
328 Technical termsRemote Vehicle Diagnostics
Transmission of vehicle data and cur-
rent location to the Mercedes-Benz 
Customer Assistance Center for sub-
scribers to Tele Aid service.
REST
(Residual engine heat utilization)
Feature that uses the engine heat 
stored in the coolant to heat the vehi-
cle interior for a short time after the en-
gine has been turned off.
Restraint system
Seat belts, belt tensioner, airbags and 
child seat restraint systems. As inde-
pendent 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 
ANTI-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.
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
emand)
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.
Telematics*
A combination of the terms “telecom-
munications” and “informatics”.
Tightening torque
Force times lever arm (e.g. a lug 
wrench) with which threaded fasteners 
such as wheel bolts are tightened. 

332 IndexAlarm system
Anti-theft 79
Anticorrosion/antifreeze 320
Antiglare
Automatic 147
Antilock brake system (ABS) 325
Anti-theft alarm system
Arming 79
Canceling alarm 80
Disarming 80
Anti-theft systems 79
Anti-theft alarm system 79
Tow-away alarm 80
Aquaplaning see Hydroplaning 200
Armrest
Storage compartment below 177
Storage compartment in front of 177
Ashtrays 179
At the gas station 214
ATF (automatic transmission fluid) 220
AUDIO menu 116
Selecting radio station 117
Automatic antiglare for 
rear view mirror 147Automatic central locking
Activating/deactivating (control 
system) 128
Automatic climate control
Deactivating 157
Automatic headlamp mode 101
Automatic lighting control
Activating 104
Deactivating 105
Automatic locking when driving 89
Automatic transmission 135
Accelerator position 139
Emergency operation 
(Limp Home Mode) 140
Fluid level 220
Gear ranges 137
Gear selector lever position 138
Gear shifting malfunctions 140
Kickdown 139
Manual shifting 136
One-touch gearshifting 136
Selector lever position 135
Transmission fluid 220B
BabySmart
TM
Airbag deactivation system 65
Compatible child seats 65, 325
Self-test 66
BabySmart
TM airbag deactivation 
system 325
Backup lamp
Replacing bulbs 287
Backup lamps 280
Bulbs 280
BAS 71, 73, 325
Messages in display 248
Batteries, SmartKey
Changing 273
Check lamp 85
Checking 86
Batteries, vehicle 223
Battery box
Fuse box in 303
Battery discharged
Jump starting 297 

334 IndexCHECK ENGINE malfunction indicator 
lamp 243
Checking
Coolant level 215, 220
Oil level 215, 217, 218
Checklist
Off-road driving 205
Child safety 63
Infant and child restraint systems 54, 
60, 63
LATCH child seat mounts 68
Child safety switch see Blocking of rear 
door window operation 69
Cigarette lighter 181
Cleaning
Cup holder 235
Gear selector lever 235
Hard plastic trim items 236
Headlamps 148
Headliner 236
Illuminated door sill panels 236
Instrument cluster 235
Leather upholstery 236
Light alloy wheels 235
MB Tex upholstery 236
Plastic and rubber parts 236Rear Park Assist sensors* 234
Seat belts 236
Steering wheel 235
Windows 235
Windshield 47
Wiper blades 235
Climate control 150
Adjusting 153
Defogging windshield 153
Defrosting 154
Rear window defroster 155
Setting the temperature 152
Clock 25
Closing
Glove box 176
Hood 217
Side windows 158
Sliding/pop-up roof 160, 276
Sliding/pop-up roof 
with SmartKey 161
Tailgate 88
Windows 158
Windows with SmartKey 159
Closing sliding/pop-up roof
In an emergency 276
Cockpit 22, 325Cockpit management and data system 
(COMAND) 325
COMAND 325
COMAND see separate operating 
instructions
Combination switch 23, 103
High beam flasher 46, 103
Turn signals 46
Windshield wipers 47
Consumer information 322
Control and operation of 
radio transmitters 210
Control system 111, 325
AUDIO menu 116
Convenience submenu 128
Display digital speedometer 116
Functions 112, 115
Instrument cluster submenu 122
Lighting submenu 124
Malfunction memory menu 118
Menus 114, 115, 327
Multifunction display 111
Multifunction steering wheel 112
NAVI menu 118
Selecting radio system 117
Settings menu 119 

339 Index
Headlamps
Automatic control 101
Cleaning 234
Cleaning system 148, 222
Switching off 51
Switching on 46
Washer fluid 321
Washer system 321
Headliner
Cleaning 236
Heated seats 95
Heated steering wheel 194
Height adjustment
Head restraints 36
Seat belts 42
Steering wheel 37
High and low beam headlamps
Replacing bulbs 279
High beam flasher 46, 103
High beam headlamps
Messages in display 260
Switching on 103High beam lamp
Replacing bulbs 281
High mounted brake lamp 280
Hood 216
Closing 217
Messages in display 258
Opening 216
Hydroplaning 200
I
Identification labels 310
Certification label 310
Vehicle identification number 
(VIN) 310
Ignition 33
Switching on 44
Immobilizer 79
Activating 79
Deactivating 79
Infant and child restraint systems 63
Installing 67
LATCH child seat mounts 68
Information
Button for Tele Aid 188Inside rear view mirror
Adjusting 38
Antiglare 147
Installing
Cargo area cover 169
Infant and child restraint systems 67
Wiper blades 289
Instructions
Loading 173
Instrument cluster 24, 108, 326
Cleaning 235
Coolant temperature display 108
Illumination 108
Lamps in 243, 244
Multifunction display 111
Outside temperature indicator 110
Selecting language 123
Instrument lighting 108
Instruments and controls see Cockpit 22
Interior lighting 104
Activating automatic control 104
Deactivating automatic control 105
Delayed switch-off 126
Manual operation 105 

340 IndexInterior storage spaces 176
Cup holder 178
Cup holders 178, 179
Glove box 176
Parcel net in front passenger 
footwell 179
Storage compartment below 
armrest 177
Storage compartment in front of 
armrest 177
Interval wiping 48
Switching off 48
Switching on 48
J
Jack 268, 269
Jump starting 297
K
Key dependency memory
Settings 129
Key positions in starter switch 33
Key, mechanical 272
Key, SmartKey
Battery check lamp 85
Changing the batteries 273
Checking the batteries 86Factory setting 85
Global locking 85
Global unlocking 85
Loss of 86
Positions in starter switch 33
Remote controls 84
Restoring to factory setting 85
Selective setting 85
Starting the engine 44
Unlocking with 32
Keys 84
Kickdown 139, 326
Kilometers/miles in speedometer 122
Km/h or mph in speedometer 122
L
Labels, identification 310
Lamp bulbs, exterior 279
Lamps, exterior
Front 279
Light sensor 261
Messages in display 259, 261
Rear 280
Replacing bulbs for rear 286
Lamps, indicator and warning
ABS 240
Battery (SmartKey) 85Brakes 241, 242
CHECK ENGINE 243
Engine diagnostics 243
ESP 238, 239
Fuel reserve 243, 244
Instrument cluster 243, 244
Seat belts 243
Service indicator 230
SRS 55
Turn signals 25
Language
Multifunction display 123
Setting 123
LATCH child seat anchors 68
LATCH child seat mounts 68
Layout of poly-V-belt drive 311
Leather upholstery
Cleaning 236
License plate lamps
Messages in display 261
Replacing bulbs 280, 288
Light alloy wheels
Cleaning 235
Technical data 313
Light sensor 261
Lighter see Cigarette lighter 181 

342 IndexMenus 112
AUDIO 116
Control system 327
In control system 114, 115
Malfunction memory 118
NAVI 118
Settings menu 119
Standard display 116
Submenus 113
TEL 132
Trip computer 130
Middle tunnel
Fuse box in 305
Miles/kilometers in speedometer
Setting 122
Mirrors
Activating exterior rear view mirror 
parking position 148
Adjusting 38
Automatic antiglare for rear view mirror 
147
Exterior rear view mirror 38
Exterior rear view mirror parking posi-
tions 130
Inside rear view mirror 38Storing exterior rear view mirror park-
ing position 99
MON 215
MON (Motor Octane Number) 327
Monitoring reach
Rear Park Assist* 166
Mph or km/h in speedometer 122
Multicontour seat* 94
Multifunction display 111, 327
Selecting language 123
Standard display 115
Multifunction display messages
ABS 247
BAS 248
Battery 266
Brake fluid 250
Brake pads 250
Check engine 243
Coolant 251, 252
Display 267
Doors 254
Engine 243
Engine oil level 254
ESP 257
Fuel reserve tank 263
Hood 258Key 259
Lamps 259, 261
Parking brake 263
Tailgate 266
Tele Aid 266
Telephone* 258
Washer fluid 267
Multifunction steering wheel 26, 112
Buttons 112
N
Navigation system
Operating 118
See separate COMAND operating in-
structions
Night security illumination 102
Setting 125
O
Occupant safety 54
Airbags 55
Children in the vehicle 63
Fastening the seat belt 40
Infant and child restraint systems 63
LATCH child seat mounts 68
Seat belts 40, 58
Odometer, main 25 

345 Index
Rear bench seat
Foldable 169
Rear door window
Blocking operation 69
Rear fog lamp
Replacing bulbs 287
Switching on 103
Rear lamps see Tail lamps
Rear Park Assist* 165, 327
Cleaning sensors 234
Malfunction 167
Monitoring reach 166
Warning indicators 167
Rear seat head restraints 93
Installing 93
Removing 93
Rear towing eye 302
Rear view mirror automatic antiglare 147
Rear view mirrors see Mirrors
Rear window defroster 155
Activating 155
Deactivating 155
Rear window wiper/washer 48
Reconnecting
Vehicle battery 296Refrigerant
Air conditioning 317
Regular checks 215
Remote controls
SmartKey 84
Remote door unlock
With Tele Aid 190
Remote Vehicle Diagnostics 328
Removing
Cargo area cover 169
Wheel 293
Wiper blades 289
Replacing
Brake lamp bulbs 280
Bulbs 279
Front lamp bulbs 281
Rear lamp bulbs 280, 286
Wiper blades 289
Reset knob in the instrument cluster 119
Resetting
All functions (control system) 119
All functions of a submenu 120
Fuel consumption 131
Service indicator (FSS) 231
Trip odometer 109
Residual heat utilization 328REST (Residual engine heat utilization) 328
Restraint system 328
Restraint system see Infant and child 
restraint systems 63, 67
Restraint systems 54
Airbags 54
Child seat recognition 54
Child seats 54
Emergency Tensioning Device (ETD) 54
Lower anchors and tethers for children 
(LATCH) 54
Seat belts 54
Returning from off-road driving 209
Rims 313
Roadside assistance
Tele Aid 187
RON 215
RON (Research Octane Number) 328
Roof rack 168
Rotating wheels 226
Rubber parts
Cleaning 236
S
Safety
Occupant 54
Safety belts see Seat belts 40