Index....................................................... 4
Introduction......................................... 23
Operating Instructions .......................... .23
Service and vehicle operation ................ 23
Proper use ............................................. 25
Protection of the environment ............... 25
Operating safety and vehicle approval
............................................................... 26
Genuine Mercedes-Benz parts ............... 29
QR code for rescue card ........................ 30
Data stored in the vehicle ...................... 30
At a glance ........................................... 32
Cockpit .................................................. 32
Instrument cluster ................................. 33
Steering wheel buttons .......................... 36
Center console ...................................... 36
Overhead control panel ......................... 37
Door control panel ................................. 38
Further control panels ........................... 38
Safety ................................................... 40
Useful information ................................. 40
Occupant safety .................................... 40
Children in the vehicle ........................... 47
Pets in the vehicle ................................. 52
Driving safety systems ........................... 53
Emergency exit ...................................... 56
Theft deterrent locking system .............. 57
Opening and closing ...........................59
Useful information ................................. 59
Key ........................................................ 59
Central locking ...................................... 63
Driver's door and front passenger
door ....................................................... 64
Sliding door ........................................... 65
Electrical step ........................................ 66
Rear doors ............................................. 67
Partition sliding door ............................. 69
Side windows ......................................... 70
Seats, steering wheel and mirrors ....72
Useful information ................................. 72
Seats ..................................................... 72
Steering wheel ....................................... 77
Mirrors ................................................... 78
Lights and windshield wipers ............80
Useful information ................................. 80
Exterior lighting ..................................... 80
Interior lighting ...................................... 85
Changing bulbs ...................................... 87
Windshield wipers .................................. 94
Climate control .................................... 97
Useful information ................................. 97
Overview of climate control systems ..... 97
Operating the climate control system .. 100
Adjusting the air vents ......................... 104
Operating the auxiliary heating sys-
tem ...................................................... 105
Operating the cargo compartment air
vents .................................................... 115
Driving and parking ..........................116
Useful information ............................... 116
Breaking-in notes ................................. 116
Driving ................................................. 116
Automatic transmission ....................... 121
Refueling ............................................. 124
Parking ................................................ 127
Driving tips .......................................... 130
Driving systems ................................... 137
Working mode ..................................... 151
Towing a trailer .................................... 152
On-board computer and displays ....158
Useful information ............................... 158
Important safety notes ........................ 158
Instrument cluster ............................... 158
On-board computer (vehicles without
steering wheel buttons) ....................... 160
On-board computer (vehicles with
steering wheel buttons) ....................... 161
Display messages ................................ 173
2Contents
Emergency running mode .............. 124
Important safety notes .................. 121
Kickdown ....................................... 123
Maneuvering .................................. 123
Overview ........................................ 121
Problem (malfunction) ................... 124
Releasing the parking lock man-
ually ............................................... 124
Selector lever ................................ 121
Selector lever positions ................. 122
Shift ranges ................................... 123
Starting the engine ........................ 118
Touchshift ...................................... 122
Trailer towing ................................. 123
Transmission oil change ................ 279
Automatic transmission emer-
gency mode ....................................... 124
AUX port ............................................. 207
Auxiliary heater
see Auxiliary warm-air heater
see Hot-water auxiliary heater
Auxiliary heating
Activating/deactivating heater
booster mode ................................ 110
Adjusting ....................................... 170
Conditions for switching on ........... 107
Heating time .................................. 106
Important safety notes .................. 105
Operating with the button (control
panel) ............................................ 107
Operation with the remote con-
trol ................................................. 108
Operation with the timer ................ 112
Selecting a switch-on time ............. 107
Setting the switch-on time ............. 108
see Auxiliary heating
see Auxiliary warm-air heater
see Hot-water auxiliary heater
Auxiliary warm-air heater
Problem (malfunction) ................... 115
Axle load, permissible (trailer tow-
ing) ...................................................... 283
B
Backup lamps
Replacing bulbs ............................... 90 Backup lamps (Chassis Cab)
Replacing bulbs ............................... 91
BAS (Brake Assist System)
Display message ............................ 179
Function/notes ................................ 54
Indicator lamp ................................ 191
Basic settings
see Settings
Battery
Isolating switch .............................. 116
Replacing (SmartKey) ...................... 61
Battery (SmartKey)
Checking .......................................... 61
Important safety notes .................... 61
Replacing ......................................... 61
Battery (vehicle)
Care ............................................... 228
Charge indicator lamp ................... 194
Charging ........................................ 228
Disconnecting and connecting ....... 225
Disconnecting and connecting
(engine compartment) ................... 227
Display message ............................ 189
Important safety notes .................. 223
Installing/removing (engine com-
partment) ....................................... 228
Jump starting ................................. 238
Location ......................................... 224
Removing and installing ................. 226
Removing and installing the floor
covering ......................................... 224
Before driving off
Important safety notes .................. 118
Belt
see Seat belts
Belt warning ......................................... 44
Bleeding the fuel system .................. 120
Blind Spot Assist
Activating/deactivating ......... 143, 170
Notes/function .............................. 141
Trailer towing ................................. 143
Bottle holder
see Cup holder
Brake Assist
see BAS (Brake Assist System)
Brake Assist System
see BAS (Brake Assist System)
Index5
Adaptive Brake Assist .................... 140
ASR (Acceleration Skid Control) ...... 54
BAS (Brake Assist System) .............. 54
Distance warning function ............. 139
EBD (electronic brake force distri-
bution) ............................................. 55
ESP
®(Electronic Stability Pro-
gram) ............................................... 55
Important safety information ........... 53
Overview .......................................... 53
Driving systems
Blind Spot Assist ............................ 141
Cruise control ................................ 137
Display message ............................ 186
Lane Keeping Assist ...................... 143
PARKTRONIC ................................. 148
Driving tips
Automatic transmission ................. 123
Brakes ........................................... 132
Break-in period .............................. 116
Checking brake lining thickness .... 133
Downhill gradient ........................... 132
Drinking and driving ....................... 130
Driving abroad ............................... 131
Driving in winter ............................. 134
Driving on flooded roads ................ 134
Driving on wet roads ...................... 134
Exhaust check ............................... 131
Fuel ................................................ 130
General .......................................... 130
Hydroplaning ................................. 134
Icy road surfaces ........................... 134
Important safety notes .................. 116
Limited braking efficiency on sal-
ted roads ....................................... 133
New brake disks ............................ 133
New brake pads/linings ................ 133
Off-road driving .............................. 135
Overrun cut-off .............................. 130
Snow chains .................................. 246
Speed limitation ............................. 131
Towing a trailer .............................. 152
Transport by rail ............................. 132
Wet road surface ........................... 133
DSR (Downhill Speed Regulation) .... 146
E
EBD (electronic brake force distri-
bution)
Display message ............................ 180
Function/notes ................................ 55
Indicator lamps .............................. 191
Electrical closing assist ...................... 66
Electrical fuses
see Fuses
Electrical step
Cleaning ......................................... 233
Display message ............................ 189
Emergency release .......................... 66
Function ........................................... 66
Important safety notes .................... 66
Indicator lamp ................................ 199
Manual retraction ............................ 66
Obstacle detection ........................... 66
Electrical system
Battery main switch ....................... 116
Electronic brake force distribution
see EBD (electronic brake force
distribution)
Electronic Stability Program
see ESP
®(Electronic Stability Program)
Electronic Traction System
see 4ETS (Electronic Traction System)
Emergency exit .................................... 56
Emergency exit window ..................... 56
Emergency Tensioning Devices
Activation ......................................... 46
Emissions control
Service and warranty information .... 23
Engine
ADR (working speed governor) ...... 151
Changing the power output ............. 27
Check Engine warning lamp ........... 196
Cleaning instructions ..................... 230
Engine number ............................... 273
Engine speed setting (working
mode) ............................................ 152
Irregular running ............................ 120
Jump-starting ................................. 238
Operating safety .............................. 27
Starting .......................................... 118
Starting problems .......................... 120
Switching off .................................. 129
10Index
Load bearing index (definition) ...... 261
Load index .....................................258
Load index (definition) ................... 260
M+S tires ....................................... 245
Maximum load on a tire (defini-
tion) ............................................... 261
Maximum loaded vehicle weight
(definition) ..................................... 260
Maximum permissible tire pres-
sure (definition) .............................2 61
Maximum tire load ......................... 259
Maximum tire load (definition) ....... 261
Optional equipment weight (defi-
nition) ............................................ 261
PSI (pounds per square inch) (def-
inition) ...........................................2 61
Replacing ....................................... 262
Service life ..................................... 244
Sidewall (definition) ....................... 261
Snow chains .................................. 246
Speed rating (definition) ................ 260
Storing ...........................................2 62
Structure and characteristics
(definition) ..................................... 259
Summer tires ................................. 245
TIN (Tire Identification Number)
(definition) ..................................... 261
Tire bead (definition) ......................2 61
Tire pressure (definition) ................ 261
Tire pressures (recommended) ...... 260
Tire size (data) ....................... 252, 268
Tire size designation, load-bearing
capacity, speed rating .................... 257
Tire tread ....................................... 244
Tire tread (definition) ..................... 261
Total load limit (definition) ............. 261
Traction (definition) ....................... 261
TWR (permissible trailer drawbar
noseweight) (definition) ................. 261
Uniform Tire Quality Grading
Standards (definition) .................... 260
Wear indicator (definition) ............. 261
Wheel rim (definition) .................... 260
Top Tether ............................................ 50
To
uchshift (automatic transmis-
sion) .................................................... 122
Tow-away alarm
Arming/deactivating ........................ 57 Deactivating ..................................... 57
Operation ......................................... 57
Tow-starting
Emergency engine starting ............ 242
Important safety notes .................. 239
Towing
If the vehicle is stuck ..................... 241
Installing/removing the towing
eye ................................................. 240
With a raised front or rear axle ...... 241
Towing a trailer
Axle load, permissible .................... 283
Cleaning the trailer tow hitch ......... 233
Coupling up a trailer ......................1 54
Decoupling a trailer ....................... 156
Driving tips ....................................1 52
Important safety notes .................. 152
Notes on retrofitting ......................2 82
Trailer loads ................................... 283
Towing away
Important safety guidelines ........... 239
In the event of malfunctions .......... 240
With both axles on the ground ....... 241
Trailer
Brake force booster malfunction ... 192
Trailer coupling
see Towing a trailer
Trailer loads and drawbar nose-
weights ............................................... 156
Trailer towing
Blind Spot Assist ............................ 143
PARKTRONIC ................................. 150
Permissible trailer loads and
drawbar noseweights ..................... 156
Transmission
see Automatic transmission
Transmission oil ................................ 279
Transport
Loading guidelines ......................... 208
Vehicle ...........................................2 42
Transport by rail ................................ 132
Transportation
Rail ................................................ 132
Transporting
Load distribution ............................ 210
Securing a load .............................. 210
Trim pieces (cleaning instruc-
tions) ..................................................2 34
20Index
Exceptionally, if the service brake fails, the park-
ing brake can be used to brake the vehicle in an
emergency.
XEmergency braking: press and hold release
button ;and carefully apply brake lever :.
Switching off the engine
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
!If the coolant temperature is very high, e.g.
after driving on hilly roads, leave the engine
running at idle speed for about two minutes
before turning it off.
This allows the coolant temperature to return
to normal.
XStop the vehicle.
XShift the automatic transmission to position
P .
XApply the parking brake.
XTurn the key to position 0in the ignition lock
and remove it.
The immobilizer is activated.
XSecure the vehicle to prevent it from rolling
away (Ypage 127).
Wheel chock
Use the wheel chock or a similar object to pre-
vent the vehicle from rolling away, e.g. when
parking or changing a wheel.
Wheel chock in the load/passenger compartment
XTo remove the wheel chock on Cargo
Vans/Passenger Vans: pull restraining
cable :down a little and remove it from
retainer ;.
XRemove the chock.
iWhen stowing the wheel chock, make sure
that restraining cable :is holding it securely
in retainer ;.
Wheel chock to the rear of the chassis on the left
side of the vehicle (example)
XTo remove the wheel chock on Cab Chas-
sis:pull the locking springs down and remove
the wheel chock.
iWhen stowing the wheel chock, make sure
that it is secured in the retainer with the lock-
ing springs.
Parking the vehicle for a long period
If you park your vehicle for longer than
three weeks:
Rconnect the batteries to a trickle charger or
Rdisconnect the vehicle's starter battery or
Parking129
Driving an d parking
Z
ProblemPossible causes/consequences andMSolutions
b
The red brake sys-
tem indicator
lamp is lit while
the engine is run-
ning.There is insufficient brake fluid in the expansion tank.
GWARNING
Braking performance can be impaired.
There is a risk of an accident.
XVehicles with steering wheel buttons: also observe the messages in
the display (Ypage 173).
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XCheck the brake fluid level in the expansion tank (Ypage 219).
XIf the brake fluid is below the MIN mark: do not drive on!
XDo not add brake fluid. This does not solve the problem.
XConsult a qualified specialist workshop.
b When towing a
trailer: the red
brake system
indicator lamp is
lit while the
engine is running.
Additionally, a
warning tone
sounds.GWARNING
The brake force booster in the trailer is faulty.
The driving and braking characteristics of your vehicle could change.
There is a risk of the trailer overbraking and of you losing control over
the truck/trailer combination.
There is a risk of an accident.
XVehicles with steering wheel buttons: also observe the messages in
the display (Ypage 173).
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XDo not drive on.
XConsult a qualified specialist workshop.
: The yellow
ASR/BAS indica-
tor lamp is lit
while the engine
is running.ASR has been deactivated due to a malfunction.
The engine power output may be reduced.
GWARNING
The driven wheels can spin when accelerating.
There is an increased risk of skidding and accidents.
XDrive on with care.
XConsult a qualified specialist workshop as soon as possible.
: The yellow
ASR/BAS indica-
tor lamp is lit
while the engine
is running.BAS has been deactivated due to a malfunction.
GWARNING
The brake system continues to function normally, but without elec-
tronic support.
The braking distance can increase in emergency braking situations.
There is a risk of an accident.
XDrive on with care.
XVisit a qualified specialist workshop immediately.
192Indicator and warning lamps in the instrument cluster
On-board computer and displays