2001 BMW 325I engine

28n
Fuel specifications Tire inflation pressure The engine uses lead-free gasoline
only.
Required fuel:
Premium Unleaded Gasoline,
min. 91 AKI
AKI = Anti Knock Index
Do not use leaded fuels. The use
of leaded fuels will cause perma-
nent damage to the system's oxygen
sensor and the catalytic converter.<
You will find the inflation pressures on
the inside door pillar (visible with door
open).Check tire pressures On the next page you will find all the tire
pressure and ambient air temperature
specifications stated in the units usually
used in your country (psi; kilopascal).
For vehicles with Tire Pressure Control
(RDC):
After correcting the tire inflation pres-
sure, reactivate the system. Refer to
page 85.460de163
Check tire inflation pressures Ð
including the space-saver spare
wheel, or spare wheel Ð regularly, at
least every two weeks and before
beginning any extended driving. Incor-
rect tire pressure can otherwise lead to
tire damage and accidents.
Inflate the spare tire to the highest tire
inflation pressure specified for your
vehicle.<

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
31n
IndexDataTechnologyRepairsCar careControlsOverview
Driving:
Steering/Ignition lock61
Starting the engine61
Switching off the engine62
Parking brake63
Manual transmission64
Automatic transmission
with Steptronic65
Turn signal indicator/Headlamp
flasher68
Washer/Wiper system68
Rear window defroster70
Cruise control71
Everything under control:
Odometer73
Tachometer73
Energy Control73
Fuel gauge74
Coolant temperature gauge74
Service Interval Display74
Check Control75
Clock75
Computer76
Technology for safety and
driving convenience:
Park Distance Control (PDC)78
Automatic Stability Control plus
Traction (ASC+T)79
Dynamic Stability Control
(DSC)80
Tire Pressure Control (RDC)85Lamps:
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

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IndexDataTechnologyRepairsCar careControlsOverview
Electronic vehicle immobilizer The key to securityYour BMW is equipped with a passive
anti-theft system. This electronic immo-
bilization system reduces the likelihood
of your vehicle being stolen by making
it impossible to start the engine using
any keys other than the ones furnished
with the vehicle. Your BMW center can
cancel the electronic system authoriza-
tion for individual keys (in the event of
loss, for instance). A deactivated key
can no longer be used to start the
engine.46cde060
How the electronics workAt the heart of this system is an elec-
tronic chip that is integrated into the
key. The lock mechanism itself is actu-
ally a dual-function device. While the
engine is running, the circuitry in the
ignition key and the vehicle's electronic
system constantly exchange variable,
vehicle-specific signals. The system will
not release the ignition, fuel injection
and starter unless it recognizes an
"authorized" key.
Force applied to the key can
damage the integrated electronic
circuitry. A damaged key can no longer
be used to start the engine.<

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IndexDataTechnologyRepairsCar careControlsOverview
0 Steering lock engaged The key can be inserted or removed in
this position only.
After removing the key, turn the
steering wheel slightly to the left or right
until the lock engages.
If the key has been left in the ignition,
an acoustic signal will sound after the
door has been opened.460de022
Vehicles with automatic transmis-
sion:
Do not move the selector lever from the
"Park" position until the engine is
running (ignition key at position 2).
In order to turn the key to position 0 or
to remove it, first move the selector
lever to the position "Park" (Interlock).<
1 Steering lock disengaged Turning the steering wheel slightly to
the right or left often makes it easier to
turn the key from 0 to 1.
Individual electrical devices are ready
for operation.2 Ignition onAll electrical equipment and accesso-
ries are available for use.3 Starting the engine
Vehicles with manual transmis-
sion:
Depress the clutch when starting the
vehicle. A lockout prevents the engine
from starting if the clutch is not
depressed.<
Before starting>Engage the parking brake.
>Put the manual-shift gear lever in idle
or in P for an automatic transmission.
>Depress the clutch pedal.
Do not run the engine in enclosed
areas. The exhaust gases contain
carbon monoxide, an odorless and
colorless, but highly toxic gas.
Breathing the exhaust gases poses an
extreme health risk, and can lead to
unconsciousness and death.
Never leave the vehicle unattended
with the engine running. An unattended
vehicle with a running engine repre-
sents a potential safety hazard.<
Do not press the accelerator pedal
when starting the engine.
Do not actuate the starter for too
short a time, but do not keep
turning it for more than approx.
20 seconds. Release the ignition key
immediately when the engine starts.
Do not allow the engine to warm up by
leaving it running while the vehicle
remains stationary. Instead, drive off
immediately at a moderate engine
speed.<
Steering/Ignition lock Starting the engine

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Starting the engine Switching off the engine If the engine does not start on the first
attempt (if it is very hot or cold, for
instance):
>Press the accelerator pedal halfway
down while engaging the starter.
Cold start at very low temperatures
approx. +5 7 (Ð15 6) at high altitude
over 3,300 ft (1000 m):
>On the first start attempt, engage
the starter for a longer period
(approx. 10 seconds).
>Press the accelerator pedal halfway
down while engaging the starter.
Engine idle speed is controlled by the
engine computer system. Increased
speeds at start-up are normal and
should decrease as the engine warms
up. If engine speed does not decrease,
service is required.
To prevent the battery from dischar-
ging, always switch off electrical
devices which are not in use and the
ignition when the vehicle is not being
driven.Turn the ignition key to position 1 or 0.
Never remove the ignition key
while the vehicle is still moving.
If you did so, the steering lock would
engage when the steering wheel is
turned.
When you leave the vehicle, always
remove the ignition key and engage the
steering lock.
Vehicles with manual transmission:
Always engage 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."<

64n
Manual transmission Completely depress the clutch pedal
each time you shift, pressing the
manual-shift gear lever into its respec-
tive end position.
Also depress the clutch when starting
the vehicle, as otherwise lockout will
prevent the engine from starting.
The shift lever's neutral plane (dot in the
illustration) is located between 3rd and
4th gears.
When shifting from each gear into
"Neutral," the shift lever returns auto-
matically to this gear plane because
of its spring loading.360de044
Reverse Select "Reverse" only when the vehicle
is stationary. Press the shift lever to the
left to overcome the resistance.
As you do this, the backup lamps will
turn on automatically when the ignition
key is in position 2.
Do not hold the vehicle in place on
slopes by slipping or "riding" the
clutch. Use the parking brake instead.
Otherwise, riding the clutch will cause
heavy wear and tear to the clutch.<

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.

66n
Automatic transmission with Steptronic
*
D Drive (automatic shift program)This position is designed for driving
under all normal operating conditions.
All forward gears are available and the
ATC is fully operational."Kickdown"You will get maximum vehicle perfor-
mance in the "kickdown" mode.
To activate this mode, depress the
accelerator pedal beyond the full-
throttle position, at which a resistance
point must be overcome.
M/S Manual mode and Sport
ProgramShifting from D into M/S activates the
Sport Program. This is indicated by
"SD" in the gear selection display. This
position is recommended for a perfor-
mance-oriented driving style.
With the first brief touch, the automatic
transmission shifts from the Sport
Program to the manual mode.
Whenever you tap the selector lever
forward in the "+" direction, the trans-
mission shifts up. Whenever the lever is
moved back in the "Ð" direction, the
transmission shifts down. M1 to M5
appear in the gear indicator.463de062
Upshifts or downshifts will only be
carried out by the ATC at appropriate
engine speeds and road speeds. If the
engine speed is too high, for instance,
a downshift will not be executed. The
gear selected will appear briefly in the
instrument cluster followed by the
current gear.
To accelerate quickly in the
manual mode (to pass another
vehicle), shift down manually or employ
the "kickdown" mode.<
Shifting from M/S to the selector lever
positions P, R and N is possible only by
going through D.