2003 BMW M5 SEDAN brake fluid

Contents

Operation, maintenance
Owner service procedures

Special operating instructions:

Break-in procedures106
Driving notes107
Antilock Brake System107
Brake system108

Wheels and tires:

Tire inflation pressure109
Tire condition109
Tire replacement110
Wheel and tire
combinations111
Special characteristics of winter
tires112
Snow chains112

In the engine compartment:

Hood113
Engine compartment
essentials114
Washer fluids115
Engine oil115
Coolant117
Brake fluid118

Maintenance:

The BMW Maintenance
System119

Laws and regulations:

Technical modifications120
California Proposition
65 Warning120
OBD interface socket121

Replacement procedures:

Onboard tool kit124
Windshield wiper blades124
Lamps and bulbs124
Repairing a flat tire128
Battery131
Fuses132

Assistance, giving and
receiving:

Jump-starting133
Towing the vehicle135

16n

Indicator and warning lamps

Technology that monitors itself

The system runs a check on the
warning and indicator lamps marked
by "

l

" each time you switch on the
ignition. They each light up once for dif-
ferent periods of time.
If a fault should occur in one of these
systems, the corresponding lamp does
not go out after the engine is started or
it lights up while the vehicle is moving.
The following section describes how
you should respond.

Red: stop immediately

Alternator charge current

l

The battery is no longer being
charged. Indicates a defective
alternator drive belt or a problem with
the alternator's charge circuit. Please
contact the nearest BMW center.
You should never attempt to con-
tinue driving with a defective drive
belt, as the engine could overheat and
sustain serious damage. A defective
drive belt will also make the vehicle
harder to steer.

<

Engine oil pressure



l


May be accompanied by the
warning "STOP!ENGINE OIL-
PRESS" in the Check Control display
panel: stop the vehicle immediately and
switch off the engine. Check level of oil
in engine, top up as required. If oil level
is correct: please contact the nearest
BMW center.
Do not continue driving, as the
engine could sustain serious
damage from inadequate lubrication.

<



Brake hydraulic system

l

Have the brake fluid level
checked. Before driving further,
be sure to read the notes on pages 108
and 118.
The indicator lamp comes on together
with the "CHECK BRAKE LININGS"
message in the Check Control.
Brake hydraulic system warning
lamp for Canadian models.

66n
Text messages are used to alert the
driver to system malfunctions with the
ignition key in position 2 and higher.
The alert is accompanied by a gong.
1 Status symbol for messages
2 Display
3 CHECK button
Messages warning of system malfunc-
tions are assigned one of two priority
levels.
39mus027
Priority 1
These defects are immediately indi-
cated by a gong and a flashing warning
symbol 1. Simultaneous defects will be
displayed consecutively. These status
messages remain in the display until the
defects are corrected. They cannot be
deleted by pressing the CHECK
button 3:
>"RELEASE PARKINGBRAKE"
>"COOLANT TEMPERATURE"
The coolant is overheated. Stop the
vehicle and switch off the engine
immediately. Refer to page 117
>"STOP!ENGINE OILPRESS"
The oil pressure is too low. Stop the
vehicle and switch off the engine
immediately. Refer to pages 16, 115>"CHECK BRAKE FLUID"
The level has dropped nearly to the
minimum. Top up the brake fluid at
the earliest opportunity. Refer to
page 118. Have the source of the
brake fluid loss diagnosed and cor-
rected at your BMW center
>"TIRE DEFECT"

Reduce vehicle speed immediately
and stop the vehicle. Avoid hard
brake applications. Do not oversteer.
Refer to page 83
>"LIMIT"
*
This is displayed if the programmed
speed limit has been exceeded.
Refer to page 73.
Check Control

67n
OverviewControlsMaintenanceRepairsDataIndex
Check Control Priority 2
These displays appear for 20 seconds
with the ignition key in position 2. The
warning symbols remain after the mes-
sage disappears. The messages can be
recalled again with CHECK button 3.
>"TRUNKLID OPEN"
This message appears only when you
initially begin a trip
>"DOOR OPEN"
This message appears after a defined
road speed has been exceeded
>"FASTEN SEAT BELTS"
*
In addition to this message, an indi-
cator lamp with the safety belt icon
appears and an acoustic signal is
sounded
>"WASHER FLUID LOW"
Too low; top up fluid at the next
opportunity. Refer to page 115
>"CHECK ENGINE OIL LEV"
The oil level is at the absolute min-
imum, so add engine oil as soon as
possible. Refer to page 115. Until
then, do not drive more than approx.
30 miles (50 km)>"TIRE PRESSURE SET"
The Flat Tire Monitor has adopted the
tires' current inflation pressures as its
reference levels. Refer to page 82
>"TIRECONTROL INACTIVE"

Transient malfunctions and system
errors in the Flat Tire Monitor. Refer
to page 83
>"CHECK BRAKE LIGHTS"
A lamp has failed or the electrical cir-
cuit has a fault. Refer to pages 126
and 132 or consult a BMW center
>"CHECK LOWBEAM LIGHTS"
"CHECK SIDE LIGHTS"
"CHECK REAR LIGHTS"
"CHECK FRONT FOGLAMPS"
"CHECK LICPLATE LIGHT"
"CHECK HIGHBEAM LIGHT"
"CHECK BACK UP LIGHTS"
Defective bulb or circuit. Refer to
page 124 and following and
page 132 or consult a BMW center>"CHECK BRAKE LININGS"
Have the brake pads checked at your
BMW center. Refer to page 108
>"CHECK COOLANT LEVEL"
The coolant level is too low; top off
at the next opportunity. Refer to
page 118
>"CHECK FILLER CAP"
Check to see whether the fuel filler
cap has been properly closed. Refer
to page 21
>"ENGINE FAILSAFE PROG"
Indicates a malfunction in the elec-
tronic engine-management system,
which then reverts to an emergency
default program allowing continued
operation at reduced power and
lower engine speeds.
Please have the system inspected by
your BMW center
>
"OUTSIDE TEMPERATURE 24 7
(Ð 5.0 6)"This temperature display is only an
example. The current temperature is
displayed at outside temperatures of
37.5 7 (+3 6) and below. Refer also
to page 63.

108n
Brake systemBrake fluid level If the brake fluid level is too low and
brake pedal travel has become notice-
ably longer, there may be a defect in
one of the two brake system's hydraulic
circuits.
Proceed to the nearest BMW
center. Higher brake application
pressure may be necessary under these
conditions, and the vehicle may exhibit
a slight tendency to pull to one side
when the brakes are applied. Braking
distances may also be longer. Please
remember to adapt your driving style
accordingly.<
Disc brakesLimited vehicle use, extended periods
with the vehicle parked or in storage,
and operating conditions in which
braking is restricted to gentle, low-
pressure applications will all increase
the tendency for corrosion to form on
the rotors; this is often accompanied
by a simultaneous accumulation of con-
tamination 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; the pressure available
under the above conditions may not
provide adequate cleansing.
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 a good idea 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 pro-
cess helps dry the pads and rotors to
ensure that your brake system will
respond with undiminished efficiency
when you need it.When descending steep hills and
extended grades, downshift to a gear
that will allow you to continue safely
with only a minimal amount of braking.
By minimizing the loads placed on the
brake system, this strategy helps
ensure that optimal brake system
response will remain available at all
times.
Do not coast with the clutch
depressed or with the transmis-
sion or gearshift lever in Neutral. Do not
coast with the engine shut off. The
engine provides no braking effect when
the clutch is depressed and there is no
power-assist for braking or steering
when the engine is not running.
Never allow floor mats, carpets or any
other objects to protrude into the area
around the accelerator, clutch and
brake pedals and obstruct their move-
ment.<
Brake pads
For your own safety: use only
brake pads that BMW has
approved for your particular 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.<

114n
Engine compartment essentials 1 Reservoir for brake fluid (under
the housing of the microfilter)118
2 Auxiliary terminal for jump
starting1333 Engine oil dipstick115
4 Engine oil filler neck116
5 Coolant expansion tank1186 Reservoir for the intensive-cleaning
system115
7 Reservoir for the windshield and

headlamp washer system115
39mde150

118n
Coolant Brake fluidChecking coolant level and
adding coolantCorrect coolant level when the engine
is cold (approx. 68 7/20 6):
In the translucent container's visible
range, as far as the graduation marked
KALT/COLD.
1. Turn the cap counterclockwise
slightly in order to allow accumulated
pressure to escape
2. If the coolant is low, slowly add
coolant until the correct level is
reached Ð do not overfill.
Comply with the applicable envi-
ronmental laws regulating the dis-
posal of extended-duty antifreeze with
corrosion inhibitor.<39mde111
Brake fluid level
The warning lamp for the brake
system hydraulic circuits comes
on and/or the message "CHECK
BRAKE FLUID" appears in the
Check Control:
Brake fluid level too low.
To add brake fluidThe brake fluid reservoir is located
under the microfilter housing on the
driver's side of the vehicle. For adding
brake fluid or for determining and cor-
recting 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).
Brake fluid loss may result in extended
brake pedal travel. If this occurs, refer
to the information on page 108.
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 at
a BMW center. Refer also to the Service
and Warranty Information Booklet (US
models) or the Warranty and Service
Guide Booklet (Canadian models).
Brake fluid is hazardous to health and
damages the vehicle's paint. You
should always store it in its original
container and in a location which is out
of reach of children. Do not spill the
fluid and do not fill the brake fluid reser-
voir 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 dis-
posal of brake fluid.<

Everything from A to ZA
ABS (Antilock Brake
System)17, 107
Activated-charcoal filter91
Active seat43
Adding
brake fluid118t
engine coolant118t
engine oil116t
washer fluid115t
Adjusting
backrest41
head restraints43
mirrors48
seats40
steering wheel47
temperature89
Air conditioning90
Air distribution89
Air pressure, tires22, 109
Air supply89
Airbags17, 49
Alarm system35
Anchorage points
child-restraint system with
tether strap52
Antifreeze118
Antilock Brake System
(ABS)17, 107
Aquaplaning107, 109 Ashtray
front97
rear98
Attach vacuum cleaner98
AUC (Automatic recircu-
lated-air control)90
Automatic climate
control87
removing condensation
from the windows89
Automatic cruise control61
Automatic curb monitor46
Automatic dimming
exterior mirror48
interior rearview mirror48
Automatic recirculated-air
control (AUC)90
Automatic steering wheel
adjustment47
Automatic windshield
washer60
Average fuel
consumption75
Average speed76
Avoiding unintentional
alarms36
Axle loads142
B
Backrest, adjusting41
Backup lamps59
bulb replacement126t
Battery131
care131
charging131
discharged133t
Belts44
Beverage holder97
Blower89
BMW active seat43
BMW comfort seat42
BMW High Performance
Synthetic Oil117
BMW M sport seat41
BMW Maintenance
System119
BMW Universal
Transmitter93
Bottle holder, refer to
Beverage holder97
Brake fluid118
disposal118
Brake hydraulic system,
brake pads16
Brake system108
brake fluid level108
brake linings108
malfunctions108t
Break-in procedures106 Bulbs and lamps124
C
California Proposition
65 Warning120
Capacities143
Car telephone97
Cargo loading102
Cellular phone97
refer also to the separate
Owner's Manual97
Center (high mount) brake
lamp127
Central locking system26
key31
Charging the battery132t
CHECK button66
Check Control66
Check engine oil
level115t
Check tire inflation
pressure22t, 109
Child seats51
Child-restraint
installation53
Child-restraint system with
tether strap52
Cigarette lighter98
Clock70
refer also to the "Owner's
Manual for Onboard
Computer"