2005 MERCEDES-BENZ C CLASS COUPE Owners Manual

344 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
The yellow fuel tank reserve
warning lamp in the fuel gauge
comes on while driving.
The fuel level has gone below the reserve
mark.

Refuel at the next gas station
(page 288).
<
The red seat belt telltale illumi-
nates for a brief period after
starting the engine.
The telltale reminds you and your passengers
to fasten seat belts.

Fasten your seat belt.
The telltale goes out.
The red seat belt telltale
illuminates and a warning chime
sounds for approximately six
seconds after starting the
engine.
The driver’s seat belt is not fastened before
the engine is started.

Fasten the driver’s seat belt.
The telltale goes out.
1
The red SRS indicator lamp
comes on while driving.
There is a malfunction in the restraint
systems. The air bags or emergency
tensioning devices (ETDs) could deploy
unexpectedly or fail to deploy in an accident.

Drive with added caution to the
nearest authorized Mercedes-Benz
Center.
Warning!
G
In the event a malfunction of the SRS is
indicated as outlined above, the SRS may
not be operational.
For your safety, we strongly recommend
that you visit an authorized Mercedes-Benz
Center immediately to have the system
checked; otherwise the SRS may not be
activated when needed in an accident,
which could result in serious or fatal injury,
or it might deploy unexpectedly and unnec-
essarily which could result in an accident
and/or injury to you or to others.

345
Practical hints
What to do if …
Lamp in center consoleProblem
Possible cause
Suggested solution
56
The front passenger front air bag
off indicator lamp illuminates and
remains illuminated with the
weight of a typical adult or some-
one larger than a small individual
on the front passenger seat.
The system is malfunctioning.

Have the system checked as soon as possible
by an authorized Mercedes-Benz Center.

Also note any messages in the multifunction
display and follow corrective steps
(page 347).
Warning!
G
If the
56 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.

346 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
56
The front passenger front air
bag off indicator lamp does
not illuminate and/or does
not remain illuminated with
the weight of a typical
12-month-old child in a stan-
dard child restraint or less on
the front passenger seat.
The system is malfunctioning.

Make sure there is nothing between seat cushion
and child seat and check installation of the child
seat.

Make sure that no objects applying supplemental
weight onto the seat are present.

If the front passenger front air bag off indicator lamp
remains out, have the system checked as soon as
possible by an authorized Mercedes-Benz Center.
Do not transport a child on the front passenger seat
until the system has been repaired.

Also note any messages in the multifunction display
and follow corrective steps (
page 349).
Warning!
G
If the 56 indicator lamp does not
illuminate or remains out with the weight of
a typical 12-month-old child in a standard
child restraint or less on the front passenger
seat, do not transport a child on the front
passenger seat until the system has been
repaired.

347
Practical hints
What to do if …
Vehicle status messages in the multifunction display
Warning and malfunction messages
appear in the multifunction display located
in the instrument cluster.
Certain warning and malfunction messag-
es are accompanied by an audible signal.
Address these messages accordingly and
follow the additional instructions given in
this Operator’s Manual.
Selecting the vehicle status message
memory menu in the control system
(page 132) displays both cleared and
uncleared messages.
High-priority messages appear in the
multifunction display in red color. Certain messages of high priority cannot
be cleared from the multifunction display
using the reset button (
page 24) or
button j, k , ÿ , orè on the
steering wheel.
Other messages of high priority and
messages of less immediate priority can
be cleared from the multifunction display
using the reset button (page 24) or
button j, k , ÿ , orè on the
steering wheel. These are then stored in
the vehicle status message memory
(
page 132). Remember that clearing a
message will only make the message dis-
appear. Clearing a message will not cor-
rect the condition that caused the
message to appear.
Warning!
G
All categories of messages contain
important information which should be
taken note of and, where a malfunction is
indicated, addressed as soon as possible at
an authorized Mercedes-Benz Center.
Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property
damage or personal injury.Warning!
G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
Contact your nearest authorized
Mercedes-Benz Center.

348 Practical hintsWhat to do if …On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may
appear in the display. High priority
messages appear in red color.For your convenience the messages are
divided into two sections:


Text messages (
page 349)


Symbol messages (
page 357)
iSwitching on the ignition causes all
instrument cluster lamps (except low
beam headlamp indicator lamp, high
beam headlamp indicator lamp, and
turn signal indicator lamps unless
activated) as well as the multifunction
display to come on. Make sure the
lamps and multifunction display are in
working order before starting your
journey.

349
Practical hints
What to do if …
Text messagesDisplay message
Possible cause
Possible solution
Front-pass
airbag activated
See Operator’s Manual
Air bag is activated while driving even
though a child, small individual, or object
below the system's weight threshold is on
the front passenger seat, or the front pas-
senger seat is empty. Objects on the seat
or forces acting on the seat may make the
system sense supplemental weight.
Stop the vehicle in a safe location as soon
as possible and check the following:
Make sure that there is nothing
between seat cushion and child seat
and check installation of the child
seat.

Make sure that no objects applying
supplemental weight onto the seat are
present. The system may recognize
such supplemental weight and sense
that an occupant on the front passen-
ger seat is of a heavier weight than ac-
tually present.
(Continued on next page)

350 Practical hintsWhat to do if …Display message
Possible cause
Possible solution
Front-pass
airbag activated
See Operator’s Manual
If performing any of the above corrective steps is
successful, the message
Front-pass airbag
deactivated See Operator’s Manual
will appear
in the multifunction display, confirming the situa-
tion has been remedied. Note that after perform-
ing the corrective steps, it may take up to
60 seconds for the message
Front-pass airbag
deactivated See Operator’s Manual
to appear.
If the message
Front-pass airbag activated
See Operator’s Manual
remains on in the multi-
function display and/or the 56indicator
lamp remains out even after performing the
above corrective steps, have the system checked
as soon as possible by an authorized
Mercedes-Benz Center.
Warning!
G
If the message
Front-pass airbag
activated See Operator’s Manual
re-
mains on in the multifunction display and/or
the 56 indicator lamp remains out
even after performing the above corrective
steps, do not have any children12 years old
and under and other small individuals use
the front passenger seat until the system
has been repaired.

351
Practical hints
What to do if …
Display message
Possible cause
Possible solution
Front-pass
airbag deactivated
See Operator’s Manual
Air bag is deactivated while driv-
ing even though an adult or some-
one larger than a small individual
is occupying the front passenger
seat. Forces acting on the seat
may make the system sense a
decrease in weight.
Stop the vehicle in a safe location as soon as possi-
ble and check the following:
Do not lean on armrests or lift yourself up using
handle over the door. This may make the system
sense that an occupant of a lesser weight than
actually present is on the front passenger seat.

Re-position yourself.

Sit properly belted in a nearly upright position
with your back against the seat backrest.
If performing any of the above corrective steps is
successful, the message
Front-pass airbag
activated See Operator’s Manual
will appear in the
multifunction display, confirming the situation has
been remedied.
(Continued on next page)