General Notes - Mercedes-Benz 2015 M-Class Operator's Manual

when adjusting the tire pressure
( page 404).
Y
i The actual values for tires are vehicle-
specific and may deviate from the values in
the illustration.
Checking the tire pressures
Important safety notes
Observe the notes on tire pressure
( page 404).
Y
Information on air pressure for the tires on
your vehicle can be found:
on the vehicle's Tire and Loading Informa-
R
tion placard on the B-pillar (
on the tire pressure label on the fuel filler
R
flap ( page 179)
Y
in the "Tire pressure" section
R
under "Tire pressure" (
R
Checking tire pressures manually
To determine and set the correct tire pres-
sure, proceed as follows:
Remove the valve cap of the tire that is to
X
be checked.
Press the tire pressure gauge securely onto
X
the valve.
Read the tire pressure and compare it with
X
the recommended value on the Tire and
Loading Information placard (
If the tire pressure is too low, increase it to
X
the recommended value.
If the tire pressure is too high, release air by
X
pressing down the metal pin in the valve.
Use the tip of a pen, for example. Then,
check the tire pressure again using the tire
pressure gauge.
Screw the valve cap onto the valve.
X
Repeat these steps for the other tires.
X
page 412)
Y
page 404)
Y
page 404).
Y
Tire pressure loss warning system

General notes

While the vehicle is in motion, the tire pres-
sure loss warning system monitors the set
tire pressure using the rotational speed of the
wheels. This enables the system to detect
significant pressure loss in a tire. If the speed
of rotation of a wheel changes as a result of a
loss of pressure, a corresponding warning
message will appear in the multifunction dis-
play.
You can recognize the tire pressure loss warn-
ing by the Run Flat Indicator Active Run Flat Indicator Active
Press 'OK' to Restart Press 'OK' to Restart
appears in the Service Service
function display. Information on the message
display can be found in the "Restarting the tire
pressure loss warning system" section
( page 408).
Y
Important safety notes
The tire pressure warning system does not
warn you of an incorrectly set tire pressure.
Observe the notes on the recommended tire
pressure ( page 404).
Y
The tire pressure loss warning does not
replace the need to regularly check the tire
pressure. An even loss of pressure on several
tires at the same time cannot be detected by
the tire pressure loss warning system.
The tire pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tire is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a halt by braking carefully. Avoid
abrupt steering maneuvers.
The function of the tire pressure loss warning
system is limited or delayed if:
snow chains are mounted on your vehicle's
R
tires.
road conditions are wintry.
R
you are driving on sand or gravel.
R
Tire pressure
message which
menu of the multi-
Z
407