Mercedes-Benz 2009 SL-Class Operator's Manual page 224

Operation
Tires and wheels
is mounted does not reflect the actual
spare tire inflation pressure.
i Operating radio transmission equipment
(e.g. wireless headsets, two-way radios) in
or near the vehicle could cause the TPMS
to malfunction.
Tire inflation pressure warnings
If the system detects a significant loss of tire
inflation pressure in one or more than one
tire, a message appears in the multifunction
display.
The respective tire is indicated by a red rec-
tangle. In addition, a warning signal sounds.
Restarting Advanced TPMS
G Warning!
It is the driver's responsibility to calibrate
the TPMS on the recommended cold infla-
tion pressure. Underinflated tires affect the
222
ability to steer or brake the vehicle. You
might lose control over the vehicle.
The TPMS usually recognizes new reference
values automatically, for example when you
have
adjusted the tire inflation pressure
R
changed wheels or tires
R
mounted new wheels or tires
R
If you want to set new reference values man-
ually:
X
Using the Tire and Loading Information
placard on the driver's door B-pillar
( Y page 212) or, if available, the supple-
mental tire inflation pressure information
on the inside of the fuel filler flap
( Y page 201), make sure the tire inflation
pressure of all four tires is correct.
i Restart the TPMS after adjusting the tire
inflation pressure to the inflation pressure
recommended for the vehicle operating
condition. Tire pressure should only be
adjusted on cold tires. Observe the recom-
mended tire inflation pressure on the Tire
and Loading Information placard on the
driver's door B-pillar. Some vehicles may
have supplemental tire pressure informa-
tion for driving at high speeds or for vehicle
loads less than the maximum loaded vehi-
cle condition. If such information is pro-
vided, it can be found on the inside of the
fuel filler flap.
X
Switch on the ignition.
X
Press button or
è ÿ
function steering wheel repeatedly until the
standard display appears in the multifunc-
tion display ( Y page 129).
X
Press button or repeatedly until
j k
you see the current inflation pressures for
each tire appear in the display or the fol-
lowing message appears in the multifunc-
tion display
Tire pressure
displayed after
driving for
a few minutes.
X
Press the reset button ( Y page 124).
The following message will appear in the
multifunction display:
Restart tire
pressure monitor?
on the multi-