447 Controls in detail
Loading and storing
Loading and storing
Roof rack*
Flip the covers upward.
Only attach the roof-rack system to the
anchorage points under the covers.
Observe manufacturer’s instructions
for installation.
Loading instructions
The total load weight including vehicle oc-
cupants and luggage/cargo should not ex-
ceed the load limit or vehicle capacity
weight as indicated on the corresponding
placard located on the driver’s door B-pillar
(page 503).
Warning!
G
Only use roof racks approved by
Mercedes-Benz for your vehicle model to
avoid damage to the vehicle.
Follow the manufacturer’s installation
instructions. Otherwise, an improperly
attached roof rack system or its load could
become detached from the vehicle.
Do not exceed the maximum roof load of
220 lb (100 kg).
Take into consideration that when the roof
rack is loaded, the handling characteristics
are different from those when operating the
vehicles without the roof rack loaded.
!
Load the roof rack in such a way that the ve-
hicle cannot be damaged while driving.
Make sure
you can fully raise tilt/sliding sunroof or the
panorama roof with tilt/sliding panel*
you can fully open the trunk
Warning!
G
Always fasten items being carried as secure-
ly as possible using cargo tie-down hooks
and fastening materials appropriate for the
weight and size of the load.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown
around inside the vehicle and can cause in-
jury to vehicle occupants unless the items
are securely fastened in the vehicle.
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care
when transporting cargo. Put luggage or car-
go in the trunk if possible.
465 Controls in detail
Useful features
Roadside Assistance button• and
Information button¡
The Roadside Assistance button• and
the Information button¡ are located in
the storage compartment below the front
armrest (
page 448).
1Information button¡
2Roadside Assistance button•Roadside Assistance button•
Press and hold Roadside Assistance
button • (for longer than
2 seconds).
A call to a Mercedes-Benz Roadside As-
sistance dispatcher will be initiated.
The button will flash while the call is in
progress. The message:
“Connecting call” appears in the
multifunction display
“Roadside Assistance Activated”
appears in the COMAND display
and the audio system is muted.
When the connection is established, the
message:
“Call connected” appears in the multi-
function display
“Roadside Assistance Activated”
appears in the COMAND display The Tele Aid system will transmit data gen-
erating the vehicle identification number,
model, color and location (subject to avail-
ability of cellular and GPS signals).
A voice connection between the Roadside
Assistance dispatcher and the occupants
of the vehicle will be established.
Describe the nature of the need for as-
sistance.
The Mercedes-Benz Roadside Assistance
dispatcher will either dispatch a qualified
Mercedes-Benz technician or arrange to
tow your vehicle to the nearest authorized
Mercedes-Benz Center. For services such
as labor and/or towing, charges may ap-
ply. Refer to the Roadside Assistance Man-
ual for more information.
These programs are only available in the
USA:
Sign and Drive services: Services such
as jump start, a few gallons of fuel or
the replacement of a flat tire with the
vehicle spare tire are obtainable.
vehicle’s approximate location if they
receive an automatic SOS signal and cannot
make voice contact with the vehicle occu-
pants.
466 Controls in detailUseful features
Information button¡
Press and hold Information button
¡ (for longer than 2 seconds).
A call to the Customer Assistance Cen-
ter will be initiated. The button will
flash while the call is in progress. The
message:
“Connecting call” appears in the
multifunction display
“Information Call Activated” ap-
pears in the COMAND display
and the audio system is muted.
When the connection is established, the
message:
“Call connected” appears in the multi-
function display
“Information Call Activated” appears in
the COMAND display
The Tele Aid system will transmit data gen-
erating the vehicle identification number,
model, color and location (subject to avail-
ability of cellular and GPS signals).A voice connection between the Customer
Assistance Center representative and the
occupants of the vehicle will be estab-
lished. Information regarding the operation
of your vehicle, the nearest authorized
Mercedes-Benz Center or Mercedes-Benz
USA products and services is available to
you.
For more details concerning the Tele Aid
system, please visit www.mbusa.com and
use your ID and password (sent to you sep-
arately) to learn more (USA only).
i
The indicator lamp in the Roadside Assis-
tance button• remains illuminated in red for
approximately 10 seconds during the system
self-check after switching on the ignition (togeth-
er with the SOS button and the Information
button¡).
See system self-check (
page 462) if the indi-
cator lamp does not come on in red or stays on
longer than approximately 10 seconds.
If the indicator lamp in the Roadside Assistance
button• is flashing continuously and no
voice connection to the Response Center was
established, the Tele Aid system could not ini-
tiate a Roadside Assistance call (e.g. the relevant
mobile phone network is not available). The mes-
sage:
“Call failed” appears in the multifunction dis-
play for approximately 10 seconds
“Call could not be connected!” appears in
the COMAND display. Confirm the message
pressing
n
(page 82).
Roadside Assistance calls can be terminated us-
ing button t on the multifunction steering
wheel or COMAND (page 115).
i
The indicator lamp on the Information
button¡ remains illuminated in red for ap-
proximately 10 seconds during the system
self-check after switching on the ignition (togeth-
er with the SOS button and the Roadside Assis-
tance button•).
See system self-check (
page 462) if the indi-
cator lamp does not come on in red or stays on
longer than approximately 10 seconds.
If the indicator lamp in the Information
button¡ is flashing continuously and no
voice connection to the Response Center was
established, then the Tele Aid system could not
initiate an Information call (e.g. the relevant
480 OperationDriving instructionsBrakesTo help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.
If your brake system is normally only sub-
jected to moderate loads, you should occa-
sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads.
Refer to the description of the Brake Assist
System (BAS) (
page 71).If the parking brake is released and the
brake warning lamp in the instrument clus-
ter stays on and there is no audible warn-
ing (EBP), the brake fluid level in the
reservoir is too low.
Brake pad wear or a leak in the system may
be the reason for low brake fluid in the res-
ervoir.
Have the brake system inspected immedi-
ately. Contact an authorized
Mercedes-Benz Center.
All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
Mercedes-Benz Center.
Only install brake pads and brake fluid
recommended by Mercedes-Benz.
Warning!
G
After driving in heavy rain for some time
without applying the brakes or through wa-
ter deep enough to wet brake components,
the first braking action may be somewhat
reduced and increased pedal pressure may
be necessary to obtain expected braking ef-
fect. Maintain a safe distance from vehicles
in front.
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads.
It can also result in the brakes overheating,
thereby significantly reducing their effec-
tiveness. It may not be possible to stop the
vehicle in sufficient time to avoid an acci-
dent.
Warning!
G
Make sure not to endanger any other road
users when carrying out these braking ma-
neuvers.
500 OperationTires and wheelsSee an authorized Mercedes-Benz Center
for information on tested and
recommended rims and tires for summer
and winter operation. They can also offer
advice concerning tire service and
purchase.
Important guidelines
Only use sets of tires and rims of the
same type and make.
Tires must be of the correct size for the
rim.
Break in new tires for approximately
60 miles (100 km) at moderate
speeds.
Regularly check the tires and rims for
damage. Dented or bent rims can
cause tire inflation pressure loss and
damage to the tire beads.
If vehicle is heavily loaded, check tire
inflation pressure and correct as
required.
Do not allow your tires to wear down
too far. Adhesion properties on wet
roads are sharply reduced at tread
depths under
1/8in (3 mm).
When replacing individual tires, you
should mount new tires on the front
wheels first (on vehicles with
same-sized wheels all around).
Warning!
G
Replace rims or tires with the same designa-
tion, manufacturer and type as shown on the
original part. See an authorized
Mercedes-Benz Center for further informa-
tion. If incorrectly sized rims and tires are
mounted:
The wheel brakes or suspension
components can be damaged.
The operating clearance of the wheels
and the tires may no longer be correct.
Warning!
G
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
When replacing rims, only use Genuine
Mercedes-Benz wheel bolts specified for the
particular rim type. Failure to do so can
result in the bolts loosening and possibly an
accident.
Retreaded tires are not tested or recom-
mended by Mercedes-Benz, since previous
damage cannot always be recognized on re-
treads. The operating safety of the vehicle
cannot be assured when such tires are used.
532 OperationMaintenanceWe strongly recommend that you have
your vehicle serviced by an authorized
Mercedes-Benz Center, in accordance with
the Maintenance Booklet at the times
called for by the maintenance service indi-
cator.
Failure to have the vehicle maintained in
accordance with the Maintenance Booklet
and maintenance service indicator at the
designated times /mileage will result in
vehicle damage not covered by the
Mercedes-Benz Limited Warranty.
Maintenance service indicator message
The maintenance service indicator mes-
sage will notify you when your next mainte-
nance service is due.Starting approximately 1 month before
your next maintenance service is due, one
of the following messages will appear in
the multifunction display while you are
driving or when you switch on the ignition
(example service A):
Next Service A due in XXX miles (km)
Next Service A due in XX days
Service A due
The maintenance services will be indicated
by showing a service type A through type H
in the multifunction display. Types A
through H are classified based on estimat-
ed time needed to perform the mainte-
nance service, ranging
from “Service A”
(approx. 1 hour)
to “Service H”
(approx. 8 hours)Refer to Maintenance Booklet for a listing
of maintenance services and intervals they
need to be performed at.
To clear the maintenance service
indicator message: Press L
(page 242).
i
Vehicles equipped with FSS PLUS (
Flexible
Service
System PLUS) only (Canada vehicles):
The interval between maintenance services de-
pends on your driving habits. A gentle driving
style, moderate engine speeds and the avoid-
ance of short-distance trips will lengthen the in-
terval between services.
635 Practical hints
Batteries
!
The consumer battery located in the trunk is
a valve-r
egulated l
ead a
cid (VRLA) battery, also
referred to as “fleece” battery. Such batteries do
not require topping-up of the electrolyte level.
VRLA batteries therefore do not have cell caps
and the battery cover is non-removable. Do not
attempt to open the consumer battery as other-
wise the battery will be damaged.
Even though VRLA batteries do not require top-
ping-up of the electrolyte level and cannot be
opened to check the electrolyte level, the bat-
tery condition must be checked periodically by
performing a battery conductance test. Refer to
Maintenance Booklet for battery condition test-
ing intervals.
As with any other battery, disconnect the con-
sumer battery if you do not intend to operate
your vehicle for an extended period of time to
prevent battery discharge or connect an acces-
sory battery charge unit expressly approved by
Mercedes-Benz for your vehicle model to main-
tain the battery charge. Contact an authorized
Mercedes-Benz Center for further information.
!
The factory-equipped VRLA battery is
leak-proofed. Only use a battery as replacement
that has the same security features and is of
identical size, voltage, and capacity as the facto-
ry-equipped battery.
The battery, the battery ventilation and the later-
al plug must always be securely installed when
the vehicle is in operation.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
Take care that you do not become statically
charged, e.g. by wearing synthetic clothing
or rubbing against textiles. For this reason,
you also should not pull or push the battery
over carpets or other synthetic materials.
Never touch the battery first. First touch the
outside body of the vehicle in order to re-
lease any possible electrostatic charges.
637 Practical hints
Batteries
Switching off vehicle’s internal electri-
cal functions
Shift the automatic transmission toP.
Turn off all electrical consumers.
Turn SmartKey in starter switch to po-
sition 0.
Turn SmartKey in starter switch to po-
sition 1.
Wait for 30 seconds.
The vehicle’s internal electrical func-
tions are switched off.
Turn SmartKey in starter switch to po-
sition 0.Disconnecting starter battery
Open the hood (
page 492).
Use a 10-mm open-end wrench to dis-
connect the battery negative lead.
Remove cover2 (
page 636) from
the positive terminal.
Disconnect the battery positive lead.
Removing starter battery
Pull out the battery ventilation hose
from the battery (depending on battery
arrangement in your vehicle model, the
ventilation hose is located either on the
left or right side of the battery).
Fold bar on starter battery up.
Take out the starter battery.
Charging battery
i
Vehicles with KEYLESS-GO: remove the
KEYLESS-GO button (
page 316) and use the
SmartKey with KEYLESS-GO like a normal
SmartKey.
!
Do not remove the SmartKey!
i
For your convenience, have the starter bat-
tery removed by a Mercedes-Benz Center.
Warning!
G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the bat-
tery in its installed position. Contact an au-
thorized Mercedes-Benz Center for
information and availability. Charge battery
in accordance with the separate instruc-
tions for the accessory battery charger.i
Have the batteries charged by a
Mercedes-Benz Center. If you charge the batter-
ies yourself, follow the operating instructions for
your charging device.