2003 MERCEDES-BENZ C320 r button

237 Operation
Engine compartment
You can check the engine oil level on the
multifunction display.
Turn the key in the starter switch to
position2.
The standard display (
page 116) should
appear in the multifunction display.

Press button
k
or
j
, on the
steering wheel until the following mes-
sage is seen in the multifunction dis-
play:
ENGINE OIL LEVEL - MEASUREMENT IN
PROCESS! CORRECT MEASUREMENT ONLY
IF VEH. LEVEL
After about three seconds this mes-
sage is displayed: ENGINE OIL LEVEL – MEASURING NOWOne of the following messages will sub-
sequently appear in the indicator:

ENGINE OIL LEVEL – OK



ENGINE OIL LEVEL – ADD
1 QUART (1.0 LITER)!


ENGINE OIL LEVEL – ADD
1.5 QUARTS (1.5 LITERS)!


ENGINE OIL LEVEL – ADD
2 QUARTS (2.0 LITERS)!
Adding engine oil
1Filler neck
Unscrew the cap from filler neck1. Be
careful not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.

Screw the cap back on the filler neck.!Excessive oil must be siphoned or
drained off. It could cause damage to
the engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.

248 OperationMaintenanceCalling up the service indicator
Switch ignition on.
The standard display of the control sys-
tem appears (
page 116).

Press button
k
or
j
on the mul-
tifunction steering wheel until the FSS
indicator appears in the multifunction
display.
Resetting the service indicator
In the event that the service on your vehi-
cle is not carried out by an authorized
Mercedes-Benz Center, you can reset the
service indicator yourself.
Switch ignition on.
The standard display of the control sys-
tem appears (
page 116).

Press button
k
or
j
on the mul-
tifunction steering wheel until the FSS
indicator appears in the multifunction
display.

Press the reset knob for about four
seconds.
This message appears in the tachome-
ter:DO YOU WANT TO RESET SERVICE INTER-
VAL? CONFIRM BY PRESSING RESET (R)
BUTTON

To confirm, hold down the reset knob
until you hear a signal.The service indicator now displays the
reset interval.
iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the service indica-
tor. To arrive at the true service dead-
line, you will need to subtract these
days from the days shown in the ser-
vice indicator.
Do not confuse the service indicator
with the engine oil level indicator
:
.
iIf the service indicator was inadvertent-
ly reset, have a Mercedes-Benz Center
correct it.
Only reset if the proper service has
been performed. Resetting the system
without performing proper service as
called for by the FSS will cause the FSS
to incorrectly determine the next
service interval which will result in
engine damage not covered by the
Mercedes-Benz Limited Warranty.

277 Practical hints
What to do if …
Display
Possible cause
Suggested solution
L
TELE AID
VISIT WORKSHOP!
One or more main functions of the Tele
Aid system* are malfunctioning.

Have the Tele Aid system* checked by
an authorized Mercedes-Benz Center.
ì
FUNCTION
NOT AVAILABLE!
This display appears if button
ì

or
í
on the multifunction steering
wheel is pressed and the vehicle is not
equipped with a telephone*.
1
RESTRAINT SYSTEM
VISIT WORKSHOP!
The system is malfunctioning.

Drive with added caution to the
nearest authorized Mercedes-Benz
Center.
Warning!
G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not be activated when needed in an
accident, which could result in serious or
fatal injury, or it might deploy unexpectedly
and unnecessarily which could also result in
injury.

285 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
In case of a malfunction in the central lock-
ing system you can unlock the trunk sepa-
rately (
page 91).
Unlocking the driver’s door
If you are unable to unlock the driver’s
door using the SmartKey, open the door
using the mechanical key.
1Mechanical key locking tab
2Mechanical key

Move locking tab1 in direction of ar-
row and slide the mechanical key2 out
of the housing.
3Unlocked
4Locked

Unlock the door with the mechanical
key. To do so, push the mechanical key
in the lock until it stops and turn it to
the left3.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:

Press button
Œ
or
‹
on the
SmartKey.


Insert the key in the starter switch.

341 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Alignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.
BabySmart
TM
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (indicator
lamp
7
located in the center con-
sole lights up). See your authorized
Mercedes-Benz Center for availability. BabySmart
TM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger side airbag if a BabySmart
TM
compatible child seat is installed.
BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
Bi-Xenon headlamps*
Headlamps which use an electric arc as
the light source and produce a more
intense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control
vehicle functions such as door locking
or windshield wiping.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.

342 Technical termsCOMAND*
(C
ockpit M
anagement and D
ata
System)
Information and operating center for
vehicle sound and communications
systems, including the radio and navi-
gation system, as well as for other
optional equipment (CD changer,
telephone, etc.).
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.
Cruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.
Engine oil viscosity
Measurement for the inner friction (vis-
cosity) of the oil at different tempera-
tures. The higher the temperature an
oil can tolerate without becoming thin,
or the lower the temperature it can tol-
erate without becoming viscous, the
better the viscosity.
ESP
(E
lectronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRSFSS
(F
lexible S
ervice S
ystem)
Service indicator in the multifunction
display that informs the driver when
the next vehicle maintenance service is
due.
Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the selector lever.
GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers. Employs CD digital maps for
navigation.
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer
and fuel gauge.

343 Technical terms
Kickdown
Depressing the accelerator past the
point of resistance shifts the transmis-
sion down to the lowest possible gear.
This very quickly accelerates the vehi-
cle and should not be used for normal
acceleration needs.
Lock button
Button on the door which indicates
whether the door is locked or un-
locked. Pushing the lock button down
on an individual door from inside will
lock that door.
Memory function*
Used to store three individual seat,
steering wheel and mirror positions for
each key.Menu
The control system displays are ar-
ranged in menus. Each menu contains
a number of commands for particular
systems. In the Audio menu, for exam-
ple, you will find the commands
SELECT
RADIO STATION
or
OPERATE CD PLAYER
.
Using commands you can directly
change the settings for your vehicle.
MON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized meth-
od. It is an indication of a gasoline's
ability to resist undesired detonation
(knocking). The average of both the
MON (Motor Octane Number) and
->RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.Multifunction display
The display field in the instrument clus-
ter used to present information provid-
ed by the control system.
Multifunction steering wheel
Steering wheel with buttons for operat-
ing the control system.
Overspeed range
Engine speeds within the red marking
of the tachometer dial. Avoid this en-
gine speed range, as it may result in se-
rious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.

348 IndexAir vents, rear passenger compartment
Adjustable 155, 164
Air volume
Adjusting 151, 159
AIRBAG OFF indicator lamp 260
Airbags 57
BabySmart
TM deactivation
system 67, 341
Children 58
Front 60
Passenger 61
Safety guidelines 59
Side impact 61
Window curtain 61
Alarm
Audible 72, 80
Canceling 80
Visual 79
Alarm system
Anti-theft 79
Tow-away 80
Alignment bolt (vehicle tool kit) 299, 341
Anticorrosion/antifreeze 337
Antiglare
Automatic* 144
Manual 144Antilock brake system (ABS) 341
Anti-theft alarm system
Arming 79
Canceling alarm 80
Disarming 80
Anti-theft systems 79
Anti-theft alarm system 79
Immobilizer 79
Tow-away alarm 80
Aquaplaning see Hydroplaning 227
Armrest
Storage compartment in front of 205
Storage spaces 206
Ashtray 207
ATF (automatic transmission fluid) 238
AUDIO menu 116
Selecting radio station 117
Audio system 165
Audio and telephone, operation 165
Button and soft key operation 168
Cassette mode 174
CD mode 178
Operating and display elements 166
Operating safety 165
Operation 168
Radio mode 171Switching off 168
Switching on 168
Telephone operation 182
Automatic antiglare*
for rear view mirror 144
Automatic central locking
Activating/deactivating
(control system) 129
Automatic climate control* 156
Activating 157
Adjusting air distribution 159
Adjusting air volume 159
Air recirculation mode 160
Deactivating 157
Defrosting 160
Rear window defroster 153, 162
Residual heat utilization 163
Residual ventilation 163
Setting the temperature 158
Automatic headlamp mode 102
Automatic lighting control
Activating 105
Deactivating 105
Automatic locking when driving 91