differential BMW 320i SEDAN 2002 E46 Owner's Manual

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ASC+T DSC
* Ð BMW 320i, 325i, 330i
To switch 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repealed, even with ASC+T. An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 rpms 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).
ADB relies on selective braking applica-
tions at the drive wheels to furnish the
functionality of a conventional limited-
slip differential for enhanced traction in
critical driving conditions such as those
encountered on snow-covered road
surfaces, etc.
The ADB is operational when DSC is
switched off.
Indicator lamp
The indicator lamp on 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 switched off manually;
ADB is operational.
ADB control intervention is not indi-
cated.
The indicator and the brake
warning lamps remain on
continuously:
The DSC, ADB and Dynamic
Brake Control (DBC) have been
switched off 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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DSC Ð BMW 325xi, 330xiThe 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 rpms and brake
applications to the individual wheels.
The DSC is operational every time you
start the engine. DSC includes the
functions of ADB-X and CBC.
The Automatic Differential Brake
(ADB-X) enhances traction in critical
situations (such as those encountered
on snow-covered roads) by using
selective braking intervention to replace
the limited-slip functions executed by
the differential and transfer case in
conventional drivetrains.
Indicator lamp
The indicator lamp on 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 switched off manually;
ADB-X is operational.
ADB-X control intervention is not indi-
cated.
If the indicator lamp fails to go out
when you press the DSC button,
this indicates a malfunction in the DSC
and ADB-X systems; the system is
deactivated, and the stability enhance-
ment functions described on the left are
no longer available.<
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.
To deactivate DSCPress the DSC button briefly, the indi-
cator lamp comes on and remains lit.
DSC is now off, and ADB-X reverts to
its maximum torque-transfer mode.
Under the following special circum-
stances you may find it useful to deacti-
vate DSC manually for a brief period:
>When rocking the vehicle or starting
off in deep snow or on loose surfaces
>When driving with snow chains.
To maintain vehicle stability,
always drive with the DSC acti-
vated whenever possible.<

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To ensure that your vehicle continues to
provide maximum economy throughout
an extended service life, we request
that you devote careful attention to the
following instructions.
Engine and differentialThe first 1,200 miles (2,000 km):
Attempt to constantly vary both vehicle
and engine speed during these initial
miles while remembering to avoid
engine speeds in excess of 4,500 rpm
and/or vehicle speeds of over 100 mph
(160 km/h):
Always obey all official speed limits.
Refrain from using full throttle and avoid
pressing the accelerator beyond the
kickdown point.
After the initial 1,200 miles (2,000 km)
you can gradually increase both engine
and vehicle speeds.
Please remember to observe these
same break-in procedures if either the
engine or the differential is replaced
later in the course of the vehicle's
service life.
TiresOwing to technical factors associated
with their manufacture, tires do not
achieve their full traction potential until
an initial break-in period has elapsed.
We thus ask you to drive with extra care
during the first 200 miles (300 km).
Always obey all official speed limits.
When the vehicle is operated on
wet or slushy roads, a wedge of
water may form between the tire and
the road surface. This phenomenon is
referred to as aquaplaning, or hydro-
planing, and can lead to partial or
complete loss of traction, vehicle
control and braking effectiveness.
Reduce your speed on wet roads. elapse before the brake pads and
rotors achieve the optimal pad-surface
and wear patterns required for trouble-
free operation and an extended service
life later on.
To break in the separate parking brake
drums, apply the parking brake lightly
when coasting to a standstill (at a traffic
signal, for instance); use caution to
avoid posing a danger to other road
users. You can prevent corrosion in the
drums by periodically repeating this
procedure.
The rear brake lamps do not come
on when you apply the parking
brake.
Vacuum for the brake system servo unit
on your BMW is available only when the
engine is running. When you move the
vehicle with the engine off Ð when
towing, for example Ð substantially
higher levels of pedal force will be
required to brake the vehicle. elapse before the clutch starts to
operate at optimum efficiency.
Remember to engage the clutch care-
fully during this initial period.
Break-in procedures

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Engine oilChecking oil level1. Park the vehicle on a level surface
2. Switch the engine off after it has
reached normal operating tempera-
ture
3. After approx. 5 minutes, pull the
dipstick out and wipe it off with a
clean lint-free cloth, paper towel, or
similar material
4. Carefully push the dipstick all the
way into the guide tube and pull it
out again
5. The oil level should be between the
two marks on the dipstick.
As with fuel economy, oil consumption
is directly influenced by your driving
style and vehicle operating conditions.
The oil volume between the two marks
on the dipstick corresponds to approx.
1.1 US quarts (1 liter). Do not fill beyond
the upper mark on the dipstick. Excess
oil will damage the engine.
Adding engine oilWhile you should wait until the level has
dropped to just above the lower mark
before adding oil, you should never
allow the oil level to fall below this
mark.
BMW engines are designed to
operate without oil additives; the
use of additives could lead to damage
in some cases. This is also true for the
manual transmission, the automatic
transmission, the differential, and the
power steering system.<
Recommendation: have the oil changed
at your BMW center.

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Capacities
Notes
Fuel tank
Reserve gal. (liters)
gal. (liters)approx. 16.6 (approx. 63)
approx. 2.1 (approx. 8)Fuel specification, refer to
page 23
Windshield/
Headlamp washer reservoir quarts (liters) approx. 5.6 (approx. 5.3)Specifications, refer to
page 114
Cooling system including
heater circuitquarts (liters) approx. 8.9 (approx. 8.4) Specifications, refer to
page 117
Engine oil and filter change quarts (liters) 320i, 325i, 330i:
approx. 6.9 (approx. 6.5)
325xi, 330xi:
approx. 7.9 (approx. 7.5)BMW High Performance
Synthetic Oil
Specifications, refer to
page 115
Manual and automatic transmission,
transfer box and differential.Ð Lifetime lubricant, no oil change
required

Everything from A to ZA
ABS (Antilock Brake
System)19, 105
Accessories10
Activated-charcoal filter91
Adaptive Transmission
Control (ATC)60
ADB (Automatic Differential
Brake)73
Adding
brake fluid118
coolant117
engine oil115
washer fluid114
Adjusting
head restraints44
lumbar support43
manual seats42
mirrors48
power seat43
steering wheel47
thigh support42
Air conditioning85
temperature settings86
Air distribution86, 89
Air nozzles85 Air outlets,
ventilation85, 88
Air supply86, 89
Airbags18, 49
sitting correctly41
Alarm system36
Antifreeze117
Antilock Brake System
(ABS)19, 105
Anti-theft system36
Aquaplaning104, 105
Armrest92
ASC+T (Automatic Stability
Control plus Traction)72
Ashtray
front95
rear95
ATC (Adaptive Transmission
Control)60
Attach vehicle vacuum
cleaner95
AUC (Automatic recircu-
lated-air control)90
Automatic climate
control88
temperature settings89
Automatic cruise control64
Automatic curb monitor47 Automatic Differential Brake
(ADB)73
Automatic headlight
control82
Automatic recirculated-air
control (AUC)90
Automatic Stability Control
plus Traction (ASC+T)72
Automatic transmission59
Automatic transmission with
Steptronic18, 59
Automatic-dimming feature,
mirrors49
Average consumption70
Average speed70
Axle loads142
B
Backrest, adjusting42
Backup lamps58
bulb replacement127
Battery133
care133
charge current
indicator17
charging133
Belts, safety45
Beverage holder93 Blower86, 89
BMW High Performance
Synthetic Oil116
BMW Maintenance
System119
BMW sports seat
electrical adjustment43
manual adjustment42
Bore140
Bottle holder, refer to
beverage holder93
Brake fluid118
add118
warning lamp17
Brake lamps
bulb replacement127
Brake system104, 106
brake fluid118
brake fluid level106
brake pads106
brake pads, indicator
lamp19
disc brakes106
Break-in procedure104
Bulbs and lamps,
replacement124

A-Z