Mercedes-Benz 2013 M Class - Manual (Page 411)

Tire pressure monitor warning
messages
If the tire pressure monitor detects a pressure
loss in one or more tires, a warning message
is shown in the multifunction display. A
warning tone also sounds and the tire
pressure warning lamp lights up in the
instrument cluster. Each tire that is affected
by a significant loss of pressure is highlighted
in the pressure display.
R
If the Correct Tire Pressure message
appears in the multifunction display, the
tire pressure in at least one tire is too low
and must be corrected at the next
opportunity.
R
If the Check Tires message appears in the
multifunction display, the tire pressure in
one or more tires has dropped significantly
and the tires must be checked.
R
If the Warning Tire Malfunction
message appears in the multifunction
display, the tire pressure in one or more
tires has dropped suddenly and the tires
must be checked.
i If the wheel positions on the vehicle are
rotated, the tire pressures may be
displayed 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
reference 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.
X Set the tire pressure to the value
recommended for the corresponding
driving situation on the Tire and Loading
Information placard on the B-pillar on the
driver's side (
Y page 402).
Additional tire pressure values for different
loads can also be found on the tire pressure
table on the inside of the fuel filler flap
(
Y page 174).
X Make sure that the tire pressure is correct
on all four wheels.
X Make sure that the SmartKey is in position
2 in the ignition lock.
X Press the = or ; button on the
steering wheel to select the
Serv. menu.
X Press the 9 or : button to select
Tire Pressure .
X Press the a button.
The multifunction display shows the
current tire pressure for the individual tires
or the
Tire pressure will be
displayed after driving a few
minutes message.
X Press the : button.
The
Use current pressures as new
reference values message appears in
the multifunction display.
If you wish to confirm the restart:
X Press the a button.
The
Tire Press. Monitor Restarted
message appears in the multifunction
display.
After driving for a few minutes, the system
checks whether the current tire pressures
are within the specified range. The new tire
pressures are then accepted as reference
values and monitored.
If you wish to cancel the restart:
X Press the % button.
The tire pressure values stored at the last
restart will continue to be monitored.
Tire pressure
409
Wheels and tires
Z