2004 MERCEDES-BENZ C320 anti-theft

82 Controls in detailLocking and unlocking
In the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. If you are already familiar with the
basic functions of your vehicle, this section
will be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the
“Getting started” section of this manual.
The corresponding page numbers are giv-
en at the beginning of each segment.
Locking and unlocking
SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and
a removable mechanical key. The locking
tabs for the mechanical key portion of the
two SmartKeys are a different color to help
distinguish each SmartKey unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.
The SmartKey centrally locks and unlocks:

the doors


the trunk


the fuel filler flap
SmartKey with remote control1‹ Lock button
2Š Opening button for the trunk lid
3Mechanical key locking tab
4ΠUnlock button
5Battery check lamp
6Â Panic button* (
page 71).
iYou can also open and close the power
windows (
page 202) and
sliding/pop-up roof* (
page 204)
from outside using the SmartKey.
iCanada only:
Only vehicles equipped with an
anti-theft alarm system* have
SmartKeys with integrated panic
button*6.

86 Controls in detailLocking and unlocking
Opening the trunk
Opening the trunk from the outside
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The handle is located above the rear
license plate recess.
1Handle
Pull on handle1.
The trunk opens.The trunk can also be opened using the
SmartKey, see “Unlocking and opening the
trunk lid” (
page 84) or from its inside in
an emergency, see “Trunk lid emergency
release” (
page 88).
iIf the vehicle has previously been
locked from the outside with the
SmartKey, opening a door from the
inside will trigger the anti-theft alarm
system*.
To cancel the alarm, do one of the
following:

Press buttonŒ or‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.
!The trunk lid swings open upwards
automatically. Always make sure there
is sufficient overhead clearance.iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 89).
The vehicle must be unlocked.

224 Controls in detailUseful featuresSystem self-check
Initially, after turning the SmartKey in
starter switch to position2, malfunctions
are detected and indicated (the indicator
lamps in the SOS button, the Roadside
Assistance button• and the Informa-
tion button¡ stay on longer than ten
seconds or do not come on). The message TELE AID MALFUNCTION – DRIVE TO
WORKSHOP!
appears for approximately ten
seconds in the multifunction display.Emergency calls
An emergency call is initiated
automatically


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
system (
page 78) and tow-away
alarm (
page 79).
An emergency call can also be initiated
manually by opening the cover next to the
interior rear view mirror labeled “SOS”,
then briefly pressing the button located
under the cover. See (
page 226) for
instructions on initiating an emergency call
manually.
Once the emergency call is in progress, the
indicator lamp in the SOS button will begin
to flash. The message EMERGENCY CALL –
CONNECTING CALL
appears in the multifunc-
tion display. When the connection is estab-
lished, the message
iThe Tele Aid system utilizes the cellular
network for communication and the
GPS (Global Positioning System) satel-
lites for vehicle location. If either of
these signals are unavailable, the
Tele Aid system may not function and if
this occurs, assistance must be sum-
moned by other means.
Warning!
G
If the indicator lamps in the SOS button, in
the Roadside Assistance button and/or in
the Information button remain illuminated
constantly in red and/or the message TELE AID MALFUNCTION – DRIVE TO
WORKSHOP!
is displayed in the multifunction
display after the system self-check, a mal-
function in the system has been detected.
If a malfunction is indicated as outlined
above, the system may not operate as
expected. Have the system checked at the
nearest Mercedes-Benz Center as soon as
possible.

305 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey, open the driver’s door and
the trunk using the mechanical key.
The passenger door cannot be unlocked
manually.
1Mechanical key locking tab
2Mechanical key

Move locking tab1 in direction of
arrow and slide mechanical key2 out
of the housing.Unlocking the driver’s door
1Unlocked
2Locked

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 left1.
iUnlocking your vehicle with the
mechanical key will trigger the
anti-theft alarm system.
To cancel the alarm, do one of the
following:

Press buttonŒ or‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.

367 Index
A
ABS 23, 72, 361
ABS control 72
Malfunction indicator lamp 274
Messages in display 284
Accelerator position,
automatic transmission* 147
Accident
In case of 49
Activating
Air conditioning (cooling)
Automatic climate control* 170
Climate control 160
Air recirculation mode
Automatic climate control* 167
Climate control 158
Anti-theft alarm system* 78
Automatic climate control* 163
Central locking (control system) 133
Charcoal filter 169
Climate control 155Climate control system 159
Defrosting
Automatic climate control* 167
Climate control 158
Easy-entry/exit feature* 134
ESP 76
Exterior headlamps 46
Exterior lamps 103
Exterior rear view mirror
parking position* 150
Hazard warning flasher 106
Headlamps 46
High beams 106
Ignition 31
Immobilizer 52
Rapid seat heating* 98
Rear fog lamp 104, 105
Rear window defroster 153
Residual heat 171
Seat heating* 98
Tow-away alarm* 80
Windshield wipers 48Adding
Coolant 257
Engine oil 255
Additional turn signals 310
Adjustable air vents,
rear passenger compartment
Automatic climate control* 172
Climate control 161
Adjusting 32
Air distribution
Automatic climate control* 166
Climate control 157
Air volume
Automatic climate control* 166
Climate control 157
Backrest contour 97
Backrest side bolsters 97
Backrest tilt
Manual seat 33
Power seat* 35
Exterior rear view mirrors 38

369 Index
Air vents, rear passenger compartment
Adjustable
Automatic climate control* 172
Climate control 161
Air volume
Adjusting
Automatic climate control* 166
Climate control 157
Airbags 55
BabySmart
TM deactivation
system 66, 361
Children 56
Front 59
Passenger 59
Safety guidelines 58
Side impact 60
Window curtain 60
Alarm
Audible 71, 78
Canceling 79
Visual 78Alarm system
Anti-theft* 78
Tow-away* 79
Alignment bolt (vehicle tool kit) 319, 361
Anticorrosion/antifreeze 357
Antiglare
Automatic* 149
Manual 149
Antilock Brake System see ABS
Anti-theft alarm system*
Arming 78
Canceling alarm 79
Disarming 79
Anti-theft systems 78
Anti-theft alarm system* 78
Immobilizer 78
Tow-away alarm* 79
Aquaplaning see Hydroplaning
Armrest
Storage compartment in front of 218
Storage spaces 219
Ashtrays 220ATF 256
AUDIO menu 118
Selecting radio station 119
Selecting satellite radio* station 119
Audio system 173
Audio and telephone, operation 173
Button and soft key operation 176
Cassette operation 186
CD* operation 189
Operating and display elements 174
Operating safety 173
Operation 176
Radio operation 179
Switching off 176
Switching on 176
Telephone* operation 193
Automatic antiglare* for rear view
mirror 149
Automatic central locking
Activating/deactivating
(control system) 133

374 IndexCoolant 257, 356
Adding 257
Anticorrosion/antifreeze
quantity 356
Capacities 350
Checking level 257
Messages in display 287–289
Temperature 248
Temperature display 110
Coolant level
Checking 257
Cruise control 206, 362
Canceling 207
Driving downhill 207
Driving uphill 207
Fine adjustment 208
Message in display 290
Setting current speed 207
Setting speeds 208
Cruise control lever 206
Cruising range, fuel 355Cup holder
Cleaning 271
In front of seat armrest 217
In rear seat armrest 218
Customer Assistance Center see CAC
D
Daytime running lamp mode 104
Setting 129
Deactivating
Air conditioning (cooling)
Automatic climate control* 170
Climate control 160
Air recirculation mode
Automatic climate control* 168
Climate control 159
Alarm 79
Anti-theft alarm system* 79
Automatic climate control* 163
Central locking (control system) 133
Climate control 155
Climate control system 159Cruise control 207
Defrosting
Automatic climate control* 167
Climate control 158
Engine with the SmartKey 52
ESP 75
Exterior lamps 103
Exterior lamps delayed shut-off 131
Front fog lamps 131
Hazard warning flasher 106
Headlamps 51
Interior lighting delayed shut-off 132
Rapid seat heating* 98
Rear window defroster 153
Seat heating* 98
Tow-away alarm* 80
Deep water see Standing water
Defogging
Windshield
Automatic climate control* 166
Climate control 157