BMW 325Ci 2003 Owners Manual

91
Under these special circumstances
traction is increased by deactivating the
control systems that enhance traction
under normal conditions.To switch DSC and ADB offHold the DSC button down for at least
3 seconds. The indicator lamp and the
yellow brake warning lamps light up
and remain on continuously.
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 DSCPress 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repealed even with DSC. An
appropriate driving style always
remains the responsibility of the driver.
We therefore urge you to avoid using
the additional safety margin of the sys-
tem as an excuse for taking risks.
Whenever the DTC is activated, the
DSC is switched off and 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.<
Dynamic Stability Control (DSC)*
OverviewControlsMaintenanceRepairsDataIndex
handbook.book Page 91 Wednesday, July 31, 2002 9:29 AM

92
Tire Pressure Monitor (TPM)*The conceptTPM monitors the tire pressures at all
four tires even while the vehicle is mov-
ing. The system provides an alert when-
ever the inflation pressure drops signifi-
cantly below the specified pressure in
one or more tires.
This indicator lamp in the instru-
ment cluster informs you when
the tire pressure deviates from
the target values.
Initializing the systemInitializing is necessary to familiarize the
system with the correct inflation pres-
sures.
Repeat this process after tire replace-
ment, tire rotation or any changes in tire
inflation pressure.
1. Check the tire inflation pressures in
all the tires, comparing them with the
inflation pressure chart on page 25,
and adjust them if necessary
2. Turn the ignition key to position 2, do
not start the engine
3. Press the button long enough for the
yellow indicator lamp in the instru-
ment cluster to light up for a few sec-
onds
4. After a few minutes' driving time,
TPM adopts the current inflation
pressures in the tires as the refer-
ence values to be monitored.In the event of loss in inflation
pressureIf the inflation pressure has dropped
significantly over a long period of time,
which is normal for any tire, the yellow
indicator lamp will come on.
This alerts you to have the tires inflated
to the specified pressures as soon as
possible.
If you are prompted to check the
tire pressure shortly after a cor-
rection has been made, this indicates
that the corrected values were not
valid. Please check the inflation pres-
sure again and make corrections
according to the inflation pressure
table. Then reinitialize the system.<Flat tireIf there is a tire failure with loss of pres-
sure, the red warning lamp will come
on. This visual alert is accompanied by
an acoustic warning signal.
handbook.book Page 92 Wednesday, July 31, 2002 9:29 AM

93
If this occurs, reduce vehicle speed
immediately and stop the vehicle in a
safe location. Avoid hard brake applica-
tions. Do not oversteer. Replace the
defective tire, refer to page 151.
The space-saver spare tire is pro-
vided for temporary use only in the
case of a tire failure. It does not have
TPM electronics and is not monitored.
The spare tire that has the same dimen-
sions as the tires already mounted on
the vehicle is equipped with the neces-
sary TPM electronics and will also be
monitored once the tire has been
mounted and the system initialized.<
The TPM cannot alert you to
severe and sudden tire damage
caused by external factors.<
Have the tires changed by your
BMW center.
Your BMW center has the information
needed for working with TPM and is
equipped with the necessary special
tools.<System interferenceLocal devices using the same radio fre-
quency can interfere with the TPM.
The yellow indicator lamp will come on
during the malfunction.
The indicator lamp also comes on
>in the event of a system fault
>if a wheel is mounted without the
appropriate TPM electronics
>if, in addition to the spare tire, addi-
tional wheels with TPM electronics
are being carried on board.
Please refer the problem to your BMW
center.
Flat Tire Monitor*The conceptAs you drive, the Flat Tire Monitor
keeps track of pressure levels in all four
tires in order to detect and warn of any
substantial pressure loss.
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.
Tire Pressure Monitor (TPM)*
OverviewControlsMaintenanceRepairsDataIndex
handbook.book Page 93 Wednesday, July 31, 2002 9:29 AM

94
Initializing the systemInitializing is necessary to familiarize the
system with the correct inflation pres-
sures.
Repeat this process after any changes
in tire inflation pressure, tire rotation or
replacement. Do not carry out further
system initialization after adjusting the
inflation pressure and letting the system
"learn" the correct pressures.
1. Check the tire inflation pressures in
all the tires, comparing them with the
inflation pressure chart on page 25
and adjusting their pressure if neces-
sary
2. Turn the ignition key to position 2
3. Press the button until the yellow indi-
cator lamp in the instrument cluster
lights up. After a little while, the indi-
cator lamp will go out by itself
4. After a few minutes' driving time, the
Flat Tire Monitor adopts the current
pressure levels as the reference and
from that point on, can detect and
report a flat tire.
To activate/deactivate the systemThe Flat Tire Monitor automatically
assumes operation whenever you turn
the ignition key to position 2. Unless
manually deactivated, it is always on
during normal vehicle operation.
To deactivate the system: press the
button, the yellow indicator lamp comes
on.
To activate the system: press the but-
ton again, the indicator lamp goes out.
You should deactivate the system
before driving with snow chains, as the
chains can generate spurious warnings
and/or prevent the system from detect-
ing actual pressure loss.
Flat Tire Monitor*
handbook.book Page 94 Wednesday, July 31, 2002 9:29 AM

95
Flat tire
The red warning lamp in the
instrument cluster lights up to
warn of pressure loss and tire
failure. This visual alert is accompanied
by an acoustic warning signal. Reduce
your speed immediately, and steer and
brake gently as you bring the vehicle to
a stop.
To reset the warning lamp: after replac-
ing the damaged tire you will need to
reset the red warning lamp manually:
maintain pressure on the Flat Tire Moni-
tor button until the warning lamp goes
out. Then reinitialize the system.
The Flat Tire Monitor cannot pro-
vide you with advance warning of
sudden and severe tire damage caused
by external factors.
The system also does not detect the
gradual and minor loss of pressure that
all tires display over extended periods
of time.<
Check tire inflation pressures on a
regular basis, correcting them as
necessary, refer to page 25.
The system may respond to operation
on slippery or snow-covered road sur-
faces with false warnings or delays in
detecting actual pressure loss.
Performance-oriented driving, slip at
the drive wheels and high rates of lat-
eral acceleration can also increase the
time that the Flat Tire Monitor requires
to detect a flat.<
System malfunctionsThe yellow indicator lamp in the instru-
ment cluster lights up and remains on
until the problem is corrected.
Please refer the problem to your BMW
center.
Flat Tire Monitor*
OverviewControlsMaintenanceRepairsDataIndex
handbook.book Page 95 Wednesday, July 31, 2002 9:29 AM

96Lamps
Parking lamps/Low beamsParking lamps
The front, rear and side vehicle
lighting is switched on. You can
use the parking lamps to signal
the position of the vehicle when it is
parked. For lighting on one side for
parking as an additional feature, refer to
page 97.
Low beams
When the ignition is switched off
while the low beams are on, the
headlamps go out and only the
parking lamps remain on.
Follow me home lampsWhen you activate the headlamp
flasher after parking the vehicle with the
lamps turned off, the low-beam head-
lamps will come on for a short time.
You can also have this function
deactivated.<LIGHTS ON warningWhen you open the driver's door after
having turned the ignition key to posi-
tion 0, you will hear an acoustic signal
for a few seconds to remind you that
the lamps have not been switched off.Daytime driving lamps*If you desire, the light switch can be left
in the second position: When the igni-
tion is switched off, the external lighting
is also switched off.
You can have the activation set-
tings for the daytime driving lamps
programmed on your vehicle.<
Automatic headlamp control*
When the switch is set to this
position the system automati-
cally activates and cancels the
low beams in response to changes in
ambient light – in tunnels, at dusk, etc. –
and in the event of rain and snow.
The vehicle's external lights
remain on constantly when you
switch on the front fog lamps after the
headlamps have come on automati-
cally.<
Automatic headlamp control can-
not serve as a substitute for the
driver's judgement in determining when
the vehicle lights should be switched
on. For example, the sensors are not
able to detect fog. To avoid safety risks,
you should respond to these kinds of
low-visibility situations by switching the
headlamps on manually.<
You can have the sensitivity of
your vehicle's automatic head-
lamp control adjusted.<
handbook.book Page 96 Wednesday, July 31, 2002 9:29 AM

97
Instrument lightingTurn the rotary dial with the parking/
low beam lamps on to adjust the illumi-
nation intensity.
High beams/Standing lamps1High beams – blue indicator lamp
2Headlamp flasher – blue indicator
lamp
3Standing lampsStanding lamps, left or rightAs an additional feature, you can illumi-
nate your vehicle on either side for
parking:
With the ignition key in position 0,
engage the lever in the appropriate
turn-signal position.
OverviewControlsMaintenanceRepairsDataIndex
handbook.book Page 97 Wednesday, July 31, 2002 9:29 AM

98
Fog lamps*Front fog lamps
The green indicator lamp in the
instrument cluster lights up to
indicate that the front fog lamps
are on.
If the automatic headlamp control
is on, the low beams will come on
automatically whenever you activate
the front fog lamps.<
Interior lampsThe interior lamps operate automati-
cally.To switch the interior lamps on
and off manuallyPress button 1 briefly:
If you want the interior lamps to remain
off all the time, press and hold the but-
ton for approx. 3 seconds.
Press the button briefly to revert to nor-
mal operation.Front reading lamps*Switch on and off with the button 2
adjacent to each lamp.
Rear reading lamps*Rear reading lamps are also provided
for rear seat passengers when the
hardtop is installed, refer to page 125.
Switch on and off with the button adja-
cent to each lamp.
In order to prevent battery dis-
charge, all of the lamps in the
vehicle are automatically switched off
approx. 15 minutes after you turn the
ignition key to position 0.<
handbook.book Page 98 Wednesday, July 31, 2002 9:29 AM

99
OverviewControlsMaintenanceRepairsDataIndex
handbook.book Page 99 Wednesday, July 31, 2002 9:29 AM

100Controlling the climate for pleasant driving
Air conditioning
handbook.book Page 100 Wednesday, July 31, 2002 9:29 AM