SMART Fortwo coupe Operator's Manual page 175

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.
Warning and indicator lamps in the overhead control panel
Problem
4 0
The 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 passenger seat.
4 0
The passenger front
air bag off 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 passenger seat
G WARNING
If the 4 0 indicator lamp illuminates and remains illuminated with the weight
of a typical adult or someone larger than a small individual on the passenger seat, do not
have any passenger use the passenger seat until the system has been repaired.
Possible causes/consequences and M Solutions
There is a malfunction in the system.
Have the system checked at an authorized smart center.
X
There is a malfunction in the system.
Have the system checked at an authorized smart center.
X
What to do if ...
173
Z