Display messages Possible causes/consequences and
0003 Solutions
Park Assist
Inoperative You have just carried out a large number of turning or parking
maneuvers.
Active Parking Assis
twill become available again after
approximately ten minutes (Y page 206).
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Switch off and restart the engine.
If the display message continues to be displayed:
X Visit a qualified specialist workshop. PARKTRONIC is defective.
X
Visit a qualified specialist workshop. Park Assist
Finished The vehicle is parked.
Awarning tone also sounds.
The display message disappears automatically. DISTRONIC PLUS Off DISTRONIC PLU
Shas been deactivated (Y page 186).
If it was deactivated automatically, a warning tone also sounds. DISTRONIC PLUS Now
Available DISTRONIC PLU
Sis operational againa fter having been
temporarily unavailable .You can now reactivate DISTRONIC PLUS
(Y page 186). DISTRONIC PLUS
Currently
Unavailable See
Operator's Manual DISTRONIC PLUS is temporarily inoperative. Possible causes are:
R
function is impaired due to heavy rain or snow.
R the sensors in the radiator grill and the bumper are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
Aw arning tone also sounds.
When the causes stated above no longer apply, the display
message disappears.
DISTRONIC is operational again.
If the display message does no tdisappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 175).
X Clean the sensors in the radiator grill and the bumper
(Y page 521).
X Restar tthe engine. 260
Display messagesOn-board computer and displays
Display messages Possible causes/consequences and
0003 Solutions
Tire Pressure
Monitor
Inoperative No
Wheel Sensors The wheels mounted do no
thave a suitable tire pressure sensor.
The tire pressure monito ris deactivated.
X Mount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving
for a few minutes. Check
Tires The tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
Aw
arning tone also sounds.
G WARNING
With tire pressures which are too low, there is a ris kofthe
following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 175).
X If there is a flat tire, inspect the tires (Y page 527).
X Check the tire pressure (Y page 552).
X If necessary, correct the tire pressure. Warning
Tire Malfunction The tire pressure in one or more tires has dropped suddenly. The
wheel position is shown in the multifunction display.
G WARNING
If you drive with a flat tire, there is a risk of the following hazards:
R A flat tire affects the ability to steer or brake the vehicle.
R You could lose control of the vehicle.
R Continued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 175).
X If there is a flat tire, inspect the tires (Y page 527). Display messages
263On-board computer and displays Z
Display messages Possible causes/consequences and
0003 Solutions
Correct
Tire Pressure The tire pressure is too low in at leas
tone of the tires, or the tire
pressure difference between the wheels is too great.
X Check the tire pressures at the next opportunity (Y page 552).
X If necessary, correct the tire pressure.
X Restart the tire pressure monitor (Y page 554).TirePress.
Sensor(s) Missing There is no signal from the tire pressure sensor of one or several
wheels
.The pressure of the affected tire is not displayed in the
multifunction display.
X Have the faulty tire pressure sensor replaced at a qualified
specialist workshop. Tire Press. Monitor
Currently
Unavailable Due to a source of radio interference, no signals can be received
from the wheel sensors. The tire pressure monitor is temporarily
malfunctioning.
X
Drive on.
The tire pressure monitor restarts automatically as soon as the
problem has been solved. 0017
Tire Pressure
Warning Tire
Failure The tire pressure in one or more tires has dropped suddenly.
Aw
arning tone also sounds.
G WARNING
If you drive with a flat tire, there is a ris kofthe following hazards:
R A flat tire affects the ability to steer or brake the vehicle.
R You could lose control of the vehicle.
R Continued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 175).
X If there is a flat tire, inspect the tires (Y page 527).264
Display messagesOn-board computer and displays
Engine
Problem Possible causes/consequences and
0003 Solutions
0013
The yellow Check
Engine warning lamp
lights up while the
engine is running.
There may be a malfunction, for example:
R
in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system
R in the fuel system
The emission limit values may be exceeded and the engin emay
be running in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop.
i In some states, you must immediately visit a qualified
specialist workshop as soon as the yellow Chec kEngine warning
lamp lights up .This is due to the legal requirements in effect in
these states. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving. 0014
The yellow reserve fuel
warning lamp lights up
while the engine is
running.
The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 0014
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the
0013
Check Engine warning
lamp may light up. The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X
Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist
workshop. 0011
The red coolant
warning lamp lights up
while the engine is
running and the coolant
temperature gauge is
at the start of the scale.
The temperature sensor for the coolant temperature gauge is
defective.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Secure the vehicle against rolling away (Y page 175).
X Consult a qualified specialist workshop. Warning and indicator lamps
277On-board computer and displays Z
Option 2: city list as selection list
COMAND either shows the selection list
automatically or you can call up the selection
list from the list with the character bar.
The example shows the selection list after the
city NEW YORK has been entered. The entry is
highlighted automatically.
X Confirm NEW YORK by pressing
0039the
COMAND controller.
The address entry menu appears. You can
now enter a street, for example. Observe the information on destination entry
(Y page 318). System settings
Your COMAND equipment
These operating instructions describe all the
standard and optional equipment for your
COMAND system, as available at the time of
going to print. Country-specific differences
are possible. Please note that your COMAND system may not be equipped with all the
features described. Display settings
Setting the brightness The brightness detected by the display light
sensor affects the setting options for this
function.
X
Press 000D.
X Select Settings by turning
003E0012003Fthe
COMAND controller and press 0039to
confirm.
X Select Display and press
0039to confirm.
X Select Brightness and press
0039to
confirm.
X Adjust the brightness by turning 003E0012003Fthe
COMAND controller and press 0039to
confirm.
Display design Your COMAND display features optimized
designs for operation during daytime and
night-time hours. You can set the design by
manually selecting day or night design or opt
for an automatic setting.
X
Press 000D.
X Select Settings by turning
003E0012003Fthe
COMAND controller and press 0039to
confirm. System settings
303COMAND Z
X
Select Display and press
0039to confirm.
X Select Day Mode ,
Night Mode or
Automatic by turning
003E0012003Fthe COMAND
controlle rand press 0039to confirm.
A dot indicates the current setting. Design Explanation
Day Mode The display is set
permanently to day
design.
Night Mode The display is set
permanently to night
design.
Automatic If the
Automatic setting
is selected, COMAND
evaluates the readings
from the automatic
vehicle light sensor and
automatically switches
between the display
designs. Time settings
General information If COMAND is equipped with a navigation
system and has GP
Sreception, COMAND
automatically sets the time and date. You can
also adjust the time yourself in 30-minute
increments, but the date cannot be changed.
i If you set the time in 30-minute
increments, any time zone settings and
settings for changing between summer and
standard time are lost. Switching between
summer and standard time (Y page 305).
i The following navigation system functions
require the time, time zone and summer/
standard time to be set correctly in order
to work properly:
R route guidance on routes with time-
dependen ttraffic guidance
R calculation of expected time of arrival i
With this function, you can set the time
for every display in the vehicle.
Setting the time X
Press 000D.
X Select Time by turning
003E0012003Fthe COMAND
controller and press 0039to confirm.
X Select Set Time and press
0039to confirm.
X Set the time by turning 003E0012003Fthe COMAND
controller and press 0039to confirm.
The time is accepted.
Setting the time/date format X
Press 000D.
X Select Time by turning
003E0012003Fthe COMAND
controller and press 0039to confirm.
X Select Format and press
0039to confirm.
The 0021symbols show the current settings.
X Set the format by turning 003E0012003Fthe
COMAND controller and press 0039to
confirm. Abbreviation Meaning
DD /
MM /
YY Day/Month/Year
(date format)
HH /MM Hours/Minutes
(time format)
You can set the 24-hour or the AM/PM
format.304
System settingsCOMAND
Cleaning wiper blades
G
WARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshield or wiper blades .There is a risk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
! Do not pull the wiper blade. Otherwise,
the wiper blade could be damaged.
! Do not clean wiper blades too often and
do not rub them too hard. Otherwise, the
graphite coating could be damaged. This
could cause wiper noise.
! Hold the wiper arm securely when folding
back. The windshield could be damaged if
the wiper arm smacks against it suddenly.
X Fold the windshield wiper arms away from
the windshield.
X Carefully clean the wiper blades with a
damp cloth.
X Fold the windshield wiper arms back again
before switching on the ignition.
Cleaning the exterior lighting !
Only use cleaning agents or cleaning
cloths which are suitable for plastic light
lenses. Unsuitable cleaning agents or
cleaning cloths could scratch or damage
the plastic light lenses.
X Cleant he plastic lenses of the exterior
lighting using a wet sponge and a mild
cleaning agent, e.g. Mercedes-Ben zcar
shampoo or cleaning cloths.
Mirror turn signals !
Only use cleaning agents or cleaning
cloths that are suitable for plastic lenses.
Unsuitable cleaning agents or cleaning
cloths could scratch or damage the plastic
lenses of the mirror tur nsignals. X
Clean the plasti clenses of the mirror turn
signals in the exterior mirror housing using
a wet sponge and mild cleaning agent, e.g.
Mercedes-Benzc ar shampoo or cleaning
cloths.
Cleaning the sensors !
If you clean the sensor swith a power
washer, make sure that you keep a
distance of at least 11. 8in(30 cm) between
the vehicle and the power washer nozzle.
Information about the correct distance is
available from the equipment
manufacturer. X
Clean sensors 0002of the driving systems
with water, car shampoo and a soft cloth.
Cleaning the rear view camera !
Do not clea nthe camera lens and the area
around the rear view camera with a power
washer. Care
521Maintenance and care Z
alternate tires and wheels allow the TPMS to
continue to function properly.
It is the driver's responsibility to set the tire
pressure to that recommended for cold tires
which is suitable for the operating situation
(Y page 547). Note that the correct tire
pressure for the curren toperating situation
must first be taught-in to the tire pressure
monitor. If there is a substantial loss of
pressure, the warning threshold for the
warning message is aligned to the reference
values taught-in .Restart the tire pressure
monitor after adjusting the pressure of the
cold tires (Y page 554). The current
pressures are saved as new reference values.
As a result, a warning message will appear if
the tire pressure drops significantly.
The tire pressure monitor does not warn you
of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
(Y page 547).
The tire pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tire is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a halt by braking carefully. Avoid
abrupt steering maneuvers.
If a tire pressure monitor is installed, the
vehicle's wheels have sensors that monitor
the tire pressures in all four tires. The tire
pressure monitor warns you if the pressure
drops in one or more of the tires. The tire
pressure monitor only functions if the correct
wheel electronics units are installed on each
wheel.
The tire pressure monitor has a yellow
warning lamp in the instrument cluster for
indicating pressure loss/malfunctions (USA)
or pressure loss (Canada). Whether the
warning lamp flashes or lights up indicates
whether a tire pressure is too low or the tire
pressure monitor is malfunctioning:
R if the warning lamp is lit continuously, the
tire pressure on one or more tires is significantly too low. The tire pressure
monitor is not malfunctioning.
R USA only: if the warning lamp flashes for
around a minute and then remains lit
constantly, the tire pressure monitor is
malfunctioning.
Information on tire pressures is displayed in
the multifunction display. After a few minutes
of driving, the current tire pressure of each
tire is shown in the multifunction display.
USA only: if there is a malfunction with the
tire pressure monitor it can take more than
ten minutes until the malfunction is shown by
the tire pressure warning lamp flashing for
approximately one minute and then lighting
up continuously. When the malfunction has
been rectified, the tire pressure warning lamp
goes out after a few minutes of driving.
The tire pressure values indicated by the on-
board computer may differ from those
measured at a gas station with a pressure
gauge. The tire pressures shown by the on-
board computer refer to those measured at
sea level. At high altitudes, the tire pressure
values indicated by a pressure gauge are
higher than those shown by the on-board
computer. In this case, do not reduce the tire
pressures.
The operation of the tire pressure monitor can
be affected by interference from radio
transmitting equipment (e.g. radio
headphones, two-way radios) that may be
being operated in or near the vehicle.
Checking the tire pressure
electronically X
Make sure that the SmartKey is in position
2 in the ignition lock (Y page 155).
X Press the 000Bor0017 button on the
steering wheel to select the Serv. menu.
X Press the 0009or000A button to select
Tire Pressure .
X Press the 000Fbutton.
The curren ttire pressure of each tire is
shown in the multifunction display. Tire pressure
553Wheels and tires Z