2003 MERCEDES-BENZ C320 COUPE airbag

202 Controls in detailUseful featuresSystem self-check
Initially, after turning the key in starter
switch to position2, malfunctions are de-
tected and indicated (the indicator lamps
in the SOS button, the Roadside Assis-
tance button
•
and the Information
button
¡
stay on longer than
10 seconds or do not come on). The mes-
sage
TELE AID – VISIT WORKSHOP!
ap-
pears for approx. 10 seconds in the
multifunction display.Emergency calls
An emergency call is initiated automatical-
ly:


following an accident in which the
emergency tensioning devices (ETDs)
or airbags deploy


if the anti-theft alarm or the tow-away
alarm stays on for more than
20 seconds. See anti-theft alarm sys-
tem (
page 78)and tow-away alarm
(
page 79)
An emergency call can also be initiated
manually by opening the cover next to the
inside rear view mirror labeled “SOS”, then
briefly pressing the button located under
the cover. See below for instructions on
initiating an emergency call manually.
Once the emergency call is in progress, the
indicator lamp in the “SOS” button will be-
gin to flash. The message
EMERGENCY CALL
– CONNECTING CALL
appears in the multi-
function display. When the connection is
established, the message
EMERGENCY CALL
– CALL CONNECTED
appears in the multi-
Warning!
G
If the indicator lamps in the SOS button, in
the Roadside Assistance button and/or in
the Information button do not come on dur-
ing the system self-check or if any of these
indicators remain illuminated constantly in
red and/or the message
TELE AID defec-
tive – VISIT WORKSHOP!
is displayed in
the multifunction display after the system
self-check, a malfunction in the system has
been detected.
If a malfunction is indicated as outlined
above, the system may not operate as ex-
pected. Have the system checked at the
nearest Mercedes-Benz Center as soon as
possible.

248 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
1
The red SRS indicator lamp lights
up while driving.
There is a malfunction in the restraint sys-
tems. The airbags or emergency tensioning
device (ETDs) could deploy unexpectedly or
fail to activate in an accident.

Drive with added caution to the near-
est authorized Mercedes-Benz Cen-
ter.
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 acci-
dent, which could result in serious or fatal
injury, or it might deploy unexpectedly and
unnecessarily which could result in an acci-
dent and/or injury to you or to others.

251 Practical hints
What to do if …
Lamp in center consoleProblem
Possible cause
Suggested solution
7
The indicator lamp lights up.
A BabySmart
TM child seat is installed on the
front passenger seat. Therefore the front
passenger airbag is switched off.
The system is malfunctioning when there is
no BabySmart
TM child seat installed on the
front passenger seat.

Have the system checked as soon as
possible by an authorized
Mercedes-Benz Center.
7
The indicator lamp does not light
up with a BabySmart
TM child
seat properly installed on the
front passenger seat.
The system is malfunctioning.

Make sure that there is nothing be-
tween seat cushion and child seat and
check installation of the child seat.

If the light remains out, have the sys-
tem checked as soon as possible by
an authorized Mercedes-Benz Center.
Do not use the BabySmart
TM restraint
to transport children on the front pas-
senger seat until the system has been
repaired.

327 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
in the center console 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 in-
tense 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 ve-
hicle 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.

330 Technical termsPower train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles, includ-
ing


engine


clutch/torque converter


transmission


transfer case


drive shaft


differential


axle shafts/axlesPoly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.
Program mode selector switch
Used to switch the automatic transmis-
sion between standard operationS and
winter operationW.
Remote Vehicle Diagnostics
Transmission of vehicle data and cur-
rent location to the Mercedes-Benz
Customer Assistance Center for sub-
scribers to Tele Aid service.
Restraint systems
Seat belts, belt tensioners, airbags and
child restraint systems. As indepen-
dant systems, their protective func-
tions complement one another.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as AN-
TI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock
prevents the transmission selector le-
ver from being moved out of positionP
without key turned and brake pedal de-
pressed.

331 Technical terms
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.
Tele Aid* System
(T
elematic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
viding that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.
Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is ap-
proved.
Traction
Force exerted by the vehicle on the
road via the tires.VIN
(V
ehicle I
dentification N
umber)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.
Voice control system*
Voice control system for car phones,
portable cell phones and audio sys-
tems (radio, CD, etc.).

333 Index
A
ABS 23, 73, 327
ABS control 74
Malfunction indicator lamp 247
Messages in display 253
Warning lamp 247
Accelerator position, automatic transmis-
sion 137
Accident
In case of 50
Activating
Air conditioning (cooling) 148, 157
Air recirculation mode 146, 154
Anti-theft alarm system 78
Automatic climate control 151
Central locking (control system) 122
Climate control 143
Defrost 146, 154
Easy-entry/exit feature 123
ESP 77
Exterior headlamps 47
Exterior lamps 97
Hazard warning flasher 99
Headlamps 47
High beams 99
Ignition 31Immobilizer 53, 78
Rear fog lamp 97
Rear window defroster 147, 156
Residual heat 158
Seat heater* 92
Tow-away alarm 79
Windshield wipers 48
Adding
Coolant 230
Engine oil 228
Additional turn signals 280
Adjustable air outlets, rear passenger com-
partment 149, 158
Adjusting 32
Air distribution 145, 153
Air volume 145, 153
Backrest tilt 33, 35
Exterior rear view mirror 40
Head restraint height 33, 35, 37
Head restraint tilt 34, 35
Head restraints 37
Inside rear view mirror 39
Instrument cluster illumination 102
Manual seat 33
Mirrors 39
Rear seat head restraints 36Seat cushion tilt 33, 35
Seat fore and aft adjustment 33, 34
Seat height 33, 35
Seats 32
Steering column height 39
Steering column length 39
Steering wheel 37
Air conditioner (cooling)
Turning off 148, 157
Turning on 148, 157
Air conditioner refrigerant 319
Air distribution
Adjusting 145, 153
Air outlets, rear passenger compartment
Adjustable 149, 158
Air pressure see Tire inflation pressure 234
Air recirculation mode 146, 154
Activating 146, 154
Deactivating 147, 155
Air volume
Adjusting 145, 153
AIRBAG OFF indicator lamp 251
Airbags 57
BabySmart
TM airbag deactivation
system 327
BabySmartTM deactivation system 67

335 Index
Program mode selector switch 136
Selector lever position 132
Starting with 45
Transmission fluid 229
Winter program mode 136
Auxiliary fuse box 304
B
BabySmart
TM
Airbag deactivation system 67
Compatible child seats 67, 327
Self-test 68
BabySmart
TM airbag deactivation system
327
Backrest
Folding forward 193
Folding rearward 193
BAS 74, 327
Messages in display 254
Batteries, SmartKey
Changing 276
Check lamp 83
Checking 84
Battery discharged
Jump starting 297Battery, vehicle 231, 294
Charging 295
Disconnecting 295
Messages in display 270
Reconnecting 295
Reinstalling 295
Removing 295
Bi-Xenon headlamps* 327
Bi-Xenon type
Front lamp bulbs 283
Block heater 237
Bolts
For spare wheel 273
Brake assist system (BAS) 327
Brake fluid 225, 319
Brake lamp bulbs 281
Brake lamp, high mounted 281
Brake pads
Message in display 256
Brakes 216
Warning lamp 249
Break-in period 214
Bulbs, replacing 280
Additional turn signals 280
Brake lamps 281
Fog lamps 280Front lamps 280
High beam 280
High mounted brake lamp 281
License plate lamps 281, 286
Low beam 280
Parking lamps 280, 281, 283, 284
Rear fog lamp 281
Rear fog lamps 285
Side marker lamps 280, 285
Standing lamps 280, 281, 283, 284
Tail lamp assemblies 281, 285
Turn signal lamps 280, 281
Button
Audio system 162
C
CAC (Customer Assistance Center) 327
Calling up
Range (distance to empty) 126
Service indicator 239
CAN system 327
Capacities
Fuels, coolants, lubricants, etc. 317
Cargo compartment
Lighting 101
Casette mode
Playing cassettes 168