vehicle and any obstructions always remains
with the driver. Even when sensors are involved,
there is a blind spot in which objects cannot be
detected. The system is also subject to the
physical limits that apply to all forms of ultra-
sonic measurement, such as those encoun-
tered with thin and wedge-shaped objects, etc.
Low objects already displayed, e.g. a curb, can
also disappear from the detection area of the

sensors again before a continuous tone
sounds.
Loud noises from outside and inside your vehi-
cle may prevent you from hearing the PDC sig-
nal tone.

Do not apply high pressure spray to the
sensors for a prolonged period of time.

Keep the spray at least 4 in/10 cm away from
the sensors.

Driving stability control

systems

Your BMW is equipped with an extended array
of systems designed to enhance and maintain
vehicle stability under extreme conditions.

ABS Antilock Brake System

ABS prevents the wheels from locking during
braking. Safe steering response is maintained
even during hard braking. This increases active
driving safety.
ABS is operational every time you start the
engine. For information on safe braking, refer to
page

109

CBC Cornering Brake Control

This system provides further enhancements to
vehicle stability and steering response when
braking while cornering or when braking during
a lane change.

Electronic brake-force distribution

This system controls the brake system's appli-
cation pressure at the rear wheels to ensure
stable deceleration.

DBC Dynamic Brake Control

When you apply the brakes rapidly, this system
automatically produces the maximum braking
force boost and thus helps to achieve the short-
est possible braking distance during panic
stops. This system exploits all of the benefits
provided by ABS.

This manual is related to the following products:

645Ci Convertible 2005