BMW M3 CONVERTIBLE 2002 E46 Manual Online

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OverviewControlsMaintenanceRepairsDataIndex
Dynamic Stability Control (DSC)

The concept

DSC 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 also recognizes
unstable driving conditions such as
under- or oversteering on curves, and
keeps the vehicle on a steady course
by using the engine and brake system
to intervene at the different wheels,
doing only what it can within the laws of
physics, of course.
The system starts up automatically
each time you start the engine.The laws of physics cannot be
repealed, even with DSC. The
results of driving irresponsibly rest with
the driver. We therefore urge you to
avoid using the additional safety margin
of the system as an excuse for taking
risks. Do not make any modifications to
the DSC system. Allow only authorized
technicians to perform service proce-
dures on the DSC.<
Indicator lamp
The indicator lamp in the instru-
ment cluster will go out shortly
after the ignition has been
switched on, refer to page 18.
>Indicator lamp flashes: the system is
active and is controlling the drive
torque based on driving conditions
>If the indicator lamp fails to go out
after the engine has been started, or
if it comes on during normal driving
and stays on: the system has been
deactivated via the button or is
defective. You can continue to drive
the vehicle normally, but without
DSC. Please consult your BMW
center for repairs.

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Dynamic Stability Control (DSC) Flat Tire MonitorTo deactivate the systemPress the button; the indicator lamp
comes on and stays on.
The vehicle does not execute the
stability-enhancement and traction-
control functions when DSC is deacti-
vated.
We recommend that you deactivate the
system for increased traction:
>when rocking the vehicle or starting
off in deep snow or on loose surfaces
>or when driving with snow chains.
To maintain vehicle stability,
always drive with the system
switched on whenever possible.<
To reactivate the systemPress the button again; the indicator
lamp goes out.Dynamic Brake Control (DBC)DBC is an integral component of the
DSC system.
If you apply the brakes rapidly, this
system automatically generates
maximum braking force boost and thus
helps to achieve the shortest possible
braking distance in "panic braking" situ-
ations. All of the benefits of the ABS
system are exploited under these
circumstances.
Do not reduce the pressure on the
brake pedal for the duration of the
brake application. When the brake
pedal is released, the DBC is deacti-
vated.
The conceptThe Flat Tire Monitor keeps track of the
inflation pressures in your tires as you
drive. The system detects whenever the
inflation pressure in a tire drops off
significantly.
Controlling the tire pressure is based
on monitoring the rpms that the tires
have relative to each other. A flat tire is
detected and reported because the
rpms suddenly deviate drastically from
one another.

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OverviewControlsMaintenanceRepairsDataIndex
Flat Tire MonitorInitializing 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.
1. Check the tire inflation pressure in all
the tires, comparing them with the
inflation pressure table (page 25),
and adjusting their pressure if neces-
sary
2. Turn the ignition key to position 2
3. Press button as long as you need to
until the indicator lamp in the instru-
ment cluster lights up. After a little
while, the indicator lamp will go out
by itself
4. After a few minutes, the Flat Tire
Monitor will accept the current infla-
tion pressure as the value to be
measured against, and from that
point on, can detect and report a flat
tire.
Activating/deactivating the
systemThe system is automatically activated in
ignition key position 2 and conse-
quently is on whenever the vehicle is
operated.
To deactivate the system: tap the
button, the indicator lamp will light up
yellow.
To activate the system: tap the button
again; the indicator lamp goes out.
Deactivate the system when snow
chains are mounted, since false warn-
ings and undetected losses in pressure
are possible under these kinds of
conditions.

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Flat Tire Monitor
M Engine dynamics control
Flat tire
The indicator lamp in the instru-
ment cluster will light up red in
the event of a flat tire with
ensuing loss in pressure. In addition, an
acoustic signal is sounded. To come to
an immediate stop, reduce speed, while
avoiding any sudden, jerky braking or
steering maneuvers.
Fix the flat tire using the M Mobility
system (refer to page 132).
Resetting the indicator lamp: the red
indicator lamp has to be switched off
manually after putting on a new wheel.
At this point, hold the Flat Tire Monitor
button down until the indicator lamp
goes out. Reinitialize the system after-
ward.
The Flat Tire Monitor cannot alert
you to severe and sudden tire
damage caused by external factors.
Another factor which the Flat Tire
Monitor does not recognize is the
balanced and very gradual pressure
loss that takes place in all tires over an
extended period of time.<
Check the tire inflation pressure
on a regular basis and correct if
necessary, refer to page 24.
Under certain circumstances, there
may be false warnings or a delayed
detection of losses in pressure when
driving on snow-covered or slippery
road surfaces.
Performance-oriented driving (slip at
the drive wheels, high levels of lateral
acceleration) can also delay the
appearance of status reports in the Flat
Tire Monitor's display panel.<
System malfunctionAs long as there is still a malfunction,
the indicator lamp in the instrument
cluster will stay lit up yellow.
Please contact your BMW center for
additional information.
The system (Sport mode identification)
will cause the engine to respond spon-
taneously to the motion of the acceler-
ator pedal. Activating/deactivating
sport-mode identificationActivating: with the key in ignition key
position 2, press the sport button. The
indicator lamp will light up.
The vehicle may gain speed
without any additional pressure on
the accelerator pedal when the system
is activated.<
Deactivating: press the sport button
again; the indicator lamp will go out.
The sport mode is deactivated every
time the engine is started.

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OverviewControlsMaintenanceRepairsDataIndex
Parking lamps
With the switch in this position,
the front, rear and side vehicle
lighting comes on. You can use
the parking lamps for parking. For
lighting on one side for parking as an
additional feature, refer to page 86.
Low beams
When you switch the ignition off
with the low beam headlamps
on, only the parking lamps will
remain on.
"Follow me home" lamps: When y
ou activate the headlamp
flasher after parking the vehicle and
switching off the lights, the low beams
will come on for a brief period. You may
also have this function deactivated if
you wish.<
"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
that the lamps have not been switched
off.Daytime driving lamps
*
The headlamps are automatically
switched on for daytime driving at
ignition key position 2.
Automatic headlight control
*
When the switch is set to this
position the system automati-
cally switches the low beams on
and off in response to changes in
ambient light ( in tunnels, at dusk, etc.)
as well as rain and snow.
The vehicle's external lamps
remain on constantly when you
switch on the front fog lamps after the
headlamps have come on automati-
cally.<
Automatic headlight control
cannot serve as a substitute for
the personal judgement in determining
when the lamps should be switched on.
The sensors cannot, for example
"recognize" fog. In such situations
switch on the lamp manually, as other-
wise a safety hazard will result.<
You can have the sensitivity of
your vehicle's automatic head-
light control adjusted.<
Parking lamps/Low beams

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Instrument lighting
High beams/Standing lamps
Fog lamps

Turn the rotary dial to control the
lighting when the parking or low beam
lamps are on.
1 High beams (blue indicator lamp)
2 Headlamp flasher (blue indicator
lamp)
3 Standing lampsStanding lamps, left or rightAs an additional feature, you can
illuminate your vehicle on either side
for parking, if you wish to do so:
With the ignition key in position 0, push
the lever in the appropriate direction.
The lever engages in the turn signal
position.
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 headlight control
is on, the low beams will come on
automatically whenever you switch on
the fog lamps.<

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Interior lamps Reading lampsThe interior lamps operate automati-
cally.Switching the interior lamps on
and offPress the button 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 adja-
cent to each lamp.
Rear reading lampsWith the hardtop
* reading lamps are
also located in the rear. Switch on and
off with the button adjacent 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 conditioner1 Air onto the windshield and onto the
side windows
2 Airflow for the upper body89
3 Front footwell ventilation4 Air supply (blower)89
5 Temperature89
6 Air distribution897 Rear window defroster89
8 Air conditioner89
9 Recirculated-air mode89

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Air conditionerAir supply (blower)
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 posi-
tion 0, the blower and the heater are
switched off. By using position 0, you
can totally block the air supply by
pressing the button for the recirculated-
air mode.
Temperature
In order to increase the
temperature of the passenger
compartment, turn it to the
right (red). Temperature regu-
lation will keep the interior temperature
you have selected constant.
Air distribution
You can direct air to flow onto
the windows , toward the
upper body and into the
footwell . All intermediate
settings are possible. In the setting,
there is a low flow of air onto the
windows to keep them free of conden-
sation.
Rear window defroster
With the convertible top closed
or with the hardtop
* mounted,
press the button. The indicator lamp
remains on. The rear window defroster
switches off automatically.
The rear defroster automatically
assumes operation within 5
minutes after the engine is started at
outside temperatures below 40 7
(4 6).<
Air conditioner
The air is cooled and dehumidi-
fied and Ð depending on the
temperature setting Ð rewarmed when
the air conditioner system is switched
on.
Depending on the weather, the wind-
shield may fog over briefly when the
engine is started.
Condensation forms in the air
conditioner 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
excluding the supply of outside air. The
system then recirculates the air
currently within the vehicle.
If the windows fog over in the
recirculated-air mode, switch the
recirculated-air mode off and increase
the air supply as required.
<< < <

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Air conditionerDraft-free ventilation You can adjust the blower controls for
the upper body area to select the
optimum airflow rates and directions for
your personal requirements:
1 Rotary dials for opening and closing
the vent outlets through an infinitely
variable range
2 Lever for adjusting airflow direction
3 With the rotary dial you can adjust the
temperature of the outgoing air.
>Turn toward blue Ð colder
>Turn toward red Ð warmer.
MicrofilterAn microfilter, which traps incoming
dust and pollen, has been installed in
your vehicle. Your BMW center will
replace it during routine maintenance.
A substantial reduction in airflow indi-
cates that the filter needs to be
replaced early.
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.