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Practical hints
What 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 standard child
restraint or less on the front
passenger seat.
The system is malfunctioning. ̈ Make sure that there is nothing be-
tween 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 (
୴ page 354).
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.