Mercedes-Benz ML320. Service manual - part 98

 

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Mercedes-Benz ML320. Service manual - part 98

 

 

219

Operation

Engine compartment

Checking engine oil level via display

When checking the oil level the vehicle 
must

be parked on level ground

be at normal operating temperature

have been stationary for at least five 
minutes with the engine turned off

To check the engine oil level via the display 
in the speedometer, do the following:

Turn the key in the steering lock to 
position 2.

1 Button
2 Display in speedometer

Wait until the display 

------

 appears in 

the speedometer display 2.

Within one second press button 1 
twice.

One of the following messages will 
subsequently appear in the display:

OIL i.O

The oil level is correct. Engine oil 
does not to be added.

– 1.0 L

Add 1.0 liter of engine oil.

– 1.5 L

Add 1.5 liters of engine oil.

– 2.0 L

Add 2.0 liters of engine oil.

For adding engine oil see (

page 302).

More information on engine oil can be 
found in the “Technical data” section 
(

page 300) and (

page 301).

Other display messages

If there is excess engine oil with the engine 
at normal operating temperature, the 
following message will appear in the 
display:

OIL HI

The oil level is too high.

Have excess oil siphoned.

!

Excess oil must be siphoned or drained 
off. It could cause damage to the 
engine and catalytic converter not 
covered by the Mercedes-Benz Limited 
Warranty.

220

Operation

Engine compartment

The display 

------

 flashes in the 

speedometer display, if a proper oil level 
check cannot be performed.

If engine is at normal operating 
temperature, wait five minutes before 
repeating check procedure.

If engine is not yet at normal operating 
temperature, wait 30 minutes before 
repeating check procedure.

See the “Practical hints” section 
(

page 253) if the low engine oil level 

warning lamp in the instrument cluster 
flashes.

Checking engine oil level with the oil 
dipstick

When checking the oil level the vehicle 
must

be parked on level ground

be at normal operating temperature

have been stationary for at least five 
minutes with the engine turned off

To check the engine oil level with the oil 
dipstick, do the following:

Open the hood (

page 217).

Pull out oil dipstick 1 (

page 221).

Wipe oil dipstick 1 clean.

Fully insert oil dipstick 1 into the 
dipstick guide tube.

Pull out oil dipstick 1 again after 
approximately three seconds to obtain 
accurate reading.

Oil dipstick

The oil level is correct when it is between 
the lower (min) and upper (max) mark of 
the oil dipstick.

i

Perform the engine oil level check with 
the dipstick if it cannot be completed 
via the speedometer display 
(

page 220).

In this case we recommend that you 
have the system checked at a 
Mercedes-Benz Light Truck Center.

i

The engine oil level can be checked by 
either the oil dipstick or via the 
speedometer display in the instrument 
cluster (

page 219). The amount of 

engine oil needed is shown more 
precisely in the speedometer display.

221

Operation

Engine compartment

If necessary, add engine oil.

For adding engine oil see (

page 221).

More information on engine oil can be 
found in the “Technical data” section 
(

page 300) and (

page 301).

See the “Practical hints” section 
(

page 253) if the low engine oil level 

warning lamp in the instrument cluster 
flashes.

Adding engine oil

1 Oil dipstick
2 Filler cap

Unscrew filler cap 2 from filler neck.

Add engine oil as required. Be careful 
not to overfill with oil.

Be careful not to spill any oil when adding. 
Avoid environmental damage caused by oil 
entering the ground or water.

i

The filling quantity between the upper 
and lower marks on the oil dipstick is 
approximately 2.1 US qt. (2.0 l).

!

Only use approved engine oils. For a 
listing of approved engine oils, refer to 
the Factory Approved Service Products 
pamphlet in your vehicle literature port-
folio.

In addition, check the oil filler cap for 
important information pertaining to the 
engine oil needing to meet a specific 
Mercedes-Benz specification 
(e.g. MB 229.5). If such information is 
printed on the oil filler cap, only use an 
engine oil from the list of approved en-
gine oils in the Factory Approved Ser-
vice Products pamphlet that meets the 
specification indicated on the oil filler 
cap. Using engine oils of other specifi-
cation may cause the FSS to incorrect-
ly determine the next service interval 
and will result in engine damage not 
covered by the Mercedes-Benz Limited 
Warranty.

컄컄

222

Operation

Engine compartment

Screw filler cap 2 back on filler neck.

More information on engine oil can be 
found in the “Technical data” section 
(

page 300) and (

page 301).

Transmission fluid level

The transmission fluid level does not need 
to be checked. If you notice transmission 
fluid loss or gear shifting malfunctions, 
have an authorized Mercedes-Benz Light 
Truck Center check the automatic trans-
mission.

Coolant

The engine coolant is a mixture of water 
and anticorrosion/antifreeze. To check 
the coolant level, the vehicle must be 
parked on level ground and the engine 
must be cool.

!

Excess oil must be siphoned or drained 
off. It could cause damage to the 
engine and catalytic converter not 
covered by the Mercedes-Benz Limited 
Warranty.

Warning!

G

In order to avoid any possibly serious burns:

Use extreme caution when opening the 
hood if there are any signs of steam or 
coolant leaking from the cooling system, 
or if the coolant temperature gauge indi-
cates that the coolant is overheated.

Do not remove pressure cap on coolant 
reservoir if engine temperature is above 
194°F (90°C). Allow engine to cool 
down before removing cap. The coolant 
reservoir contains hot fluid and is under 
pressure.

Using a rag, slowly open the cap approx-
imately ½ turn to relieve excess pres-
sure. If opened immediately, scalding 
hot fluid and steam will be blown out un-
der pressure.

Do not spill antifreeze on hot engine 
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.

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