2002 BMW 325Ci CONVERTIBLE maintenance

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ASC+T Dynamic Stability Control (DSC)
*
Switch the ASC+T back onPress the button again; the indicator
lamp goes out.
The laws of physics cannot be
repealed, even with ASC+T. An
appropriate driving style always
remains the responsibility of the driver.
We therefore urge you to avoid using
the additional safety margin of the
system as an excuse for taking risks.<
The conceptThe Dynamic Stability Control (DSC)
maintains vehicle stability, even in crit-
ical driving situations.
The system optimizes vehicle stability
during acceleration and when starting
from a full stop, as well as optimizing
traction. In addition, it recognizes
unstable vehicle conditions, such as
under- or oversteering, and, as far as is
possible within the laws of physics,
helps keeping the vehicle on a steady
course by reducing the engine speed
and brake applications to the individual
wheels.
DSC is operational every time you start
the engine. DSC incorporates the func-
tionality of the Automatic Differential
Brake (ADB) and the Cornering Brake
Control (CBC).
The Automatic Differential Brake (ADB)
relies on selective braking applications
at the drive wheels to furnish the func-
tionality of a conventional limited-slip
differential for enhanced traction in crit-
ical driving conditions such as those
encountered on snow-covered road
surfaces, etc.
The ADB is in standby mode when DSC
is deactivated.
Indicator lamp
The indicator lamp in the instru-
ment cluster will go out shortly
after the ignition has been
switched on, refer to pages 18, 19.
The indicator lamp flashes:
DSC is actively controlling drive torque
and braking intervention.
The indicator lamp stays lit:
DSC has been deactivated manually;
ADB is operational.
ADB control intervention is not indi-
cated.
The indicator lamp and the
brake warning lamps will remain
on continuously:
The DSC, ADB and DBC have
been deactivated with the
button or are defective.
The vehicle will remain completely
operational, however, without DSC. In
the event of a fault, please consult your
BMW center, refer to pages 18, 19.
Indicator and warning lamps for
Canadian models.

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Tire Pressure Monitor (RDC)
*
The conceptRDC monitors the tire pressures at all
four wheels, even when the vehicle is
moving. The system provides an alert
whenever the inflation pressure drops
significantly below the specified pres-
sure in one or more tires.
In order for the system to learn the
correct tire inflation pressure, check the
inflation pressure in all tires according
to the inflation pressure table on
page 25 and make corrections as
necessary. Then activate the system.
This indicator lamp in the instru-
ment cluster will inform you if
the tire pressure is not correct.
To activate the system1 Turn ignition key to position 2 (do not
start the engine)
2 Press the button long enough for the
yellow indicator lamp in the instru-
ment cluster to light up for a few
seconds.
3 After a few minutes driving time, RDC
adopts the current inflation pressures
in the tires as the reference values to
be monitored.
You will only have to repeat this proce-
dure following a correction of the tire
inflation pressure. Otherwise, RDC
functions automatically when the igni-
tion key is in position 2, and thus oper-
ates whenever the vehicle is driven.
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
correction has been made, this indi-
cates that the corrected values were
not accurate. Please check the inflation
pressure again and make corrections
according to the inflation pressure
table. Then activate the system once
again.<

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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.
Initializing the systemInitializing is necessary to familiarize the
system with the correct inflation pres-
sure.
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 table on page 25,
and adjusting if necessary
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.

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Parking lamps/Low beamsParking lamps
The front, rear and side vehicle
lighting is switched on. You can
use the parking lamps for
parking. For lighting on one side for
parking as an additional feature, refer to
page 88.
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 lamps:
When 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 deacti-
vated.<
LIGHTS ON warningWhenever you open the driver's door
after having turned the ignition key to
position 0, you will hear an acoustic
signal for a few seconds to remind you
if 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 ignition is switched off, the
external lighting is also switched off.
You can have your vehicle's
daytime driving lamps set to
reflect your personal requirements.<
Automatic headlight 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.)
as well as rain and snow.
The vehicle's external lights
remain on constantly when you
switch on the front fog lamps after the
headlights have come on automati-
cally.<
Automatic headlight control
cannot 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 headlights on manu-
ally.<
You can have the sensitivity of
your vehicle's automatic head-
light control adjusted.<

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Interior lampsThe interior lamps operate automati-
cally.Switching the interior lamps on
and off manuallyPress button 1 briefly:
If you want the interior lamps to remain
off all the times, press and hold the
button for approx. 3 seconds.
Press the button briefly to revert to
normal operation.Front reading lamps
*
Switch on and off with the button 2
adjacent to each lamp.
Rear reading lampsRear reading lamps are also provided
for rear seat passengers when the
hardtop is installed, refer to page 110.
Switch on and off with the button adja-
cent to each lamp.
To avoid subjecting the battery to
excessive loads, all of the lamps
within the vehicle are automatically
switched off approx. 15 minutes after
you turn the ignition key to position 0.<

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Air conditioningAir supply
You can select blower speeds
from 1 to 4. The heating and
ventilation become more and
more effective as the air
supply settings are increased. In
position 0, the blower and the heater
are switched off. The outside air supply
is blocked in position 0.
Temperature
In order to increase the
temperature of the passenger
compartment, turn the
temperature control to the
right (red). The temperature of the
incoming air is kept constant.
Air distribution
You can direct the emerging
air toward the windows ,
toward your upper body or
into the footwell . All inter-
mediate settings are possible. In the
setting, there is a low flow of air onto
the windows to keep them free of
condensation.
Rear window defroster
When the rear window defroster
is activated, the indicator lamp
comes on. The rear window defroster
switches off automatically.
The rear window defroster auto-
matically assumes operation
within 5 minutes after the engine is
started at outside temperatures below
approx. 39 7 (+4 6).<
Air conditioning
The air is cooled and dehumidi-
fied and Ð depending on the
temperature setting Ð rewarmed.
Depending on the weather, the wind-
shield may fog over briefly when the
engine is started. Switching on the air
conditioning will reduce condensation
forming on the windows.
Condensation forms in the air
conditioning system during opera-
tion, which then exits under the vehicle.
Traces of condensed water of this kind
are thus normal.<
Recirculated-air mode
You can respond to unpleasant
external odors by temporarily
suspending the supply of outside air.
The system then recirculates the air
currently within the vehicle.
If the windows should fog over in
the recirculated-air mode, switch
it off and increase the air supply as
required.<

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Air conditioningDraft-free ventilationYou can adjust the blower controls for
the upper body area to obtain the
optimum airflow rates and directions for
your personal requirements:
1 Rotary dials for infinitely-variable
opening and closing of the vent
outlets
2 Selector levers for airflow direction
3 Rotary dial 3 allows you to control the
temperature of the airflow from these
outlets as desired.
MicrofilterThe built-in microfilter removes dust
and pollen from the incoming air. Your
BMW center will replace it during
routine maintenance. A substantial
reduction in airflow indicates that the
filter needs to be replaced before
scheduled maintenance.
To defrost windows and remove
condensation1. Set the blower speed control for the
airflow rate to position 4
2. Turn the rotary temperature control
completely to the right (red)
3. Rotary control for air distribution in
position
4. Switch on the rear window defroster
to defrost the rear window.

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Automatic climate control
*
1 Air onto the windshield and the side
windows
2 Air for the upper body area95
3 Air for the footwell
4 Recirculated-air mode/Automatic
recirculated-air control (AUC)955 Air supply94
6 Temperature94
7 Automatic air distribution94
8 Individual air distribution94
9 Interior temperature sensor Ð please
keep clear and unobstructed10 Display for temperature and air
supply94
11 To defrost windows and remove
condensation94
12 Air conditioning94
13 Rear window defroster95