
285 Malfunction and indicator lamps
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index Supplemental restraint system (SRS) indicator lamp
When turning the electronic key in starter 
switch to position 1 the indicator lamp “SRS” 
in the instrument cluster comes on. If no 
fault is detected, the lamp will go out after 
approximately 4 seconds.
When turning the electronic key in starter switch to 
position 2 the indicator lamp “SRS” in the instrument 
cluster comes on. If no fault is detected, the lamp will go 
out when the engine is running.
The operational readiness of the airbag system is 
verified by the indicator lamp “SRS” in the instrument 
cluster when turning the electronic key in starter switch 
to position 1 or 2.
After the lamp goes out, the system continues to 
monitor the components and circuitry of the airbag 
system and will indicate a malfunction by coming on 
again.See page 72 for notes on airbags, see page 70 for belt 
tensioners and page 62 for infant and child seat 
restraint.
Wa r n i n g !
In the event a malfunction of the “SRS” is indicated 
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. 

289 Malfunction and indicator lamps
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index Malfunction and indicator lamp in the center 
console
AIRBAG OFF indicator lamp
The ü indicator lamp will light up for approximately 
6 seconds when you turn the electronic key in starter 
switch to position 1 or 2.
It does not light up if there is a fault in the system.
The ü indicator lamp stays lit as long as a 
Baby Smart
TM child seat is properly installed on the 
front passenger seat. It indicates that the front 
passenger airbag is switched off.
See page 69 for BabySmart
TM airbag and its deactivation 
system.
Baby Smart
TM is a trademark of Siemens Automotive Corp.
Wa r n i n g !
The BabySmart
TM airbag deactivation system will 
ONLY work with a special child seat designed to 
operate with it. It will not work with child seats 
which are not BabySmart
TM compatible.
Never place anything between seat cushion and 
child seat (e.g. pillow), since it reduces the 
effectiveness of the deactivation system.Follow the manufacturer’s instructions for 
installation of special child seats.The passenger front airbag will not deploy only if 
the ü indicator lamp remains illuminated.Please be sure to check the indicator every time 
you use the special system child seat. Should the 
light go out while the restraint is installed, please 
check installation. If the light remains out, do not 
use the BabySmart
TM restraint to transport children 
on the front passenger seat until the system has 
been repaired. 

386 Index
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car careIndex
BBabySmart
TM airbag deactivation system.....................  69
Battery ............................................................................. 336
Block heater .................................................................... 266
Brake assist system (BAS) ............................................  271
Bulbs
See Replacing bulbs ................................................. 345
CCD changer installed .....................................................  187
Cellular telephone .........................................................  219
Center console ..................................................................  24
Central locking switch ....................................................  38
Central locking system ...................................................  31
Automatic central locking .........................................  40
Central locking switch ...............................................  38
Choosing global or selective mode...........................  33
Doors .............................................................................  36
General notes...............................................................  30
Locking and unlocking with remote control ..........  33
Mechanical keys ..........................................................  35
Obtaining replacement keys .....................................  29
Summer opening/convenience feature ...................  34Vehicle keys ................................................................. 28
Changing wheels...........................................................  327
Inflating the collapsible spare tire ........................  333
Storing spare wheel in wheel well ........................  334
Check regularly and before a long trip......................  280
Child seat
See Infant and child restraint systems .................... 82
Climate control ...............................................................  152
Adjustable air outlets, rear passenger 
compartment ......................................................... 172
Air recirculation ........................................................  158
Basic setting...............................................................  156
Defrosting ................................................................... 157
Display and controls .................................................  154
Dust filter....................................................................  155
Economy mode ..........................................................  159
Front center console storage compartment 
ventilation .............................................................  171
Residual engine heat utilization ............................. 159
Special settings .........................................................  156
Windows fogged up on the inside ..........................  157
Windows fogged up on the outside ................  157, 166
COMAND, radio and telephone...................................  226
Combination switch ....................................................... 148
Control and operation of radio transmitters .............  226
Coolant level ...................................................................  319 

388 Index
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car careIndex
Front airbags ....................................................................  72
Front center console storage compartment 
ventilation ..................................................................  171
Front seat adjustment  ..................................................... 48
Front seat backrest - locking and unlocking ...............  56
Fuel filler flap, manual release ................................... 354
Fuel reserve warning .................................................... 286
Fuse box ..........................................................................  311
Fuses ................................................................................  311
GGarage door opener .......................................................  221
Global locking
See Central locking system .......................................  31
Glove box ......................................................................... 207HHazard warning flasher switch ...................................  151
Head restraint height ......................................................  61
Head restraints
Rear seat .......................................................................  60
Head restraints, front seats
Removal and installation ...........................................  54Headlamp cleaning system........................................... 147
Headlamp mode (HEADLAMPS) .................................. 144
Heated seats ...................................................................... 58
High beams
See Combination switch........................................... 148
IIdentification labels ......................................................  369
Indicator lamps in the instrument cluster ..........  98, 282
Individual settings .........................................................  121
"CONVENIENCE" 
(vehicles with memory function) ...................... 134
"INSTRUMENT CLUSTER"....................................... 124
"LIGHTING"................................................................ 128
"VEHICLE" (audio and central locking system) ... 132
Infant and child restraint systems ................................ 82
Child seat mounts - LATCH type............................... 85
Installation ................................................................... 84
Inflating the collapsible spare tire .............................  333
Information call
See Tele Aid...............................................................  228
Instrument cluster ........................................................... 96
Indicator lamps............................................................ 98
Instruments and controls ...............................................  18 

391 Index
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car careIndex Unfastening ..................................................................  66
Warning lamp ............................................................ 288
Seat belts and integrated restraint system ..................  62
Seats
Front seat adjustment ................................................  48
Heated seat ..................................................................  58
Manual seat .................................................................  51
Memory ........................................................................  93
Selective locking
See Central locking system .......................................  31
Self-test BabySmart
TM without special child seat 
installed ........................................................................  69
Setting the audio volume..............................................  136
Side impact airbags .........................................................  75
Side marker lamp........................................................... 350
Sliding/pop-up roof
Opening and closing...................................................  34
Synchronizing ........................................................... 202
SOS-call
See Tele Aid ............................................................... 228
Spare wheel, storage compartment.............................  321
Split folding rear seat bench ........................................  215
Standby bulb function ................................................... 350
Start lock-out.....................................................................  30
Starter switch ................................................................. 240
Starting and turning off the engine ............................ 242Steering lock
See starter switch .....................................................  240
Steering wheel
Easy-entry/exit feature .............................................. 47
STEERING WHEEL ADJUST. - 
malfunction and warning messages .....................  308
Steering wheel adjustment
electrical ....................................................................... 88
manual .......................................................................... 87
Storage compartments and armrests .......................... 206
Storing mirror positions.................................................. 90
Storing seat positions ...................................................... 50
Stowing things in the vehicle.......................................  311
Sun visors.......................................................................  205
Sunshade for panorama sliding/pop-up roof.............  199
Supplemental Restraint System (SRS) .......................... 70
TTechnical data ................................................................  373
Electrical system .......................................................  376
Main Dimensions ......................................................  376
Rims – Tires ...............................................................  374
Weights .......................................................................  376
Tele Aid ...........................................................................  228