2004 MERCEDES-BENZ C320 4MATIC WAGON service

14 IntroductionWhere to find it
Where to find itThis Operator’s Manual is designed to pro-
vide comprehensive support information
for you, the vehicle operator. Each section
has its own reference color so you can find
information quickly.At a glance
Here you will find an overview of all the
controls that can be operated from the
driver’s seat.Getting started
Here you will find all the information you
need for your first drive. You should read
this section first if this is your first
Mercedes-Benz vehicle or if you are rent-
ing or borrowing this vehicle.Safety and Security
H e r e y o u w i l l f i n d d e s c r i p t i o n s o f t h e s a f e t y
features of your vehicle.
Controls in detail
Here you will find detailed information
about the equipment installed in your vehi-
cle. This section expands on the “Getting
started” section and also describes techni-
cal innovations. If you are already familiar
with the basic functions of your vehicle,
this section will be of particular interest to
you.Operation
Here you will find all the information you
need for the proper operation of your vehi-
cle.Practical hints
This section provides fast assistance for
dealing with problems you may encounter.
Technical data
All important technical data for your vehi-
cle can be found in this section.Indexes
The glossary provides explanations of the
most important technical terms.
The table of contents and the index are de-
signed to help you find information quickly
and easily.
The following publications are part of your
vehicle documentation:

this Operator’s Manual


the Service Booklet
Separate operating instructions will be
provided as required depending on the
equipment options installed in your vehi-
cle.

45 Getting started
Driving

Release parking brake by pulling on
handle1.
The warning lamp; (USA only)
or3 (Canada only) in the
instrument cluster goes out.
Driving

Depress the brake pedal.

Move gear selector lever to positionD
orR.

Release the brake pedal.

Carefully depress the accelerator.
Once the vehicle is in motion, the auto-
matic central locking system engages
and the locking knobs drop down.After a cold start, the automatic transmis-
sion shifts at a higher engine revolution.
This allows the catalytic converter to reach
its operating temperature earlier.iWait for the gear selection process to
complete before setting the vehicle in
motion.
iYou can open a locked door from the
inside. Open door only when conditions
are safe to do so.
You can deactivate the automatic
locking using the control system
(page 131).
!Simultaneously depressing the
accelerator pedal and applying the
brake reduces engine performance and
causes premature brake and drivetrain
wear.!If you hear a warning signal when driv-
ing off, you have forgotten to release
the parking brake.
Release the parking brake.
Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of loss of control.!Place the gear selector lever in
positionR only when the vehicle is
stopped in order to avoid damaging the
transmission.!Do not run cold engine at high engine
speeds. Running a cold engine at high
engine speeds may shorten the service
life of the engine.

80 Safety and SecurityAnti-theft systems
Anti-theft systemsImmobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating

Removing the SmartKey from the
starter switch activates the
immobilizer.
Deactivating


Inserting the SmartKey in the starter
switch deactivates the immobilizer.
Anti-theft alarm system*
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens

a door


the tailgate


the hood
The alarm will stay on, even if the
activating element (a door, for example) is
immediately closed.
The alarm system will also be triggered
when


someone attempts to raise the vehicle


opening the vehicle with the
mechanical keyArming the alarm system
The alarm system is armed after locking
the vehicle with the SmartKey. The turn
signal lamps flash three times to indicate
that the alarm system is activated. A red
indicator lamp in the switch for the
tow-away alarm (
page 81) begins to
flash after approx. ten seconds after
arming the alarm system.
iIn case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Center
or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).
iIf the alarm stays on for more than
20 seconds, an emergency call is
initiated automatically by the Tele Aid
system* (
page 222) provided
Tele Aid service was subscribed to and
properly activated, and that necessary
cellular service and GPS coverage are
available.

81 Safety and Security
Anti-theft systems
Disarming the alarm system
The alarm system is disarmed when you
unlock your vehicle with the SmartKey. The
turn signal lamps flash once to indicate
that the alarm system is deactivated.
Canceling the alarm
To cancel the alarm:
Insert the SmartKey in the starter
switch.
or

Press theŒ or‹ button on the
SmartKey.
Tow-away alarm*
Once the tow-away alarm is armed, a visual
and audible alarm will be triggered when
someone attempts to raise the vehicle.
iIf the turn signal lamps do not flash
three times, one of the following
elements may not be properly closed:

a door


the tailgate
Close the respective element and lock
the vehicle again.
iThe alarm system will rearm automati-
cally after approximately 40 seconds if
no door or the tailgate lid was opened.
iThe tow-away protection alarm is
triggered, for example, if the vehicle is
lifted on one side.
If the alarm stays on for more than
20 seconds, an emergency call is
initiated automatically by the Tele Aid
system* (
page 222) provided
Tele Aid service was subscribed to and
properly activated, and that necessary
cellular service and GPS coverage are
available.

111 Controls in detail
Control system
Control system
The control system is activated as soon as
the SmartKey in the starter switch is
turned to position1. The control system
enables you to

call up information about your vehicle


change vehicle settings
For example, you can use the control
system to find out when your vehicle is
next due for service, to set the language
for messages in the instrument cluster
display, and much more.
The control system relays information to
the multifunction display.
Multifunction display
1Outside temperature
2Main odometer
3Trip odometer
4Automatic transmission program mode
5Current gear selector lever position
6Digital clock
iThe displays for the audio systems
(radio, CD player, cassette player) will
appear in English, regardless of the
language selected.
Warning!
G
A driver’s attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions
permit it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 13.5 m) every second.

169 Controls in detail
Audio system
Audio system
Audio and telephone, operation
These instructions are intended to help
you become familiar with your
Mercedes-Benz audio system. They con-
tain useful tips and a detailed description
of the user functions.
Operating safety
Warning!
G
In order to avoid distraction which could
lead to an accident, the driver should enter
system settings with the vehicle at a stand-
still and operate the system only when road
and traffic conditions permit. Always pay full
attention to traffic conditions first before
operating system controls while driving.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is cover-
ing a distance of 50 feet (approximately
14 m) every second.
Warning!
G
Any alterations made to electronic compo-
nents can cause malfunctions.
The radio, amplifier, CD changer*, satellite
radio*, telephone* and voice control sys-
tem* are interconnected. When one of the
components is not operational or has not
been removed/replaced properly, the func-
tion of other components may be impaired.
This condition might seriously impair the
operating safety of your vehicle.
We recommend that you have any service
work on electronic components carried out
by an authorized Mercedes-Benz Center.

178 Controls in detailAudio systemWeather band
Press the
WB key.
The weather band station last selected
is tuned in.

Select the desired weather band
station with buttons4 to7.
If a station cannot be tuned in, a scan
is automatically started.

Pressf or ebutton. The next
receivable weather band station is
tuned in.
Satellite radio (SAT)* (USA only)Sirius Satellite Radio provides 100 chan-
nels of digital-quality radio, among others
music, sports, news, and entertainment,
free of commercials. Sirius Satellite Radio
uses a fleet of high-power satellites to
broadcast 24 hours per day
coast-to-coast.
This diverse, satellite-delivered program-
ming is available for a monthly subscrip-
tion fee.
For more information, call the Sirius ser-
vice or contact www.siriusradio.com
Program categories
The channels are categorized. The catego-
ries allow you to tune to stations broad-
casting a certain type of program
(PTY mode) (
page 181).
iAdditional optional satellite radio
equipment and a subscription to
satellite radio service provider is re-
quired for the satellite radio operation
described here. Feature description is
based on preliminary information
available at time of printing.
At time of printing, no date for the
availability of optional equipment re-
quired for satellite radio operation had
been set. Contact your authorized
Mercedes-Benz Center for details and
availability for your vehicle.
Satellite radio service may be unavail-
able or interrupted from time to time
for a variety of reasons, such as envi-
ronmental or topographic conditions
and other things we can't control.
Service might also not be available in
certain places (e.g., in tunnels, parking
garages, or within or next to buildings)
or near other technologies.

179 Controls in detail
Audio system
Starting satellite radio (SAT)
Start radio mode.
If the radio was in SAT radio mode be-
fore being turned off or changed to an-
other operating mode, the last SAT
channel selected is called up.
or

Press the
SAT
key.
When you call up the SAT radio mode
for the first time,
ACQUIRING
will appear
on the display during the initialization
process.
or
The last channel selected is called up.Entering the Electronic Serial Number
(ESN)
The first time SAT radio is called up, you
must give your SAT radio provider the Elec-
tronic Serial Number (ESN) of your SAT re-
ceiver over the telephone.

Press the
SAT
key.
The radio switches to SAT mode.
CALL SIRI
appears on the display.

Press the
ESN
key.
The provider’s phone number will ap-
pear first. After pressing the
ESN
key
again, the ESN number will appear.
Make note of the phone number and
ESN number.

Press the
ESN
key repeatedly until all
required information has appeared on
the display.

Call the telephone number and give
provider your ESN number.iCredit card information is also required
for your application.
The activation process takes approxi-
mately five to ten minutes after calling
the SIRIUS Service Center.