Page 407 of 506
405 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
t
Function
unavailable
This display appears if button t or
s on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
Ê
Trunk open
This message will appear whenever the
trunk lid is open.
Close the trunk lid.
W
Washer fluid,
please refill
The fluid level has dropped to about
1/3
of total reservoir capacity.
Add washer fluid (
page 310).
Page 474 of 506

472 Technical termsCOMAND
(C
ockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and navi-
gation system, as well as 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.Distronic*
A driving convenience cruise control
system which helps the driver maintain
a pre-selected speed:
If there is no vehicle directly ahead,
the system operates in the same
way as conventional ->cruise con-
trol.
If a slower moving vehicle is ahead,
Distronic will reduce your vehicle
speed to the extent permitted by re-
duced throttle and up to 20% brak-
ing power to maintain the preset
minimum following distance.
DTR
(->Distronic*)
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.
->SRS
Page 478 of 506
476 Technical termsTire speed rating
Part of a 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.
Vehicle level control
The ground clearance of the vehicle is
automatically controlled according to a
selected setting and speed.The driver
can set the ground clearance manually
for example on very rough roads.
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.).
Page 485 of 506

483 Index
Delayed switch-off
Interior lighting 165
Department of Transportation see DOT
Dialing
A number (telephone) 172
Diesel fuel 300
Difficulties
While driving see Problems while
driving 53
With starting 48
Digital speedometer 150
Direction of rotation (tires) 314
Discharged battery
Jump starting 436
Disconnecting
Vehicle battery 434
Display
Selecting 158, 159Displays
Digital speedometer 150
Distronic* 237
Maintenance service indicator 343
Messages 305
Selecting 158
Showing malfunctions 153
Distance
Decreasing in Distronic* 243
Increasing in Distronic* 243
Warning function 243
Distance to empty (range)
Calling up 170
Distance warning function* 243
Activating 244
Deactivating 244
DTR* warning lamp 243
Intermittent warning sound 243
Symbol in multifunction display 152Distronic* 235, 472
Activated 239
Activating 240
Calling up settings 152, 238
Cleaning system sensor 351
Cruise control lever 239
Deactivated 239
Deactivating 242
Deceleration 238
Decreasing distance 243
Displays in the speedometer dial 237
Distance warning function 243
Driving hints 244
Increasing distance 243
Intermittent signal tone 237
Menu 238
Messages in display 370
Sensor cover 351
Setting a higher speed 240
Setting a slower speed 241
Setting the current speed 240
Setting the following distance in
Distronic 242
Warning and indicator lamps 237
Door control panel 30
Door entry lamps 140
Page 487 of 506

485 Index
Emergency operations
Opening/closing sliding/pop-up roof*
or panorama sliding/pop-up
roof* 414
Releasing trunk lid from inside 117
Remote door unlock 278
Unlocking the trunk lid 411
Unlocking the vehicle 410
Emergency tensioning device see
ETD 70, 472
Emission control 297
Ending
A call (telephone) 172
Engine 450
Compartment 303
Message in the display 359, 360,
383
Starting 46
Starting with KEYLESS-GO* 47
Starting with the SmartKey 46, 47
Turning off with the key 56
Engine compartment
Hood 303
Engine malfunction indicator lamp 359,
360, 383
Engine number 472Engine oil
Adding 306
Checking level 304
Consumption 304
Display messages 387
Messages in display 305
Viscosity 472
ESP 87, 472
Four wheel electronic traction system
with ESP 93
Switching off 89
Switching on 90
Synchronizing 372
Warning lamp 357
ETD 472
Safety guidelines 64
Exterior lamp switch 133
Exterior rear view mirrors
Adjusting 41
Parking position for 168F
Fahrenheit
Setting temperature units 157
Fastening the seat belts 43
Fine adjustment
Cruise control 234
First aid kit 407
Flat tire 425
Collapsible tire 429
Mounting the spare wheel 425, 428
Spare wheel 425
Flexible Service System (Canada
vehicles) 343
Flexible Service System (FSS) 473
Fog lamp, rear 137
Fog lamps, front
Messages in display 392
Switching on 136
Following distance in Distronic* 242
Four wheel electronic traction system
(4MATIC) with ESP 93
4MATIC 93
Page 493 of 506

491 Index
Multifunction display messages
ABS 369
Batteries 370, 378, 379
Brake fluid 382
Brake pads 380
Check engine 359, 360
Coolant 384, 385
Coolant level 383
Distronic* 370
Doors 386
Easy-entry/exit feature 381
Fuel reserve tank 389
Hood 389
Lamps 394
Parking brake 381
SBC brake system 380, 381
SmartKey 390
SmartKey with KEYLESS-GO* 391
Tele Aid 403, 404
Telephone* 405
Tires 399
Trunk 405
Washer fluid 405
Multifunction steering wheel 26, 146,
474
Buttons 146N
Navigation system
See separate COMAND operating
instructions 152
Night security illumination 136
Normal occupant weight 338
O
Occupant Classification System 74
Self-test 79
Occupant distribution 338
Occupant safety 60
Airbags 61
Children and airbags 62
Children in the vehicle 71
Fastening the seat belt 43
Infant and child restraint systems 71
LATCH child seat anchors 81
Seat belts 43, 64
Oil
Adding 306
Checking level 305
Consumption 304
Filler neck 306
Viscosity 472Oil level
Checking 305
One-touch gearshifting 176
Canceling gear range limit 176
Downshifting 176
Upshifting 176
Opening 414
Ashtray 268
Doors from the inside 109
Fuel filler flap 299
Fuel filler flap manually 412
Glove box 262
Panorama sliding/pop-up roof 227
Panorama sliding/pop-up roof* in an
emergency 414
Roller sunblinds 226
Side windows 219
Sliding/pop-up roof* 223
Sliding/pop-up roof* in an
emergency 414
Trunk 110
Trunk from the inside 110
Trunk lid with SmartKey 101
Windows 218
Opening the trunk from the outside 110
Page 494 of 506

492 IndexOperating
CD player 151
Radio 150
Safety 16
Telephone* 171
Vehicle outside the USA and
Canada 13
Operating safety 16
Operation
Garage door opener 284
Integrated remote control 284
Operator’s Manual 10
Ornamental moldings 350
Outside temperature indicator 144
Overdue maintenance service 343
Overhead control panel 29
Garage door opener 279
Overspeed range 474
P
Paintwork 349
Panic alarm 84
Panic button on SmartKey 84
Panorama sliding/pop-up roof* 226
Parcel net in front passenger
footwell 262
Parking 55Parking brake 48, 55
Engaging 55
Message in display 381
Releasing 48
Parking lamps 418
Switching on 133
Parking position
Exterior rear view mirrors 132, 168,
187
Parktronic system* 474
Warning sounds 253
Parktronic*
Malfunctioning 253
Sensor 351
Parts service 446
PASS AIR BAG OFF indicator lamp 365
Passenger compartment
Fuse box 443
Interior lighting 139
Interior rear view mirror 41
Passenger safety see Occupant
safety 60
Pedals 287
Phone book*
Loading 172
Quick search 173Phone number*
Dialing 172
Redialing 173
Plastic and rubber parts
Cleaning 354
Pliers, universal (vehicle tool kit) 409
Poly-V-belt drive 474
Positions (Memory function)
Recalling from memory 131
Positions (Memory function*)
Storing into memory 131
Potential problems associated with under-
inflated and overinflated tires 326
Power assistance 288
Power seat
Adjusting backrest tilt 38
Adjusting head restraint height 39
Adjusting head restraint tilt 39
Adjusting seat cushion tilt 38
Adjusting seat height 38
Memory function 130
Removing/installing head
restraints 123
Seat fore and aft adjustment 38
Power train 474
Power washer 349
Page 495 of 506

493 Index
Power windows 218
Blocking of rear window operation 83
Convenience closing feature 221
Side windows 218
Summer opening feature 220
Synchronizing 220
Practical hints
First aid kit 407
Jump starting 436
Lamp in center console 365
Lamps in instrument cluster 356
Messages in the display 367
Spare wheel 407
Vehicle tool kit 409
Problems
While driving 53
With vehicle 17
Product information 9
Production options weight 338
Program mode selector switch 474
Automatic transmission 179
PSI 338PTC heating element 475
PULSE function (Massage function) 127
Q
Quick search
Phone book* 173
R
Radio
Selecting stations 150
Selecting stations (satellite*) 151
Radio transmitters, control and
operation 295
Range (distance to empty)
Calling up 171
Rear bench seat
Foldable 257
Rear fog lamp
Switching on 137
Rear lamp bulbs 418
Rear lamps see Tail lamps
Rear passenger compartment
Adjustable air vents 216Rear seat head restraints
Installing 125
Removing 125
Rear view mirrors auto-dimming 186
Rear view mirrors see Mirrors 186
Rear window
Blocking operation 83
Rear window defroster 191
Activating 191
Deactivating 191
Rear window sunshade* 189, 190
Recommended inflation pressure 338
Reconnecting
Vehicle battery 435
Regular checks 301
Reinstalling the battery 435
Remote controls
Integrated 281
SmartKey 98, 102
SmartKey with KEYLESS-GO* 102