Filter
Top Products
85n
Index Data Technology Repairs Car care Controls Overview
Tire Pressure Control (RDC)*
The concept
The 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 system to "learn"
the correct tire inflation pressure, first
check the tire inflation pressure in all
tires. Then compare these pressures
with the tire inflation pressure chart
(page 29) 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
normal.
Activate the system
Depending on the type of equipment,
the switch either has the letters RDC on
it or the RDC-symbol.
1 Turn the ignition key to position 2
(do not start the engine).
2 Press the switch long enough for the
indicator lamp in the instrument
cluster to light up yellow for a few
seconds.
3 After a few minutes driving time, the
RDC sets the current inflation pres-
sure in the tires as the target values
to be monitored.
You will only have to repeat this proce-
dure following a correction of the tire
inflation pressure. Otherwise, the RDC
functions automatically when the igni-
tion key is in position 2, and thus oper-
ates whenever the vehicle is driven.
460us297
Loss of tire pressure
If the inflation pressure has dropped
significantly over a long period of time
(which is normal for any tire), the indi-
cator lamp will come on with a yellow
lamp.
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
correction has been made, this indi-
cates that the corrected values were
not accurate. Please check the inflation
pressure again and make corrections
according to the inflation pressure
table. Then activate the system once
again.<
Online Edition for Part No. 01 41 0 155 307 - © 09/00 BMW AG