warning MERCEDES-BENZ C300 4MATIC 2008 W204 Owner's Manual

Our company and staff congratulate you
on the purchase of your new
Mercedes-Benz.
Your selection of our product is a demon-
stration of your trust in our company
name. Furthermore, it exemplifies your de-
sire to own an automobile that will be as
easy as possible to operate and provide
years of service.
Your Mercedes-Benz represents the ef-
forts of many skilled engineers and crafts-
men. To help assure your driving pleasure,
and also the safety of you and your passen-
gers, we ask you to make a small invest-
ment of time:
Please read this manual carefully, then
return it to your vehicle where it will be
handy for your reference.

Please follow the recommendations
contained in this manual. They are de-
signed to acquaint you with the opera-
tion of your Mercedes-Benz.

Please pay attention to the warnings
and cautions contained in this manual.
They are designed to help improve the
safety of the vehicle operator and oc-
cupants.
We extend our best wishes for many miles
of safe, pleasurable driving.
Mercedes-Benz USA, LLC
A DaimlerChrysler Company

Contents
Controls in detail............................... 69
Locking and unlocking ......................... 70
SmartKey ....................................... 70
SmartKey with KEYLESS-GO*
(Canada only) ................................. 73
Checking batteries in the SmartKey
or SmartKey with KEYLESS-GO*
(Canada only) ................................. 78
Loss of the SmartKey or SmartKey
with KEYLESS-GO* (Canada only) .. 79
Opening doors from the inside ....... 79
Automatic central locking .............. 80
Locking and unlocking
from the inside ............................... 81
Starter switch positions ....................... 82
SmartKey ....................................... 82
SmartKey with KEYLESS-GO*
(Canada only) ................................. 83
Seats.................................................... 85
Seat adjustment ............................. 85
Lumbar support .............................. 91
Seat heating* ................................. 91Steering wheel ..................................... 93
Steering wheel adjustment,
manual ........................................... 93
Steering wheel adjustment,
electrical* (Canada only)................ 94
Easy-entry/exit feature*
(Canada only) ................................. 95
Mirrors ................................................. 97
Interior rear view mirror ................. 97
Exterior rear view mirrors............... 97
Power folding
exterior rear view mirrors* ............. 98
Interior rear view mirror,
antiglare position ........................... 99
Auto-dimming rear view mirrors* . 100
Activating exterior rear view mirror
parking position* (Canada only)... 101
Memory function* (Canada only) ....... 102
Storing positions into memory* ... 103
Recalling positions from memory* 103
Storing exterior rear
view mirror parking position*....... 104
Fastening the seat belts .................... 105
Proper use of seat belts ............... 106
Seat belt height adjustment ......... 107Lighting ............................................. 108
Exterior lamp switch .................... 108
Switching on high beams ............. 112
Headlamp cleaning system* ........ 112
Corner-illuminating front
fog lamps* (With Bi-Xenon*
headlamps only)........................... 112
Hazard warning flasher ................ 114
Interior lighting ............................ 114
Door entry lamps ......................... 116
Trunk lamp ................................... 116
Windshield wipers ............................. 117
Switching on/off
windshield wipers ........................ 118
Single wipe .................................. 118
Intermittent wiping ...................... 118
Wiping with
windshield washer fluid................ 119
Power windows ................................. 120
Opening and closing
power windows ............................ 120
Summer opening feature ............. 123
Convenience closing feature ........ 124

10 Introduction
Operator’s Manual
This Operator’s Manual contains a great
deal of useful information. We urge you to
read it carefully and familiarize yourself
with the vehicle before driving.
For your own safety and longer service life
of the vehicle, we urge you to follow the in-
structions and warnings contained in this
manual. Ignoring them could result in dam-
age to the vehicle or personal injury to you
or others. Vehicle damage caused by fail-
ure to follow instructions is not covered by
the Mercedes-Benz Limited Warranty.
Your vehicle may have some or all of the
equipment described in this manual.
Therefore, you may find explanations for
optional equipment not installed in your
vehicle. If you have any questions about
the operation of any equipment, your au-
thorized Mercedes-Benz Center will be
glad to demonstrate the proper proce-
dures.We continuously strive to improve our
product, and ask for your understanding
that we reserve the right to make changes
in design and equipment. Therefore, infor-
mation, illustrations and descriptions in
this Operator’s Manual might differ from
your vehicle.
Optional equipment is also described in
this manual, including operating instruc-
tions wherever necessary. Since they are
special-order items, the descriptions and
illustrations herein may vary slightly from
the actual equipment of your vehicle.
If there are any equipment details that are
not shown or described in this Operator’s
Manual, your authorized Mercedes-Benz
Center will be glad to inform you of correct
care and operating procedures. The Oper-
ator’s Manual and Maintenance Booklet
are important documents and should be
kept with the vehicle.Service and warranty information
The Service and Warranty Information
Booklet contains detailed information
about the warranties covering your
Mercedes-Benz, including:

New Vehicle Limited Warranty

Emission System Warranty

Emission Performance Warranty

California, Maine, Massachusetts, and
Vermont Emission Control System
Warranty
(California, Maine, Massachusetts, and
Vermont only)

State Warranty Enforcement Laws
(Lemon Laws)

14 Introduction
Symbols
Trademarks:

ESP® is a registered trademark of
DaimlerChrysler.

HomeLink® is a registered trademark
of Prince, a Johnson Controls
Company.

SIRIUS and related marks are trade-
marks of SIRIUS Satellite Radio Inc.The following symbols are found in this
Operator’s Manual:
* Optional equipment is identified
with an asterisk. Since standard
equipment varies between models,
the descriptions and illustrations in
this manual may differ slightly from
the actual equipment of your vehi-
cle.
This symbol points to instructions for
you to follow.
A number of these symbols appearing
in succession indicates a multiple-step
procedure.
 page This symbol tells you where to
look for further information on a
topic.
This continuation symbol marks
a warning which is continued on
the next page.
This continuation symbol marks
a procedure which is continued
on the next page.
-> This symbol is used to indicate
cross-references to term defini-
tions.
DisplayWords appearing in the multi-
function display and COMAND
display are printed in the type
shown here.
Warning!G
Warning notices draw your attention to haz-
ards that may endanger your health or life,
or the health or life of others.
!Highlights hazards that may result in dam-
age to your vehicle.
iHelpful hints or further information you may
find useful.

15 Introduction
Operating safety
Operating safety
Proper use of the vehicle
Proper use of the vehicle requires that you
are familiar with the following information
and rules:

the safety precautions in this manual

the “Technical data” section in this
manual

traffic rules and regulations

motor vehicle laws and safety stan-
dards
Warning!G
Work improperly carried out on electronic
components and associated software could
cause them to cease functioning. Because
the vehicle’s electronic components are in-
terconnected, any modifications made may
produce an undesired effect on other sys-
tems. Electronic malfunctions could seri-
ously impair the operating safety of your
vehicle.
See an authorized Mercedes-Benz Center
for repairs or modifications to electronic
components.
Other improper work or modifications on the
vehicle could also have a negative impact on
the operating safety of the vehicle.
Some safety systems only function while the
engine is running. You should therefore nev-
er turn off the engine while driving.
Warning!G
Heavy blows against the vehicle underbody
or tires/wheels, for example when running
over an obstacle, road debris or a pothole,
may cause serious damage and impair the
operating safety of your vehicle. If you feel a
sudden significant vibration or ride distur-
bance, or you suspect that damage to your
vehicle has occurred, you should turn on
your hazard warning flashers, carefully slow
down, and drive with caution to an area
which is a safe distance from the road.
Inspect the vehicle underbody and
tires/wheels for possible damage. If the ve-
hicle appears unsafe, have it towed to the
nearest authorized Mercedes-Benz Center
or other qualified maintenance or repair fa-
cility for further inspection or repairs.
Warning!G
Various warning labels are attached to your
vehicle. These warning labels are intended
to make you and others aware of various
risks. You should not remove any of these
warning labels unless explicitly instructed to
do so by information on the label itself. Re-
moval of any of these labels may cause you
and others to be unaware of certain risks
which may result in an accident and/or per-
sonal injury.

27 At a glance
Instrument cluster
ItemPage
1Combination gauge with:
Fuel gauge
4Fuel tank reserve
warning lamp
Coolant temperature gauge
ÌCoolant temperature
warning lamp
Indicator/warning lamps:
AHigh beam headlamp
indicator lamp
±Engine malfunction
indicator lamp
380
112
374
382
378
;
USA only
3
Canada onlyBrake warning
lamp376
2LLeft turn signal
indicator lamp131
ItemPage
3vElectronic Stability
Program (ESP®)
warning lamp
380
4Speedometer
5Multifunction display
6KRight turn signal
indicator lamp131
7Tachometer with:
HCombination low tire
pressure/TPMS
malfunction telltale,
USA only380
=SRS indicator lamp382
-Antilock Brake System
(ABS) indicator lamp59
<Seat belt telltale380
8Outside temperature
(manual transmission)
Outside temperature /
additional speedometer
(automatic transmission*)149
149,
169
ItemPage
9Outside temperature
(automatic transmission*)149,
169
aSelected program mode
indicator
(automatic transmission*)140
bGear position/range
indicator
(automatic transmission*)
Additional speedometer
(manual transmission)143
169
cDigital clock151
dInstrument cluster
illumination148

29 At a glance
Center console
Center console
Upper partItemPage
1Audio display cover180
2Hazard warning flasher
switch – switching on/off114
3Anti-theft alarm system
indicator lamp66
4Front passenger front
air bag off indicator lamp45,
385,
393
5ESP® control switch64
6Audio system,176
or
COMAND* (see separate
operating instructions)
ItemPage
7Seat heating*, passenger
side91
8Rear window sunshade
switch*290
9Dual-zone automatic
climate control250
3-zone automatic climate
control* (Canada only)259
Rear window defroster256,
265
aSeat heating*, driver’s side91

35 Safety and Security
Occupant safety
Warning!G
Modifications to or work improperly con-
ducted on restraint systems (such as seat
belts and anchors, Emergency Tensioning
Devices (ETDs), seat belt force limiters or air
bags) or their wiring, as well as tampering
with interconnected electronic systems, can
lead to the restraint systems no longer func-
tioning as intended.
Air bags or Emergency Tensioning Devices
(ETDs), for example, could deploy inadvert-
ently or fail to deploy in accidents although
the deceleration threshold for air bag de-
ployment is exceeded. Therefore, never
modify the restraint systems. Do not tamper
with electronic components or their soft-
ware.
Warning!G
In the event that the =indicator lamp
comes on during driving or does not come
on at all, the SRS self-check has detected a
malfunction. For your safety, we strongly
recommend that you contact an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not deploy when needed in an accident,
which could result in serious or fatal injury,
or it might deploy unexpectedly and unnec-
essarily which could also result in injury.
In addition, improper work on the SRS
creates a risk of rendering the SRS inopera-
tive or causing unintended air bag deploy-
ment. Work on the SRS must therefore only
be performed by qualified technicians. Con-
tact an authorized Mercedes-Benz Center.
If it is necessary to modify an air bag system
to accommodate a person with disabilities,
contact your local authorized
Mercedes-Benz Center or call our Customer
Assistance Center at 1-800-FOR-MERCedes
(1-800-367-6372) for details.

36 Safety and Security
Occupant safety
Air bags
Warning!G
Air bags are designed to reduce the poten-
tial of injury and fatality in certain frontal im-
pacts (front air bags), side impacts (front
side impact air bags, rear side impact air
bags* and window curtain air bags) or roll-
overs (window curtain air bags). However,
no system available today can totally elimi-
nate injuries and fatalities.
The deployment of the air bags temporarily
releases a small amount of dust from the air
bags. This dust, however, is neither injurious
to your health, nor does it indicate a fire in
the vehicle. The dust might cause some tem-
porary breathing difficulty for people with
asthma or other breathing trouble. To avoid
this, you may wish to get out of the vehicle
as soon as it is safe to do so. If you have any
breathing difficulty but cannot get out of the
vehicle after the air bag inflates, then get
fresh air by opening a window or door.
Warning!G
To reduce the risk of injury when the front
air bags inflate, it is very important for the
driver and front passenger to always be in a
properly seated position and to wear their
respective seat belt.
For maximum protection in the event of a
collision always be in normal seated position
with your back against the backrest. Fasten
your seat belt and make sure it is properly
positioned on your body.
Since the air bag inflates with considerable
speed and force, a proper seating and hands
on steering wheel position will help to keep
you at a safe distance from the air bag.
Occupants who are unbelted, out of position
or too close to the air bag can be seriously
injured or killed by an air bag as it inflates
with great force in the blink of an eye:

Sit properly belted in a nearly upright
position with your back against the seat
backrest.

Adjust the driver’s seat as far as possi-
ble rearward, still permitting proper op-
eration of vehicle controls. The distance
from the center of the driver’s breast-
bone to the center of the air bag cover
on the steering wheel must be at least
10 inches (25 cm) or more. You should
be able to accomplish this by a combina-
tion of adjustments to the seat and
steering wheel. If you have any prob-
lems, please see an authorized
Mercedes-Benz Center.

Do not lean your head or chest close to
the steering wheel or dashboard.

Keep hands on the outside of steering
wheel rim. Placing hands and arms in-
side the rim can increase the risk and
potential severity of hand/arm injury
when driver’s front air bag inflates.

Adjust the front passenger seat as far as
possible rearward from the dashboard
when the seat is occupied.

37 Safety and Security
Occupant safety

Always sit as upright as possible, prop-
erly use the seat belts and use an appro-
priately sized infant restraint, toddler
restraint, or booster seat recommended
for the size and weight of the child.
Failure to follow these instructions can
result in severe injuries to you or other
occupants.
If you sell your vehicle, it is important that
you make the buyer aware of this safety
information. Be sure to give the buyer this
Operator’s Manual.
Warning!G
Accident research shows that the safest
place for children in an automobile is in the
rear seat.
There is a possibility for a side impact air
bag related injury if occupants, especially
children, are not properly seated or re-
strained when next to a front side impact air
bag and/or rear side impact air bag* which
needs to deploy rapidly in a side impact in
order to do its job.
To help avoid the possibility of injury, please
follow these guidelines:
(1) Always sit as upright as possible,
properly use the seat belts, and for all
children 12 years old and under, use an
appropriately sized infant restraint, tod-
dler restraint, or booster seat recom-
mended for the size and weight of the
child.
(2) Always wear seat belts properly.iAir bags are designed to deploy only in cer-
tain frontal impacts (front air bags), and in side
impacts (front side impact air bags, rear side im-
pact* air bags, and window curtain air bags)
which exceed preset thresholds, and in certain
rollovers (window curtain air bags). Only during
these events will they provide their supplemental
protection.
The driver and passengers should always wear
their seat belts. Otherwise it is not possible for
air bags to provide their supplemental protec-
tion.
In case of other types of impacts and impacts be-
low air bag deployment thresholds, air bags will
not deploy. The driver and passenger will then be
protected to the extent possible by a properly
fastened seat belt. A properly fastened seat belt
is also needed to provide the best possible pro-
tection in a rollover.
We caution you not to rely on the presence of the
air bags in order to avoid wearing your seat belt.
It is important to your safety and that of your pas-
sengers that you replace deployed air bags and
repair any malfunctioning air bags to make sure
the vehicle will continue to provide supplemental
crash protection for occupants.