Page 207 of 376

207 Controls in detail
Useful features
Remote door unlock
In case you have locked your vehicle unin-
tentionally (e.g. key inside vehicle), and the
reserve key is not handy:
Contact the Mercedes-Benz Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
You will be asked to provide your pass-
word which you provided when you
completed the subscriber agreement.
Then return to your vehicle and press
trunk lock for minimum of 20 seconds
until the SOS button is flashing.
The message
Emergency call –
Call connected
appears in the multi-
function display.
As an alternative, you may unlock the vehi-
cle via Internet using the ID and password
sent to you shortly after the completion of
your Acquaintance Call.
The Response Center will then unlock your
vehicle with the remote door unlocking
feature.
!If the indicator lamp continues to flash
or the system does not reset, contact
the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada), or Mer-
cedes-Benz Customer Assistance at
1-800-FOR-MERCedes
(1-800-367-6372) in the USA or Cus-
tomer Service at 1-800-387-0100 in
Canada.iThe indicator lamp in the respective
button flashes until the call is conclud-
ed. Calls can only be terminated by a
Response Center or Customer Assis-
tance Center representative except
Roadside Assistance and Information
calls, which can also be terminated by
pressing button
ì
on the multifunc-
tion steering wheel.
iWhen a Tele Aid call has been initiated,
the COMAND system audio is muted
and the selected mode (radio or CD)
pauses. The optional cellular phone (if
installed) switches off. If you must use
this phone, the vehicle must be parked.
Disconnect the coiled cord and place
the call. The navigation system (if en-
ga ged ) wil l continu e to ru n. The dis pla y
in the instrument cluster is available for
use and spoken commands are only
available by pressing the RPT button on
the COMAND unit. A pop-up window
will appear in the COMAND display to
indicate that a Tele Aid call is in
progress.
Page 208 of 376

208 Controls in detailUseful features
Stolen vehicle tracking services
In the event your vehicle was stolen:
Report the incident to the police
The police will issue a numbered inci-
dent report.
Pass this number on to the
Mercedes-Benz Response Center along
with your password issued to you when
you subscribed to the service.
The Response Center will then attempt
to covertly contact the vehicle’s Tele
Aid system. Once the vehicle is locat-
ed, the Response Center will contact
the local law enforcement and you. The
vehicle’s location will only be provided
to law enforcement.
Garage door opener
The built-in remote control is capable of
operating up to three separately controlled
objects.
You can program the signal transmitter
keys.Remote control integrated into the inside
rear view mirror1Indicator lamp
2Hand-held remote control trans-
mitter
3, 4, 5Signal transmitter key
iThe remote door unlock feature is avail-
able if the relevant cellular phone net-
work is available.
The SOS button will flash and the mes-
sage “Emergency call Call connected”
will appear in the multifunction display
to indicate receipt of the door unlock
command.
Once the vehicle is unlocked, a Re-
sponse Center specialist will attempt
to establish voice contact with the ve-
hicle occupants.
If the trunk button was pressed for
more than 20 seconds before door un-
lock authorization was received by the
Response Center, you must wait
15 minutes before pressing the trunk
button again.
Page 222 of 376

222 OperationDriving instructionsStanding water
Passenger compartmentDriving abroad
Abroad, there is a widely-spread
Mercedes-Benz service network at your
disposal. If you plan to drive into areas
which are not listed in the index of your
Mercedes-Benz Center directory, you
should request pertinent information from
your authorized Mercedes-Benz Center.Control and operation of radio trans-
mitters
COMAND, radio and telephone
!Do not drive through flooded areas or
water of unknown depth.
If you must drive through standing wa-
ter, drive slowly to prevent water from
entering the passenger compartment
or the engine compartment. Water in
these areas could cause damage to
electrical components or wiring of the
engine or transmission, or could result
in water being ingested by the engine
through the air intake, causing severe
internal engine damage. Any such dam-
age is not covered by the Mer-
cedes-Benz Limited Warranty.
Warning!
G
Always fasten items being carried as secure-
ly as possible.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown
around inside the vehicle, and cause injury
to vehicle occupants unless the items are
securely fastened in the vehicle.
The trunk is the preferred place to carry ob-
jects.
Warning!
G
Please do not forget that your primary re-
sponsibility is to drive the vehicle safely.
Only operate the COMAND (Cockpit Man-
agement and Data System), radio or tele-
phone
1 if road, weather, and traffic
conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your vehicle is
covering a distance of approximately
44 feet (approximately 13.5 m) every sec-
ond.
1Observe all legal requirements.
Page 223 of 376

223 Operation
Driving instructions
Telephones and two-way radios
Radio transmitters, such as a portable tele-
phone or a citizens band unit should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
Refer to the radio transmitter operation in-
structions regarding use of an external an-
tenna.
Catalytic converter
Your Mercedes-Benz is equipped with
monolithic type catalytic converters, an
important element in conjunction with the
oxygen sensors to achieve substantial con-
trol of the pollutants in the exhaust emis-
sions. Keep your vehicle in proper
operating condition by following our rec-
ommended maintenance instructions as
outlined in your Service Booklet.
Warning!
G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or
personal injury.
!To prevent damage to the catalytic con-
verters, only use premium unleaded
gasoline in this vehicle.
Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel
may reach the catalytic converter caus-
ing it to overheat, which could start a
fire.
Warning!
G
As with any vehicle, do not idle, park or op-
erate this vehicle in areas where combusti-
ble materials such as grass, hay or leaves
can come into contact with the hot exhaust
system, as these materials could be ignited
and cause a vehicle fire.
Page 229 of 376

229 Operation
Engine compartment
You can check the engine oil level on the
multifunction display.
Turn the key in the starter switch to
position2.
The standard display (
page 110) should
appear in the multifunction display fields.
Press button
k
or
j
on the
steering wheel until the following mes-
sage is seen in the right display field:
Measurement correct only if veh.
levelAfter about three seconds this mes-
sage is displayed:
Engine oil level –
Measuring now!
One of the following messages will sub-
sequently appear in the indicator:
Engine oil level OK
Engine oil add 1.0 qt (1.0 li-
ter)!
Engine oil add 1.5 qt (1.5 li-
ters)!
Engine oil add 2.0 qt (2.0 li-
ters)!
Adding engine oil
1Filler neck
Unscrew the cap from the filler neck1.
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 the cap back on the filler neck. !Excessive 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.
Page 230 of 376

230 OperationEngine compartmentOther display messages
If there is excessive engine oil with the en-
gine at normal operating temperature, the
following message will appear: Engine oil level – Reduce oil level!
Have excess oil siphoned.
If the key is not turned to position2 in the
starter switch:
Engine oil level – Switch on ignition!
Switch on the ignition.
If you see the message:
Observe waiting time
Wait five minutes before repeating
check procedure. If you see the message:
Engine oil level – Not while engine on
Turn off the engine. If engine is at nor-
mal operating temperature, wait five
minutes before checking oil. If the en-
gine is not yet at normal operating tem-
perature, you must wait 30 minutes
before checking oil.
More information on engine oil can be
found in the “Technical data” section
(
page 343).
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 Center
check the automatic transmission.
Oil level in the ABC system
The oil level in the ABC system does not
need to be checked. If there is visible oil
loss or if malfunction messages appear in
the display, have an authorized
Mercedes-Benz Center check the ABC
system.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.
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
Page 270 of 376
270 Practical hintsWhat to do if …F
Chip card!
Do not forget!
This display appears (for a maximum
of 60 seconds) if the driver’s door is
opened with the engine shut off and
no key in the starter switch.
Message is only a reminder.
Insert key in the starter switch.
Take the KEYLESS-GO* card with you when
leaving the vehicle.
ì
Function
not available!
This display appears if button
ì
or
í
on the multifunction steer-
ing wheel is pressed and the vehicle
is not equipped with a telephone.
Left display
Right display
Possible cause
Possible solution
Page 280 of 376
280 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
:
Engine oil level
Check level!
The engine oil level is too low.
Check the engine oil level (
page 228) and
add oil as required.
Engine oil level
Reduce oil level!
You have added too much engine oil.
There is a risk of damaging the en-
gine or the catalytic converter.
Have oil siphoned. Observe all legal require-
ments with respect to its disposal.
Engine oil
Visit workshop!
The engine oil has dropped to a crit-
ical level.
There is water in the oil.
Check the engine oil level (
page 228) and
add oil as required.
If you must add engine oil frequently, have
the engine checked for possible leaks.
Have the oil checked.
Engine oil level
Visit workshop!
The measuring system is malfunc-
tioning.
Have the measuring system checked by an
authorized Mercedes-Benz Center.