length MERCEDES-BENZ C-Class SEDAN 2014 W204 Owner's Manual

system no longer detects any other vehicles,
it reactivates the high-beam headlamps.
The system's optical sensor is located behind
the windshield near the overhead control
panel. Switching Adaptive Highbeam Assist
on/off X
To activate: activate the Adaptive
Highbeam Assist function using the on-
board computer (Y page 216).
X Turn the light switch to 0004.
X Press the combination switch beyond the
pressure point in the direction of arrow 0002
(Y page 116).
The 0003 indicator lamp in the
multifunction display lights up if it is dark
and the light sensor activates the low-beam
headlamps.
If you are driving at speeds above
approximately 28 mph (45 km/h):
The headlamp range is set automatically
depending on the distance between the
vehicle and other road users.
If you are driving at speeds above
approximately 35 mph (55 km/h) and no
other road users have been detected: The high-beam headlamps are switched on
automatically. The
000Aindicator lamp in
the instrument cluster also lights up.
If you are driving at speeds below
approximately 30 mph (45 km/h) or other
road users have been detected or the roads
are adequately lit:
The high-beam headlamps are switched off
automatically. The 000Aindicator lamp in
the instrument cluster goes out. The 0003
indicator lamp in the multifunction display
remains lit.
X To deactivate: move the combination
switch back to its normal position.
The 0003 indicator lamp in the
multifunction display goes out. Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
X Switch on the lights and drive off.
The level of moisture diminishes,
depending on the length of the journey and
the weather conditions (humidity and
temperature).
If the level of moisture does not diminish:
X Have the headlamps checked at a qualified
specialist workshop. Exterior lighting
119Lights and windshield wipers Z

ATTENTION ASSIST
Important safety notes ATTENTION ASSIST is only an aid to the
driver. It might no
talways recognize fatigue
or increasing inattentiveness in time or fail to
recognize the matall. The system is not a
substitute for a well-rested and attentive
driver.
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways.
It is active in the range between 50 mph
(80 km/h) and 112 mph (180 km/h).
If ATTENTION ASSIST detects typical
indicators of fatigue or increasing lapses in
concentration on the part of the driver, it
suggests you take a break.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria int oaccount:
R your personal driving style, e.g. steering
characteristics
R journey details, e.g. time of day and length
of journey
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R if the road condition is poor, e.g. if the
surface is uneven or if there are potholes
R if there is a strong sid ewind
R if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you are predominantly driving slower
than 50 mph (80 km/h) or faster than
112 mph (180 km/h)
R if you are currently using COMAND or
making a telephone call with it
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed Warning and display messages in the
multifunction display X
Activate ATTENTION ASSIST using the on-
board computer (Y page 214).
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after your
journey has begun. You the nhear an
intermittent warning tonet wice and the
Attention Assist: Drowsiness detected message appears in the
multifunction display.
X If necessary, take a break.
X Press the 000Bbutton to confirm the
message.
On long journeys, take regular breaks in good
time to allow yourself to res tproperly. If you
do not take a break, you will be warned again
after 15 minutes at the earliest. The
precondition for this is that
ATTENTION ASSIST still detects typical
indicators of fatigue or increasing lapses in
concentration.
ATTENTION ASSIST is reset when you
continue yourj ourney and starts assessing
your tiredness again if:
R you switch off the engine.
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break.
The assistance graphic shows the 0002
symbol when ATTENTION ASSIST is
deactivated (Y page 213). Lane Tracking package
General notes The Lane Tracking package consists of Blind
Spot Assist (Y
page 193) and Lane Keeping
Assist (Y page 194). 192
Driving systemsDriving and parking

You cannot delete individual stored laps. If
you have stopped 16 laps, the current lap
does not have to be reset.
X Reset the current lap.
X Press 000Bto confirm Reset .
Reset Race Timer? appears in the
multifunction display. X
Press the 0004button to select Yes and
press the 000Bbutton to confirm.
All laps are deleted.
Overall statistics This function is shown if you have stored at
least one lap and stopped the RACETIMER.
X Press 0002or0005 on the steering wheel
to selec tthe AMG menu.
X Press the 0003button repeatedly until the
overall evaluation is shown. 0002
RACETIMER overall evaluation
0003 Total time driven
0022 Average speed
0021 Distance covered
001F Maximum speed Lap statistics This function is only available if you have
stored at least two laps and have stopped the
RACETIMER.
X
Press 0002or0005 on the steering wheel
to select the AMG menu.
X Press the 0003button repeatedly until the
lap evaluation is shown.
Each lap is shown in a separate submenu.
The fastest lap is indicated by flashing
symbol 0002. 0002
Lap
0003 Lap time
0022 Average lap speed
0021 Lap length
001F Top speed during lap
X Press the 0003or0004 button to select a
different lap evaluation. Menus and submenus
221On-board computer and displays Z

Otherwise, the vehicle's electronic
system may be damaged.
R the transmission is locked in position P
after disconnecting the battery. The
vehicle is secured against rolling away.
You can then no longer move the vehicle.
The battery and the cover of the positive
terminal clamp must be installed securely
during operation.
Comply with safety precautions and take
protective measures when handling
batteries. Risk of explosion.
Fire, open flames and smoking are
prohibited when handling the
battery. Avoid creating sparks.
Battery acid is caustic. Avoid
contact with skin, eyes or clothing.
Wear suitable protective clothing,
especially gloves, apron and
faceguard.
Rinse any acid spills immediately
with clear water. Contact a
physicianifn
ecessary. Wear eye protection.
Keep children away.
Observe this Operator's Manual.
In order for the battery to achieve the
maximum possible service life, it must always
be sufficiently charged.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standing idle
for a lengthy period. Consult a qualified specialist workshop if you wish to leave your
vehicle parked for a long period of time.
Like other batteries, the vehicle battery may
discharge over time if you do not use the
vehicle. In this case, have the battery
disconnected at a qualified specialist
workshop. You can also charge the battery
with a charger recommended by Mercedes-
Benz. Contac
taqualified specialist workshop
for further information.
i Remove the SmartKey if you park the
vehicle and do not require any electrical
consumers. The vehicle will then use very
little energy, thus conserving battery
power.
i If the power supply has been interrupted,
e.g. if you reconnec tthe battery, you will
have to:
R set the clock; see the separate operating
instructions.
On vehicles with COMAND and a
navigation system, the clock is set
automatically.
R reset the function for folding the exterior
mirrors in/out automatically by folding
the mirrors out once (Y page 108)11
. Charging the battery
G
WARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a
risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over a battery. G
WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with the skin, eyes or clothing.
Do not inhale any battery gases. Do not lean
over the battery. Keep children away from
11 This function is only available in vehicles for Canada. 304
Battery (vehicle)Breakdown assistance

Jump-starting
For the jump-starting procedure, use only the jump-starting connection point, consisting of a
positive terminal and a ground point, in the engine compartment. G
WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with the skin, eyes or clothing. Do not inhale any battery gases. Do not lean over
the battery. Keep children away from batteries. Wash battery acid immediately with water and
seek medical attention. G
WARNING
During charging and jump-starting, explosive gases can escape from the battery. There is a risk
of an explosion.
Particularly avoid fire, open flames, creating sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting. Do not lean over a battery. G
WARNING
During the charging process, a battery produces hydrogen gas. If a short circuit occurs or sparks
are created, the hydrogen gas can ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a connected battery does not come into contact with
vehicle parts.
R Never place metal objects or tools on a battery.
R It is important that you observe the described order of the battery terminals when connecting
and disconnecting a battery.
R When jump-starting, make sure that the battery poles with identical polarity are connected.
R It is particularly important to observe the described order when connecting and disconnecting
the jumper cables.
R Never connect or disconnect the battery terminals while the engine is running. G
WARNING
Non-combusted fuel can collect in the exhaust system and ignite. There is a risk of fire. Avoid
repeated and lengthy starting attempts.
! Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could be
damaged by the non-combusted fuel.
Do not start the vehicle using a rapid charging device. If your vehicle's battery is discharged,
the engine can be jump-started from another vehicle or from a second battery using jumper
cables. Observe the following points:
R The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible,
jump-start the vehicle using a second battery or ajump-starting device.
R You may only jump-start the vehicle when the engine and exhaust system are cold.
R Do not start the engine if the battery is frozen. Let the battery thaw first.
R Jump-starting may only be performed from batteries with a nominal voltage of 12 V. 306
Jump-startingBreakdown assistance

X
Make sure the foot of the jack is directly
beneath the jacking point.
X Turn crank 0021clockwise until jack 0022sits
completely on jacking point 0003and the
base of the jack lies evenly on the ground.
X Turn crank 0021until the tire is raised a
maximum of 1.2 in (3 cm) from the ground. Removing
awheel
! Do not place wheel bolts in sand or on a
dirty surface. The bol tand wheel hub
threads could otherwise be damaged when
you screw them in.
X Unscrew the wheel bolts.
X Remove the wheel. Mounting
anew wheel G
WARNING
Oiled or greased wheel bolts or damaged
wheel bolts/hub threads can cause the wheel
bolts to come loose .As a result, you could
lose a wheel while driving. There is a risk of
accident.
Never oil or grease wheel bolts. In the event
of damage to the threads, contact a qualified
specialist workshop immediately.H ave the
damaged wheel bolts or hub threads
replaced/renewed. Do no tcontinue driving. G
WARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
Always pay attention to the instructions and
safety notes in the "Changing a wheel"
section (Y page 338).
Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety
reasons, Mercedes-Benz recommends that
you only use wheel bolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel.
Be sure to use the original-length wheel bolts
when re-mounting the original wheel after it
has been repaired.
! To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt. X
Clean the wheel and wheel hub contact
surfaces.
X Place the new wheel on the wheel hub and
push it on.
X Tighten the wheel bolts until they are
finger-tight. Mounting
awheel
341Wheels and tires Z

Service work, such as topping-up refrigerant
or replacing components, may only be carried
ou tb y a qualified specialist workshop .All
applicable regulations must be adhered to,
SAE standard J639 included.
Always have work on the climate control
system carried out at a qualified specialist
workshop.
Refrigerant instruction label Example: refrigerant instruction label
0002
Warning symbol
0003 Refrigeran tfilling capacity
0022 Applicable SA Estandards
0021 PAG oil part number
001F Type of refrigerant
Warning symbols 0002indicate:
R possible dangers
R that it is necessary to have maintenance
work carried ou tataqualified specialist
workshop
Filling capacities Missing values were not available at time of
going to print.
All models Capacity
Refrigerant
20.8 ± 0.4 oz
(590 ± 10 g) PAG oil
4.2 oz
(120 g) Vehicle data
General notes
Please note that for the specified vehicle
data:
R the heights specified may vary as a result
of:
-tires
- load
- condition of the suspension
- optional equipment
R optional equipment reduces the maximum
payload. Dimensions and weights
Model 0002 Opening height
All models
69.2 in
(1757 mm) Missing values were not available at time of
going to print.
All models (except
for AMG vehicles)
Vehicle length
180.7 in (4591 mm)
Vehicle width
including exterior
mirrors
79.1 in (2008 mm)
Vehicle height
56.9 in (1444 mm)
Wheelbase
108.7 in (2760 mm)358
Vehicle dataTechnical data

All models (except
for AMG vehicles)
Turning radius
35.6 ft (10.84 m)
Maximum roof load
max. 220 lb
(100 kg) Maximum trunk
load
max. 220 lb
(100 kg) C 63 AMG
Vehicle length
185.1 in (4702 mm)
Vehicle width
including exterior
mirrors
79.1 in (2008 mm)
Vehicle height
56.4 in (1433 mm)
Wheelbase
108.9 in (2765 mm)
Turning radius
36.4 ft (11.10 m)
Maximum roof load
max. 220 lb
(100 kg) Maximum trunk
load
max. 220 lb
(100 kg) Vehicle data
359Technical data Z