four wheel drive BMW 328Ci COUPE 2000 E46 Owner's Manual

82n
Tire Pressure Control (RDC)
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The conceptThe RDC monitors the tire pressures at
all four wheels, even when the vehicle is
moving. The system provides an alert
whenever the inflation pressure drops
significantly below the specified pres-
sure in one or more tires.
In order for the RDC to "learn" the cor-
rect tire inflation pressure, first check
the tire inflation pressure in all tires.
Then compare these pressures with the
tire inflation pressure chart (page 28)
and adjust if necessary. Then activate
the system.
This indicator lamp in the instru-
ment cluster informs you when-
ever the tire pressure is not nor-
mal.
Activate the system1 Turn ignition key to position 2
2 Press the switch long enough for the
indicator lamp in the instrument clus-
ter to light up yellow for a few seconds
3 After a few minutes of driving, the
RDC sets the current inflation pres-
sure in the tires as the target value to
be monitored.
You will only have to repeat this proce-
dure if the tire inflation pressure must
be corrected. Otherwise, the RDC func-
tions automatically when the ignition
key is in position 2, and thus operates
whenever the vehicle is driven.462de228
Loss of tire pressureIf the inflation pressure has dropped too
much over a period of time (which is
normal for any tire), the indicator lamp
will come on with a yellow lamp.
This alerts you to have the tires inflated
to the specified pressures as soon as
possible.
If you are prompted to check the
tire pressure shortly after a cor-
rection has been made, this indicates
that the corrected values were not ac-
curate. Please check the inflation pres-
sure again and make corrections ac-
cording to the inflation pressure table.
Then activate the system once again.<