BMW serie 7 1999 Manual Do Utilizador

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 RDC to "learn" the cor-
rect tire inflation pressure, check the in-
flation pressure in all tires. Refer to the
table of "Tire inflation pressures" on
page

and make corrections if neces-

sary. Then activate the system.

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 message "SET TIRE PRES-
SURE" 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.

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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 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.