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To avoid possible injury to children sitting in
the rear seat, activate the override switch.
Activation of the override switch deactivates
the rear center console lighter.
If the engine is off and the cigarette lighter is
being used extensively, the vehicle battery
may become discharged.
XOpen the cover (Y page 387).XSwitch on the ignition.XPush in cigarette lighter :.
Cigarette lighter : will pop out
automatically when hot.
XTake out cigarette lighter :.XReinsert cigarette lighter : in its socket
after use.
Rear center console
XSwitch on the ignition.XOpen the cover.XPush in cigarette lighter :.
Cigarette lighter : will pop out
automatically when hot.
Power outlets
The power outlets can be used to
accommodate 12V DC electrical accessories
(e.g. auxiliary lamps, mobile phone chargers)
up to a maximum of 15 A (180 W).
If the engine is off and the power outlets are
being used extensively, the vehicle battery
may become discharged.
XSwitch on the ignition.
Power outlet in glove box
XOpen the glove box (Y page 381).
Power outlet in rear center console
XOpen the cover.388Useful featuresControls in detail
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Power outlet in trunk
Tele Aid
! In order to activate the Tele Aid system, a
subscriber agreement must be completed.
To ensure your system is activated and
operational, please press Information
button E to perform the acquaintance
call. Failure to complete either of these
steps may result in a system that is not
activated.
If you have any questions regarding
activation, please call the Customer
Assistance Center at
1-800-FOR-MERCedes (1-800-367-6372)
(USA only) or 1-888-923-8367 (Canada
only).
Shortly after the completion of your Tele Aid
acquaintance call, you will receive a user ID
and password in the mail. You may use this
password to access the Tele Aid section in
“Owner’s Online” at www.mbusa.com (USA
only). The “My Tele Aid” section will give you
access to account information, remote door
unlock and more.
The Tele Aid system is available if
Rit has been activated and is operational.
Activation requires a subscription for
monitoring services, connection and
cellular air time
Rvehicle battery power is available
Rthe relevant cellular phone network and
GPS signals are available and pass the
information on to the Customer Assistance
Center
iLocation of the vehicle on a map is only
possible if the vehicle is able to receive
signals from the GPS satellite network and
pass the information on to the Customer
Assistance Center.
The Tele Aid system
(Telematic Alarm Identification on Demand)
The Tele Aid system consists of three types
of response:
RAutomatic and manual emergency
RRoadside Assistance
RInformation
To adjust the speaker volume during a Tele
Aid call do the following:
XPress button W or X on the
multifunction steering wheel.
or
XUse the COMAND volume thumbwheel
H on the lower part of the front center
console (Y page 87).
Be sure to check “Owner’s Online” at
www.mbusa.com (USA only) for more
information and a description of all available
features.
System self-test
The system performs a self-test after you
have switched on the ignition.
GWarning!
A malfunction in the system has been
detected if any or all of the following
conditions occur:RThe indicator lamp in the SOS button does
not come on during the system self-test.
RThe indicator lamp in Roadside Assistance
button º does not come on during the
system self-test.
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Page 500 of 548

Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle’s
handling and stopping ability. Please note that
the TPMS is not a substitute for proper tire
maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined with
the low tire pressure telltale. When the
system detects a malfunction, the telltale will
flash for approximately 1 minute and thenremain continuously illuminated. This
sequence will continue upon subsequent
vehicle start-ups as long as the malfunction
exists. When the malfunction indicator is
illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of
incompatible replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to
continue to function properly.
Lamp in center console
ProblemPossible causes/consequences and M Solutions42
The front passenger
front air bag off
indicator lamp
illuminates and
remains illuminated
with the weight of a
typical adult or
someone larger than a
small individual on the
front passenger seat.The system is malfunctioning.XHave the system checked as soon as possible at an authorized
Mercedes-Benz Center.XRead and observe messages in the multifunction display and
follow corrective steps ( Y page 452).GWarning!
If the 42 indicator lamp
illuminates and remains illuminated with the
weight of a typical adult or someone larger
than a small individual on the front passenger
seat, do not have any passenger use the front
passenger seat until the system has been
repaired.498What to do if …Practical hints
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