Mercedes-Benz SL SERIES Operator's Manual page 579

Checking the tire pressure electroni-
cally
Make sure that the SmartKey is in position
X
2 in the ignition lock (
Press the = or ; button on the steer-
X
ing wheel to select the
Press the 9 or : button to select
X
Tire Pressure.
Press the a button.
X
The current tire pressure of each tire is
shown in the multifunction display.
If the vehicle has been parked for over
20 minutes, the Tire pressure will be
displayed after driving a few
minutes message appears.
After a teach-in process, the tire pressure
monitor automatically detects new wheels or
new sensors. As long as a clear allocation of
the tire pressure value to the individual
wheels is not possible, the
Monitor Active display message is shown
instead of the tire pressure display. The tire
pressures are already being monitored.
Tire pressure monitor warning mes-
sages
If the tire pressure monitor detects a pressure
loss in one or more tires, a warning message
is shown in the multifunction display and the
yellow tire pressure monitor warning lamp
comes on.
If the Please Correct Tire Pressure
R
message appears in the multifunction dis-
play, the tire pressure in at least one tire is
too low and must be corrected at the next
opportunity.
If the Check Tires
R
multifunction display, the tire pressure in
one or more tires has dropped significantly
and the tires must be checked.
If the Warning Tire Malfunction
R
appears in the multifunction display, the
tire pressure in one or more tires has drop-
ped suddenly and the tires must be
checked.
page 151).
Y
Serv. menu.
Tire Pressure
message appears in the
Observe the instructions and safety notes in
the display messages in the "Tires" section
( page 264).
Y
i
If the wheel positions on the vehicle are
rotated, the tire pressures may be dis-
played for the wrong positions for a short
time. This is rectified after a few minutes of
driving, and the tire pressures are displayed
for the correct positions.
Restarting the tire pressure monitor
When you restart the tire pressure monitor, all
existing warning messages are deleted and
the warning lamps go out. The monitor uses
the currently set tire pressures as the refer-
ence values for monitoring. In most cases, the
tire pressure monitor will automatically
detect the new reference values after you
have changed the tire pressure. However, you
can also define reference values manually as
described here. The tire pressure monitor
then monitors the new tire pressure values.
Set the tire pressure to the value recom-
X
mended for the corresponding driving sit-
uation on the Tire and Loading Information
placard on the driver's side
B-pillar ( page 571).
Y
Additional tire pressure values for different
loads can also be found on the tire pressure
table on the inside of the fuel filler flap
( page 571).
Y
Make sure that the tire pressure is correct
X
on all four wheels.
Make sure that the SmartKey is in position
X
2 in the ignition lock.
Press the = or ; button on the steer-
X
ing wheel to select the
Press the 9 or : button to select
X
Tire Pressure.
Press the a button.
X
The multifunction display shows the cur-
rent tire pressure for the individual tires or
the Tire pressure will be displayed
Tire pressure
Serv. menu.
Z
577