2001 BMW M3 CONVERTIBLE wheel torque

80n
Dynamic Stability Control (DSC)

The concept

DSC helps maintain vehicle stability,
even in critical driving situations.
The system optimizes vehicle stability
during acceleration and when starting
from a full stop, as well as optimizing
traction. In addition, the system recog-
nizes unstable vehicle conditions
(understeering or oversteering in
curves, for example) and holds the
vehicle on course by intervening via the
engine and by braking intervention at
the individual wheels within the limits
defined by the laws of physics.
The system starts up automatically
each time you start the engine.
The laws of physics cannot be
repealed, even with DSC. The
results of driving irresponsibly rest with
the driver. We therefore urge you to
avoid using the additional safety margin
of the system as an excuse for taking
risks. Do not make any modifications to
the DSC system. Service procedures
on the system are to be performed by
authorized technicians only.<
You will find additional details
concerning DSC in the chapter
"Advanced technology" on page 170.
Indicator lamp
The indicator lamp on the instru-
ment cluster will go out shortly
after the ignition has been
switched on. Refer to page 21.
>Indicator lamp flashes: the system is
active and is controlling the drive
torque based on driving conditions
>If the indicator lamp fails to go out
after the engine has been started, or
if it comes on during normal driving
and stays on: there is a system
malfunction or the system was deac-
tivated with the button. You can
continue to drive the vehicle
normally, but without DSC. Please
consult your BMW center for repairs.
To deactivate the systemPress the button – the indicator lamp
comes on and stays on.
When DSC is deactivated, you are
driving with conventional power
transfer.
We recommend that you turn the
system off for increased traction:
>When rocking the vehicle or starting
off in deep snow or on loose surfaces
>When driving with snow chains.
Refer also to page 110.
To help maintain driving stability,
drive with the DSC activated
whenever possible.< To reactivate the systemPress the button again; the indicator
lamp goes out.

82n
Tire Pressure Warning (RDW)Activating/deactivating the
systemThe system is automatically active in
ignition key position 2 and is therefore
always on during driving.
To deactivate the system: tap the
button, the indicator lamp will light up
yellow.
To activate the system: tap the button
again; the indicator lamp goes out.
Deactivate the system while driving
with snow chains, since false warnings
and undetected losses in pressure are
possible under these kinds of condi-
tions.
In the event of a flat tire
The indicator lamp on the instru-
ment cluster will light up red in
the event of a significant loss in
tire pressure. In addition, an acoustic
signal is sounded. To come to an imme-
diate stop, reduce speed, while
avoiding any sudden, jerky braking or
steering maneuvers.
Fix the flat tire using the M Mobility
system (refer to page 153).
Resetting the indicator lamp: the red
indicator lamp has to be turned off
manually after putting on a new wheel.
At this point, hold the RDW button
down until the indicator lamp goes out.
Re-initialize the system afterward.
The RDW cannot alert you to
severe and sudden tire damage
caused by external factors.
The RDW will not identify the natural,
even loss of pressure in all four tires,
either.<
Check the tire inflation pressure
on a regular basis and correct if
necessary. Refer to page 27.
Under certain circumstances, there
may be false warnings or a delayed
detection of losses in pressure when
driving on snow-covered or slippery
road surfaces.
A sporty driving style (slip at the wheels
receiving the torque, high lateral accel-
erations) can lead to delayed RDW
warnings.<
System malfunctionAs long as there is still a malfunction,
the indicator lamp on the instrument
cluster will remain yellow.
Please contact your BMW center for
additional information.

170n
Dynamic Stability Control (DSC) Safety belt tensioner

Highly sensitive sensors monitor the
number of revolutions of the wheels,
steering angle, lateral acceleration,
brake pressure and the movement of
the vehicle around its vertical axis.
If differences in wheel speed should
occur, the system will recognize the
potential dangers associated with
wheel spin and will reduce the drive
torque; if necessary, it will do so using
brake intervention at the rear wheels as
well.
When instable vehicle operating condi-
tions are detected, the application of
the brakes with DSC can also act on the
front wheels to stabilize the vehicle.
You may need some time to become
accustomed to this system's interven-
tion. However, it provides optimum
drive force and vehicle stability.
The braking intervention may be
accompanied by a certain degree of
noise.The safety belt tensioner makes sure
that the belt tightens during a head-on
collision to ensure that occupants
remain firmly positioned in their seats.
A gas-pressure system retracts the
buckle assembly to tension the
shoulder and lap belts within fractions
of a second. This tends to reduce the
tendency to slide under the lap belt
even more.

Everything from A to Z
191n
IndexDataTechnologyRepairsCar careControlsOverview
SSafety belt tensioner170
Safety belts57
seat-integrated safety
belts (SGS)51
Safety buttons38
Safety defects, reporting7
Seat heating93
Seat memory54
Seat-integrated safety belts
(SGS)51
Seats, adjusting48
Service and Warranty
Information Booklet131
Service Interval
Display75, 131
Service Manual131
Side airbags61
Side impact61
Side marker lamps84
lamp malfunction147t
Side turn signals, bulb
replacement148t
Ski bag98
Snow chains110, 119, 120
Socket97
Spark plugs182
Speaker96
Special features of winter
tires119
Speedometer18Sport mode
identification83
Sports seat49
Starting
problems67t, 105
Starting the engine66
Steering112
Steering lock66
Steering wheel
adjusting55
refer also to Multifunction
steering wheel (MFL)24
Stopping the vehicle67
Storage compartments95
Storing your vehicle140
Stowing cargo100
Stroke178
Summer tires118, 120
Sun visors53
Surface ice warning77
Switching off the engine67
Symbols, used4
Synthetic oils128
TTachometer73
Tail lamps149
replacing bulbs149t
Tank capacity181
Technical data178
Technical
modifications6, 141Telephone hookup96
Temperature display
ice warning77
interior temperature90
outside temperature77
Temperature gauge
engine coolant74
Temperature layering92
Tilt alarm36, 43
remote control36
Tire
codes118, 120
condition115
damage115t
failure, repairing153
inflation pressure28, 115
pressure monitor81
pressure
specifications28
replacement116
rotation117
summer117
treads115
wear indicator115
winter117
Tire and wheel
specifications120
Tire Pressure Warning
(RDW)81
indicator lamp22
Tire Quality Grading116
Tires and wheels118Tools146t
Torque178
Tow fittings165t
Towing eyelets165
Towing the vehicle165t
Track179
Traction Control System
refer to DSC80
Transmission68
Transporting children
safely58
Tread depth, tire115
Trip odometer73
Trunk, refer to luggage
compartment40
Turn signal indicator23, 69
bulb replacement148t
Turning radius179
Two-way radios112
UUniform Tire Quality
Grading116
Used batteries,
disposal159t
Used engine oil,
disposal128tVVacuum cleaner97
Vehicle battery157