251 Controls in detail
Useful features
Power outlet in trunk
1Power outlet
Heated steering wheel (Canada only)
The steering wheel heating warms up the
leather area of the steering wheel.
The stalk is on the lower left-hand side of
the steering wheel.
1Switching on
2Switching off
3Indicator lampSwitching on
Switch on the ignition (page 38).
Turn switch at the tip of stalk in direc-
tion of arrow1.
The steering wheel is heated. Indicator
lamp3 comes on.
iThe power outlet can be used to accommo-
date 12-V DC electrical accessories (e.g. air
pump, auxiliary lamps) up to a maximum 180 W.
iThe steering wheel heating is temporarily
suspended while indicator lamp3 remains on
when
the temperature of the vehicle interior is
above 86°F (30°C)
the temperature of the steering wheel is
above 95°F (35°C)
When these conditions do not apply anymore,
steering wheel heating continues.
252 Controls in detail
Useful features
Switching off
Turn switch at the tip of stalk in direc-
tion of arrow2.
The heated steering wheel is switched
off. Indicator lamp3 goes out.
For information on steering wheel, see
“Multifunction steering wheel”
(
page 140).
Floormats
1Retainer pins
2Eyelets
Removing
Pull floormats off of retainer pins1.
Remove the floormats.
Installing
Lay down the floormat.
Press the floormat eyelets2 onto re-
tainer pins1.
iIndicator lamp3 flashes or goes out
in case of power surge or undervoltage
in case of a steering wheel heating malfunc-
tion
iThe steering wheel heating switches off au-
tomatically when you remove the SmartKey from
the starter switch or, on vehicles with
KEYLESS-GO*, when you switch off the ignition
(
page 61) and open the driver’s door.
Warning!G
Whenever you are using floormats, make
sure there is enough clearance and that the
floormats are securely fastened.
Floormats should always be securely fas-
tened using eyelets2 and retainer pins1.
Before driving off, check that the floormats
are securely in place and adjust them if nec-
essary. A loose floormat could slip and
hinder proper functioning of the pedals.
Do not place several floormats on top of
each other as this may impair pedal
movement.
iTo install or remove the floormat more easi-
ly, move the driver’s seat or front passenger seat
as far to the rear as possible (
page 42).
253 Controls in detail
Useful features
Telephone*
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.
The external antenna must be approved by
Mercedes-Benz. Please contact an autho-
rized Mercedes-Benz Center for informa-
tion on the installation of an approved
external antenna. Refer to the radio trans-
mitter operation instructions regarding use
of an external antenna.When the mobile phone is inserted in the
cradle, you can operate the telephone us-
ing the following devices:
mobile phone keypad
COMAND (see separate operating in-
structions)
buttonss andt on the multi-
function steering wheel
Voice Control* (see separate operating
instructions)
See also separate operating manual for in-
structions on how to use the mobile phone.
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 serious
personal injury.
Warning!G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his/her primary focus when driving. For
your safety and the safety of others, we rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
mobile telephone while driving a vehicle.
Only operate the COMAND (Cockpit Man-
agement and Data System)
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 44 feet (approximate-
ly 14 m) every second.
1Observe all legal requirements.
iVarious mobile phone cradles can be in-
stalled in the cockpit. These mobile phone cra-
dles can be obtained from an authorized
Mercedes-Benz Center.
The functions and services available to you while
using the mobile phone depend on your service
provider and the type of mobile phone you are
using.
254 Controls in detail
Useful features
The cradle is located in the center armrest.
Open the telephone compartment un-
der center armrest (
page 243).
Inserting mobile phone in mobile phone
cradle
Once the mobile phone has been inserted
in the mobile phone cradle, calls can only
be made via the Voice Control*.
If applicable, remove the cover for the
external antenna connection from the
back of the mobile phone and store it in
a safe place. Be sure to comply with the
mobile phone’s operating instructions,
as well.
Example illustration
1Insert the mobile phone
2Connector contact
3Mobile phone cradle
Slide the lower end of the mobile phone
into connector contact 2 on
cradle3.
Push the top of the mobile phone in di-
rection of arrow 1, until the lug on the
mobile phone release button engages.
The mobile phone is connected to the
network via the external antenna. The mobile phone is linked to the
hands-free device and the multifunc-
tion steering wheel.
The battery is charged depending on its
charge status and the position of the
SmartKey in the starter switch. The
charge procedure will be indicated in
the mobile phone’s display.
You can place or receive phone calls. You
can control other functions of the mobile
phone via the control system
(
page 166), COMAND or Voice Control*
(see separate operating instructions).
!Do not try to remove the mobile phone along
with the cradle. You could otherwise damage the
mobile phone cradle.
iWhen you take the SmartKey or SmartKey
with KEYLESS-GO* out of the starter switch, the
mobile phone remains switched on for approxi-
mately 10 minutes. If you place or receive a call
during this time, the mobile phone switches off
10 minutes after the call has been completed.
256 Controls in detail
Useful features
Tele Aid
Shortly after the completion of your Tele
Aid acquaintance call, you will receive a
user ID and password. By visiting
www.mbusa.com and selecting “Tele Aid”
(USA only), you will have access to account
information, remote door unlock and
more.The Tele Aid system
(Tele
matic Alarm Identification on
D
emand)
The Tele Aid system consists of three
types of response:
automatic and manual emergency
roadside assistance
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 COMAND System or on the multi-
function steering wheel. To raise, turn the
rotary volume control on COMAND System
clockwise or press buttonæ on the
multifunction steering wheel. To lower,
turn the rotary volume control on
COMAND System control counterclock-
wise or press buttonç on the multi-
function steering wheel.
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.
!The initial activation of the Tele Aid system
may only be performed by completing the sub-
scriber agreement and placing an acquaintance
call using button¡. Failure to complete ei-
ther of these steps will result in a system that is
not activated.
If you have any questions regarding activation,
please call the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada).
iThe SOS button is located in the overhead
control panel (
page 258).
The Roadside Assistance button• and the
Information button¡ are located below the
center armrest cover (
page 243).
261 Controls in detail
Useful features
Call priority
If other service calls such as a Roadside
Assistance call or Information call are
active, an Emergency call is still possible.
In this case, the Emergency call will take
priority and override all other active calls.Remote door unlock
In case you have locked your vehicle unin-
tentionally (e.g. SmartKey inside vehicle),
and the reserve SmartKey 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 pull the
tailgate recessed handle for minimum
of 20 seconds until the SOS button is
flashing.
The message
Connecting Call ap-
pears in the multifunction 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 in the Information
button
¡ is flashing continuously and there
was no voice connection to the Response Center
established, then the Tele Aid system could not
initiate an Information call (e.g. the relevant cel-
lular phone network is not available). The mes-
sage
Call Failed appears in the
multifunction display.
Information calls can be terminated using
the
t button on the multifunction steering
wheel or the END Button on the COMAND Sys-
tem.
!If the indicator lamps do not start flashing
after pressing one of the buttons or remain illu-
minated (in red) at any time, the Tele Aid system
has detected a malfunction or the service is not
currently active, and may not initiate a call. Con-
tact your authorized Mercedes-Benz Center and
have the system checked or contact the Re-
sponse Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada) as soon as pos-
sible.
iThe indicator lamp in the respective button
flashes until the call is concluded. Emergency
calls can only be terminated by a Response Cen-
ter or Customer Assistance Center representa-
tive, whereas Roadside Assistance and
Information calls can also be terminated by
pressing buttont on the multifunction steer-
ing wheel or using the END button on the
COMAND System.
!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 Mercedes-Benz
Customer Assistance at 1-800-FOR-MERCedes
(1-800-367-6372) in the USA or Customer Ser-
vice at 1-800-387-0100 in Canada.
272 Operation
Driving instructions
Power assistanceBrakes
To 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.
Warning!G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle.
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.
!Because the ESP® operates automatically,
the engine and ignition must be shut off
(SmartKey in starter switch position0 or1 or
KEYLESS-GO* start/stop button in position0
or1) when testing the brakes on a brake test dy-
namometer and such testing should be no longer
than 10 seconds.
Active braking action through ESP
® may other-
wise seriously damage the brake system which is
not covered by the Mercedes-Benz Limited War-
ranty.
278 Operation
Driving instructions
For information on how to identify the tire
speed rating on a tire’s sidewall, see “Tire
size designation, load and speed rating”
(
page 314).
If you are uncertain about the correct read-
ing of the information given on a tire’s side-
wall, any authorized Mercedes-Benz
Center will be glad to assist you.
Winter driving instructions
The most important rule for slippery or icy
roads is to drive sensibly and to avoid
abrupt acceleration, braking and steering
maneuvers. Do not use the cruise control
system under such conditions.
When the vehicle is in danger of skidding,
move gear selector lever to positionN. Try
to keep the vehicle under control by cor-
rective steering action.Road salts and chemicals can adversely
affect braking efficiency. Increased pedal
force may become necessary to produce
the normal braking effect.
Depressing the brake pedal periodically
when traveling at length on salt-strewn
roads can bring road-salt-impaired braking
efficiency back to normal.
If the vehicle is parked after being driven
on salt-treated roads, the braking efficien-
cy should be tested as soon as possible
after driving is resumed.
iFor information on speed rating for winter
tires, see “Winter driving” (
page 328).
For additional general information on tire speed
markings on tire sidewall, see “Tire speed rating”
(
page 316).
iFor more information on driving with snow
chains, see “Snow chains” (
page 329).
Warning!G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of control loss.