General Notes - Mercedes-Benz B-Class Operator's Manual

Checking tire pressures manually
To determine and set the correct tire
pressure, 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 on the
B-pillar on the driver's side of your vehicle.
If necessary, increase the tire pressure to
X
the recommended value (
If the tire pressure is too high, release air
X
by pressing down the metal pin in the valve
using 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
Tire pressure loss warning system

General notes

While the vehicle is in motion, the tire
pressure 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
display.
You can recognize the tire pressure loss
warning by the Run Flat Indicator
Active Press 'OK' to Restart
which appears in the Service
multifunction display. Further information on
the message display can be found under
"Restarting the tire pressure loss warning
system" ( page 319).
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 (
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
page 315).
Y
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
you adopt a very sporty driving style
R
(cornering at high speeds or driving with
high rates of acceleration).
you are driving with a heavy load (in the
R
vehicle or on the roof).
Restarting the tire pressure loss
warning system
Restart the tire pressure loss warning system
if you have:
changed the tire pressure
R
changed the wheels or tires
R
mounted new wheels or tires
R
message
Before restarting, make sure that the tire
X
menu of the
pressures are set properly on all four tires
for the respective operating conditions.
The recommended tire pressure can be
found on the Tire and Loading Information
placard on the B-pillar on the driver's side.
Additionally, a tire pressure table is
attached to the fuel filler flap. The tire
Tire pressure
page 315).
Y
319
Z