Page 247 of 286

in the fuse allocation chart. An authorized
Mercedes-Benz Center will be happy to
advise you.
i If a fuse has blown, contact a breakdown
service or an authorized Mercedes-Benz
Center.
If the newly inserted fuse also blows, have the
cause traced and rectified at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center. Before changing a fuse
X Park the vehicle and apply the electric
parking brake.
X Switch off all electrical consumers.
X Remove the SmartKey from the ignition
lock.
The fuses are located in various fuse boxes:
R fuse box in the footwell on the front-
passenger side
R fuse box in the rear
The "Relay and fuse information sheet" is
located with the wheel-change toolkit in the
trunk. Fuse box in the footwell
X
To open: remove the carpet over the
footrest.
X Loosen screws :on the floor panel using
a suitable tool.
X Remove the floor panel. X
To close: install the floor panel again.
X Screw in and tighten screws :.
X Put in the carpet and press to secure.
! The floor panel must be installed properly,
otherwise moisture or dirt could impair the
function of the fuses. Fuse box in the rear
Coupe X
To open: open the trunk.
X Fold cover :in the center of the rear wall
down in the direction of the arrow.
X To close: fold cover :up in the opposite
direction to the arrow and press to secure.
! The cover must be installed properly,
otherwise moisture or dirt could impair the
function of the fuses.
Roadster Fuses
245Breakdown assistance Z
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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 then
remain 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.
i USA only:
If the tire pressure monitor is
malfunctioning, it may take more than
10 minutes for the tire pressure warning
lamp to inform you of the malfunction by
flashing for 60 seconds and then remaining
lit.
When the malfunction has been rectified,
the tire pressure warning lamp goes out
after a few minutes of driving.
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.
i 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.
i 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.
i USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause interference,
and
2. this device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
i Canada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause interference,
and
2. this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
Checking tire pressure electronically X
Select key position 2with the Start/Stop
button (Y page 113).
X Press the =or; button to select the
Service
Service menu.
X Press the 9or: button to select
TIRE PRESS. TIRE PRESS. .
X Press the abutton. 256
Tire pressureWheels and tires
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The current tire pressure for each wheel will
be displayed in the multifunction display.
If the vehicle is parked for longer than
20 minutes and you then drive at less than
25 km/h, the Tire pressures will be
Tire pressures will be
displayed after driving a few displayed after driving a few
minutes minutes message appears.
After a teach-in period, the tire pressure
monitor automatically recognizes new wheels
or new sensors. As long as a clear allocation
of the tire pressure values to the individual
wheels is not possible, the Tire Pressure
Tire Pressure
Monitor Active Monitor Active display message is shown
instead of the tire pressure display. The tire
pressures are already being monitored.
Tire pressure monitor warning
messages If the tire pressure monitor detects a
significant pressure loss on one or more tires,
a warning message is shown in the
multifunction display. A warning tone also
sounds and the tire pressure warning lamp
lights up in the instrument cluster.
Each tire that is affected by a significant loss
of pressure is highlighted with a color.
If the following message appears in the
multifunction display: Correct Tire
Correct Tire
Pressure Pressure
X Check the tire pressure on all four wheels
and correct it if necessary.
i If the wheel positions on the vehicle are
interchanged, the tire pressures may be
displayed for the wrong positions for a
short time. This is rectified after a few
minutes of driving, and the tire pressures
are displayed for the correct positions.
Restarting the tire pressure monitor When you restart the tire pressure monitor,
all existing warning messages are deleted and
the warning lamps go out. The monitor uses
the currently set tire pressures as the
specified values for monitoring. In most cases, the tire pressure monitor will
automatically detect the new reference
values, e.g. if you have:
R
changed the tire pressure
R changed the wheels or tires
R mounted new wheels or tires
If you are defining the new reference values
manually:
X Use the table on the inside of the fuel filler
flap to ensure that the tire pressure is set
correctly in all four tires for the current
operating conditions.
Also observe the notes in the section on tire
pressures (Y page 251).
X Select key position 2with the Start/Stop
button.
X Press the =or; button to select the
Service Service menu.
X Press the 9or: button to select
TIRE PRESS.
TIRE PRESS. .
X Press the abutton.
The display shows either the current tire
pressure for the individual tires or the
Tire pressures will be displayed Tire pressures will be displayed
after driving a few minutes after driving a few minutes
message.
X Press the :button.
The Use Current Pressures as New Use Current Pressures as New
Reference Values
Reference Values message appears in
the multifunction display.
X Press the abutton.
The Tire Press. Monitor Restarted
Tire Press. Monitor Restarted
message appears in the multifunction
display.
After a few minutes of driving, the current
pressures are adopted as the new
monitoring values.
Canceling the restart X
Press the %button.
or
X Press the 9button to leave the menu. Tire pressure
257Wheels and tires Z
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