Page 307 of 506

305 Operation
Engine compartment
Checking engine oil level with the con-
trol system
When checking the oil level
the vehicle must be parked on level
ground
with the engine at operating tempera-
ture, the vehicle must have been
stationary for at least five minutes with
the engine turned off
with the engine not at operating tem-
perature yet, the vehicle must have
been stationary for at least 30 minutes
with the engine turned off
To check the engine oil level via the multi-
function display, do the following:
Switch on the ignition (
page 33).
The standard display (
page 145) should
appear in the multifunction display.
Press button k or j, on the
steering wheel until the following
message is seen in the multifunction
display:One of the following messages will
subsequently appear in the indicator:
Engine oil level ok
Add 1.0 Qt.
to reach max. oil level(Canada:
1.0 Liter
)
Add 1.5 Qts.
to reach max. oil level(Canada:
1.5 Liters
)
Add 2.0 Qts.
to reach max. oil level(Canada: 2
.0 Liters
)
If necessary, add engine oil.
For adding engine oil, see (
page 306).
For more information on engine oil, see the
“Technical data” section (
page 461) and
(
page 464).
Other display messages
If the SmartKey or KEYLESS-GO start/stop
button* is not in position 2, the following
message will appear:
Switch on ignition
to check engine oil level
Switch on the ignition (
page 33).
If you see the message:
Observe waiting period
iIf you want to interrupt the checking
procedure, press thek orj
button on the multifunction steering
wheel.
Page 308 of 506

306 OperationEngine compartment
If engine is at normal operating
temperature, wait five minutes before
repeating check procedure.
If engine is not at operating tempera-
ture yet, wait 30 minutes before
repeating check procedure.
If you see the message:
Engine oil level
Not when engine on
Turn off the engine.
If the engine is at normal operating
temperature, wait five minutes before
checking oil.
If the engine is not yet at normal
operating temperature, you must wait
30 minutes before checking oil.If there is excess engine oil with the engine
at normal 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 Center.
For more information on messages in the
display concerning engine oil, see the
“Practical hints” section (
page 387). Adding engine oil
!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.
!Only use approved engine oils and oil
filters required for vehicles with Main-
tenance System (U.S. vehicles) or
FSS PLUS (Canada vehicles). For a list-
ing of approved engine oils and oil fil-
ters, refer to the Factory Approved
Service Products pamphlet in your ve-
hicle literature portfolio, or contact an
authorized Mercedes-Benz Center.
Using engine oils and oil filters of spec-
ification other than those expressly re-
quired 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
vehicles) will result in engine damage
not covered by the Mercedes-Benz
Limited Warranty.
Page 309 of 506
307 Operation
Engine compartment
1Filler cap (Gasoline engine)1Filler cap (Diesel engine)
Unscrew filler cap1 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.
Screw filler cap1 back on filler neck.
For more information on engine oil, see the
“Technical data” section (
page 461) and
(
page 464).!Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter (Gaso-
line engine) or oxidation catalyst (Die-
sel engine) not covered by the
Mercedes-Benz Limited Warranty.
Page 347 of 506

345 Operation
Maintenance
Calling up the maintenance service indicator
Switch on the ignition (
page 33).
The standard display of the control sys-
tem appears (
page 145).
Press button k or j on the mul-
tifunction steering wheel until the
maintenance service indicator with the
service symbol 9 or ´ and the
service deadline appears in the multi-
function display.Resetting the maintenance service
indicator
In the event that the maintenance service
on your vehicle is not carried out by an au-
thorized Mercedes-Benz Center, you can
have the maintenance service indicator re-
set. The automotive maintenance facility
carrying out the maintenance service will
find the information for resetting the main-
tenance service indicator in the mainte-
nance-relevant information for your
vehicle. Such information is available from
either your authorized Mercedes-Benz
Center or directly from Mercedes-Benz.
iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the maintenance
service indicator. To arrive at the true
maintenance service deadline, you will
need to subtract these days from the
days shown in the maintenance service
indicator.
Do not confuse the maintenance ser-
vice indicator with the engine oil level
indicator :.
iIf the maintenance service indicator
was inadvertently reset, have an autho-
rized Mercedes-Benz Center correct it.
Only reset if the proper maintenance
service has been performed. Resetting
the system without performing the
proper service as called for by the
maintenance service indicator will re-
sult in engine damage and/or other ve-
hicle damage not covered by the
Mercedes-Benz Limited Warranty.
Page 389 of 506
387 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
:
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 306) and
check the engine oil level
(
page 305).
Engine oil level
Stop, 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 possible.
Turn off the engine.
Add engine oil (
page 306) and
check the engine oil level
(
page 305).
Engine oil level
Reduce oil level
You have added too much engine oil.
There is a risk of damaging:
the engine
the catalytic converter (Gasoline en-
gine)
the oxidation catalyst (Diesel engine)
Have oil siphoned or drained off. Ob-
serve all legal requirements with re-
spect to its disposal.
Page 390 of 506

388 Practical hintsWhat to do if …When the
Engine oil - Visit workshop
message appears while the engine is run-
ning and at operating temperature, the en-
gine oil level has dropped to approximately
the minimum level.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.If no oil leaks are noted, continue to drive
to the nearest service station where the
engine oil should be topped to the required
level with an approved oil specified in the
Factory Approved Service Products pam-
phlet.
Display symbol
Display messages
Possible cause
Possible solution
:
Engine oil
Visit workshop
The engine oil has dropped to a critical
level.
Check the engine oil level
(page 305) and add oil as required
(page 306).
If you must add engine oil frequently,
have the engine checked for possible
leaks.
It may be that there is water in the engine
oil.
Have the engine oil checked.
Engine oil level
Visit workshop
The measuring system is malfunctioning.
Have the measuring system checked
by an authorized Mercedes-Benz
Center.!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Page 463 of 506
461 Technical data
Fuels, coolants, lubricants etc.
Fuels, coolants, lubricants etc.
CapacitiesVehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by
Mercedes-Benz.Please refer to the Factory Approved Ser-
vice Products Pamphlet, or inquire at your
authorized Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants etc.
Engine with oil filter
E 320
E 320 4MATIC
8.5 US qt (8.0 l)
Approved engine oils
E 500
E 500 4MATIC
8.0 US qt (7.5 l)
E55AMG
9.0 US qt (8.5 l)
E 320 CDI
6.87 US qt (6.5 l)
Automatic transmission
8.0 US qt (7.5 l)
MB Automatic Transmission Fluid
Front axle
E 320 4MATIC
E 500 4MATIC
0.63 US qt (0.6 l)
Hypoid gear oil SAE 85 W 90
Rear axle
E 320
E 320 4MATIC
1.06 US qt (1.0 l)
Hypoid gear oil SAE 85 W 90
E 320 CDI
E 500
E 500 4MATIC
E55AMG
1.37 US qt (1.3 l)
Transfer case
E 320 4MATIC
E 500 4MATIC
0.62 US qt (0.585 l)
MB Transfer Case Fluid
Page 466 of 506

464 Technical dataFuels, coolants, lubricants etc.Engine 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 Sys-
tem (U.S. vehicles) or FSS PLUS (Canada
vehicles). For a listing of approved engine
oils and oil filters, refer to the Factory Ap-
proved Service Products pamphlet, or con-
tact an authorized Mercedes-Benz Center.
Using engine oils and oil filters of specifica-
tion other than those expressly required
for the Maintenance System (U.S. vehi-
cles) or FSS PLUS (Canada vehicles), or
changing of oil and oil filter at change inter-
vals longer than those called for by the
Maintenance System (U.S. vehicles) or
FSS PLUS (Canada vehicles) will result in
engine 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 damage not covered by the
Mercedes-Benz Limited Warranty.
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
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.Therefore, the brake fluid
must be replaced every two years, prefera-
bly in the spring.Only brake fluid approved
by Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Center will pro-
vide you with additional information.