
Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible.
Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 31). Important safety notes
You will find an illustration of the instrument
cluster in the "At a glance" section
(Y page 35). G
WARNING
A driver's attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver
when traffic and road conditions permit
it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h ), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second. G
WARNING
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see
information about your driving conditions,
such as
R speed
R outside temperature
R warning/indicator lamps R
malfunction/warning messages
R failure of any systems
Driving characteristics may be impaired.
If
you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible. G
WARNING
HYBRID vehicles: It is imperative that you read
the HYBRID Supplemental Operating
Instructions
included in your vehicle literature
portfolio. You may otherwise not receive all
necessary safety information and warning for
the operation of your vehicle. G
WARNING
Malfunction and warning messages are only
indicated for certain systems and are
intentionally not very detailed. The
malfunction and warning messages are
simply a reminder with respect to the
operation of certain systems. They do not
replace the owner's and/or driver's
responsibility to maintain the vehicle's
operating safety. Have all required
maintenance
and safety checks performed on
the vehicle. Bring the vehicle to an authorized
Mercedes-Benz Center to address the
malfunction and warning messages. Displays and operation
Coolant temperature display
G
WARNING
Driving when your engine is overheated can
cause
some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the 372
Displays and operation
On-board computer and displays

Display messages Possible causes/consequences and
M SolutionsIf the display message continues to be displayed:
X
Drive on carefully.
X Visit a qualified specialist workshop. !÷
Inoperative See
Oper. Manual G
Risk of accident
ABS, ESP ®
, BAS, PRE-SAFE ®
, the HOLD function and hill start
assist are unavailable due to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
The $ (USA only)/ J (Canada only), ÷, å
and ! warning lamps in the instrument cluster also light up.
The
brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST 20
is deactivated.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. ÷
Currently
Unavailable See
Oper. Manual G
Risk of accident
ESP ®
,
BAS, PRE-SAFE ®
, the HOLD function and hill start assist are
temporarily unavailable.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the ÷ and å warning lamps light up in the
instrument cluster.
The self-diagnosis function might not be complete, for example.
ATTENTION ASSIST 20
is deactivated.
The brake system continues to function normally, but without the
functions listed above.
X Carefully drive a suitable distance making slight steering
movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. 20
Not available on hybrid vehicles.390
Display messages
On-board computer and displays

Display messages Possible causes/consequences and
M SolutionsG
Risk of accident
If the display message is shown and the ÷ warning lamp flashes
at the same time, the Electronic Traction System is deactivated.
Otherwise, the brakes on the drive wheels could overheat.
X Let the brakes cool down until the display message disappears
and the ÷ warning lamp goes out.
The Electronic Traction System is activated again. ÷
Inoperative See
Oper. Manual G
Risk of accident
ESP ®
,
BAS, PRE-SAFE ®
, the HOLD function and hill start assist are
unavailable due to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the ÷ and å warning lamps light up in the
instrument cluster.
ATTENTION ASSIST 20
is deactivated.
The brake system continues to function normally, but without the
functions listed above.
X Drive on carefully.
X Visit a qualified specialist workshop. å
System Inoperative G
Risk of accident
ESP ®
,
BAS, PRE-SAFE ®
, the HOLD function and hill start assist are
unavailable due to a malfunction. BAS PLUS and PRE-SAFE ®
Brake
may also have failed. In addition, the ÷ and å warning
lamps light up in the instrument cluster.
ATTENTION ASSIST 20
is deactivated.
X Drive on carefully.
X Visit a qualified specialist workshop. 20
Not available on hybrid vehicles. Display messages
391
On-board computer and displays Z

Display messages Possible causes/consequences and
M SolutionsT!
÷
Inoperative See
Oper. Manual G
Risk of accident
EBD (electronic brake force distribution), ABS, ESP ®
, BAS, PRE-
SAFE ®
,
the HOLD function and hill start assist are unavailable due
to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the ÷, å and ! warning lamps light up in
the instrument cluster and a warning tone sounds.
ATTENTION ASSIST 20
is deactivated.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. #
Check Brake Pad
Wear The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop. F(USA
only)!(Canada
only)
Please Release
Parking Brake The red
F (USA only)/ ! (Canada only) indicator lamp
flashes and a warning tone sounds.
You are driving with the electric parking brake applied.
X Release the electric parking brake.
or
X Pull away carefully ( Y page 324). The red
F (USA only)/ ! (Canada only) indicator lamp
flashes and a warning tone sounds.
You are making an emergency stop using the electric parking
brake ( Y page 324).
X After the emergency stop: release the electric parking brake
lever. 20
Not available on hybrid vehicles.392
Display messages
On-board computer and displays

Display messages Possible causes/consequences and
M Solutionsb
Please Switch Off
Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to $ or c.
or
X If the rear fog lamp is switched on: press the light switch in to
the stop. Adaptive High-beam
Assist inoperative Adaptive Highbeam Assist is defective.
X
Visit a qualified specialist workshop. Engine
Display messages Possible causes/consequences and
M Solutions+
Check Coolant
Level See Oper.
Manual The coolant level is too low.
X
Add coolant, observing the warning notes when doing so
(Y page 460).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. G
WARNING
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! The
coolant level is too low. Avoid making long journeys with too little coolant in the cooling
system. The engine will otherwise be damaged.
The display messages and the corresponding symbol that indicate that the coolant level is
too low must not be ignored. 404
Display messages
On-board computer and displays

To adjust the volume during an mbrace call,
proceed as follows:
X
Press the W or X button on the
multifunction steering wheel.
or
X Use the H volume controller of
COMAND (Y page 119).
You can find further information and a
description of all available features under
"Owners Online" at http://
www.mbusa.com 24
.
System self-test After you have switched on the ignition, the
system carries out a self-diagnosis.
G
WARNING
A malfunction in the system has been
detected if one of the following conditions
occurs:
R the indicator lamp in the SOS button does
not light up during the system self-
diagnosis.
R the indicator lamp in the º Roadside
Assistance button does not light up during
the system self-diagnosis.
R The
indicator lamp in the E information
button does not light up during self-
diagnosis of the system.
R the indicator lamp in the SOS button,
º Roadside Assistance button or E
information button continues to be lit red
after the system self-diagnosis.
R The Tele Aid Inoperative or Tele Aid
Not Activated message appears in the
multifunction display after the system self-
test.
If a malfunction is indicated as outlined above,
the system may not operate as expected. In
the event of an emergency, assistance must
be summoned by other means. Have the system checked at the nearest
authorized Mercedes-Benz Center or contact
the following service hotlines:
R
USA: Response Center under
888-990-9007
R Canada: Customer Service at
1-888-923-8367
Emergency call Important safety notes
!
A license agreement must exist in order
to
activate the mbrace service. Ensure that
your system is activated and ready for use,
and press the E MB Info call button to
register. If any of the steps mentioned is
not carried out, the system may not be
activated.
If you have questions about the activation,
contact one of the following telephone
assistance services:
R USA: Mercedes-Benz Customer
Assistance Center under
1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
An emergency call is dialed automatically if
an air bag or Emergency Tensioning Device is
triggered.
i An mbrace emergency call that has been
initiated automatically cannot be
terminated by the customer.
An emergency call can also be initiated
manually.
As soon as the emergency call has been
initiated, the indicator lamp in the SOS button
flashes. The Connecting Call message
appears on the multifunction display.
The COMAND display shows the Emergency
Call Activated message. The audio output
is muted.
24 USA only.444
Features
Stowing and features