engine BMW M3 COUPE 2001 E46 User Guide

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
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IndexDataTechnologyRepairsCar careControlsOverview
Driving:
Steering/Ignition lock62
Starting the engine62
Switching off the engine63
Parking brake63
Manual transmission64
Turn signal indicator/Headlamp
flasher65
Wiper/Washer system/Rain
sensor65
Rear window defroster67
Cruise control67
Everything under control:
Odometer69
Tachometer69
Engine oil temperature gauge69
Fuel gauge70
Coolant temperature gauge70
Service Interval Display71
Check Control72
Computer72
Technology for driving comfort
and safety:
Park Distance Control (PDC)75
Dynamic Stability Control
(DSC)76
Tire Pressure Warning (RDW)78
M Engine dynamics control80Lamps:
Side lamps/Low beams81
Instrument lighting81
High beams/Parking lamp82
Fog lamps82
Interior lamps82
Reading lamps83
Controlling the climate
for pleasant driving:
Automatic climate control84
Heated seats89
Roller sun blind89
Interior conveniences:
HiFi system90
Glove compartment90
Storage compartments91
Cellular phone92
Ashtray, front92
Cigarette lighter93
Ashtray rear 93
Clothes hooks94
Loading and transporting
cargo:
Through-loading system95
Ski bag96
Cargo loading97
Roof-mounted luggage rack98

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IndexDataTechnologyRepairsCar careControlsOverview
Electronic vehicle immobilizer Central locking systemThe key to security Your BMW is equipped with a passive
antiÐtheft system. This electronic immo-
bilization system is designed to reduce
the susceptibility of your vehicle to theft
by making it impossible to start the
engine using any means other than the
special keys furnished with the vehicle.
Your BMW center can cancel the elec-
tronic system authorization for indi-
vidual keys (in the event of loss, for
instance). A deactivated key can no
longer be used to start the engine.
How the electronics work At the heart of this system is an elec-
tronic chip which is integrated into the
key. The lock mechanism itself is actu-
ally a dual-function device, simulta-
neously serving as a communications
interface designed to allow the security
system to maintain a continuous stream
of variable, vehicle-specific signals with
the electronic circuitry in the key. The
system will not release the ignition, fuel
injection and starter unless it recog-
nizes 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.<
The conceptThe system engages and releases the
locks on the:
>Doors
>Luggage compartment lid
>Fuel filler door.
The central locking system is ready for
operation whenever the driver's door is
closed. The central locking system can
be operated
>from outside via the door lock and
using the remote control
>from inside by pressing a button.
If it is operated from inside, the fuel
filler door will not be locked (refer to
page 36).
When the system is actuated from
outside the vehicle, the antitheft protec-
tion is simultaneously activated. Both
the door locks and release handles
remain locked. The alarm system is also
activated or deactivated.
For your safety: if locked from inside,
the central locking system unlocks
automatically in the event of an acci-
dent. In addition, the hazard warning
flashers and interior lamps come on.

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0 Steering locked
1 Steering unlocked
2 Ignition switched on
3 Starting the engine
Steering locked The key can be inserted or removed in
this position only.
To lock the steering column after you
have removed the key, turn the steering
wheel until you hear it lock.
If the key is not removed, an acoustic
signal sounds after the driver's door
has been opened.
Steering unlocked Individual electrical accessories are
ready for operation.
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. Ignition switched onAll electrical equipment and accesso-
ries are available for use. 1 Engage the parking brake
2 Put manual-shift gear lever in idling
position
3 Step on the clutch pedal
4 Turn the key to position 3 to start the
engine.
Do not actuate the starter for too short
a time. Do not turn it for more than
approx. 20 seconds. Release the igni-
tion key immediately when the engine
starts.
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.<
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.<
Steering/Ignition lock Starting the engine

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IndexDataTechnologyRepairsCar careControlsOverview
Starting the engine Switching off engine Parking brake If the engine does not start on the first
attempt (if 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 +5 7 (Ð15 6) and
at high altitudes over 3,300 ft
(1,000 meters):
>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 startup 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 deactivate elec-
trical 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 do so, the steering will lock, making
it impossible to steer the vehicle.
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
gear or reverse may not be enough to
prevent it from rolling away.
The power assist is not available when
the engine is not on. This means that
more effort is required to apply the
brakes.<
The parking brake is primarily designed
to prevent the vehicle from rolling while
parked. It operates against the rear
wheels. To engageThe lever engages automatically, 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.

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IndexDataTechnologyRepairsCar careControlsOverview
Washer/Wiper system Rear window defroster Cruise control Do not use the washers when the reser-
voir is empty, since this could cause
damage to the washer pump. *
When the vehicle's lighting system is
switched on, the headlamps will also be
cleaned every fifth time the automatic
windshield washer is activated.Windshield washer jetsThe windshield washer jets are warmed
automatically when the ignition key is in
position 2.
To activatePress the button: as long as the indi-
cator lamp remains on, the rear window
defroster continues at high output
(rapid thaw).
After the indicator lamp goes out, the
defroster continues operating at
reduced power for a limited period
before deactivating automatically. To deactivateIf the indicator lamp is still on, press the
button.
Starting at about 20 mph (30 km/h), you
can maintain and store any vehicle
speed that you specify.
You can use cruise control whenever
the system is active while the engine is
running.
1 Accelerate and store
2 Decelerate and store
3 Activate/interrupt/deactivate the
system
4 Recall the stored speed.To activate the system From ignition key position 2.
Press switch 3 and the indicator lamp in
the instrument cluster (refer to page 22)
will come on. You can now use the
cruise control.

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Cruise control
Do not use cruise control on
winding roads, when high traffic
density prevents driving at a constant
speed, when the road surface is slick
(snow, rain, ice), or when the road
surface is loose (rocks, sand).<
To deactivate the system Press switch 3 repeatedly until the indi-
cator lamp in the instrument cluster
goes out.
The cruise control is also deactivated
when the ignition key is in position 0.
The speed stored in the memory is
deleted.To store and maintain speed as
well as to acceleratePress button 1 briefly:
The system registers and maintains the
current vehicle speed. Each additional
tap on the button increases the speed
by approx. 0.6 mph (1 km/h).
Press and hold button 1:
The vehicle accelerates without pres-
sure on the accelerator pedal. When
you release the button, the system
records and maintains the current
speed.
If, on a downhill gradient, the
engine braking effect is not suffi-
cient, the controlled speed can be
exceeded. Speed can drop on uphill
grades if the engine output is insuffi-
cient.<
To deceleratePress button 2 briefly:
Whenever cruise control is active,
your speed will reduce by approx.
0.6 mph (1 km/h) each time you tap
the button.
Press and hold button 2:
With the cruise control active, the
system automatically reduces the
throttle opening to slow the vehicle.
When you release the button, the
system records and maintains the
current speed.To cancel the cruise control When the cruise control is on, press
and hold button 3. The indicator lamp
will stay on.
You can use the cruise control again
whenever required by calling up the
speed that was stored last.
In addition, the cruise control is
canceled automatically:
>If the brakes are applied
>When pressing down the clutch pedal
>If the cruise speed is either exceeded
or not met for an extended length of
time (if you depress the accelerator
pedal and exceed the set speed, for
example).Recal the stored speedPress button 4:
The vehicle accelerates to and main-
tains the last speed stored.

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1 Odometer
2 Trip odometerOdometerYou can activate the displays shown in
the illustration with the ignition key in
position 0 by pressing the button in the
instrument cluster (arrow).Trip odometerTo reset the trip odometer to zero,
press the button (arrow) with the igni-
tion key in position 1 or higher.
Variable pre-warning zoneThe orange pre-warning zone displays
current permissible engine speeds,
depending on the engine temperature.
As the engine temperature climbs,
some of the sectors of this pre-warning
zone will go out one after the other.
Avoid engine speeds in the early
warning zone if possible.Warning zone
Be sure to avoid engine sppeds in
the red warning zone, as other-
wise, the engine can be damaged.<
In this range the fuel supply will be
interrupted to protect the engine; the
resulting effect resembles that associ-
ated with a sudden loss of power.
The general operating temperature is
between 175 7 (80 6) and 250 7
(120 6). During performance-oriented
driving, do not exceed the maximum
temperature of 300 7 (150 6).
Odometer Tachometer Engine oil temperature

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Fuel gauge Coolant temperature gauge Once the indicator lamp stays on
continuously, there are still approx.
2 gallons (8 liters) of fuel in the fuel
tank.
For fuel tank capacity, refer to
page 169.
If the tilt of the vehicle varies (when you
are driving in mountainous areas, for
example), the needle may fluctuate
slightly.
Please refuel early, since driving
to the last drop of fuel can result in
damage to the engine and/or catalytic
converter.<
When the ignition is turned on, the indi-
cator lamp in the fuel display will light
up briefly as a functional check.
BlueThe engine is still cold. Drive at
moderate engine and vehicle speeds. RedTo check the function, the warning
lamp in the coolant temperature gauge
will light up briefly when the ignition is
turned on.
If the lamp comes on while operating
the vehicle, the engine has overheated.
Switch the engine off immediately and
allow it to cool down.
Checking coolant level, refer to
page 125.
Between the blue and red zonesNormal operating range. It is not
unusual for the needle to rise as far as
the edge of the red zone in response to
high outside temperatures or severe
operating conditions.

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Service Interval Display Remaining distance for serviceThe displays shown in the illustration
appear for a few seconds when the
ignition key is in position 1 or after the
engine is started.
The next service due appears with the
message OILSERVICE or INSPECTION,
together with the distance remaining
before the next scheduled service.
The computer bases its calculations of
the remaining distance on the previous
driving style.
A flashing message and a "Ð" in front of
the number mean that the service
interval has already been exceeded by
the distance shown on the display.
Please contact your BMW center for an
appointment.

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Computer 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.
Cruising range The computer bases its calculations of
the cruising range on the previous
driving style.
Average speed If you continue to hold the button on the
turn signal lever, the average fuel
consumption last displayed for that
speed is recalculated from that point in
time.
Any time spent when the vehicle is
stationary and the engine is shut off is
ignored for the calculation.