2004 BMW M3 CONVERTIBLE brake

113
ClutchThe clutch will also begin to function
optimally after about 300 miles/500 km.
Drive cautiously during this break-in
period and do not press the clutch or
shift at high engine speeds.
General driving notes
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.
Hydroplaning: 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
hydroplaning, and can lead to partial or
complete loss of traction, vehicle con-
trol and braking effectiveness.
Driving through water: do not drive
through water on the road if it is deeper
than 1 ft/30 cm, and then only at walk-
ing speed. Otherwise, the vehicle's
engine, the electrical systems and the
transmission may be damaged.<
Portable phone in the vehicleBMW recommends using mobile com-
munications devices, e.g. portable
phones, inside the vehicle with a suit-
able outside antenna. Otherwise, it can-
not be ruled out that the vehicle elec-
tronics and portable phone may
interfere with each other.
Break-in procedures
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114
Antilock Brake System (ABS)The conceptABS keeps the wheels from locking
during braking, thereby enhancing
active driving safety.Braking with ABSIf you are in a situation that requires full
braking, you will exploit the full benefits
of ABS system if you apply maximum
pedal pressure – panic stop. Since the
vehicle maintains steering responsive-
ness, you can avoid possible obstacles
with a minimum of steering effort,
despite the full brake application.
Pulsation at the brake pedal combined
with sounds from the hydraulic circuits
indicates to the driver that ABS is in its
active mode.Dynamic Brake Control (DBC)DBC is included in the DSC, refer to
page 86.
If you apply the brakes rapidly, this sys-
tem automatically generates maximum
braking force boost and thus helps to
achieve the shortest possible braking
distance in panic braking situations. All
of the benefits of the ABS are exploited
under these circumstances.Do not reduce the pressure on the
brake pedal for the duration of the
brake application. When the brake
pedal is released, the DBC is deacti-
vated.
Cornering Brake Control (CBC)CBC is an advanced engineering devel-
opment of ABS. When braking during
cornering with high lateral accelera-
tion, or when braking during a lane
change, vehicle stability is improved
and the steering response is enhanced.
Brake systemBrake fluid levelLow brake fluid level in the reservoir
combined with longer than usual pedal
travel may indicate a defect in one of
the brake system's hydraulic circuits.
Proceed to the nearest autho-
rized BMW center. Higher brake
application pressure may be necessary
when stopping, and the vehicle may
exhibit a slight tendency to pull to one
side. Brake distances may even be
longer. Please remember to adapt your
driving style accordingly. with the vehicle parked or in storage,
and operating conditions in which brak-
ing is restricted to gentle, low-pressure
applications will all increase the ten-
dency for corrosion to form on the
rotors; this is often accompanied by a
simultaneous accumulation of contami-
nation on the brake pads. The pads
must exert a certain minimal level of
pressure against the rotors for the disc
brakes' inherent self-cleaning effect to
remain effective.

115
If the brake rotors are corroded, they
will tend to respond to braking with a
pulsating effect that even extended
brake applications will fail to cure.
When driving in heavy rain and on wet
roads it is useful to apply light pressure
to the brake pedal every few miles.
Monitor traffic conditions to ensure that
this maneuver does not pose a hazard
to you or to other road users. The heat
generated in this process helps dry the
pads and rotors to ensure that your
brake system will respond with undi-
minished efficiency when you need it.
Extended or steep mountain descents
should be driven in the gear in which
only minimal periodic brake applica-
tions are required. By minimizing the
loads placed on the brake system, this
strategy helps ensure that optimal
brake system response will remain
available at all times. Stay within the
allowable rpm range. For additional
information, refer to page 79.Do not coast with the clutch
depressed or with the gearshift
lever in idle. Do not coast with the
engine switched off. If you do so the
engine provides no braking effect and
there is no power assist for braking or
steering when the engine is not run-
ning.<
Brake pads
For your own safety: use only
brake pads that BMW has
released for your particular vehicle
model. BMW cannot evaluate non-
approved brake pads to determine if
they are suitable for use, and therefore
cannot ensure the operating safety of
the vehicle if they are installed.<
Hardtop*It is not necessary to remove the fabric
top even in the winter, when the hard-
top is generally in constant use. But you
can also remove it easily at any time.
Before the fabric top is stored in the
convertible top compartment, it must
be absolutely dry in order to avoid
water spots and mildew from forming.
The hardtop offers reading lamps and
clothes hooks that can be used just by
pressing. It is also possible to mount a
luggage rack on the roof. Please con-
sult your BMW center.
When hanging clothing from the
hooks, be sure that they will not
obstruct the driver's vision. Do not hang
heavy objects on the hooks. If you do
so, they could cause personal injury
during braking or evasive maneuvers.<
Two people are required for installation
or removal. Work with extreme caution
in order to avoid paint damage and
damage to the body or hardtop.
To facilitate hardtop installation or
removal, you can obtain a specially
designed hardtop lift* or hardtop rack*
at your BMW center.
Brake system
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125
1Filler neck for windshield and head-
lamp washer cleaning system126
2Coolant expansion tank128
3Auxiliary terminal for jump-starting –
positive terminal147
4Engine oil filler neck127
5Expansion tank for SMG Drivelogic
hydraulic unit – checking and possi-
ble refilling by your BMW center70
6Engine oil dipstick126
7Filler neck for brake fluid129Engine compartment essentials
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129
3. If necessary, add coolant. If the cool-
ant is low, slowly add coolant until
the correct level is reached — do not
overfill.
Brake fluidIndicator lamp
The brake warning lamp comes
on when the parking brake is
not engaged: brake fluid level
too low, refer to page 18.
Brake warning lamp for Cana-
dian models.
Adding brake fluidFor adding brake fluid or for determin-
ing and correcting the cause of brake
fluid loss, consult your BMW center.
Your BMW center is familiar with the
specifications for factory-approved
brake fluids – DOT 4.
Due to loss in brake fluid, pedal travel
can lengthen and braking efficiency
may be reduced. Refer to the informa-
tion on page 114.
Brake fluid is hygroscopic, that is,
it absorbs moisture from the air
over time.
In order to ensure the safety and reli-
ability of the brake system, have the
brake fluid changed every two years by
a BMW center. Refer also to the Service
and Warranty Information Booklet for
US models or the Warranty and Service
Guide Booklet for Canadian models.
Brake fluid is toxic and damages the
vehicle's paint. You should always store
it in its closed original container and in
a location inaccessible to children.
Do not spill the brake fluid and do not
fill the brake fluid reservoir beyond the
MAX mark. The brake fluid could ignite
upon contact with hot engine parts and
cause serious burns.<
Comply with the applicable envi-
ronmental laws regulating
the disposal of brake fluid.<
Coolant
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139
Rear lamps1Turn signal indicator
2Backup lamp
21 watt bulb
3Tail lamp/brake lamp
All bulbs in the fender are
designed using LED technology.
Please contact a BMW center in case of
a malfunction.<
Bulbs in the luggage compartment lid
1. Using a screwdriver, loosen the clip
2. Fold the trim panel down – see
arrow 1. Disengage the bulb holder –
see arrow 2 – and remove it
3. Applying light pressure, turn the bulb
to the left. Remove and exchange the
bulb
4. Press the bulb holder into position
until you hear it engage
5. Reinstall the trim with the clip.
Lamps and bulbs
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140
Center high-mount brake lampLED strip in luggage compartment lid.
Please contact a BMW center in case of
a malfunction.
License plate lamps5 watt bulb
1. Place a screwdriver in the slot and
press toward the left to release the
lens
2. Replace the bulb.
Repairing a flat tire
Precautions in case of a flat tire:
Stop the vehicle as far as possible
from passing traffic; switch on the haz-
ard warning flashers.
Turn the steering wheel to the straight-
ahead position and engage the steering
lock. Shift into 1st or reverse and
engage the parking brake.
All passengers should be outside the
vehicle and well away from your imme-
diate working area – behind a guardrail,
for instance.
If necessary, set up your warning trian-
gle or portable hazard warning lamp on
the roadside at an appropriate distance
from the rear of the vehicle. Comply
with all safety guidelines and regula-
tions.<
M Mobility systemYou will find an M Mobility system in
your BMW M3 Convertible for repairing
flat tires. With this system you can
apply a sealing liquid to the inside of
the tire that seals off the damaged point
and then continue driving.
The M Mobility system makes trans-
porting a spare wheel superfluous,
thereby reducing the amount of weight
you have to carry around.
Lamps and bulbs

Everything from A to ZA
ABS Antilock Brake
System 114
indicator lamp 19
Accessories, refer to For
your own safety 5
Accident, refer to Emer-
gency call 146
Activated-charcoal filter 100
Adding brake fluid 129
Adding liquid sealant
Mobility system 142
Additional sources of infor-
mation 4
Air conditioning mode
automatic climate
control 98
Air distribution
automatic climate
control 98
Air distribution, individual 98
Air outlets, refer to Ventila-
tion 96
Air pressure, refer to Tire
inflation pressure 25, 118
Air recirculation, refer to
Recirculated-air mode 99
Air supply
automatic climate
control 98
Air, drying, refer to Air con-
ditioning mode 98Airbags 55
deactivating 55
indicator lamp 18, 57
sitting safely 46
Airing out, refer to Ventila-
tion 96
AKI, refer to Fuel specifica-
tions 25
All-season tires, refer to
Winter tires 122
Alternative oils 127
Antifreeze
coolant 128
washer fluid 126
Antilock Brake System
(ABS) 114
indicator lamp 19
Anti-theft system 30
Approved axle loads, refer
to Weights 156
Approved gross weight,
refer to Weights 156
Armrest 101
Artificial leather, refer to the
Caring for your vehicle
brochure
Ashtray
front 103
rear 103
Assistant systems, refer to
Dynamic Stability Control
(DSC) 86AUC Automatic recircu-
lated-air control 99
AUTO program, refer
to Automatic air distribu-
tion 98
Automatic
air distribution 98
air supply 98
cruise control 77
headlamp control 91
Automatic car wash, refer to
the Caring for your vehicle
brochure
Automatic climate control 96
Automatic curb monitor 52
Automatic dimming, interior
rearview mirror 54
Automatic recirculated-air
control (AUC) 99
Automatic windshield
washer, refer to Rain sen-
sor 76
Average fuel
consumption 84
Average speed 84
Axle loads, refer to
Weights 156
B
Backrest
unlocking 49Backrest, refer to Seat
adjustment 47
Backup lamps 69
bulb replacement 139
Bandages, refer to First-aid
kit 23
Bar, towing 149
Battery 144
charge 144
disposal 144
indicator lamp 18
jump-starting 147
remote control 30, 31
Battery charge current 18
Battery charge indicator
lamp 18
Belts, refer to Safety
belts 50
Beverage holders 102
Blower
automatic climate
control 98
BMW Maintenance
System 130
BMW sports seat 47
Bore, refer to Engine
data 154
Bottle holders, see Bever-
age holders 102
Brake fluid 129
indicator lamp 18, 129
level 129