torque BMW 645CI COUPE&CONVERTIBLE 2004 Owners Manual

Controls
77Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
DSC Dynamic Stability Control
DSC optimizes vehicle stability during
acceleration and when starting from a full
stop, as well as optimizing traction. The
system recognizes any tendency for the
vehicle to assume an unstable attitude
such as oversteer or understeer; it then
counteracts this tendency with a combina-
tion of graduated reductions in engine
torque and selective braking intervention at
individual wheels. DSC provides optimal
stability within the limits defined by the
laws of physics.
The DSC is operational every time you start
the engine. DSC includes the functionality
of the DTC Dynamic Traction Control and
DBC Dynamic Brake Control, see below.
Indicator lamp
The indicator lamp goes out soon
after you start the engine.
The indicator lamp flashes:
DSC controls the drive and braking forces.
The indicator lamp stays lit:
DSC has been switched off via the button.
DTC Dynamic Traction Control
In special driving states, e.g. in deep snow,
DTC ensures maximum forward momen-
tum. The gain in forward momentum also
involves a reduction in driving stability.
DTC is active up to approx. 45 mph/
70 km/h, whereas DSC is only effective to
a limited degree.
You may find it useful to briefly activate
DTC under the following special circum-
stances:
>When rocking the vehicle and starting
off in deep snow or on loose road sur-
faces
>When ascending snow-covered hills,
and when driving in deep or on hard-
packed snow
>When driving with snow chains.
Activating DTC
>Press the DSC button briefly; the DTC
indicator lamp in the instrument cluster
lights up continuously.
Deactivating DTC again
Press the DSC button briefly again; the
DTC indicator lamp in the instrument clus-
ter goes out.
Switching off DSC
Press the DSC button until the DSC indica-
tor light in the instrument cluster lights up
continuously, however not longer than
approx. 10 seconds. DSC and DTC are
deactivated. In addition, the stability pro-
moting intervention of the active steering is
deactivated, refer to page 80.
A message appears on the Control Display.
Please note any supplementary information
that appears there.
To maintain optimal stability, drive
with the system on whenever possi-
ble.<
Reactivating DSC
Press the DSC button briefly; the indicator
lamp in the instrument cluster goes out.

Technical data
190
Technical data
Engine specifications
Weights
Never exceed either the approved
axle loads or the gross vehicle weight.
645Ci
Displacement
Number of cylinderscu in/cmm268.4/4,398
8
Maximum output
at engine speedhp
rpm325
6,100
Maximum torque
at engine speedlb ft/Nm
rpm 330/450
3,600
645Ci Coupe 645Ci Convertible
Curb weight
with manual transmission
with automatic transmission / SMGlbs./kg
3,781/1,715
3,792/1,7204,178/1,895
4,189/1,900
Approved gross weight
with manual transmission
with automatic transmission / SMGlbs./kg
4,619/2,095
4,630/2,1004,960/2,250
4,971/2,255
Load lbs./kg 838/380 772/350
Approved front axle load lbs./kg 2,271/1,030 2,381/1,080
Approved rear axle load lbs./kg 2,513/1,140 2,381/1,080
Luggage compartment capacity
Convertible: with convertible top com-
partment floor up, refer to page 32cu ft/l 15.9/450
–10.6/300
12.4/350

Everything from A to Z
210 Tools, refer to
Onboard tool kit 178
"Top 8" for portable
phone 149
Torque, refer to
Engine specifications 190
Touch tone dialing 150
Tow fitting 186
Towing 185
– tow fitting 186
– vehicles with automatic
transmission 186
– vehicles with SMG
Sequential manual
transmission 186
– with tow bar 186
– with tow-rope 187
– with tow truck 187
"Town / City" for desti-
nation entry 111
Tow-starting 187
Tracks
– random play
sequence 139, 140
– sample scan 139
Track width, refer to
Dimensions 191
Traction control, refer to
DSC Dynamic Stability
Control 77
Traffic congestion, refer to
Bypassing route
sections 120
Transmission
– automatic transmission
with Steptronic 58
– manual transmission 56
– SMG Sequential manual
transmission 56
Transporting children
safely 51
Transport securing device,
refer to Securing the
load 105
Tread depth, refer to
Minimum tread depth 167
"Treble", refer to
Adjusting the tone 128
"Trip computer" 70Trip computer 70
Trip-distance counter, refer
to Trip odometer 64
"Triple turn signal
activation" 60
Trip odometer 64
Trunk, refer to Luggage
compartment 30
Trunk lid, refer to Luggage
compartment lid 30
Turning circle, refer to
Dimensions 191
Turn signals 60
– indicator lamp 13
– replacing the bulbs 179
U
Underbody protection,
refer to the Caring for
your vehicle brochure
Uniform Tire Quality
Grading/UTQR 166
"Units" 72
Units
– average fuel
consumption 72
– temperature 72
Universal garage-door
opener, refer to
Integrated universal
remote control 94
Universal remote control,
refer to Integrated
universal remote
control 94
"Unlock button" 27
Unlock code 147
Unlocking
– from inside 30
– from outside 27
Unlocking and locking
doors, setting confir-
mation signals 28
"Update services" 158
V
Vehicle
– battery 181
– break-in procedure 102
– care 175
– care, refer to the Caring
for your vehicle brochure
– decommissioning, refer to
the Caring for your
vehicle brochure
– dimensions 191
– loading 104
– parking 55
– position, refer to
Displaying current
position 109
– washing, refer to the
Caring for your vehicle
brochure
– weights 190
"Vehicle settings" 27
"Ventilation" 92
Ventilation 92
– draft-free 92
– independent
ventilation 92
Vent outlets of automatic
climate control 88
"Vent settings" 91
Voice command system 20
Voice instructions for
navigation system 119
– muting 50, 119
– repeating 50, 119
– switching on/off 50, 119
– volume 119
Voice phone book 153
Volume 126
– audio sources 126
– portable phone 146
– setting speed-
dependent 128
– setting using buttons on
steering wheel 11
– voice instructions 119
Volume adjustment in audio
mode, front-to-rear 128
Volume of the luggage
compartment 190