traction control BMW M5 SEDAN 2003 Owners Manual

80n
Dynamic Stability Control (DSC)DSC maintains vehicle stability, even in
critical driving situations.
The system optimizes vehicle stability
during acceleration and when starting
from a full stop, as well as enhancing
traction. In addition, the system recog-
nizes unstable vehicle conditions
(understeering or oversteering, for
example) and holds the vehicle on a
sure course by intervening via the
engine and by braking at the individual
wheels.
The system starts up automatically
each time you start the engine.Indicator lamp
The indicator lamp in the instru-
ment cluster goes out shortly
after you switch on the ignition.
Refer to page 17.
Indicator lamp flashes:
The system is active and governs drive
and braking force.
If the indicator lamp fails to go out after
the engine is started, or if it comes on
during normal driving and stays on:
There is a system malfunction or the
system was deactivated with the button.
You can continue to drive the vehicle
normally, but without DSC. Please con-
sult your BMW center for repairs.
To deactivate the systemPress the button, the indicator lamp
lights up and remains on continuously.
When DSC is deactivated, you are
driving with conventional power
transfer.
In the following exceptional circum-
stances, it may be effective to deacti-
vate the DSC for a short period:
>When rocking the vehicle or starting
off in deep snow or on loose surfaces
>When driving with snow chains.39mde124
To reactivate the systemPress the button again; the indicator
lamp goes out.
The laws of physics cannot be
repealed, even with DSC. An
appropriate driving style always
remains the responsibility of the driver.
Do not use the extra safety margins fur-
nished by these systems as an excuse
for taking unnecessary risks. DSC system.
The system responds to sudden, high-
intensity applications of force to the
brake pedal by automatically braking
the vehicle with maximum boost to
achieve the shortest possible braking
distances during "panic stops." This
system exploits all the benefits of ABS.
Do not reduce the pressure exerted
against the brake pedal until the
braking maneuver has been completed.
DBC is deactivated when you release
the pedal.

106n
To ensure that your vehicle provides
maximum economy throughout a long
service life, we request that you
observe the following.
Your BMW M5 is a masterpiece of
superlative technology. To ensure
that you derive maximum satisfaction
from its extensive array of advanced
features while simultaneously creating
the basis for many years of driving plea-
sure, we urge you to observe the fol-
lowing precautions during the initial
period of operation.<
Engine and differentialUp to 1,200 miles (2,000 km):
Drive at varying engine speeds and
road speeds, but do not exceed
5,500 rpm or 105 mph (170 km/h)
during this period.
Comply with all official speed limits.
Do not depress the accelerator pedal to
the full-throttle position.
Following the Break-in inspection at
1,200 miles (2,000 km), you can gradu-
ally increase engine or road speeds.
You should also comply with these
break-in procedures if the engine or dif-
ferential is replaced later in the course
of the vehicle service life.
TiresOwing to technical factors associated
with their manufacture, tires do not
achieve their full traction potential until
an initial break-in period has elapsed.
Thus drive with extra care during the
initial 200 miles (300 km).
Comply with all official speed limits.
When the vehicle is operated on
wet or slushy roads, a wedge of
water may from between the tire and
the road surface. This phenomenon is
referred to as aquaplaning, or hydro-
planing, and can lead to partial or com-
plete loss of traction, vehicle control
and braking effectiveness. Reduce your
speed on wet roads.<
Brake systemApproximately 300 miles (500 km) must
elapse before the brake pads and
rotors achieve the optimal pad-surface
and wear patterns required for trouble-
free operation and long service life later
on.
To break-in the separate parking brake
drums, apply the parking brake lightly
when coasting to a standstill (at a traffic
signal, for instance), provided that
traffic conditions allow you to do so. To
avoid corrosion, repeat this procedure
from time to time.
The brake lamps do not come on
when the parking brake is applied.
Vacuum for the brake system servo unit
on your BMW is available only when the
engine is running. When you move the
vehicle with the engine shut off Ð when
towing, for instance Ð substantially
higher levels of pedal force will be
required to brake the vehicle. optimally after about 300 miles
(500 km). Engage the gears carefully
during the break-in period.
Break-in procedures

107n
OverviewControlsMaintenanceRepairsDataIndex
Driving notes Antilock Brake System
Brakes:
Do not rest your foot on the brake
pedal while driving. Even light but con-
sistent 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 phe-
nomenon is referred to as aquaplaning,
or hydroplaning, and can lead to partial
or complete loss of traction, vehicle
control and braking effectiveness.
Driving through water:
When there is water on the roads, do
not drive in it if it is deeper than 1 ft
(30 cm). If the water is at that depth,
drive only at walking speed, otherwise
the vehicle can sustain damage to the
engine, the electrical systems and the
transmission.
Rear parcel tray:
Do not place heavy or hard objects on
the rear parcel tray. If you do so, they
could pose a danger to vehicle occu-
pants during a braking or evasive
maneuver.
Clothes hooks:
When suspending clothing from the
hooks, ensure that they will not obstruct
the driver's vision. Do not hang any
heavy objects on the hooks, otherwise,
passengers could be injured e.g. during
any hard braking or evasive maneuvers,
or during an accident.<
The conceptThe Antilock Brake System (ABS) keeps
the wheels from locking during braking,
thereby enhancing active driving safety.
With ABS, the shortest possible braking
distances are achieved under most
conditions (on straight-aways and in
curves, on asphalt, ice, wet road sur-
faces, etc.).Braking with ABSIf you are in a situation that requires
full braking, you will exploit the full ben-
efits of the ABS system if you apply
maximum pedal pressure ("panic stop").
Pulsation at the brake pedal combined
with sounds from the hydraulic circuits
indicates to the driver that ABS is in its
active mode.

110n
Tire replacementTo maintain good handling and vehicle
response, use only tires of a single
tread configuration from a single manu-
facturer. BMW tests wheel and tire
combinations and approves them.DOT Quality GradesTreadwear
Traction AA A B C
Temperature A B C
All passenger car tires must con-
form to Federal Safety Require-
ments in addition to these grades. rating based on the wear rate of the tire
when tested under controlled condi-
tions on a specified government test
course.
For example, a tire graded 150 would
wear one and one-half (1g) times as
well on the government course as a tire
graded 100. The relative performance
of tires depends upon the actual condi-
tions of their use, however, and may
depart significantly from the norm due
to variations in driving habits, service
practices and differences in road char-
acteristics and climate.
TractionThe traction grades, from highest to
lowest, are AA, A, B and C.
Those grades represent the tire's ability
to stop on wet pavement as measured
under controlled conditions on speci-
fied government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.
The traction grade assigned to
this tire is based on straight-
ahead braking traction tests, and does
not include acceleration, cornering,
hydroplaning, or peak traction charac-
teristics. highest), B and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive tem-
perature can lead to a sudden flat tire.
The grade C corresponds to a level of
performance which all passenger car
tires must meet under the Federal
Motor Car Safety Standard No. 109.
Grades B and A represent higher levels
of performance on the laboratory test
wheel than the minimum required by
law.
The temperature grade for this tire
is established for a tire that is
properly inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either separately or
in combination, can cause heat buildup
and possible tire failure. applicable on the tire sidewall between
tread shoulder and maximum section
width. For example:
Treadwear 200
Traction AA
Temperature A

Everything from A to Z
151n
OverviewControlsMaintenanceRepairsDataIndex
Time
calling up70
changing70
refer also to the "Owner's
Manual for Onboard
Computer"
Time of arrival,
estimated75
Timer70
Tire
condition109
damage109t
inflation
pressure22t, 109
labeling111
pressure monitor82
replacement110
tread109
Tire Quality Grading110
Tools124t
Torque140
Tow fittings135t
Towing the vehicle135t
Track141
Traction Control System,
refer to DSC80
Transmitter key26
Transporting children
safely51
Tread depth, tires109
Tread wear indicator109 Trip odometer63
Trunk, refer to Luggage
compartment32
Turn signal indicator18, 59
bulb replacement125t
Turning circle141
U
Uniform Tire Quality Grading
(UTQR)110
Universal Transmitter93
Use antifreeze,
radiator118t
Used batteries132 V
Vehicle battery131
Vehicle key26
Vehicle Memory55
Ventilation91
Ventilation in the rear91
Ventilation while parked
activating72
refer also to the "Owner's
Manual for Onboard
Computer"
Ventilation while parked,
refer to Parked-car venti-
lation system92
Ventilation, draft-free91
W

Warm feet Ð cool head91
Warning lamps16
Warning messages66
Warning triangle20
Warranty and Service Guide
Booklet (Canadian
models)119
Washer fluids115t
Washer reservoir,
filling115t
Washer system60
Water on the roads107
Wear indicator in the
tires109
Weights142
Wheel and tire
combinations111
Wheelbase141
Width141
Windows36
convenience operation27
defrosting89
Windshield washer60
reservoir, filling115t
Windshield wiper60
Winter tires112
Wiper system60
Working in the engine
compartment113t
X
Xenon lamp125