BMW 520D BROCHURE 2009, Owner'S Handbook Manual

Page: 105 / 203

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Self-levelling suspension * Tyre pressure control (RDC)
*
The self-levelling suspension
warning light comes on and the
Check Control displays the
"SELFLEVEL SUSP.INACT": the self-
levelling suspension is malfunctioning.
Stop the car and examine it. If the body
is distinctly lower at the back than at
the front, and possibly standing at an
angle (for instance, lower at the left
than at the right), take it to the nearest
BMW Service. Drive cautiously while
the car is in this condition. The car's
ground clearance is reduced and its
ride comfort below the usual standard.
Even if the car appears to be at its
normal ride height and attitude, always
take it to BMW Service if a malfunction
is displayed.
The principle
RDC monitors the air pressure in all four
tyres, including when the car is being
driven. The system reports any sudden
loss of pressure in one or more tyres.
So that the system can identify the
correct tyre pressures, first check these
against the tyre pressure tables starting
on page 25 and correct them if neces-
sary. Then activate the system.
This indicator light on the instru-
ment panel or the Check Control
informs you whenever tyre pres-
sure is not normal.
Activating the system
1. Turn the ignition key to position 2
(do not start the engine)
2. Keep the button pressed in until the
yellow indicator light on the instru-
ment panel comes on for a few
seconds or the Check Control
displays "SET TYRE PRESSURE"
3. After the car has been driven for a
few minutes, RDC adopts the actual
tyre pressure as the desired value to
be monitored.
You do not need to repeat this proce-
dure unless the tyre pressures have
been corrected in the meantime. The
system will be activated automatically
each time the ignition key is in
position 2 and therefore each time the
car is driven.
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ba.book Page 105 Tuesday, December 17, 2002 4:26 PM