Mercedes-Benz Metris Operator's Manual page 209

new reference values. This will ensure that a warn-
ing message will only appear if the tire pressure
drops signi cantly.
The h warning lamp in the instrument cluster
displays a detected pressure loss or a malfunction
as follows:
If the h warning lamp is lit continuously,
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the tire pressure on one or more tires is signi -
cantly too low. The tire pressure monitor is not
malfunctioning.
If the h warning lamp ashes for around a
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minute and then remains lit constantly, the tire
pressure monitor is malfunctioning.
a message also appears in the instrument clus-
R
ter.
System limits Syst em limits
The system may be impaired or may not function in
the following situations:
The tire pressure has been set incorrectly.
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There is a sudden pressure loss caused, for
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example, by a foreign object penetrating the
tire.
There is a malfunction caused by another radio
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signal source.
If the tire pressure monitor is malfunctioning, it
may take more than ten minutes for the h tire
pressure warning lamp to inform you of the mal-
function. When the malfunction has been recti ed,
the h warning lamp goes out a er you have
driven for a few minutes.
The tire pressure values indicated by the on-board
computer may di er from those measured at a gas
station using a pressure gauge.
The tire pressures shown by the on-board com-
puter refer to those measured at sea level. At high
altitudes, the tire pressure values indicated by a
pressure gauge are higher than those shown by the
on-board computer. In this case, do not reduce the
tire pressure.
Wheels and tires 207
Checking t Chec king the tir he tire pr e pressur essure electr e electronicall
v v ehicles wit ehicles with st h steer eering wheel butt ing wheel buttons)
R R eq equir uirements: ements:
The vehicle is switched on.
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Press the = or ; button to select
#
Service.
Press the a button.
#
Use the : or 9 button to select
#
Pressure.
Press the a button.
#
The display shows the current tire pressure of
each wheel.
If the vehicle was parked for longer than
20 minutes, the Tire pressure will be displayed
after driving a few minutes message appears in
the display.
%
Also be sure to observe the notes on tire pres-
sure ( page 204).
/
R R est estar arting t ting the tir he tire pr e pressur essure monit e monitor oring syst
R R eq equir uirements: ements:
The vehicle is switched on.
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The recommended tire pressure is correctly
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set for the respective operating condition on
each of the four wheels (
V V ehicles wit ehicles with st h steer eering-wheel butt ing-wheel buttons
Use the = or Ì button to select
#
Service.
Use the : or 9 button to select
#
Pressure.
Press the a button to con rm.
#
The display shows the current tire pressure of
each wheel or the Tire pressure will be dis-
played after driving a few minutes
Press the : button.
#
The Use Current Pressures as New Refer-
ence Values: message is shown in the display.
207
onically (only y (only
ons)
Tire
ing system em
page 205).
/
ons
Tire
message.