high-beam
headlamps are only switched on when it is
dark and the engine is running.
The 000A indicator lamp in the instrument
cluster lights up when the high-beam
headlamps are switched on.
X To switch off the high-beam
headlamps: move the combination switch
back to its normal position.
The 000A indicator lamp in the instrument
cluster goes out.
High-beam flasher X
To switch on: turn the SmartKey in the
ignitio nlock to position 1or 2or start the
engine.
X Pull the combination switch in the direction
of arrow 0022. Hazard warning lamps The hazard warning lamps automatically
switch on if:
R
an air bag is deployed.
R the vehicle is slowed down rapidly from a
speed of over 45 mph (70 km/h) and
comes to a halt.
X To switch on the hazard warning lamps:
press button 0002.
All turn signals flash. If you now switch on
a turn signal using the combination switch,
only the turn signal lamp on the
corresponding side of the vehicle will flash.
X To switch off the hazard warning
lamps: press button 0002.
If the vehicle returns to a speed of over
6m ph (10 km/h) after a full application of the
brakes, the hazard warning lamps are
deactivated automatically.
i The hazard warning lamps still operate if
the ignition is switched off. Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated five times while the lights are on and
the engine is running (Y page 125). When you
switch off the ignition, the automatic
headlamp cleaning system is reset and
counting is resumed from 0. Active light function Exterior lighting
117Lights and windshield wipers Z

Halogen headlamps
0002
Parking lamp/standing lamp: W 5W
0003 High-bea mheadlamp: H7 55 W
0022 Low-beam headlamp: H7 55 W Bi-Xenon headlamps
0002 Cornering lamp: H7 55 W Tail lamp
0002
Backup lamp: P 21 W
0003 Brake lamp: P 21 W
0022 Brake lamp/parking lamp: P 21 W Changing the front bulbs
Low-beam headlamps (halogen
headlamps) X
Switch off the lights.
X Open the hood.
X Turn housing cover 0002counter-clockwise
and pull it out.
X Turn bulb holder 0003counter-clockwise and
pull it out.
X Take the bulb out of bulb holder 0003.
X Inser tthe new bulb into bulb holder 0003.
X Insert bulb holder 0003into the lamp and turn
it clockwise.
X Align housing cover 0002and turn it
clockwise until it engages.
High-beam headlamps (halogen
headlamps) X
Switch off the lights.
X Open the hood. 122
Replacing bulbsLights and windshield wipers

Right-hand side trim panel
Left-hand side trim panel (vehicles with a sound
system)
X
To open: turn rotary catch 000290° in the
direction of the arrow and remove side trim
panel 0003.
X To close: insert side trim panel 0003and turn
rotary catch 000290° in the opposite
direction to the arrow. Left-hand side trim panel (vehicles without a sound
system) X
To open: loosen side trim panel 0002at the
top and fold it down in the direction of the
arrow.
X To close: insert side panel 0002.
Tail lamp X
Switch off the lights.
X Open the trunk.
X Open the side trim panel (Y page 123). X
Remove the tail lamp connector
X Simultaneously press retaining lugs 0002in
the direction of the arrow and slightly pull
out the bulb holder with th ebulbs.
X Remove the connector for LED light
functions from the top of the bulb holder.
X Pull the bulb holder out with the bulbs. 0002
Backup Light
0003 Brake lamp
0022 Parking lamp/brake lamp 124
Replacing bulbsLights and windshield wipers

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 25).Notes on breaking-in
anew vehicle Important safety notes
New and replaced brake pads and discs only
reach their optimum braking effect after
several hundred kilometers of driving.
Compensate for this by applying greater force
to the brake pedal. The first 1000 miles(1500 km)
The more you look after the engine when it is
new, the more satisfied you will be with its
performance in the future.
R You should therefore drive at varying
vehicle and engine speeds for the first
1000 miles (1500 km).
R Ideally, for the first 1,000 miles (1,500 km),
drive in program E(program Con AMG
vehicles).
R Avoid heavy loads, e.g .driving at full
throttle, during this period.
R Change gearing ood time, before the
tachometer needle is 0001of the way to the
red area of the tachometer.
R Do not manually shift to a lower gear to
brake the vehicle. R
If possible, do not depress the accelerator
pedal past the point of resistance
(kickdown).
R Only select shift ranges 3,2or 1when
driving slowly, e.g. in mountainous terrain.
After 1000 miles (1500 km), you can increase
the engine speed gradually and accelerate
the vehicle to full speed.
Additional breaking-in notes for AMG
vehicles:
R Do not drive faster than 85 mph
(140 km/h) for the first 1,000 miles
(1,500 km).
R Only allow the engine to reach a maximum
engine speed of 4,500 rpm briefly.
R Change gear in good time.
i You should also observe these notes on
breaking in if the engine or parts of the drive
train on your vehicle have been replaced.
i Always observe the respective speed
limits. AMG vehicles with self-locking rear
axle differential
Your vehicle is equipped with aself-locking
differential on the rear axle. To protect the
differential on the rear axle, carry out an oil
change after a breaking-in phase of
2,000 miles (3,000 km). This oil change
prolongs the service life of the differential.
Have the oil change carried out at a qualified
specialist workshop. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell can restrict the
pedal travel or obstruct adepressed pedal.
The operating and road safety of the vehicle
is jeopardized. There is a risk of an accident. 146
DrivingDriving and parking