lights MERCEDES-BENZ METRIS 2020 MY20 Operator’s Manual

Index
....................................................... 4Introduction .........................................
27
Operating Instructions ........................... 27
Service and vehicle operation ................ 27
Proper use ............................................. 29
Protection of the environment ............... 29
Operating safety and vehicle
approval ................................................. 30
Genuine Mercedes-Benz parts ............... 34
QR code for rescue card ........................ 35
Data stored in the vehicle ...................... 35 At a glance
........................................... 37
Cockpit ..................................................
37
Instrument cluster (vehicles without
steering wheel buttons) ......................... 38
Instrument cluster (vehicles with
steering wheel buttons) ......................... 40
Steering wheel buttons .......................... 42
Center console ...................................... 43
Overhead control panel ......................... 44
Door control panel ................................. 44 Safety ...................................................
46
Useful information .................................
46
Occupant safety .................................... 46
Children in the vehicle ........................... 60
Pets in the vehicle ................................. 66
Driving safety systems ........................... 66
Theft deterrent locking system .............. 70 Opening and closing
...........................71
Useful information .................................
71
Key ........................................................ 71
Central locking ...................................... 75
Driver's door and co-driver's door ......... 76
Sliding door ........................................... 77
Electric sliding door ............................... 78
Tailgate .................................................. 81
Rear-end doors ...................................... 82
Side windows ......................................... 84 Seats, steering wheel and mir-
rors .......................................................
87
Useful information .................................

87
Seats ..................................................... 87
Steering wheel ....................................... 95
Mirrors ................................................... 96
Memory function ................................... 97 Lights and windshield wipers
............99
Useful information .................................
99
Exterior lighting ..................................... 99
Interior lighting .................................... 102
Replacing bulbs: interior lighting and
ambient lamps ..................................... 103
Replacing bulbs ................................... 105
Windshield wipers ................................ 109 Climate control
................................. 114
Useful information ...............................
114
Overview of climate control systems ... 114
Operating the climate control sys-
tem ...................................................... 117
Adjusting the air vents ......................... 124 Driving and parking ..........................
126
Useful information ...............................
126
Breaking-in notes ................................. 126
Driving ................................................. 126
Automatic transmission ....................... 130
Refueling ............................................. 136
Parking ................................................ 138
Driving tips .......................................... 140
Driving systems ................................... 146
Towing a trailer .................................... 168 On-board computer and displays
....174
Useful information ...............................
174
Important safety notes ........................ 174
Display and operation .......................... 174
On-board computer (vehicles without
steering wheel buttons) ....................... 176
On-board computer (vehicles with
steering wheel buttons) ....................... 181
Display messages (vehicles without
steering wheel buttons) ....................... 194 2
Contents

Function/notes ............................. 155
Attention Assist
see ATTENTION ASSIST
ATTENTION ASSIST
see ATTENTION ASSIST
Authorized workshop
see Qualified specialist workshop
AUTO lamp
Display messages (vehicle with-
out steering wheel buttons) ...........
202
AUTO lights
Display messages (vehicle with
steering wheel buttons) ................. 216
see Lights
Automatic car wash (care) ............... 264
Automatic headlamp mode .............. 100
Automatic locking ............................... 76
Automatic transmission
Accelerator pedal position ............. 134
Changing gear ............................... 132
DIRECT SELECT lever ..................... 131
Display message ............................ 225
Drive program display .................... 132
Driving tips .................................... 134
Emergency running mode .............. 136
Engaging drive position .................. 131
Engaging neutral ............................ 131
Engaging reverse gear ................... 131
Engaging the park position ............ 131
Gearshift recommendation ............ 136
Important safety notes .................. 130
Kickdown ....................................... 135
Manual shifting .............................. 135
Overview ........................................ 130
Problem (malfunction) ................... 136
Program selector button ................ 134
Rocking the vehicle free ................ 135
Shift ranges ................................... 133
Starting the engine ........................ 128
Steering wheel paddle shifters ...... 135
Trailer towing ................................. 135
Transmission oil change ................ 310
Transmission position display
(DIRECT SELECT lever) ................... 132
Transmission positions .................. 132
Automatic transmission emer-
gency mode ....................................... 136 Axle load, permissible (trailer
towing) ...............................................
315 B
Back support see Lumbar support
Backup lamp
Display messages (vehicle with
steering wheel buttons) .................

217
Backup lamps
Display messages (vehicle with-
out steering wheel buttons) ........... 203
Replacing bulbs ............................. 108
BAS (Brake Assist System)
Function/notes ................................ 67
Basic settings
see Settings
Battery (SmartKey)
Checking .......................................... 73
Important safety notes .................... 73
Replacing ......................................... 73
Battery (vehicle)
Care ............................................... 263
Charging ........................................ 262
Connecting and installing .............. 261
Disconnecting and removing ......... 260
Display messages (vehicle with
steering wheel buttons) ................. 219
Display messages (vehicle with-
out steering wheel buttons) ........... 204
Important safety notes .................. 258
Jump starting ................................. 272
Location ......................................... 259
Before driving off
Important safety notes .................. 127
Belt
see Seat belts
Belt warning ......................................... 50
Blind Spot Assist
Activating ....................................... 153
Activating/deactivating (vehicle
with steering wheel buttons) ......... 191
Collision warning ........................... 153
Display message ............................ 223
Important safety notes .................. 152
Monitoring range of the sensors .... 152
Notes/function .............................. 151 Index
5

Trailer towing ................................. 153
Warning display
............................. 153
Blower
see Climate control
Bluetooth ®
Audio ............................... 187
Brake
Display message (vehicle without
steering wheel buttons) ................. 196
Downhill slopes .............................. 142
Heavy and light loads ..................... 142
New brake discs ............................ 143
Wet road surfaces .......................... 142
Brake Assist
see BAS (Brake Assist System)
Brake assistance
see BAS (Brake Assist System)
Brake fluid
Checking the level ......................... 255
Display message (vehicle with
steering wheel buttons) ................. 213
Display message (vehicle without
steering wheel buttons) ................. 199
Notes ............................................. 310
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Display messages (vehicle with
steering wheel buttons) ................. 217
Display messages (vehicle with-
out steering wheel buttons) ........... 202
Replacing bulbs ............................. 108
Trailer display messages (vehicle
with steering wheel buttons) ......... 216
Trailer display messages (vehicle
without steering wheel buttons) .... 202
Brake pads/linings
New ............................................... 143
Brakes
ABS .................................................. 67
Adaptive Brake Assist .................... 150
Applying the parking brake ............ 138
BAS .................................................. 67
Brake fluid (notes) ......................... 310
Checking brake fluid level .............. 255
Display message (vehicle with
steering wheel buttons) ................. 210
EBD .................................................. 68 Hill start assist ............................... 129
Important safety notes
.................. 142
New brake pads/linings ................ 143
Parking brake (notes) ..................... 143
Riding tips ...................................... 142
Warning lamp ................................. 229
Breakdown
Mercedes-Benz Service24h ........... 272
Vehicle tool kit ............................... 270
Breakdown assistance
see Towing away
Buttons
On the instrument cluster .............. 176
On the steering wheel .................... 181 C
California Important notice for retail cus-
tomers and lessees ..........................

27
Camera
see Rear view camera
Car wash
see Care
Care
Car wash ........................................ 264
Carpets .......................................... 269
Display ........................................... 268
Exterior lights ................................ 266
Interior ........................................... 268
Notes ............................................. 263
Paint .............................................. 265
Plastic trim .................................... 268
Power washer ................................ 265
Rear view camera .......................... 267
Roof lining ...................................... 269
Seat belt ........................................ 269
Seat cover ..................................... 269
Sensors ......................................... 267
Sliding door ................................... 267
Steering wheel ............................... 269
Trim pieces .................................... 269
Washing by hand ........................... 264
Washing the engine ....................... 265
Wheels ........................................... 266
Windows ........................................ 265
Wiper blades .................................. 266 6
Index

Display messages (vehicle with
steering wheel buttons) .................
223
Display messages (vehicle with-
out steering wheel buttons) ........... 206
Displaying the speed ..................... 147
Driving system ............................... 146
Function/notes ............................. 146
Important safety notes .................. 147
Problem (malfunction) ................... 149
Resuming the stored speed ........... 148
Setting a speed .............................. 148
Storing and maintaining current
speed ............................................. 148
Cup holder ......................................... 240
Important safety notes .................. 239
Customer Assistance Center
(CAC) ..................................................... 32
Customer Relations Department ....... 32D
Dashboard see Cockpit
Dashboard lighting
see Instrument cluster lighting
Data
see Technical data
Data collection
Processing and forwarding

.............. 35
Date
Setting (vehicle with steering
wheel buttons) ............................... 192
Setting (vehicle without steering
wheel buttons) ............................... 181
Daytime running lamps
Changing bulbs .............................. 107
Display messages (vehicle with
steering wheel buttons) ................. 218
Display messages (vehicle with-
out steering wheel buttons) ........... 203
Switching on/off (switch) .............. 100
Dealership
see Qualified specialist workshop
Declarations of conformity ................. 31
Delayed switch-off
Exterior lighting (on-board com-
puter) ............................................. 193
Interior lighting .............................. 193 Diagnostics connection
Operating safety and vehicle
approval

........................................... 31
Digital speedometer
Displaying (vehicle with steering
wheel buttons) ............................... 185
Displaying (vehicle without steer-
ing wheel buttons) ......................... 178
Dimensions ........................................ 313
DIRECT SELECT lever
Automatic transmission ................. 131
Display
Function/notes (vehicle with
steering wheel buttons) ................. 183
Function/notes (vehicle without
steering wheel buttons) ................. 176
Permanent display (vehicle with
steering wheel buttons) ................. 192
Permanent display (vehicle with-
out steering wheel buttons) ........... 180
see Warning and indicator lamps
Display message (vehicle with
steering wheel buttons)
Safety systems .............................. 210
Service interval display .................. 257
Display message (vehicle without
steering wheel buttons)
Safety systems .............................. 196
Service interval display .................. 257
Display messages (vehicle with
steering wheel buttons)
Calling up ....................................... 209
Driving systems ............................. 221
Engine ............................................ 219
Hiding ............................................ 209
Important safety notes .................. 209
Introduction ................................... 209
Key ................................................ 227
Lights ............................................. 216
Setting the language ...................... 192
Tires ............................................... 224
Vehicle ........................................... 225
Display messages (vehicle with-
out steering wheel buttons)
Calling up ....................................... 195
Driving systems ............................. 206
Engine ............................................ 204
Hiding ............................................ 194 Index
9

Activating/deactivating (vehicle
without steering wheel buttons)
.... 179
Crosswind Assist ............................. 70
Deactivating/activating ................... 69
Display message (vehicle with
steering wheel buttons) ................. 214
Display message (vehicle without
steering wheel buttons) ................. 200
Function/notes ................................ 68
Important safety information ........... 68
Trailer stabilization ........................... 69
Warning lamp ................................. 230
Exhaust check ................................... 141
Exterior lighting
see Lights
Exterior mirror
Heating ............................................ 97
Exterior mirrors
Adjusting ......................................... 97
Out of position (troubleshooting) ..... 97
Eyeglasses compartment ................. 238 F
First-aid kit .........................................

272
Flat tire
Changing a wheel/mounting the
spare wheel ................................... 298
Frequencies
Mobile phone ................................. 304
Two-way radio ................................ 304
Front fog lamps
Changing bulbs .............................. 105
Display messages (vehicle with
steering wheel buttons) ................. 217
Display messages (vehicle with-
out steering wheel buttons) ........... 203
Switching on/off ........................... 100
Front-passenger front air bag
Display message (vehicle without
steering-wheel buttons) ................. 197
Fuel
Additives (gasoline) ........................ 307
Consumption information .............. 307
Consumption statistics (vehicle
with steering wheel buttons) ......... 184
Consumption statistics (vehicle
without steering wheel buttons) .... 177 Displaying the current consump-
tion (vehicle with steering wheel
buttons) .........................................

184
Displaying the current consump-
tion (vehicle without steering
wheel buttons) ............................... 178
Displaying the range (vehicle
with steering wheel buttons) ......... 184
Displaying the range (vehicle
without steering wheel buttons) .... 178
Driving abroad ............................... 141
Driving tips .................................... 140
Fuel content display (vehicle
without steering wheel buttons) .... 176
Fuel gauge (vehicle with steering
wheel buttons) ................................. 40
Grade (gasoline) ............................ 306
Important safety notes .................. 306
Problem (malfunction) ................... 138
Refueling ........................................ 136
Tank content/reserve fuel ............. 306
Fuel content
Display (vehicle without steering
wheel buttons) ............................... 176
Fuel level
Gauge (vehicle with steering
wheel buttons) ................................. 40
Fuel tank
Problem (malfunction) ................... 138
Fuel tank reserve level
Display messages (vehicle with
steering wheel buttons) ................. 221
Display messages (vehicle with-
out steering wheel buttons) ........... 206
Fuses .................................................. 277 G
Gasoline .............................................

306
Gearshift recommendation
Display (vehicle with steering
wheel buttons) ............................... 183
Display (vehicle without steering
wheel buttons) ............................... 176
Genuine parts ...................................... 34
Glove box ........................................... 238
GTW (Gross Trailer Weight) (defi-
nition) ................................................. 29612
Index

Jacking points ................................ 298
Scope of tire-changing tools
.......... 270
Storage location ............................ 270
Stowage compartment in the
rear ................................................ 271
Stowage space in the cargo com-
partment ........................................ 272
Using ............................................. 298
Jump starting (engine) ...................... 272
Jump-start (engine)
see Jump starting (engine) K
Key Display messages (vehicle with
steering wheel buttons)

................. 227
Display messages (vehicle with-
out steering wheel buttons) ........... 209
Position in the ignition lock ............ 127
Kickdown ........................................... 135L
Lamps Display messages (vehicle with-
out steering wheel buttons) ...........

202
see Warning and indicator lamps
Lane detection (automatic)
see Lane Keeping Assist
Lane Keeping Assist
Activating/deactivating ................. 154
Display message ............................ 222
Function/information .................... 153
Important safety notes .................. 154
Setting sensitivity (on-board
computer) ...................................... 191
Setting the sensitivity .................... 155
Language
Display (vehicle with steering
wheel buttons) ............................... 192
Display (vehicle without steering
wheel buttons) ............................... 179
Lashing points and tie downs
Permissible tensile load ................. 313
Lashing strap
Important safety notes .................. 246
Tensioning strap ............................ 247 LATCH-type (ISOFIX) child seat
anchors
................................................

63
License plate lamp
Changing bulbs .............................. 105
License plate lamps
Display messages (vehicle with
steering wheel buttons) ................. 217
Display messages (vehicle with-
out steering wheel buttons) ........... 203
Light sensor
Display messages (vehicle with
steering wheel buttons) ................. 216
Display messages (vehicle with-
out steering wheel buttons) ........... 202
Lighting
see Lights
Lights
Activating/deactivating the inte-
rior lighting delayed switch-off ....... 193
Automatic headlamp mode ............ 100
Changing bulbs (halogen head-
lamps) ............................................ 105
Changing bulbs (interior lights) ...... 103
Display messages (vehicle with
steering wheel buttons) ................. 216
Driving abroad ............................... 141
Fog lamps ...................................... 100
Hazard warning lamps ................... 101
High beam flasher .......................... 101
High-beam headlamps ................... 101
Important safety notes .................... 99
Light switch ..................................... 99
Low-beam headlamps .................... 100
Parking lamps .................................. 99
Rear fog lamp ................................ 100
Replacing bulbs (halogen head-
lamps) ............................................ 105
Standing lamps ................................ 99
Switching the daytime running
lamps on/off (switch) .................... 100
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 193
Switching the surround lighting
on/off (on-board computer) .......... 193
Turn signals ................................... 101
Limited Warranty ................................ 27
Load distribution ............................... 243 14
Index

Important safety notes .................... 46
Introduction to the restraint sys-
tem ..................................................
46
Occupant Classification System
(OCS) ............................................... 54
PASSENGER AIR BAG OFF indica-
tor lamp ........................................... 47
Pets in the vehicle ........................... 66
Restraint system warning lamp ........ 46
Seat belt .......................................... 47
OCS
Faults ............................................... 57
Operation ......................................... 54
Self-test ........................................... 56
Odometer
Displaying (vehicle with steering
wheel buttons) ............................... 183
Displaying (vehicle without steer-
ing wheel buttons) ......................... 177
Setting the display unit (vehicle
with steering wheel buttons) ......... 192
Setting the display unit (vehicle
without steering wheel buttons) .... 180
Off-road driving
Checklist after driving off-road ...... 146
Important safety notes .................. 144
Rules for driving off-road ............... 145
Oil
see Engine oil
On-board computer (vehicle with
steering wheel buttons)
Assistance menu ........................... 189
Audio menu ................................... 187
Date menu ..................................... 192
Display messages .......................... 209
Factory settings ............................. 194
Important safety notes .................. 174
Instrument cluster menu ............... 192
Lights menu ................................... 193
Menu overview .............................. 183
Message memory .......................... 209
Navigation menu ............................ 185
Operating ....................................... 181
Permanent display ......................... 192
Service menu ................................. 191
Setting the date ............................. 192
Setting the display ......................... 192
Setting the display language .......... 192 Setting the language ...................... 192
Setting the time ............................. 192
Settings menu ............................... 191
Standard display ............................ 183
Telephone menu ............................ 188
Time menu ..................................... 192
Trip menu ...................................... 183
Vehicle menu ................................. 193
On-board computer (vehicle with-
out steering wheel buttons)
Coolant temperature display
menu ............................................. 178
Current fuel consumption menu .... 178
Date menu ..................................... 181
Digital speedometer menu ............. 178
Display messages .......................... 194
Distance menu ............................... 177
Factory settings ............................. 179
Important safety notes .................. 174
Menu overview .............................. 177
Message memory .......................... 195
Operating ....................................... 176
Permanent display ......................... 180
Range menu ................................... 178
Setting the date ............................. 181
Setting the display ......................... 180
Setting the display language .......... 179
Setting the language ...................... 179
Setting the time ............................. 181
Settings menu ............................... 179
Standard display menu .................. 177
Time menu ..................................... 181
Trip computer menu ...................... 177
On-board computer (vehicles
with steering wheel buttons)
Displaying the service message ..... 258
On-board computer (vehicles
without steering wheel buttons)
Displaying the service message ..... 258
On-board diagnostic interface
see Diagnostics connection
Operating Instructions
Before the first journey .................... 27
Limited Warranty ............................. 27
Operating safety
Limited Warranty ............................. 2716
Index

Summer tires in winter .................. 280
TIN (Tire Identification Number)
(definition) .....................................
297
Tire bead (definition) ...................... 297
Tire pressure (definition) ................ 296
Tire pressures (recommended) ...... 295
Tire size designation, load-bear-
ing capacity, speed rating .............. 293
Tire tread ....................................... 279
Tire tread (definition) ..................... 297
Total load limit (definition) ............. 297
Traction (definition) ....................... 297
TWR (permissible trailer drawbar
noseweight) (definition) ................. 297
Uniform Tire Quality Grading
Standards (definition) .................... 295
Wear indicator (definition) ............. 297
Wheel and tire combination ........... 302
Wheel rim (definition) .................... 296
Wheel/tire combinations ............... 301
Tool
see Vehicle tool kit
Top Tether ............................................ 63
Tow-starting
Emergency engine starting ............ 277
Important safety notes .................. 274
Towing
If the vehicle is stuck ..................... 276
Installing/removing the towing
eye ................................................. 275
Towing a trailer
Active Parking Assist ..................... 159
Axle load, permissible .................... 315
Cleaning the trailer tow hitch ......... 268
Coupling up a trailer ...................... 170
Decoupling a trailer ....................... 171
Driving tips .................................... 168
Notes on retrofitting ...................... 315
Power supply ................................. 173
Trailer loads ................................... 315
Towing away
Important safety guidelines ........... 274
With both axles on the ground ....... 276
With the rear axle raised ................ 276
Towing eye
Storage location ............................ 270
Trailer coupling
see Towing a trailer Trailer loads and drawbar nose-
weights
...............................................
172
Trailer operation
Lights display messages (vehicle
with steering wheel buttons) ......... 216
Lights display messages (vehicle
without steering wheel buttons) .... 202
Trailer towing
Blind Spot Assist ............................ 153
ESP ®
................................................ 69
PARKTRONIC ................................. 159
Permissible trailer loads and
drawbar noseweights ..................... 172
Transmission
see Automatic transmission
Transmission oil ................................ 310
Transmission positions
Automatic transmission ................. 132
Display (DIRECT SELECT lever) ...... 132
Transport
Lashing straps ............................... 246
Loading guidelines ......................... 242
Stickers ......................................... 246
Vehicle ........................................... 276
Transport by rail ................................ 142
Transportation
Rail ................................................ 142
Transportation aids
Load protection net ....................... 248
Transporting
Cargo compartment variations ...... 244
Load distribution ............................ 243
Securing a load .............................. 244
Trim pieces (cleaning instruc-
tions) .................................................. 269
Trip computer
Displaying (vehicle with steering
wheel buttons) ............................... 184
Displaying (vehicle without steer-
ing wheel buttons) ......................... 177
Resetting (vehicle with steering
wheel buttons) ............................... 185
Resetting (vehicle without steer-
ing wheel buttons) ......................... 177
Selecting the display units (vehi-
cle with steering wheel buttons) .... 192 Index
23

In some countries, certain parts are only offi-
cially approved for installation or modification
if they comply with legal requirements. All gen-
uine Mercedes-Benz parts satisfy these
requirements. Make sure that all parts are
suitable for your vehicle.
Always specify the vehicle identification num-
ber (VIN) ( Y page
304) and engine number
when ordering genuine Mercedes-Benz parts
(Y page 305). QR code for rescue card
The QR Code stickers are affixed to the B-pillar
on the driver's and front-passenger side.
In the event of an accident the rescue services
use the QR Code to quickly find the rescue
card for your vehicle. The current rescue card
contains the most important information on
your vehicle, e.g. the electric cable routes, in a
compact form.
Further information can be found at http://
www.mercedes-benz.de/qr-code. Data stored in the vehicle
Electronic control units
Electronic control units are installed in your
vehicle. Some of them are necessary to ensure
that your vehicle functions safely, some are
there to support the driver (driver assistance
systems). In addition to that, your vehicle
offers convenience and entertainment func-
tions which are also made possible by the use
of electronic control units.
Electronic control units contain data memories
which can store technical information on the
vehicle's operating state, component stress,
maintenance requirements as well as technical
events and malfunctions either temporarily or
permanently.
In general, this information documents the sta-
tus of a component, a module, a system or the
surroundings, for example:
R operating states of system components (e.g.
fill levels, battery status, tire pressure)
R status messages concerning the vehicle or
its individual components (e.g. number of
wheel revolutions/speed, deceleration in movement, lateral acceleration, display of
fastened seat belts)
R malfunctions and defects in important sys-
tem components (e.g. lights, brakes)
R information on events damaging the vehicle
R system responses in special driving situa-
tions (e.g. air bag deployment, intervention
of stability control systems)
R ambient conditions (e.g. temperature, rain
sensor)
In addition to the underlying control unit func-
tion, this data can be used for the detection
and the rectification of malfunctions as well as
the optimization of vehicle functions by the
manufacturer. Most of this data is volatile and
is only processed in the vehicle itself. Only a
small proportion of the data is stored in event
or malfunction memories.
When you use services, the technical data
from the vehicle can be read out by service
network employees (e.g. workshops, manufac-
turers) or third parties (e.g. breakdown serv-
ices). Services can include repair services,
maintenance processes, warranty cases and
quality assurance measures. Data is read out
using the legally prescribed diagnostics con-
nection in the vehicle. The respective repre-
sentatives of the service network or third par-
ties collect, process and use the data. It docu-
ments technical states of the vehicle, helps
staff to find malfunctions and improve quality
and, in certain cases, is passed on to the man-
ufacturer. Furthermore, the manufacturer is
subject to product liability provisions. For this
reason, the manufacturer requires technical
data from vehicles.
Malfunction memories in the vehicle can be
reset within the scope of the repair or service
work carried out by a service outlet.
Depending on the equipment selected, you
can add data to the convenience and infotain-
ment functions of the vehicle yourself.
These include:
R multimedia data, such as music, films or
photos for playback in an integrated multi-
media system
R address book data for use in connection
with an integrated hands-free system or an
integrated navigation system
R navigation destinations entered
R data on the utilization of Internet services Introduction
35 Z

Useful information
This Operator's Manual describes all models
as well as standard and optional equipment of
your vehicle that were available at the time of
going to print. Country-specific variations are
possible. Note that your vehicle may not be
equipped with all of the described functions.
This also applies to systems and functions rel-
evant to safety.
Read the information on qualified specialist
workshops (Y page
32).Occupant safety
Restraint system introduction
The restraint system can reduce the risk of
vehicle occupants coming into contact with
parts of the vehicle's interior in the event of an
accident. In the event of an accident, the
restraint system can also reduce the forces to
which the vehicle occupants are subjected.
The restraint system includes the following
components:
R Seat belt system
R Air bags
R Child restraint system
R Child seat securing system
The various components of the restraint sys-
tem work complementary to one another. They
can only perform their intended protective
function if all vehicle occupants:
R have correctly fastened their seat belt
( Y page

49)
R have correctly adjusted their seat and head
restraint ( Y page 87)
As the driver, you must also ensure that the
driver's seat is in the correct position in rela-
tion to the pedals and the steering wheel.
Depending on your vehicle's equipment, you
can also adjust the steering wheel. Observe
the information relating to the correct driver's
seat position (Y page 87).
Additionally, you must ensure that an air bag
can deploy freely ( Y page 51).
The air bag is supplementary to a correctly fas-
tened seat belt. As an additional safety device,
the air bag increases the level of protection for
vehicle occupants in the event of an accident.
If the protection provided by the seat belt is sufficient, the air bags do not deploy. Further-
more, in the event of an accident, only air bags
which provide greater protection in the given
accident situation deploy. However, seat belts
and air bags generally do not protect against
objects penetrating the vehicle from the out-
side.
Information on how the restraint system oper-
ates can be found in "Deployment of the Emer-
gency Tensioning Devices and air bags"
( Y page

58).
See "Children in the vehicle" for information
on infants and children traveling with you in
the vehicle restraint systems for infants and
children ( Y page 60). Important safety notes
G
WARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in
an accident or trigger unexpectedly, for
example. This poses an increased risk of
injury or even fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify components of the
restraint system for a person with physical dis-
abilities, contact a Mercedes-Benz Commercial
Van Centerfor details. USA only: contact our
Mercedes-Benz Customer Assistance Center
for details at 1‑877 ‑762‑8267. Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and
at regular intervals while the engine is running.
Therefore, malfunctions can be detected in
good time.
The 6 restraint system warning lamp on
the instrument cluster lights up when the igni-
tion is switched on. It goes out no later than a
few seconds after the vehicle is started. The
restraint system is operational. 46
Occupant safety
Safety