Mercedes-Benz 2010 M-Class Operator's Manual page 307

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
Lamp in center console
Problem
Canada only:
42
The front passenger
front air bag off
indicator lamp
illuminates and
remains illuminated
( Y page 47).
Canada only:
42
The front passenger
front air bag off
indicator lamp does not
illuminate or does not
remain illuminated with
TM
a BabySmart child
seat properly installed
on the passenger seat.
USA only:
42
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.
Possible causes/consequences and M Solutions
TM
A BabySmart child seat is installed on the front passenger seat.
Therefore the front passenger front air bag is switched off.
The system is malfunctioning when there is no BabySmart
seat installed on the front passenger seat.
X
Have the system checked as soon as possible at an authorized
Mercedes-Benz Center.
The system is malfunctioning.
X
Make sure there is nothing between seat cushion and child seat.
X
Check installation of the child seat (
If the front passenger front air bag off indicator lamp remains out:
X
Have the system checked as soon as possible at an authorized
Mercedes-Benz Center.
Do not use the BabySmart
front passenger seat until the system has been repaired.
The system is malfunctioning.
X
Have the system checked as soon as possible at an authorized
Mercedes-Benz Center.
X
Read and observe messages in the multifunction display and
follow corrective steps (
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.
Y page 58).
TM
restraint to transport children on the
Y page 272).
What to do if ...
TM
child
Z
305