Mercedes-Benz SL 2016 Operator's Manual page 256

Tire pressure
254
icantly too low. The tire pressure monitor is
not malfunctioning.
if the warning lamp flashes for around a
R
minute and then remains lit constantly, the
tire pressure monitor is malfunctioning.
In addition to the warning lamp, a message
appears in the multifunction display. Observe
the information on display messages
( page 174).
Y
It may take up to ten minutes for a malfunc-
tion of the tire pressure monitor to be indica-
ted. A malfunction will be indicated by the tire
pressure warning lamp flashing for approx-
imately one minute and then remaining lit.
When the malfunction has been rectified, the
tire pressure warning lamp goes out after a
few minutes of driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at a gas station with a pressure gage.
The tire pressures shown by the on-board
computer refer to those measured at sea
level. At high altitudes, the tire pressure val-
ues indicated by a pressure gage are higher
than those shown by the on-board computer.
In this case, do not reduce the tire pressures.
The operation of the tire pressure monitor can
be affected by interference from radio trans-
mitting equipment (e.g. radio headphones,
two-way radios) that may be being operated
in or near the vehicle.
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
Tire pressure will be
20 minutes, the
displayed after driving a few
minutes
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
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.
R
R
R
Observe the instructions and safety notes in
the display messages in the "Tires" section
(
Y
page 119).
Y
i
Serv.
menu.
message appears.
display message is shown
Please Correct Tire Pressure
If the
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.
Check Tires
If the message appears in the
multifunction display, the tire pressure in
one or more tires has dropped significantly
and the tires must be checked.
Warning Tire Malfunction
If the
appears in the multifunction display, the
tire pressure in one or more tires has drop-
ped suddenly and the tires must be
checked.
page 174).
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.
Tire Pressure