Page 272 of 457

271 Operation
Engine compartment
If necessary, add engine oil 
(
page 273).
For more information on engine oil, see the 
“Technical data” section (
page 423) and 
(
page 425).
Other display messages
If the SmartKey is not turned to position2 
in the starter switch, the following 
message will appear:
Switch
ignition on to
check engine
oil level
Switch on the ignition (page 39).
If you see the message:
Observe
waiting time
If the engine is at operating 
temperature, wait 5 minutes before 
repeating check procedure.
If the engine is not at operating 
temperature yet, wait 30 minutes 
before repeating check procedure.
If you see the message:
Engine oil
level
Not with
engine on
Turn off the engine.
If the engine is at operating 
temperature, wait 5 minutes before 
checking oil.
If the engine is not at operating 
temperature yet, you must wait 
30 minutes before checking oil.
If there is excess engine oil with the engine 
at operating temperature, the following 
message will appear:
Engine oil
level
Reduce oil
level
Have excess oil siphoned or drained 
off. Contact an authorized 
Mercedes-Benz Light Truck Center.
For more information on messages in the 
multifunction display concerning engine 
oil, see the “Practical hints” section 
(
page 351). 
!Excess oil must be siphoned or drained off. 
It could cause damage to the engine and/or 
catalytic converter not covered by the 
Mercedes-Benz Limited Warranty.
iG 500 only:
Perform the engine oil level check with the oil 
dipstick if it cannot be completed with the 
control system (
page 272).
In this case we recommend that you have the 
system checked at a Mercedes-Benz Light Truck 
Center. 
     
        
        Page 273 of 457

272 Operation
Engine compartment
Checking engine oil level with the oil 
dipstick (G 500 only)
When checking the oil level
the vehicle must be parked on level 
ground
with the engine at operating 
temperature, the vehicle must have 
been stationary for at least 5 minutes 
with the engine turned off
with the engine not at operating 
temperature yet, the vehicle also must 
have been stationary for at least 
5 minutes with the engine turned off
Open the hood (page 267).1Oil dipstick
2Upper mark
3Lower mark
Pull out oil dipstick1.
Wipe oil dipstick1 clean.
Fully insert oil dipstick1 into the 
dipstick guide tube.
Pull out oil dipstick1 again after 
approximately 3 seconds to obtain 
accurate reading.
The oil level is correct when it is 
between lower mark3 (min.) and 
upper mark2 (max.) of the oil 
dipstick.
If necessary, add engine oil 
(
page 273).
For more information on engine oil, see the 
“Technical data” section (
page 423) and 
(
page 425).
For more information on messages in the 
multifunction display concerning engine 
oil, see the “Practical hints” section 
(
page 351). 
iThe filling quantity between the upper and 
lower marks on the oil dipstick is approximately 
2.1 US qt (2.0 l). 
     
        
        Page 438 of 457

437 Index
Driving on sand 259
Driving systems 197
Cruise control 197
Driving safety systems 88
Rear Parking Assist 200
Rear view camera 203
Rear view camera* 203
Driving through water 257
E
Easy-entry/exit feature
Activating 156
EBB 88, 92
Electrical fuses 405
Electrical outlet 223
In cargo compartment 224
In front passenger footwell 223
In rear passenger footwell 224
Electrical system
Technical data 419
Electronic Brake Booster (EBB) 92
Electronic Stability Program see ESP
®
Electronic systems
Message in display 365
Electronic Traction System (ETS) 91
Emergency calls
Tele Aid 230Emergency, In case of
Roadside Assistance 232
Emergency operation
Remote door unlock, Tele Aid 235
Emergency operation (Limp Home 
Mode) 169
Emergency operations
Closing tilt/sliding sunroof 374
Locking the vehicle 371
Opening tilt/sliding sunroof 374
Unlocking the tailgate 371
Unlocking the vehicle 370
Emergency Tensioning Device see ETD
Emission control 263
Emission control information label 413
Ending
A call (telephone) 160
Engine
Compartment 267
Starting with SmartKey 54
Technical data 415
Turning off with SmartKey 64
Engine cleaning 316
Engine compartment 267
Hood 267Engine malfunction indicator lamp 27, 
328–329
Engine oil 269, 425
Adding 273
Additives 425
Checking level 269
Consumption 269
Messages in display 271, 351–352
Oil dipstick 272
Engine oil level see Oil level
ESP
®27, 88, 92
Messages in display 341
Switching off 94
Switching on 95
Warning lamp 330–331
ETD 68, 78
Safety guidelines 72
Expanding cargo compartment 206
Extending gear range 168
Exterior lamp switch 117
Exterior lamps
Delayed shut-off 153
Exterior rear view mirrors
Adjusting 46
Exterior view 22 
     
        
        Page 445 of 457

444 Index
O
Occupant distribution 305
Occupant safety 68
Air bags 70
Children in the vehicle 78
Fastening the seat belt 48
Front passenger front air bag off 
indicator lamp 81
Infant and child restraint systems 79
LATCH child seat anchors 83
Seat belts 48, 72
Odometer, main 27
Off-road driving 253
Checklist 254
Crossing obstacles 258
Driving on sand 259
Driving through water 257
Returning 260
Rules 253
Special driving features 253
Steep terrain 255
Oil
Adding 273
Consumption 269
Oil dipstick 272Oil level
Checking 266
Checking with the control 
system 270
Checking with the oil dipstick (G 500 
only) 272
One-touch gearshifting 168
Canceling gear range limit 169
Extending gear range 168
Limiting gear range 168
Opening
Doors from the inside 104
Fuel filler flap 264
Fuel filler flap manually 372
Glove box 215
Hood 267
Tailgate 105
Tilt/sliding sunroof 196, 374
Tilt/sliding sunroof in an 
emergency 374
Windows 192Operating
CD player 143
COMAND see separate operating 
instructions
Navigation system 144
Radio 141
Radio transmitters 261
Telephone 159
Operator’s Manual 10
Ornamental moldings 317
Outside temperature indicator 132
Overdue maintenance service 313
Overhead control panel 32
P
Paintwork 316
Paintwork code 412
Panic alarm 87
Panic button on SmartKey 87
Parcel net
In front passenger footwell 218
Parking 62, 248
Parking brake 55, 62
Engaging 62
Message in display 347
Releasing 55