Index BMW 325Ci CONVERTIBLE 2001 E46 Service Manual

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IndexDataTechnologyRepairsCar careControlsOverview
ASC+T DSC*Reactivating ASC+TPress the button again; the indicator
lamp goes out.
The laws of physics cannot be
repealed, even with ASC+T. It will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.<
For additional details concerning
ASC+T, please refer to the chapter
"Advanced Technology" on page 189.
The conceptDSC maintains vehicle stability, even in
critical 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
understeering or oversteering, and, as
far as is possible within the laws of
physics, helps keeping the car on a
steady course by reducing the RPMs
and brake applications to the individual
wheels.
The DSC is operational every time you
start the engine. DSC includes the
functions of ADB and CBC, refer to
page 123.
The ADB (Automatic Differential
Braking) copies the function of conven-
tional differential and transverse lock
through brake intervention, and
increases traction whenever conditions
merit, e. g. when driving on snow-
covered roads.
If the DSC is switched off the ADB will
still be in ready mode.
Indicator lamp
The indicator lamp in the instru-
ment cluster goes out shortly
after you switch on the ignition.
Refer to page 21, 22.
Indicator lamp flashes:
DSC controls the drive and braking
forces.
The indicator lamp stays lit:
DSC has been switched off via the
button; ADB is operational.
ADB control intervention is not indi-
cated.
The indicator and the brake
warning lamps will remain on
the continuously:
The DSC, ADB and DBC have
been switched off via the button
or are defective.
The vehicle will remain completely
operational, however, without DSC. In
the event of a fault, please see your
BMW center. Refer to page 21, 22.
Indicator and warning lamps for
Canadian models.

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Tire Pressure Control (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 (page 28)
and make corrections if necessary.
Then activate the system.
This indicator lamp in the instru-
ment cluster will inform you if
the tire pressure is not correct.
Activate the systemDepending on the type of equipment,
the switch either has the letters RDC on
it or the RDC-symbol.
1 Turn ignition key to position 2 (do not
start the engine).
2 Press the switch 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
sets the current inflation pressure in
the tires as the target 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.46cus046
In the event of loss in tire
pressureIf the inflation pressure has dropped
significantly over a long period of time
(which is normal for any tire), the indi-
cator lamp will come on with a yellow
lamp.
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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Side lamps
With the switch in this position,
the front, rear and side vehicle
lighting is switched on.
For lighting on one side for parking as
an additional feature, see page 94.
Low beam headlamps
When you switch the ignition off
with the low beam headlamps
on, only the side lamps will
remain on.
"Follow-me-home" lamps:
If you activate the headlamp
flasher after parking the vehicle, the
low-beam headlamps will come on for a
short time. You can also have this func-
tion deactivated.<
460us035
"LIGHTS ON" warningWhen you open the driver's door after
turning the ignition key to position 0,
a buzzer sounds for a few seconds to
remind you that the headlamps have
not been switched off.Daytime running 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.
Turn the rotary dial to adjust the
illumination intensity.
460us036
Side lamps/Low beams
Instrument panel lighting

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Interior lampsReading lamps frontThe reading lamps can be switched on
and off by their respective button,
which is next to them.46cde113
Reading lamps rearIn the hardtop, the reading lamps are
located in the rear as well, refer to
page 130 or 172.
The reading lamps can be switched on
and off by their respective button,
which is next to them.460de155
In order to prevent battery
discharge, all of the lamps in the
vehicle are switched off automatically
approx. 15 minutes after the ignition
key has been turned to position 0.<

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Air conditioner1 Air onto the windshield and onto the
side windows
2 Air for the upper body area
The side rotary dials open and close
the air supply through an infinitely-
variable range; the levers will change
the direction of the air flow. The
center rotary dial controls the
temperature of the air as it flows out.
Refer to page 98
3 Air for the front footwell
There are also vent outlets for the
rear footwell as well
4 Air supply
Heating and ventilation are available
starting with position 1. Refer to
page 98
5 Temperature98
6 Air distribution toward
>the windows
>the upper body
>the footwell
All intermediate settings are possible.
Refer to page 98
7 Rear window defroster98
8 Air conditioner98
9 Recirculated-air mode98

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Air conditionerDraft-free ventilation You can adjust the air outlets for the
upper body area to select the optimum
air flow rates and directions for your
personal requirements:
Use rotary dials 1 to open and close the
air outlets through an infinitely-variable
range. You can adjust the direction of
the air flow with levers 2.
Set the outlets so that the air flows past
you and is not directed straight at you.
Rotary dial 3 allows you to mix the air
from the outlets for your upper body
with more or less cool air..460de040
Microfilter An activated-charcoal microfilter, which
traps incoming dust and pollen, has
been installed in your vehicle. Your
BMW center will replace it during regu-
larly scheduled maintenance. A
substantial reduction in air supply indi-
cates that the filter must be replaced
before normal maintenance.
For additional details on the filter
change, refer to page 180.
Rapid ventilation1 Set the blower speed rotary dial for
the air flow rate to position 4.
2 Switch on the air conditioner.
3 Turn the rotary temperature control
completely to the left (blue).
4 Rotary control for air distribution in
position .
5 Open the air outlets for the upper
body.463de018

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IndexDataTechnologyRepairsCar careControlsOverview
Automatic climate control
*
1 Air onto the windshield and onto the
side windows
2 Air for the upper body area
The side rotary dials open and close
the air supply through an infinitely-
variable range; the levers will
change the direction of the air flow.
The center rotary dial adjusts the
temperature of the air as it flows
out, see page 106
3 Air for the front footwell
There are vent outlets for the foot-
well in the rear as well
4 Recirculated air mode/Automatic
recirculated air control (AUC)105
5 Air supply105
6 Temperature104
7 Automatic air distribution104
8 Individual air distribution104
9 Air grill for interior temperature
sensor Ð please keep clear and
unobstructed
10 Display for temperature and air
supply104
11 Defrost windows and remove
condensation105
12 Air conditioner105
13 Rear window defroster78, 106

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Automatic climate control
*
Air supply

By pressing the left or right half
of the button, you can vary the
air supply. By doing this, you switch off
the automatic control of the air supply.
Nevertheless, the automatic air distri-
bution remains unchanged.
When you set the lowest blower speed
by pressing the left half of the button,
all of the displays are canceled: the
blower, heating and air conditioner are
switched off, and the air supply is
stopped. You can reactivate the system
by pressing any button for the auto-
matic climate control.
To defrost the windows and to
remove condensation
This program quickly removes
ice and condensation from the
windshield and side windows.
Air conditioner
The air is cooled and dehumidi-
fied and Ð depending on the
temperature setting Ð rewarmed when
the air conditioner is switched on.
Depending on the weather, the wind-
shield may fog over briefly when the
engine is started.
Use the button to switch the air condi-
tioner off at outside temperatures
below approx. 41 7 (+5 6). This will
help to prevent the windows from
fogging up.
If the windows fog over after switching
the air conditioner off, switch it back
on.
Condensation forms in the air
conditioner system during opera-
tion, that then exits under the vehicle.
Traces of condensed water of this kind
are thus normal.<
Automatic recirculated air control
(AUC)
If there are unpleasant odors or
pollutants in the outside air, you
can temporarily block the air supply
from the outside. The system then
recirculates the air already within the
vehicle. By repeated actuation of the
button, you can select one of three
different operation modes.
>Indicator lamps off: fresh air flows
into the vehicle.
>Left-hand indicator lamp on Ð AUC
mode: the system detects pollutants
in the outside air and responds by
deactivating the outside air supply as
required. The system then recircu-
lates the air already within the vehicle.
Depending on the air quality, the
automatic system then switches back
and forth between outside air supply
and recirculation of the air within the
vehicle.
>Right-hand indicator lamp on: the
supply of outside air is permanently
blocked. The system recirculates the
air already within the vehicle.
If the windows fog over in the
recirculated air mode, switch this
mode off and increase the air supply as
required.<

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The seat cushion and backrest can be
heated with ignition key in position 2.
You can call up different heating modes
by repeatedly pressing the button.
When the three indicator lamps are illu-
minated, the highest heating mode is
activated. One lamp indicates the
lowest heating mode. The temperature
is regulated with a thermostat in each
mode.
You can also switch the higher heating
modes off directly:
Press the button and hold it slightly
longer.46cus047
To openPull the handle and the lamp comes on.ClosingFold up cover.To lockUse one of the master keys. A master
key must also be used for unlocking.
If you turn over only your door and
ignition keys for valet parking
(refer to page 32), for example, access
to the glove compartment and to the
luggage compartment is not possible.<462de235
To prevent injury in the event of
a crash, close the glove compart-
ment immediately after use.<
Rechargeable flashlightThe flashlight is located on the left-
hand side of the glove compartment.
It features integral overload protection
so that it can be left in its holder contin-
uously.
Be sure that the flashlight is
switched off when it is inserted
into its holder. Failure to comply with
this precaution could lead to over-
charging and damage.<
Seat heating
*
Glove compartment