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92n
Tire Pressure Control (RDC)*
The concept
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 system to "learn" the
correct tire inflation pressure, check the
inflation pressure in all tires. Refer to
the table of "Tire inflation pressures"
beginning on page 29 and make any
necessary corrections. Then activate
the system.
This indicator lamp in the in-
strument cluster or the Check
Control will inform you if the tire
pressure is not correct.
Activate the system
1 Turn the ignition key to position 2 (do
not start the engine).
2 Press and hold the button (arrow) un-
til the yellow indicator lamp in the in-
strument cluster comes on for a few
seconds or the message "SET TIRE
PRESSURE" appears in the Check
Control.
3 After you have driven for a few min-
utes, the RDC will import the current
inflation pressure in the tires as the
target values which the system will
monitor.
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.
390de320
Loss of tire pressure
If, after a certain period of time, the air
pressure has gone down significantly
(which is normal for any tire), the yellow
indicator lamp comes on or the mes-
sage "CHECK TIRE PRESSURE" ap-
pears in the Check Control.
This alerts you that you should 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.<
Online Edition for Part No. 01 41 0 155 012 - © 07/99 BMW AG
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