Page 454 of 585

453 Practical hints
What to do if …
When the message
Add 1 qt. engine oil
at next refueling (Canada:
1 liter
)
appears while the engine is running and at
operating temperature, the engine oil level
has dropped to approximately the mini-
mum level.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest
service station where the engine oil should
be topped to the required level with an ap-
proved oil specified in the Factory
Approved Service Products pamphlet.
Display symbol
Display messages
Possible cause/consequence
Possible solution
N
Check eng. oil level
at next refueling
The engine oil level is too low.
Check the engine oil level (
page 360)
(except ML 500), or (
page 358)
(ML 500 only).
USA only:Add 1 qt. engine oil
at next refuelingCanada only:Add 1 liter engine oil
at next refueling
The engine oil level is too low.
Add engine oil (
page 361) and check
the engine oil level (page 360) (except
ML 500), or (
page 358) (ML 500 only).
Engine oil level
cannot be measured
The measuring system is
malfunctioning.
Have the measuring system checked by
an authorized Mercedes-Benz Light Truck
Center.
Page 455 of 585

454 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/conse-
quence
Possible solution
N
Engine oil level
Stop car, turn engine off
There is no oil in the engine.
There is a danger of engine
damage.
Carefully bring the vehicle to a halt as soon as
it is safe to do so in a safe location.
Turn off the engine.
Add engine oil (
page 361) and check the en-
gine oil level (
page 360) (except ML 500), or
(
page 358) (ML 500 only).
Engine oil level
Reduce oil level
You have added too much
engine oil. There is a risk of
damaging the engine and/or
the catalytic converter (gaso-
line engine) or the oxidation
catalyst (diesel engine).
Have oil siphoned or drained off.
Observe all legal requirements with respect to
its disposal.
Engine oil level
Visit workshop
The engine oil has dropped to
a critical level.
Check the engine oil level (
page 360) (except
ML 500), or (
page 358) (ML 500 only) and
add oil as required (
page 361).
If you must add engine oil frequently, have the
engine checked for possible leaks.
!
The engine oil level warnings should not be
ignored. Extended driving with the symbol dis-
played could result in serious engine damagethat is not covered by the Mercedes-Benz
Limited Warranty.
Page 485 of 585

484 Practical hintsReplacing bulbs
Notes on bulb replacement
Only use 12-volt bulbs of the same type
and with the specified watt rating.
Switch lights off before changing a bulb
to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Light Truck Center.Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Light Truck Center:
the additional turn signal lamps in the
exterior rear view mirrors
the high mounted brake lamp
the Bi-Xenon* low beam lamps
the Bi-Xenon high beam flasher spot-
light*
Warning!
G
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before chang-
ing a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
!
Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the vehi-
cle. Only have the LEDs replaced by a qualified
specialist workshop having the necessary skills
and tools for carrying out the work required.
i
Replacing the bulbs for the front lamps is a
technically complex process. For your conve-
nience, we recommend that you have this work
carried out by an authorized Mercedes-Benz
Light Truck Center.
Have the headlamp adjustment checked
regularly.
Page 502 of 585

501 Practical hints
Flat tire
Mounting the new wheel
1Wheel bolt for 18", 19" and 20" light
alloy wheels and collapsible tire (AMG
vehicles)
2Wheel bolt for 17" light alloy wheels or
Minispare wheel (located in vehicle tool
kit (
page 469))
Clean contact surfaces of wheel and
wheel hub.
Guide spare wheel onto the alignment
bolt and push it on the wheel hub.
Insert wheel bolts and tighten them
slightly.
Unscrew the alignment bolt.
Insert the remaining wheel bolt and
tighten it slightly.
!
Wheel bolts2 must be used when mount-
ing 17" light alloy rims or the Minispare wheel.
The use of any wheel bolts other than wheel
bolts2 for 17" light alloy rims or the Minispare
wheel will damage the vehicle’s brakes.
!
To avoid paint damage, place wheel flat
against hub and hold it there while installing first
wheel bolt.
Warning!
G
Always replace wheel bolts that are
damaged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized Mercedes-Benz Light Truck
Center or call Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure to use the correct wheel bolts.
Page 544 of 585

543 Technical data
Fuels, coolants, lubricants
Fuels, coolants, lubricants
Capacities
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by
Mercerdes-Benz.
Please refer to the Factory Approved
Service Products pamphlet, or inquire at
your Mercedes-Benz Light Truck Center.
Warning!
G
Comply with all valid regulations with re-
spect to handling, storing and disposing of
service fluids. Otherwise you could
endanger persons or the environment.
Keep service fluids out of the reach of
children.
If a service fluid is swallowed, contact a
physician immediately.
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
ML 320 CDI
9.5 US qt (9.0 l)
Approved engine oils
ML 350
8.5 US qt (8.0 l)
Approved engine oils
ML 500
9.0 US qt (8.5 l)
Approved engine oils
ML 63 AMG
10.3 US qt (9.7 l)
Approved engine oils
Automatic transmission
All models
9.5 US qt (9.0 l)
MB Automatic Transmission Fluid
Transfer case single speed
All models
0.53 US qt (0.5 l)
MB Automatic Transmission Fluid
Page 545 of 585
544 Technical dataFuels, coolants, lubricants
Model
Capacity
Fuels, coolants, lubricants, etc.
Front axle
All models
1.2 US qt (1.1 l)
Hypoid gear oil
Rear axle
All models
1.2 US qt (1.1 l)
Hypoid gear oil
Power steering
All models
approx. 1.3 US qt (1.2 l)
MB Power Steering Fluid
Front wheel hubs
All models
approx. 1.5oz (43g) each
High temperature roller bearing grease
Brake system
All models
-
MB Brake Fluid (DOT 4+)
Cooling system
ML 320 CDI,
ML 350
approx. 10.0 US qt (9.5 l)
MB Anticorrosion/Antifreeze
ML 500
approx. 10.6 US qt (10.0 l)
MB Anticorrosion/Antifreeze
ML 63 AMG
approx. 12.2 US qt (11.5 l)
MB Anticorrosion/Antifreeze
Page 546 of 585
545 Technical data
Fuels, coolants, lubricants
Model
Capacity
Fuels, coolants, lubricants etc.
Fuel tank
All models
25.1 US gal (95.0 l)
Gasoline engines:
Premium unleaded gasoline
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
Diesel engines:
Diesel fuels according to ASTM D 975 grades
No. 2-D or No. 1-D
including a reserve of
All except
ML 63 AMG
approx. 3.5US gal (13.0l)
including a reserve of
ML 63 AMG
approx. 4.0US gal (15.3l)
Air conditioning system
R-134a refrigerant and special PAG lubricant
oil (never R-12)
Windshield washer and head-
lamp cleaning* system
All models
8.1 US qt (7.7 l)
MB Windshield Washer Concentrate
1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing or MB Windshield Washer Concentrate “MB SummerFit” and
commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 551).
Page 547 of 585

546 Technical dataFuels, coolants, lubricantsEngine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters re-
quired for vehicles with Maintenance
System (U.S. vehicles) or FSS PLUS (Cana-
da vehicles). For a listing of approved en-
gine oils and oil filters, refer to the Factory
Approved Service Products pamphlet, or
contact an authorized Mercedes-Benz
Light Truck Center.
Engine oil additives
Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from
blending oil additives are not covered by
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the
system will occur.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Light Truck
Center will provide you with additional in-
formation.
!
Using engine oils and oil filters of
specification other than those expressly
required for the Maintenance System
(U.S. vehicles) or FSS PLUS (Canada vehicles),
or changing of oil and oil filter at change intervals
longer than those called for by the Maintenance
System (U.S. vehicles) or FSS PLUS (Canada ve-
hicles) will result in engine or emission control
system damage not covered by the
Mercedes-Benz Limited Warranty.Please follow Maintenance System
(U.S. vehicles) or FSS PLUS (Canada vehicles)
recommendations for scheduled oil changes.
Failure to do so could result in engine or
emission control system damage not covered by
the Mercedes-Benz Limited Warranty.
Warning!
G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere. Under extremely strenuous op-
erating conditions, this moisture content
can lead to the formation of bubbles in the
system, thus reducing the system’s efficien-
cy.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s
Maintenance Booklet for replacement inter-
val.