189 Controls in detail
Sliding/pop-up roof*
Opening (Summer opening feature)
Press and hold buttonŒ after un-
locking the vehicle.
The windows and sliding/pop-up roof
begin to open after approximately one
second.
Release transmit button to interrupt
procedure.Closing (Convenience feature)
Press and hold button‹ after lock-
ing the vehicle.
The windows and sliding/pop-up roof
begin to close after approximately one
second.
Release transmit button to interrupt
procedure.
Ensure that all side windows and the slid-
ing/pop-up roof are properly closed before
leaving the vehicle.
Synchronizing the sliding/pop-up roof
The power sliding/pop-up roof must be re-
synchronized each time
after the battery has been disconnect-
ed
the sliding/pop-up roof has been
closed manually (
page 331)
the sliding/pop-up roof does not open
smoothly
a malfunction
Synchronizing
Turn the key in the starter switch to
position1 or2.
Press the switch in the "raise" direction
until the sliding/pop-up roof is fully
raised at the rear (
page 187).
Hold the switch for approximately one
second.
ProCarManuals.com
193 Controls in detail
Panorama sliding/pop-up roof*
Closing (Convenience feature)
Press and hold button‹ after lock-
ing the vehicle.
The windows and panorama slid-
ing/pop-up roof begin to close after
approximately one second.
Press and hold buttonŒ again.
The roller blinds close.
Release transmit button to interrupt
procedure.
Ensure that all side windows and the pan-
orama sliding/pop-up roof are properly
closed before leaving the vehicle.Synchronizing the panorama slid-
ing/pop-up roof
It is necessary to resynchronize the pan-
orama sliding/pop-up roof after:
voltage supply interruption due to a
disconnected or discharged battery
the roof has been closed manually
the roof has been opened with an
abrupt movement
a malfunction
Remove the fuse from the main fuse
box.
Replace the fuse in the main fuse box.
Turn the ignition on.
Press the switch in direction 3.
Wait until the panorama sliding/pop-up
roof is raised and then keep the switch
pressed for approximately 1 second.
Solar panel*
Combined with the panorama slid-
ing/pop-up roof a solar panel is available.
The solar cells convert natural light into
electrical energy. When the engine is
switched off, the energy generated auto-
matically switches on the ventilation fan.
The constant air flow creates a cooler tem-
perature for cars parked in the sunlight.
The air flow depends on the intensity of the
solar radiation. The ventilation starts 2
minutes after switching off the engine.
ProCarManuals.com
235 Controls in detail
Useful features
The Tele Aid system
(Tele
matic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response:
Automatic and manual emergency
Roadside Assistance and
Information
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged,
properly connected, not damaged and cel-
lular and GPS coverage is available.
The speaker volume of a Tele Aid call can
be adjusted when using the volume control
on the multifunction steering wheel. To
raise, press buttonæ and to lower,
press buttonç.
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.Shortly after the completion of your ac-
quaintance call, you will receive a user ID
and password via first call mail. By visiting
www.mbusa.com and selecting "Tele Aid"
(USA only), you will have access to account
information, remote door unlock, Info Ser-
vices
1 profile and more.System self-check
Initially, after turning the key in starter
switch to position2, malfunctions are de-
tected and indicated (the indicator lamps
in the SOS button, the Roadside Assis-
tance button• and the Information
button¡ stay on longer than
10 seconds or do not come on). The mes-
sage
TELE AID – VISIT WORKSHOP!
ap-
pears for approx. 10 seconds in the
multifunction display.
iThe SOS button is located above the in-
side rear view mirror.
The Roadside Assistance button•
and the Information button¡ are
located below the center armrest cov-
er.
1Available only with COMAND*
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266 OperationEngine compartmentBattery
Your vehicle is equipped with two batter-
ies:
Auxiliary battery (located in the engine
compartment).
Main battery (starter and electrical
consumers; located in the trunk).
These batteries should always be suffi-
ciently charged in order to achieve their
rated service life.
If you use your vehicle mostly for short dis-
tance trips, you will need to have the bat-
tery charge checked more frequently.
When replacing batteries, always use bat-
teries approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, consult an
authorized Mercedes-Benz Center about
steps you need to observe.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
G
Observe all safety instructions
and precautions when handling
automotive batteries.
A
Risk of explosion
D
Keep flames or sparks away
from battery. Do not smoke.
B
Battery acid is caustic. Do not
allow it to come into contact
with skin, eyes or clothing.
In case it does, immediately
flush affected area with clear
water and seek medical help if
necessary.
E
Wear eye protection.
C
Keep children away.
F
Follow the instructions in this
Operator's Manual.
ProCarManuals.com
273 Operation
Winter driving
Winter driving
Before the onset of winter, have your vehi-
cle winterized at an authorized
Mercedes-Benz Center. This service in-
cludes:
Check of anticorrosion and antifreeze
concentration.
Addition of cleaning concentrate to the
water of the windshield and headlamp
cleaning system. Add MB Concentrate
"S" to a premixed windshield washer
solvent / antifreeze which is formulated
for below freezing temperatures
(page 371).
Battery test. Battery capacity drops
with decreasing ambient temperature.
A well charged battery helps to ensure
that the engine can be started, even at
low ambient temperatures.
Tire change. We recommend M+S rat-
ed radial-ply tires on all four wheels for
the winter season.
Winter tires
Always use winter tires at temperatures
below 39°F (4°C) and whenever wintry
road conditions prevail. Use of winter tires
is the only way to achieve the maximum ef-
fectiveness of the ABS and the ESP in win-
ter operation.
For safe handling, ensure that all mounted
winter tires are of the same make and have
the same tread design.Always observe the speed rating of the
winter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your ve-
hicle, you must place a notice to this effect
where it will be seen by the driver. Such no-
tices are available from your tire dealer or
from any authorized Mercedes-Benz Cen-
ter.Warning!
G
Winter tires having a tread depth under
0.16 in (4 mm) must be replaced. They are
no longer suitable for winter operation.
Warning!
G
If you use your spare tire when winter tires
are fitted on the other wheels, be aware that
the difference in tire characteristics may
very well impair turning stability and that
overall driving stability may be reduced.
Adapt your driving style to this.
Have the spare tire replaced with a winter
tire at the nearest authorized
Mercedes-Benz Center.
ProCarManuals.com
276 OperationMaintenance
The service indicator is cleared and the
standard display appears in the multi-
function display.
Service term exceeded
If you have exceeded the suggested ser-
vice term, you will see the following mes-
sage in the multifunction display:Service A exceeded by XXXXX miles (km)
Service A exceeded by XXX days
Service A exceeded by X day An authorized Mercedes-Benz Center will
reset the service indicator following a com-
pleted service.
Calling up the service indicator
Switch the ignition on.
The standard display of the control sys-
tem appears (
page 121).
Press buttonk orj on the mul-
tifunction steering wheel until the
FSS PLUS indicator appears in the mul-
tifunction display.
Resetting the service indicator
In the event that a service on your vehicle
is not carried out by an authorized
Mercedes-Benz Center, you can reset the
service indicator yourself.
Switch the ignition on.
The standard display of the control sys-
tem appears (
page 121).
Press buttonk orj on the mul-
tifunction steering wheel until the
FSS PLUS indicator appears in the mul-
tifunction display.
Press the reset knob (
page 22) for
about five seconds.
iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the service indica-
tor. To arrive at the true service dead-
line, you will need to subtract these
days from the days shown in the ser-
vice indicator.
Do not confuse the service indicator
with the engine oil level indicator :.
ProCarManuals.com
303 Practical hints
What to do if …
G
Display defective
The instrument cluster display is malfunc-
tioning.
Continue driving with added caution.
Visit an authorized Mercedes-Benz
Center as soon as possible.
G
Display defective
Visit workshop!
The displays for several systems have mal-
functioned. Some systems themselves may
also have malfunctioned.
Have the electronic systems
checked by an authorized
Mercedes-Benz Center.
L
Visit workshop!
One or more main functions of the Tele Aid
system are malfunctioning.
Have the Tele Aid system checked by
an authorized Mercedes-Benz Cen-
ter.
#
Malfunction
Electrical consumers
switched off
The consumer battery has insufficient volt-
age and can no longer supply the conve-
nience functions such as seat ventilation*.
The electrical consumers will come back
online as soon as on-board voltage is
sufficient.
#
Battery/Alternator
Stop vehicle!
The battery is malfunctioning.
The SBC brake system requires electrical
energy and therefore has only limited oper-
ation. Considerably greater brake pedal
force is required and the stopping distance
is increased.
Stop the vehicle as soon as it is safe
to do so. Adjust driving to be consis-
tent with reduced braking respon-
siveness.
Notify an authorized Mercedes-Benz
Center.
#
Undervoltage
Charge battery
The battery has insufficient voltage.
Start the engine (
page 43).
Display
Possible cause
Suggested solution
ProCarManuals.com
304 Practical hintsWhat to do if …#
Undervoltage
Switch off
consumers
The battery has insufficient voltage.
Turn off unnecessary electrical con-
sumers.
–
Battery/Alternator
Visit workshop!
The battery was charged with a battery
charger or jump started.
The battery is no longer charging. Possible
causes:
Alternator malfunctioning
Broken poly-V-belt
Do not forget that the brake system re-
quires electrical energy and may be operat-
ing with restricted capability. Considerably
greater brake pedal force is required and
the stopping distance is increased.
Have the battery checked at a ser-
vice station.
Stop immediately and check the
poly-V-belt.
If it is broken:
Do not continue to drive. Notify
an authorized Mercedes-Benz
Center.
If it is in order:
Drive immediately to the nearest
authorized Mercedes-Benz Cen-
ter. Adjust driving to be consis-
tent with reduced braking
responsiveness.
Display
Possible cause
Suggested solution
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