control BMW 320i 2001 Workshop Manual

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IndexDataTechnologyRepairsCar careControlsOverview
Cruise control
*
To cancel the cruise control When the system is activated, press
and hold button 1. The indicator lamp
stays on. You can use the cruise control
again as desired.
In addition, cruise control is canceled
automatically:
>if the brakes are applied
>if the clutch is depressed or the auto-
matic transmission selector lever is
moved from "Drive" to "Neutral"
>if you exceed or fall below the
programmed speed for an extended
period (by depressing the acceler-
ator, for example).
To resume the stored settingPress button 4:
The vehicle accelerates to and main-
tains the last speed stored. When you
turn the ignition key to position 0, the
stored speed is deleted from the
system's memory and the system is
deactivated.
To deactivate the system When the cruise control has been
canceled, press button 1 again.
The indicator lamp goes off and the
stored speed is canceled.

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1 Odometer You can activate the displays shown in
the illustration with the ignition key in
position 0 by pressing the button in the
instrument cluster (arrow).2 Trip odometerTo reset the trip odometer to zero,
press the button (arrow) with the igni-
tion key in position 1 and up.460us144
Avoid engine speeds in the red warning
zone of the gauge.
To protect the engine, the fuel supply is
automatically interrupted in this zone;
you will notice a loss of power.460us079
Indicates the current fuel consumption
in mpg (in l/100 km on Canadian vehi-
cles). You can check your current
driving style to see whether it is condu-
cive to economy and minimum exhaust
emissions.
When the vehicle is stationary, the
display goes to "Maximum" (zero on
Canadian models).460us080
Odometer Tachometer Energy Control

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IndexDataTechnologyRepairsCar careControlsOverview
Fuel gauge Temperature gauge Service Interval Display When you switch on the ignition, the
indicator lamp comes on briefly to
confirm that the system is stationary.
Once the indicator lamp begins to light
up continuously, there are still approx.
2 gallons (8 liters) of fuel in the fuel
tank.
Tank capacity: refer to page 195.
If the tilt of the vehicle varies (extended
driving in mountainous areas, for
example), there may be slight fluctua-
tions of the needle.
Fill the fuel tank well before it is
empty. Driving to the last drop of
fuel can result in damage to the engine
and/or the catalytic converter.<460us081
BlueThe engine is still cold. Drive at
moderate engine and vehicle speeds.RedWhen you switch on the ignition, the
indicator lamp comes on briefly to
confirm that the system is operational.
If the lamp comes on while operating
the vehicle: the engine is overheated.
Stop and switch the engine off immedi-
ately and allow it to cool down.Between the blue and red zonesNormal operating range. It is not
unusual for the needle to rise as far as
the edge of the red zone in response to
high outside temperatures or severe
operating conditions. Checking coolant
level: refer to page 142.460de082
Remaining distance for serviceThe displays shown in the illustration
appear for a few seconds from ignition
key position 1 or after the engine is
started.
The next service due appears with the
message OILSERVICE or INSPECTION,
together with the remaining distance
before the service is due.
The computer bases its calculations of
the remaining distance on the previous
driving style.
A flashing message and a "Ð" in front of
the number mean that the service
interval has already been exceeded by
the distance shown on the display.
Please contact your BMW center for an
appointment.460us112

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The following information and/or condi-
tions are indicated using symbols,
starting with the ignition key position 2,
until the condition has been corrected.
1 Inspect the low beam and high beam
headlamps, as well as the side lamps
2 Door open
3 Luggage compartment lid open
4 Check brake and tail lamps.
After the completion of a trip and when
the driver's door is opened, an acous-
tical signal is given for "Lamps on" if the
lamps have not been switched off.
When you open the driver's door after
stopping with the lights still on, a
warning signal sounds for LIGHTS ON.
460de083
If you wish to have a permanent time
display, you can make this adjustment
in the radio display (refer to the Radio
Owner's Manual).
You can adjust the clock and the time
display in the car radio as follows.
AdjustmentsFrom ignition key position 1.
To set ahead: turn the right knob to the
right.
To set back: turn the right knob to the
left.
The adjustment speed will increase the
longer you continue to hold the knob.
To change the display mode: press the
knob briefly.
Every time you press the knob, the
clock display alternates between the
12-hour or 24-hour mode.
In ignition key position 0: the time is
displayed for a few seconds after you
press the left button (refer to
"Odometer" on page 74).460us078
Check Control Clock

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IndexDataTechnologyRepairsCar careControlsOverview

Computer

*
Mode selection

From ignition key position 1, you can
call up information from the computer
using the button in the turn signal lever.
By pressing the button briefly in the
direction of the steering column, you
can call up a new function for display.
The displays appear in the following
order:
Time of day, outside temperature,
average fuel consumption, cruising
range, average vehicle speed.
The function that was last selected will
be displayed when the ignition is
switched on.460de084

Outside temperature

You can change the units of measure-
ment for the outside temperature
display (

6

/

7

) by pressing the right-
hand reset button in the instrument
cluster when the temperature display is
active.
460us146

Ice warning

If the outside temperature drops to
approx. +37.5

7

(+3

6

), the computer
switches automatically to the outside
temperature display. In addition, a
signal sounds as a warning and the
display flashes for a brief period.
The warning is repeated whenever the
temperature has reached at least
+43

7

(+6

6

) following the last
warning and then drops back to
+37.5

7

(+3

6

).
The ice warning does not alter the
fact that surface ice can form at
temperatures above +37.5

7

(+3

6

),
on bridges or shaded road surfaces, for
instance.

<

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IndexDataTechnologyRepairsCar careControlsOverview
The conceptThe PDC assists you when you back
into a parking space. A signal warns
you of the distance to an obstacle. To
do this, four ultrasonic sensors in the
rear bumper measure the distance to
the nearest object. The monitoring
range of the two corner sensors
extends to approx. 2 feet (60 cm)
behind the bumper. The two center
sensors cover a distance of approx.
4.9 feet (1.50 meters).
The system starts to operate automati-
cally about one second after you select
reverse with the ignition key in position 2.
PDC is deactivated when you shift back
out of reverse.
Acoustical signalsThe distance to the nearest object is
indicated by a tone sounding at various
intervals. As the distance between
vehicle and object decreases, the inter-
vals between the tones become
shorter. A continuous warning tone
sounds if the distance to a recognized
object is less than 1 foot (30 cm).
The warning signal is canceled after
approx. three seconds if the distance to
the obstacle remains constant during
this time (if you are moving parallel to
a wall, for instance).
System malfunctions will be indicated
by a continuous high-pitched tone
when the system is activated the first
time. Please refer the problem to your
BMW center.The PDC does not remove the
driver's personal responsibility for
evaluating the distance between the
vehicle and any obstacles. Even when
sensors are involved, there is a blind
spot in which objects cannot be
detected. This applies especially in
those cases where the system
approaches the physical limits of ultra-
sonic measurement, as occurs with tow
bars and trailer couplings, and in the
vicinity of thin and painted objects.
Certain sources of sound, such as a
loud radio, could drown the PDC signal
tone.<
Keep the sensors clean and free
of ice or snow in order to ensure
that they continue to operate effec-
tively.
Do not apply high-pressure spray to the
sensors for a prolonged period of time.
Maintain an adequate distance of more
than approx. 4 inches (10 cm).<
Park Distance Control (PDC)
*

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ASC+T The conceptThis system enhances driving stability
and traction, especially when you are
just starting off, accelerating or on
curves.
ASC+T recognizes the danger present
in traction loss and will increase driving
stability and traction by reducing the
engine's output, and if necessary, by
applying the brakes to the rear wheels.
ASC+T is available as soon as the
engine starts up.
Indicator lamp
The indicator lamp in the instru-
ment cluster goes out shortly
after you switch on the ignition.
Refer to pages 21, 22.
Indicator lamp flashes:
ASC+T controls the drive and braking
forces.
If the indicator lamp fails to go out after
the engine is started, or comes on
during normal driving and stays on:
There is a system malfunction or the
system was deactivated with the
button. Consequently, interventions to
increase driving stability (as described
in the preceding column) are not avail-
able. However, you can still drive the
vehicle perfectly well without ASC+T.
Please consult your BMW center in the
event of a malfunction, refer to
pages 21, 22.
Deactivating the ASC+TPress the button; the indicator lamp
comes on and stays on.
The illustration shows the arrangement
of the buttons if the vehicle is fully
equipped. This may vary, depending on
the equipment actually installed.
In the following rare situations, it may
be advisable to deactivate the ASC+T
for a brief period:
>When rocking the vehicle or starting
off in deep snow or on loose
surfaces.
>When driving with snow chains.
Refer also to page 122.
To maintain vehicle stability,
always drive with the ASC+T
switched on whenever possible.<460de312

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IndexDataTechnologyRepairsCar careControlsOverview
ASC+TReactivate the 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. We therefore urge you to
avoid using the additional safety margin
of the system as an excuse for taking
risks.<
For additional details concerning
ASC+T, please refer to the chapter
"Advanced technology" on page 179.

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DSC
* Ð BMW 320i, 325i, 330i
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 keep the car on a steady
course by reducing the engine spped
and brake applications to the individual
wheels.
The DSC is operational every time you
start the engine. DSC contains the
functions of ADB and CBC, refer to
page 119.
The ADB (automatic differential braking)
copies the function of conventional
differential and transverse lock through
brake intervention, and increases trac-
tion 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 on the instru-
ment panel will go out shortly
after the ignition has been
started. Refer to pages 21, 22.
If the indicator lamp flashes:
DSC controls the drive and braking
forces.
The indicator lamp stays lit:
DSC has been switched off by the
button; ADB is operational.
ADB intervention is not indicated.
The indicator lamp and the
brake warning lamp stay lit:
DSC, ADB and DBC have been
switched off via the button or
are defective.
Indicator and warning lamps for
Canadian models.
The vehicle will remain completely
operational, however, without DSC. In
the event of a fault, please see your
BMW center. Refer to pages 21, 22.
Switch off the DSC/activate the
ADBPress the DSC button briefly; the indi-
cator lamp comes on and stays on.
The DSC has been switched off; ADB is
operational.
In the following exceptional circum-
stances, it may be effective to deacti-
vate the DSC for a short period:
>when rocking the vehicle or starting
off in deep snow or on loose surfaces
>when driving on snow-covered
grades, in deep snow, or on a snow-
covered surface that has been
packed down from being driven on
>or when driving with snow chains.
Refer also to page 122.
The gain in traction is achieved by a
reduction in stabilizing intervention.460de313

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IndexDataTechnologyRepairsCar careControlsOverview
DSC
* Ð BMW 320i, 325i, 330i
Switch the DSC and ADB offHold the DSC button down for at least
3 seconds. The indicator and the yellow
brake warning lamps will remain on the
entire time.
In this case, no interventions to
increase stability and traction for engine
and brakes are carried out.
To maintain vehicle stability,
always drive with the DSC on
whenever possible.<
Switch the DSC and ADB back onPress the button again; the indicator
lamp or the indicator lamps will go out.
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. We therefore urge you to
avoid using the additional safety margin
of the system as an excuse for taking
risks.
Whenever the ADB has been activated,
the DSC is switched off and will not
perform any stabilizing intervention.
Do not make any modifications to the
DSC system. Allow only authorized
technicians to perform work on the
DSC.<
For additional details concerning DSC,
please refer to the chapter "Advanced
technology" on page 179.