auto BMW 325Ci CONVERTIBLE 2001 E46 Service Manual

80n
Cruise controlTo interrupt 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.
>When you apply pressure to the
clutch pedal, and when you move the
automatic transmission selector lever
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 and the system
is deactivated.
To deactivate the system When the cruise control has been inter-
rupted, press button 1 again. The indi-
cator lamp goes out and the stored
speed is deleted.

81n
IndexDataTechnologyRepairsCar careControlsOverview
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.462us005
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.462us017
Indicates current fuel consumption in
mpg (in l/100 km on Canadian vehicles).
You can check your current driving
style to see whether it is conducive to
economy and minimum exhaust emis-
sions.
When the vehicle is stationary, the
display goes to "Maximum" (zero on
Canadian vehicles).462us018
Odometer Tachometer Energy Control

85n
IndexDataTechnologyRepairsCar careControlsOverview
ComputerIce warning If the outside temperature drops to
about 37.5 7 (+3 6), then the com-
puter will automatically switch to show
the outside temperature. In addition, a
signal sounds as a warning and the
display flashes for a brief period.
This warning will repeat itself whenever
the temperature climbs to at least 43 7
(+6 6) since the last warning, and has
then drops back to 37.5 7 (+3 6).
Ice warnings do not exclude the
possibility that surface ice can still
occur at temperatures above 37.5 7
(+3 6), e. g. on bridges and shady
roads.<
Average fuel consumption If you continue to hold the button on the
turn signal lever, the average fuel
consumption last displayed is recalcu-
lated from that point in time.46cus009
Range The computer bases its calculations
of the cruising range on the previous
driving style and the amount of fuel
remaining.46cus010

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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 range for the
sensors located at both rear corners
ends approx. 2 ft (60 cm) behind the
bumpers. The two center sensors
cover a distance of approx. 4.9 ft
(1.50 meters).
The system starts to operate automati-
cally about one second after you select
reverse with the ignition key in posi-
tion 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
intervals between the tones become
shorter. A continuous tone indicates
the presence of an object less than 1 ft
(30 cm) away.
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 subject the sensors to high-
pressure washers for a prolonged
period of time. Always maintain a
distance of more than 4 in (10 cm).<
Park Distance Control (PDC)
*

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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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IndexDataTechnologyRepairsCar careControlsOverview
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.<

94n
High beams/Parking lamps
Fog lamps

Interior lamps
1 High beams (blue indicator lamp)
2 Headlamp flasher (blue indicator
lamp)
3 Parking lampsParking lamp, left or rightAs an additional feature, you can illumi-
nate 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.46cde094
Fog lamps
A green indicator lamp appears
in the instrument cluster to
indicate that the fog lamps are
on.
460us038
The interior lamps operate automati-
cally.To switch the interior lamps on
and off manuallyPress the button briefly.
If you want the interior lamps to remain
off all the time, press and hold the
button for approx. 3 seconds.
To revert to normal operation, press the
button briefly.Footwell lampsThe footwell lamps operate in the same
way as the interior lamps.46cde026

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IndexDataTechnologyRepairsCar careControlsOverview
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.<

98n
Air conditionerAir 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 posi-
tion 0, the blower and the heater are
switched off. By using position 0, you
can totally block the interior ventilation
outlets 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. The "6 o'clock" setting is recom-
mended as a normal setting (refer also
to the illustration and overview on
page 96).
Rear window defroster
When the rear window defroster
is activated, the indicator lamp
comes on. The rear window defroster
switches off automatically. Refer to
page 78.
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, 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
blocking the outside air. The system
then 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.<< < <

102n
Automatic climate control
*
46cus021