engine BMW M3 COUPE 2002 E46 User Guide

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Fuel specifications Tire inflation pressuresRefuel with lead-freeThe engine uses lead-free gasoline
only.
Required fuel:
>Premium Unleaded Gasoline,
min. 91 AKI
AKI = Anti Knock Index
Never use leaded fuel, as it would
cause permanent and irreversible
damage to the oxygen sensor and the
catalytic converter.<
The specified inflation pressures are
provided on a sticker attached to the
B-pillar and visible with the driver's
door open.Check tire pressuresOn 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).
After correcting the tire inflation pres-
sure, reinitialize the Flat Tire Monitor so
that it can monitor the tire inflation
pressure, refer to page 77.
Check the tire pressures on a
regular basis Ð at least twice a
month Ð and before every extended
journey. Incorrect tire pressure can
otherwise lead to driving instability, tire
damage and accidents.<
Comply with tire approval
specifications The inflation pressures apply to BMW
approved tire sizes and tire manufac-
turers. Your BMW center is familiar with
these pressures. Higher pressures may
be specified for tires made by other
manufacturers.
Your vehicle is equipped with tires that
not only meet US standards, but also
European standards. We recommend
the exclusive use of BMW approved
tires.

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Airbags Transporting children safelyOperational status
The indicator lamp in the instru-
ment cluster displays the opera-
tional status of the airbag
system from ignition key position 1.
System operational:
>The indicator lamp comes on briefly
when you turn the ignition key to
position 1 or higher.
System malfunction:
>The indicator lamp fails to come on,
when the ignition key is turned
>The indicator lamp fails to go out
after the engine has been started, or
it comes on during normal driving.
Please respond to any malfunctions in
the system by immediately having it
inspected at your BMW center; other-
wise the airbag could fail to respond to
an accident in which both the angle and
the severity of the impact would
normally trigger airbag deployment.
Commercially available child-restraint
systems are designed to be secured
with a lap belt or with the lap belt
portion of a combination lap/shoulder
belt. Improperly or inadequately
installed restraint systems can increase
the risk of injury to children. Always
read and follow the instructions that
come with the system.
If you use a child-restraint system with
a tether strap, three additional tether
anchorage points have been provided
(refer to the arrows in the illustration).
Depending on the location selected for
seating in the rear passenger area,
attach the strap hook to the corre-
sponding anchorage point to secure the
child-restraint system. Remove the
cover first on the middle location.
If the respective seating position is
fitted with a head restraint lift the head
restraint and pass the tether strap
between the head restraint and the seat
back.
Adjust the tether strap according to the
child-restraint manufacturer's instruc-
tions.

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OverviewControlsMaintenanceRepairsDataIndex
Vehicle Memory, Key Memory How the system functionsNo doubt you have reflected at one
time or another on how great it would
be if you could permanently configure
your vehicle's various features and
adjustments to mirror your own indi-
vidual preferences. In engineering your
vehicle, BMW has incorporated a
number of options for personal adjust-
ment that can be programmed into your
vehicle at your BMW center.
The available configuration data fall into
two categories, according to whether
their primary orientation is the vehicle
("Vehicle Memory") or the individual
("Key Memory"). Provided that each
person has a separate remote-control
key, you can have your BMW center
enter adjustment data for as many as
four different individuals into the
system.
The system then relies on a bilateral
data exchange to identify the individual
user and dial in the selected settings
whenever the remote control unit is
used to disengage the door locks.
Color-coded decals have been
provided to help you distinguish indi-
vidual keys with different settings.What the system can doYour BMW center can provide you with
details on the possibilities that the
Vehicle and Key Memory systems offer.
Examples for Vehicle Memory:
>Various signals as acknowledgment
when locking or unlocking your
vehicle, refer to pages 29, 30
>Activate/deactivate the "Follow me
home" lamps function, refer to
page 80.Examples for Key Memory:
>Locks the vehicle after driving off,
refer to page 33
>Automatically adjusts the seat and
exterior mirrors to your personal
programmed settings, refer to
page 46
>Calls up customized settings for the
automatic climate control when
unlocking using the remote control,
refer to page 87
>After the engine is started, calling up
of the last selected driving program
for each shifting mode, refer to
page 63.
You will see this symbol through-
out the Owner's Manual. It is to
remind you at appropriate places of the
settings that are available to you.<

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Ignition key positions0 Steering locked
1 Steering unlocked
2 Ignition switched on
3 Starting engineSteering locked 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 you hear the lock engage.
If the key is not removed, an acoustic
signal is sounded after the driver's door
has been opened.
The sound system remains operational
for approx. 20 minutes after you switch
off the ignition (ignition key in position 0
or key removed). Simply switch it back
on.Steering unlocked You will find that it is often easier to turn
the ignition key from position 0 to posi-
tion 1 when you move the steering
wheel slightly to help disengage the
lock.
Individual electrical accessories are
ready for operation. 1. Engage the parking brake
2. Gearshift lever in idling position
3. Press the clutch pedal at low
temperatures
4. Start the engine. Do not press the
accelerator pedal. Do not actuate the
starter for too short a time. Do not
turn 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, begin
driving immediately at a moderate
engine speed.
Vehicles with sequential M gearbox
*
SMG II: refer to the instructions on
page 60.
Do not allow the engine to run in
enclosed spaces. 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.
Do not leave the vehicle unattended
with the engine running. An unat-
tended vehicle with a running engine
represents a potential safety hazard.<
Ignition lock Starting the engine

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OverviewControlsMaintenanceRepairsDataIndex
Starting the engine Switching off the engine If the engine does not start on the first
attempt (the engine is very hot or cold,
for instance):
>Press the accelerator pedal halfway
down while engaging the starter.
Cold starts at very low temperatures,
starting at about +57 (Ð156) and at
high altitudes over 3,300 ft (over
1,000 m):
>On the first start attempt, engage the
starter for a longer period (approx.
10 seconds)
Extended starting attempts, char-
acterized by excessively frequent
or long periods with the starter
engaged, can lead to damage to the
catalytic converter.<
When driving, standing at idle,
and parking the vehicle, take care
to avoid contact between the exhaust
system and flammable materials (grass,
hay, leaves, etc.). Such contact could
lead to a fire, resulting in personal injury
and property damage.<
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
discharging, always switch off electrical
devices that are not in use. Switch the
ignition off when the vehicle is not
being driven.Turn the ignition key to position 1 or 0.
Do not 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.
Set the parking brake when parking on
steep hills, because under certain
conditions, putting the vehicle into first
or reverse gear may not be enough to
prevent it from rolling away.<
Vehicles with sequential M transmis-
sion
* SMG II: observe instructions on
page 60.

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Sequential M gearbox* SMG IISelector lever positionR: Reverse position
0: Position 0
Forward position with one-touch mode:
>S: Sequential mode
>A: Automated mode
>+: Upshifting in sequential mode
>-: Downshifting in sequential mode.
The SMG II is ready for operation from
ignition key position 2.
For your safety, it is only possible to
engage a driving position with the
vehicle stopped approx. 2 seconds
after engaging the position 0 with the
footbrake depressed (shift-lock func-
tion).
It is not necessary to hold the footbrake
depressed until starting off, as the
vehicle does not move forward with the
driving position engaged.Starting engine and driving offTo start the engine:
1. Depress footbrake
2. Move selector lever into position 0
3. Turn the ignition key to position 3,
refer to page 56.
To drive off:
1. Depress footbrake
2. Engage a driving position
3. Release footbrake and slowly
depress accelerator pedal.
With the engine running, the gear
indicator in the instrument cluster
flashes to indicate that a driving posi-
tion is engaged with the driver's door
open or if the hood is not closed prop-
erly, refer to page 61.
If none of the pedals is actuated, then
the gearbox is automatically taken out
of gear after approx. 4 seconds.
Then the desired direction of travel
must be selected again with the
selector lever in position 0.<
Starting off is not possible with the
hood open.<
Before exiting the vehicle with the
engine running, move the selector
lever into position 0 and apply the
parking brake.
Never leave the vehicle unattended
with the engine running. An unat-
tended vehicle with a running engine
represents a potential safety hazard. or 0 with the selector lever in the
forward or reverse position, a gear
automatically remains engaged.
If you turn the ignition key to position 1
or 0 with the selector lever in position 0,
a gong and the flashing gear indicator
in the SMG display remind you that the
vehicle is not secured against rolling.

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OverviewControlsMaintenanceRepairsDataIndex
Sequential M gearbox* SMG IIThe warning stops after approx.
10 seconds. If you move the selector
lever into a forward or reverse position
during this time, a gear is automatically
engaged.
The SMG II has no park position
for securing the vehicle against
rolling.
The ignition key can be removed in any
selector lever position.<
Always engage the parking brake
when parking on downhill roads.
Engaging a gear may not sufficiently
secure the vehicle against rolling.<
Display in instrument clusterThe selector lever position, currently
engaged gear and selected driving
program are displayed in the instrument
cluster.
1 Engaged gear
2 Selected driving program
(corresponds to the number of illumi-
nated fields), refer to page 64
3 Tapping the selector lever to the right
switches over into the displayed shift
mode
4 "A" indicates an activated automated
mode.
R Ð Reverse positionOnly engage with the vehicle stopped
or at low speed, e.g. for "rocking free"
in deep snow.0 Ð Position 0Always engage before starting the
engine.
If the driving situation requires, e.g.
when downshifting on slippery roads,
the SMG II automatically disengages
and reengages the clutch, i.e. it is not
necessary to manually engage
position 0. S Ð Sequential modeIn the sequential mode all forward
gears are to be shifted by the driver.
Changeover from automated to
sequential mode:
>Tap the selector lever to the right
toward "S"
or
>change gears with the selector lever
or the shift paddles on the steering
wheel.
You do not need to reduce the throttle
for shifting.

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Sequential M gearbox* SMG IIShifting gears with shift paddles on
steering wheel:
>To upshift, briefly pull the right
paddle "+"
>To downshift, briefly pull the left
paddle "Ð."
Shift paddles with various widths
matched to the shape of your
hand are available from your BMW
center.<
Shifting gears with selector lever:
>To upshift, pull the selector lever
backward "+"
>To downshift, push the selector lever
forward "Ð".
No automatic upshifting is carried out in
the sequential mode.
You accelerate from higher gears, e.g.
during passing, by manually down-
shifting.
In the following situations the SMG II
helps you "think" in the sequential
mode:
>Upshifts and downshifts are only
executed when the new gear will
provide a suitable combination of
vehicle and engine speed, i.e., down-
shifts that would cause the engine to
overrev will not be executed
>During a stop the gearbox is auto-
matically downshifted into the first
gear so that, e.g. before a traffic light,
it is only necessary to accelerate to
continue driving
>When the speed is reduced, the
gearbox is automatically down-
shifted shortly before a gear-depen-
dent minimum speed is reached
without you taking any action.
A Ð Automated modeEach time the engine is started, the
automated mode is activated as soon
as you move the selector lever into the
forward driving position.
In the automated mode all forward
gears are automatically shifted.
Changeover from sequential to auto-
mated mode: tap the selector lever to
the right toward "A." Watch the display
in the instrument cluster, refer to
page 61.
For rapid acceleration, e.g. during
passing, depress the accelerator pedal
completely (kick-down). The gearbox
now downshifts in dependence on the
selected driving program.
Even in the automated mode, you can
help specify the shifting point: if a gear-
dependent minimum speed is
exceeded, you can upshift by slowly
reducing pressure on the accelerator
pedal. In the process, the respective
driving situation is detected by sensors
and taken into account.

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OverviewControlsMaintenanceRepairsDataIndex
Sequential M gearbox* SMG IIDrivelogicDrivelogic makes various driving
programs available to you.
Press Drivelogic repeatedly until the
desired driving program is shown in the
SMG display of the instrument cluster,
refer to page 61.
In the automated mode you can select
from five driving programs ranging from
convenience mode/winter operation to
sporty and highly dynamic.
In the first automated driving program,
starting off takes place in second gear,
which is advisable under winter road
conditions with ice and snow.
In the sequential mode you can choose
from six driving programs ranging from
balanced, dynamic to sporty, puristic
driving. The sporty, puristic driving
program can only be activated with the
Dynamic Stability Control (DSC) deacti-
vated, refer to page 76.
To maintain vehicle stability,
always drive with the DSC acti-
vated on whenever possible.<
Following each change between the
sequential and the automated mode,
the last driving program selected in the
respective mode is active.
Exception: instead of the last selected
sequential driving program 6,
program 5 is activated only after the
engine has been started again.
Your vehicle is set so that when
the engine is started, the last
selected driving program saved in your
key is activated for each shifting
mode.<
Gradient assistanceThe gradient assistance enables
starting off on grades with virtually no
roll-back. It can be activated in the
sequential and automated mode with
the vehicle stopped and can be used
for both forward and reverse driving.
1. Depress footbrake with vehicle
stopped
2. Activate the gradient assistance by
pulling the left paddle for at least
0.5 seconds. An increase in the
engine speed indicates that the
gradient assistance is activated.
Pulling the left paddle again briefly
deactivates the gradient assis-
tance again.<
3. Release the footbrake and start off
within 2 seconds.

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Sequential M gearbox* SMG II
The vehicle may roll slightly before
it is held by the gradient assis-
tance after releasing the footbrake.
Two seconds after the footbrake is
released, the vehicle begins to roll, as it
is no longer held with the gradient
assistance.<
The gradient assistance must be reacti-
vated before each use.
Indicator lamp
The transmission indicator lamp
in the instrument cluster goes
out after the engine is started.
>If it does not go out, or if it lights up
during driving, a fault has occurred.
The available functions may be
limited under certain circumstances.
Drive carefully and with the Dynamic
Stability Control (DSC) activated.
Have the system checked by the
nearest BMW center
>If the indicator lamp flashes while
driving, the system is overloaded.
Avoid high loads until the indicator
lamp goes out again permanently.
Shift lightsTo achieve the best possible vehicle
acceleration with a sporty driving style
in the sequential mode, shift lights in
the instrument cluster indicate the
optimum shifting point shortly before
the maximum engine speed is reached.
1 When the maximum engine speed is
approached, yellow indicator fields
(shift lights) in the tachometer light up
consecutively to indicate the
approaching upshift time
2 Shift at the latest when the last indi-
cator field lights up red.Tire replacement, snow chainsFollowing a tire or wheel change and
after mounting or removing snow
chains, the slip recognition of the