trailer BMW 325Ci 2003 Owners Manual

87 Technology for safety and driving convenience
Park Distance Control (PDC)*The conceptPDC provides extra safety and conve-
nience during parking maneuvers.
Acoustic signals alert you to the
momentary distance to an object
behind your vehicle. The system fea-
tures four ultrasonic sensors mounted
in your rear bumper. The monitoring
range for the two corner sensors
extends outward roughly 2 ft/60 cm,
while two centrally located sensors
detect objects at distances of up to
approx. 5 ft/1.50 m.
PDC is a parking aid that can
identify objects if they are
approached slowly, as is generally the
case when parking. Avoid driving
towards objects rapidly; due to underly-
ing physical principles, the system may
otherwise alert you too late for you to
take evasive steps.<
The system starts to operate automati-
cally approx. one second after you
select Reverse or move the selector
lever into the R position with the igni-
tion key in position 2.
Let this short period elapse before
driving backwards.<
PDC is deactivated when you shift back
out of Reverse.
You can have a signal set to con-
firm that the PDC has been acti-
vated. indicated by a tone sounding at various
intervals. As the distance between vehi-
cle and object decreases, the intervals
between the tones become shorter. A
continuous tone indicates the pres-
ence of an object less than 1 ft/30 cm
away.
The warning signal is canceled after
approx. three seconds if the distance to
the object remains constant during this
time – if you are moving parallel to
a wall, for instance.
System malfunctions will be indicated
by a continuous high-pitched tone
when the system is activated the first
time. Please have the problem fixed by
your BMW center.
PDC does not replace the driver's
personal responsibility for evaluat-
ing the distance between the vehicle
and any objects. Always remember that
the sensors can neither detect nor pro-
vide warnings of obstacles located
within their blind angles. This applies
especially in those cases where the
system approaches the physical limits
of ultrasonic measurement, as occurs
with tow bars and trailer couplings, and
in the vicinity of thin or wedge-shaped
objects. Moreover, low objects that
have already been detected – such as a
curb edge – can disappear out of the
detection range of the sensors before a
continuous tone sounds.
Loud sources of sound from outside or
inside the vehicle could drown out the
PDC signal tone.<
Keep the sensors clean and free
of ice or snow in order to ensure
that they will continue to operate effec-
tively.
Do not apply high pressure spray to the
sensors for a prolonged period of time.
Always maintain a distance of more
than 4 in/10 cm.<
OverviewControlsMaintenanceRepairsDataIndex
handbook.book Page 87 Wednesday, July 31, 2002 9:29 AM