
6n
For your own safety
Use unleaded gasoline only. Fuels
containing up to and including
10% ethanol or other oxygenates with
up to 2.8% oxygen by weight (that is,
15% MTBE or 3% methanol plus an
equivalent amount of co-solvent) will
not void the applicable warranties re-
specting defects in materials or work-
manship. Field experience has indi-
cated significant differences in fuel
quality (volatility, composition, addi-
tives, etc.) among gasolines offered for
sale in the United States and Canada.
The use of poor quality fuels may result
in driveability, starting and stalling
problems especially under certain envi-
ronmental conditions, such as high am-
bient temperature and high altitude.
Should you encounter driveability prob-
lems which you suspect could be
related to the fuel you are using, we
recommend that you respond by
switching to a recognized high-quality
brand.
Failure to comply with these recom-
mendations may result in unscheduled
maintenance.
Follow the relevant safety rules when
you are handling gasoline.
<
Important safety information!
For your own safety, use genuine parts
and accessories approved by BMW.
When you purchase accessories tested
and approved by BMW and Original
BMW Parts, you simultaneously acquire
the assurance that they have been thor-
oughly tested by BMW to ensure opti-
mum performance when installed on
your vehicle.
BMW warrants these parts to be free
from defects in material and workman-
ship.
BMW will not accept any liability for
damage resulting from installation of
parts and accessories not approved by
BMW.
BMW cannot test every product made
by other manufacturers to verify if it can
be used on a BMW safely and without
risk to either the vehicle, its operation,
or its occupants.
Original BMW Parts, BMW Accessories
and other products approved by BMW,
together with professional advice on
using these items, are available from
all BMW centers.
Installation and operation of non-BMW
approved accessories such as alarms,
radios, amplifiers, radar detectors,
wheels, suspension components, brake
dust shields, telephones (including
operation of any portable cellular phone
from within the vehicle without using an
externally mounted antenna) or trans-
ceiver equipment (such as C.B., walkie-
talkie, ham radio or similar) may cause
extensive damage to the vehicle, com-
promise its safety, interfere with the
vehicle's electrical system or affect the
validity of the BMW Limited Warranty.
See your BMW center for additional
information.
Do not use key or remote to lock doors
or trunk with anyone inside the car. See
Owner's Manual for more details.
<
Maintenance, replacement, or
repair of the emission control
devices and systems may be performed
by any automotive repair establishment
or individual using any certified auto-
motive part.
<
Symbol on vehicle parts
Indicates that you should consult
the relevant section of this Owner's
Manual for information on a particular
part or assembly.
For your own safety

11n
Controls and features
Maintenance and care
Lamps:
Side lamps/Low beams87
Instrument lighting87
High beams/Parking lamps88
Fog lamps88
Interior lamps88
Controlling the climate
for pleasant driving:
Air conditioner90
Automatic climate control96
Seat heating100
Cabin convenience:
HiFi system101
Glove compartment101
Storage compartments102
Cellular phone103
Ashtray, front104
Cigarette lighter104
Ashtray, rear105
Power outlet105
Loading and transporting:
Ski bag106
Cargo area107
Cargo loading110
Roof-mounted luggage rack111
Special operating instructions:
Break-in procedures114
Driving notes115
Catalytic converter115
Antilock Brake System
(ABS)116
Disc brakes118
Brake system120
Winter operation121
Power steering123
Cellular phone123
Radio reception123
Wheels and tires:
Tire inflation pressure124
Tire condition124
Tire replacement125
Tire rotation126
Wheel and tire
combinations127
Winter tires128
Snow chains128
Approved wheel and tire
specifications129
Under the hood:
Hood130
Engine compartment132
Washer fluids134
Washer nozzles134
Engine oil135
Coolant137
Brake fluid138
Vehicle Identification
Number139
Care and maintenance:
The BMW Maintenance
System140
Caring for your vehicle141
Airbags147
Vehicle storage147
Laws and regulations:
Technical modifications
to the vehicle148
California Proposition
65 Warning148
OBD interface socket149

41n
IndexDataTechnologyRepairsCar careControlsOverview
Alarm system
*
The conceptThe vehicle alarm system responds:
>When a door, the hood or the tailgate
is opened.
>To movement inside the vehicle
(interior motion sensor).
>To a change of the vehicle's tilt Ð if
someone attempts to steal the wheels
or tow the vehicle without authoriza-
tion, for example.
>To interruption of battery voltage.
The system responds to unauthorized
vehicle entry and attempted theft by
simultaneously activating the following:
>Sounding an acoustical alarm for
30 seconds.
>Activating the hazard warning flashers
for approx. five minutes.
>Flashing the high beams flash on and
off in rhythm with the hazard warning
flashers.
To activate and deactivate the
alarm systemWhen the vehicle is locked or unlocked
by using a key or the remote control,
the alarm system is also armed or
disarmed at the same time.
The interior motion sensor and tilt alarm
sensor are activated 30 seconds after
the last locking operation.
If the alarm system has been armed
correctly, the hazard warning flashers
flash once.
You can have one signal set as
acknowledgment when arming
and disarming.<
You can also open the rear window
when the system is armed by pressing
button 3 of the remote control (refer to
page 37). When it is closed, the rear
window is once again secured.
Indicator lamp displaysThe indicator lamp is located under the
inside rearview mirror.
>The indicator lamp flashes
continuously: the system is armed.
>The indicator lamp flashes when it
is armed: doors, the hood, tailgate
or rear window have not been prop-
erly closed. Even if you do not close
the alerted area, the remaining areas
are deadlocked, and the indicator
lamp flashes continuously after
10 seconds. However, the interior
motion sensor is not activated.
>The indicator lamp goes out when the
system is disarmed: no manipulation
or attempted intrusions have been
detected in the period since the
system was armed.463us010

63n
IndexDataTechnologyRepairsCar careControlsOverview
Parking brake To engageThe parking brake is designed primarily
to prevent the vehicle from rolling when
it is parked. It acts on the rear wheels.
The lock engages automatically when
you lift the lever, and the indicator lamp
in the instrument panel comes on when
the ignition key is in position 2. Refer to
page 21.To releasePull up slightly on the lever, press the
button (arrow) and lower the lever.460us024
If, in exceptional circumstances,
it should be necessary to apply the
parking brake while the vehicle is in
motion, do not pull the lever with exces-
sive pressure. Keep your thumb
pressed against the release button
while carefully pulling the lever up to
apply moderate pressure.
Excessive pressure can lead to over-
braking and loss of traction (fishtailing)
at the rear axle.
The brake lamps do not come on when
the parking brake is applied.
Vehicles with manual transmission:
Always apply the parking brake when
parking on slopes and inclined surfaces,
since placing the lever in 1st gear or
reverse may not provide adequate
resistance to rolling.
Vehicles with automatic transmission:
Place the selector lever in "Park."<
To avoid corrosion and one-sided
braking, apply the parking brake lightly
from time to time when coasting to a
standstill (at a traffic signal, for
instance), provided that it is safe to do
so.

65n
IndexDataTechnologyRepairsCar careControlsOverview
Automatic transmission with Steptronic
*
You have the option of driving with a
normal automatic transmission or
switching to manual.
When you move the selector lever from
the "D" position to the left into the M/S
range, the performance-oriented shift
programs of the automatic transmission
are engaged. As soon as you tap the
selector lever in the "+" or "Ð" direction,
Steptronic changes the gear. The
manual mode is engaged. Whenever
you want to use the automatic mode
again, move the selector lever to the
right into position "D."
The automatic transmission with Step-
tronic is equipped with Adaptive Trans-
mission Control (ATC). ATC reacts with
precision to your individual driving style
and the current driving conditions. It is
for this reason that various shift
programs are used.
For additional information concerning
the ATC, please refer to the chapter
describing "Advanced technology" on
page 173.
Selector lever positions
P R N D M/S + Ð
Starting the engineThe engine can only be started in
selector lever positions P ("Park") or N
("Neutral").Range selectionA detent prevents inadvertent shifts into
some selector lever positions. To
release the shift-lock mechanism, press
the button on the front side of the
selector handle (arrow).463de061
While the vehicle is stationary
and before shifting out of "Park" or
"Neutral," depress the footbrake, other-
wise the selector lever will be blocked
(shiftlock).
Hold the footbrake down until starting
off. Otherwise the vehicle will "creep"
when a drive position is engaged.<
Before leaving the vehicle with the
engine running, move the selector
lever to the "Park" or "Neutral" position
and apply the parking brake. The
vehicle will move if this is not done. Do
not leave the vehicle unattended with
the engine running. An unattended
vehicle with a running engine repre-
sents a potential safety hazard.<
P ParkSelect "Park" only when the vehicle is
stationary. The transmission locks to
prevent the rear wheels from turning.R ReverseSelect "Reverse" only when the vehicle
is stationary.N Neutral Select "Neutral" only if your journey is
interrupted for a longer period.

79n
IndexDataTechnologyRepairsCar careControlsOverview
ASC+TThe conceptThis systems enhances driving stability
and traction, especially when you are
just starting off, accelerating or in
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 and 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 if it 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. You can still drive the vehicle
perfectly well without ASC+T.
Please consult your BMW center in the
event of a fault, refer to pages 21
and 22.
Deactivate the ASC+T Press 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 effective 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 121.
To maintain vehicle stability,
always drive with the ASC+T
activated whenever possible.<460de312

81n
IndexDataTechnologyRepairsCar careControlsOverview
DSC
* Ð BMW 325i
The concept DSC helps maintain 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, the system recog-
nizes unstable vehicle conditions
(understeering or oversteering, for
example) and helps hold the vehicle on
a sure course by intervening via the
engine and by braking intervention at
the individual wheels.
The DSC is operational every time you
start the engine. DSC contains the
functions of ADB and CBC, refer to
page 117.
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 pages 21 and 22.
Indicator lamp flashes:
DSC is active and governs the drive
force and braking force.
The indicator lamp lights up continu-
ously:
The DSC has been turned off via the
switch; ADB is ready to use.
ADB intervention is not indicated.
The indicator lamp and the
brake warning lamp lights up
continuously:
The DSC, ADB and DBC have
been switched off via the button
or are defective.
Indicator and warning lamps for
Canadian models.
You can continue to drive the vehicle
normally, but without DSC. Please
consult your BMW center in the event
of a malfunction, refer to pages 21
and 22.
Deactivate DSC/activate ADBPress the DSC button briefly, the indi-
cator lamp lights up continuously.
The DSC has been switched off; ADB is
operational.
In the following exceptional circum-
stances, it may be effective to deacti-
vate the ADB 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.
>When driving with snow chains.
Refer also to page 121.
The gain in traction is achieved by a
reduction in stabilizing intervention.460de313

83n
IndexDataTechnologyRepairsCar careControlsOverview
DSC Ð BMW 325xiThe conceptDSC maintains vehicle stability, even in
critical driving situations.
The system enhances vehicle stability
during acceleration and when starting
up from a full stop, and optimizes trac-
tion as well. 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 vehicle on a
steady course by reducing the engine
output and brake applications to the
individual wheels.
The DSC is operational every time you
start the engine. DSC contains ADB-X
und DBC, refer to page 118.
The ADB-X (Automatic Differential
Braking) replaces the function of
conventional differential and transverse
lock through brake intervention, and
increases traction whenever conditions
merit, e. g. when driving on snow-
covered streets.Indicator lamp
The indicator lamp on the instru-
ment cluster 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 is switched off via the switch;
ADB-X is operational.
ADB-X intervention not indicated.
If the indicator lamp does not go
out after repeatedly pressing the
DSC switch, then the DSC and the
ADB-X are defective, and the interven-
tion described to the right is then no
longer available.<
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.
Deactivate the DSCPress the DSC button; the indicator
lamp comes on and stays on.
The DSC has been switched off and the
ADB-X is designed for maximum
output.
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 with snow chains. Refer
also to page 121.
To maintain vehicle stability,
always drive with the DSC on
whenever possible.<460de313