2001 BMW M3 COUPE brakes

11n

Controls and features
Operation, care and maintenance

Lamps:

Side lamps/Low beams81
Instrument lightning81
High beams/Parking lamps82
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, rear93
Clothes hooks94

Loading and transporting:

Through-loading system95
Ski bag96
Cargo loading97
Roof-mounted luggage rack98

Special operating instructions:

Break-in procedures102
Driving notes103
Catalytic converter103
Antilock Brake System
(ABS)104
Disk brakes106
Brake system107
Winter operation108
Power steering110
Cellular phones110
Radio reception110

Wheels and tires:

Tire inflation pressure111
Tire condition111
Tire replacement112
Tire rotation113
Wheel and tire
combinations114
Winter tires115
Snow chains115
Approved wheel and tire
specifications116

Under the hood:

Hood118
Engine compartment120
Washer fluids122
Washer nozzles122
Engine oil123
Coolant125
Brake fluid126
Vehicle Identification
Number126

Care and maintenance:

The BMW Maintenance
System127
Caring for your vehicle128
Airbags133
Vehicle storage133

Laws and regulations:

Technical modifications134
California Proposition
65 Warning134
OBD connector135

63n
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.

68n
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.

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
101n
IndexDataTechnologyRepairsCar careControlsOverview
Special operating instructions:
Break-in procedures102
Driving notes103
Catalytic converter103
Antilock Brake System
(ABS)104
Disk brakes106
Brake system107
Winter operation108
Power steering110
Cellular phones110
Radio reception110
Wheels and tires:
Tire inflation pressure111
Tire condition111
Tire replacement112
Tire rotation113
Wheel and tire
combinations114
Winter tires115
Snow chains115
Approved wheel and tire
specifications116Under the hood:
Hood118
Engine compartment120
Washer fluids122
Washer nozzles122
Engine oil123
Coolant125
Brake fluid126
Vehicle Identification
Number126
Care and maintenance:
The BMW Maintenance
System127
Caring for your vehicle128
Airbags133
Vehicle storage133
Laws and regulations:
Technical modifications134
California Proposition
65 Warning134
OBD connector135
Car care

103n
IndexDataTechnologyRepairsCar careControlsOverview
Brakes: do not drive with your foot
resting on the brake pedal. Even
light but consistent pedal pressure can
lead to high temperatures, brake wear
and possibly even brake failure.
Aquaplaning:
When driving on wet or slushy roads,
reduce vehicle speed. If you do not, a
wedge of water may form between the
tires and the road surface. This
phenomenon is referred to as aqua-
planing, or hydroplaning, and can lead
to partial or complete loss of traction,
vehicle control and braking effective-
ness.
Driving through water:
Do not drive through water on the road
if it is deeper than 1 foot (30 cm), and
then only at walking speed. Otherwise,
the vehicle's engine, the electrical
systems and the transmission may be
damaged.
Rear window shelf:
Never use it to store heavy or hard
objects, otherwise, occupants could be
injured if the vehicle is braked hard.<
The catalytic converter reduces harmful
exhaust emissions.
It is designed for use with unleaded fuel
only. Even minute quantities of lead
would be enough to permanently
damage both the catalytic converter
and the system oxygen sensor.
To ensure efficient, trouble-free engine
operation and avoid potential damage:
>Be sure to comply with the scheduled
maintenance requirements
>Fill the fuel tank well before it is
empty
>Tow-start only when the engine is
cold. If you attempt to tow-start with
a warm engine, unburned residual
fuel in the catalytic converter could
ignite and cause damage. It is better
to start the vehicle with an outside
starting aid
>Avoid other situations in which the
fuel is not burned or burns incom-
pletely such as frequent or extended
starter engagement or repeated start
attempts in which the engine does
not start. Stopping and restarting an
engine which is running properly
does not present a problem. Never
allow the engine to run with any of
the spark plug cables disconnected. Be sure to observe the instruc-
tions above to prevent unburned
fuel from reaching the catalytic
converter. Otherwise there is danger of
overheating and damage to the cata-
lytic converter.
Extreme temperatures occur at the
catalytic converter on this and every
catalyst-equipped vehicle. Heat shields
are installed adjacent to some sections
of the exhaust system. Never remove
these shields; do not apply under-
coating to their surfaces. When driving,
standing at idle or when parking, take
precautions to avoid contact between
the hot exhaust system and easily flam-
mable materials (grass, hay or leaves,
for example). Such contact could lead
to a fire, resulting in personal injury and
property damage.<
Driving notes Catalytic converter

104n
Antilock Brake System (ABS)The concept ABS keeps the wheels from locking
while braking, thereby enhancing active
driving safety. The reason: locked
wheels are dangerous. When the front
wheels slide, the driver loses steering
control over the vehicle. Traction loss at
the rear wheels can cause the rear end
to break into an uncontrolled skid.
Based on current road conditions, ABS
can brake the vehicle within the
shortest possible distance and with the
greatest possible driving stability (on
straight-aways and curves, asphalt, ice,
wet road surfaces, etc.).
ABS is designed to meet two essential
requirements during every brake appli-
cation:
>To help provide vehicle stability
>To help maintain steering control and
maneuverability Ð on all types of road
surfaces (asphalt, concrete, mud,
wet, snow, ice). Braking with ABSThe system becomes operative once
the vehicle exceeds a speed of approx.
6 mph (10 km/h). Whenever the
vehicle's speed drops below approx.
4 mph (6 km/h), the ABS is deactivated.
This means that the wheels can lock in the final phase of a panic stop Ð a factor
of no significance in actual use.
The ABS system works best in situa-
tions requiring maximum pressure on
the pedal ("panic stop"). Do not let up
on the brake pedal even after it starts
pulsating. Since the vehicle maintains
steering responsiveness, you can
nevertheless avoid possible obstacles
with a minimum of steering effort.
The ABS closed-loop control circuit
cycles in fractions of a second. Pulsa-
tion at the brake pedal shows you that
ABS is active, that you are braking
within the ABS' braking range and that
you are thus pushing the limit of the
system. In addition, a pulsation Ð a
result of the control function cycles Ð
indicates to the driver that the vehicle
speed should be reduced to adapt to
road surface conditions when there is
reduced traction and grip between tires
and road surface (slippery road
surface).
On road surfaces with a loose surface
layer over a firm base, e.g. on gravel or
snow, as well as when driving with
snow chains on, braking distances may
be longer for a locked-wheel condition.
However, ABS continues to provide
enhanced vehicle stability and steering
response under these conditions.
Information for your safetyNot even ABS can suspend the laws of
physics. The consequences of hitting
the brakes when there is inadequate
distance between vehicles, when the
vehicle is driven at excessive speeds
through curves, or during aquaplaning,
remain the driver's responsibility. You
should never allow the added safety of
ABS to lull you into a false sense of
security, or mislead you into taking risks
that could affect your own safety and
that of others.
Do not make any modifications to
the ABS system.
Service procedures on ABS are to be
performed by authorized technicians
only.< Antilock Brake System (ABS)/
Cornering Brake Control (CBC) CBC is an advanced engineering
design of the ABS. When braking while
cornering at high speed or braking
during high lateral acceleration, or
when braking during a lane change,
vehicle stability is improved and
steering response is enhanced.

106n
Disk brakesDisk brakes furnish optimum decelera-
tion and braking control and greater
fade resistance under heavy use.
When the vehicle is driven only occa-
sionally, during extended periods when
the vehicle is not used at all, and in
operating conditions where brake appli-
cations are less frequent, there is an
increased tendency for corrosion of the
disks and accumulation of contamina-
tion on the brake pads. This occurs
because the minimal pressure that must
be exerted by the pads to clean the
disks by brake applications is not
reached.
If the brake disks are corroded, they will
tend to respond to braking with a
pulsating effect which even extended
application will fail to cure.
For your own safety: use only
brake pads which BMW has
approved for your specific vehicle
model. BMW cannot evaluate non-
approved brake pads to determine if
they are suited for use, and therefore
cannot ensure the operating safety of
the vehicle if they are installed.<
Driving notes While driving on wet roads or in heavy
rain, it is a good idea to apply light
pressure to the brake pedal every few
miles or kilometers. Watch traffic condi-
tions to ensure that this maneuver does
not endanger other road users. The
heat which is generated by the brake
applications helps to dry the brake
pads and disks.
Maximum braking force is obtained
while the wheels continue to rotate,
peaking when the wheels remain on the
verge of locking without actually doing
so. ABS maintains this state automati-
cally. If the ABS should ever fail, pump
the brakes if possible (refer to
page 109).
Extended or steep mountain descents
should be driven in the gear in which
only minimal periodic brake application
is required. This avoids excessive strain
on the brakes and possible
impairment of the braking effect. Stay
within the allowable engine speed
range. For further information, refer to
page 69.
The braking effect of the engine can be
further increased by downshifting, into
first gear, if necessary. Should engine braking prove inade-
quate, you should still avoid extended,
continuous braking. Instead of main-
taining low to moderate pressure over
an extended period of time, you should
decelerate the vehicle by applying more
substantial force on the pedal (watch
for following traffic). Pause before
repeating the brake application. This
staggered braking technique allows the
brakes to cool in the intervals between
active braking phases, preventing over-
heating and ensuring that full braking
capacity remains available at all times.
Do not coast with the clutch
depressed, with the shift lever in
neutral or with the engine shut off. The
engine does not provide any braking
effect with the transmission in neutral or
with the engine shut off.
Do not allow floor mats, carpets or any
other objects to protrude into the area
around the brake pedal, the clutch or
the accelerator which could obstruct
their freedom of movement.<

128n
Washing your vehicle You can have your BMW washed in an
automatic car wash, even when it is
new. Car wash systems that do not
employ brushes are preferable.
Wipe away tough dirt and loosen and
remove dead insects before washing
the vehicle.
To prevent spots, avoid washing when
the hood is still warm, or immediately
after and during exposure to strong
sunlight.
When using an automatic car wash, be
sure that:
>The car wash system is suited for the
dimensions of your vehicle
>No damage will occur on vehicles
with attached body accessories (such
as spoilers or antennas). Consult the
car wash operator if necessary
>The wheels and tires of your vehicle
cannot be damaged by the convey-
ance devices of the car wash system
>The vehicle is cleaned with minimum
brush pressure, and that plenty of
water is available for washing and
rinsing. Vehicles with rain sensor:
Clean the windshield regularly. Wax
from automatic car washes or insects
can cause malfunctions in the rain
sensor function.
Turn the rain sensor off (refer to
page 66) when going through an
automatic car wash, otherwise, damage
could occur from unintended wiper
activation.<
Parts of the vehicle which are inacces-
sible to the automatic washer Ð such
as door sills, door and hood edges, etc.
Ð should be cleaned by hand.
In the winter months, it is especially
important to ensure that the vehicle is
washed on a regular basis. Large
quantities of dirt and road salt are
difficult to remove, and they also cause
damage to the vehicle.
If spray wands or high-pressure
washers are used, be sure to
maintain an adequate distance between
the spray source and the vehicle's
surface. Inadequate distance and
excessive pressure can damage or
weaken the finish, making it more
susceptible to subsequent attack. In
addition, moisture could penetrate to
vehicle components, leading to long-
term damage.<
When cleaning the headlamps,
please observe the following:
Do not wipe dry with a cloth
(scratches). Never use abrasives or
strong solvents. Remove dirt and
contamination (such as insects) by
soaking with BMW Car Shampoo and
then rinsing with plenty of water.
Always use a deicer spray to remove
accumulated ice and snow Ð never use
a scraper.<
After washing the vehicle, apply
the brakes briefly to dry them.
Braking efficiency might otherwise be
reduced by the moisture and the brake
rotors could also corrode.<
Caring for your vehicle