Flat tire monitor, Dynamic stability control (dsc) – BMW 325Ci Coupe 2004 User Manual

Page 82

Under these special circumstances
traction is increased by deactivating the
control systems that enhance traction
under normal conditions.

Deactivating the DSC and the
DTC

Press the DSC button as long as you
need to until the indicator lamp and the
yellow brake warning lamp light up, but
no more than 10 seconds.

The systems for enhancing stability and
traction are deactivated, and there is no
active braking intervention or torque
control.

To maintain vehicle stability,
always drive with the DSC acti-

vated whenever possible.

Reactivating the DSC

Tap the button again; the indicator lamp
or the indicator lamps will go out. DTC
is deactivated.

The laws of physics cannot be
repealed even with DSC. It will

always be the driver's responsibility to
drive in a manner that matches road
conditions. This is why you should not
use the additional safety margin the
system provides as an excuse to take
risks.
Whenever the DTC is activated, the
DSC is switched off and DTC performs
minor stabilizing intervention.
Do not make any modifications to the
DSC system. Allow only authorized
technicians to perform service proce-
dures on the DSC.

Flat Tire Monitor*

The concept

As you drive, the Flat Tire Monitor
keeps track of pressure levels in all four
tires. The system alerts you whenever
the inflation pressure of a tire falls sig-
nificantly below the pressure of another
tire.

The system actually detects pressure
loss by monitoring differences in the
relative speeds of the four wheels. It
interprets variations outside specified
limits as severe pressure loss, and then
responds by generating a warning.

Functional requirements

In order for the Flat Tire Monitor to learn
the correct tire inflation pressure,
please do the following:

1. Check the tire inflation pressures in

all tires

2. Compare them with the tire inflation

pressure table, refer to page

116

and correct them, if necessary

3. Initialize the system.

Dynamic Stability Control (DSC)