2004 BMW 645CI COUPE service

Controls
67Reference
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Display of a message
means that a Check Control message is
present.
Information and malfunction reports are
indicated by an illuminated indicator or
warning lamp symbol.
At the same time, a gong sounds and a text
message appears on the Control Display.
Supplementary instructions
Messages are assigned one of two priority
ratings:
Priority 1
These messages and malfunction reports
are signaled by a gong. If a number of mal-
functions occur simultaneously, they are
displayed in succession. These messages
cannot be deleted, and they remain on the display until the problem is corrected. Sup-
plementary information can also appear on
the Control Display.
To exit the menu:
Select and press the controller.
Priority 2
These status messages and malfunction
reports are indicated by the gong and dis-
played for approx. 20 seconds.
To hide a displayed message: briefly press
the CHECK button on the turn signal lever.
Check Control symbol and message
on Control Display
Depending on the status of the monitored
systems, various symbols are displayed:
No malfunctions are present in the
monitored systems.
Malfunctions are present in the moni-
tored systems.
Depending upon how serious the
problem is, a supplementary mes-
sage may also appear on the Control Dis-
play.
The symbols also indicate the status of the
service requirement display, refer to
page 66.

Everything under control
68
Calling up stored messages on
Control Display
Using CHECK button
1.Press the button longer:
The first stored message is displayed
2.Briefly press the button:
A new message appears each time you
briefly press the button.
Using Control Center
Control Center, for principle details, refer to
page 16:
1.Press button.
The start menu is opened
2.Press the controller to open the menu
3.Select "Service" and press the control-
ler
4.Select "Check Control messages" and
press the controller. The stored mes-
sages appear on the display
5.Select the desired message and press
the controller.The display disappears automatically after
a short time.
To exit the menu immediately:
Select and press the controller.
Displays after completion of trip
Malfunction reports generated during the
trip are shown consecutively when you
switch off the ignition.
Before the display disappears, you can dis-
play the messages once again. Press the
CHECK button for approx. 2 seconds.
If several messages are present, you can
continue to briefly press the CHECK button
to view them in succession.
The display
>cancels itself automatically after a brief
period
>can be canceled by again pressing the
CHECK button for approx. 2 seconds.

Controls
81Reference
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Communications
Navigation
Entertainment
Mobility
Airbags
The following airbags are located under the
marked covers:
1Front airbags for driver and front pas-
senger
2Coupe: head airbags
3Front side airbags
4Knee airbag for front passenger
5Knee airbag for driver
Protective effect
The front airbags help protect the driver
and front passenger by responding to fron-
tal impacts in which safety belts alone can-
not provide adequate restraint. When
needed, the head and side airbags help
provide protection in the event of a side
impact. The side airbags help restrain the
side of the occupant's upper torso, and the
head airbags help support the head while
also helping provide protection against any
objects penetrating into the passenger
compartment.
The airbags are deliberately not triggered
in every impact situation, e.g. less severe
accidents, certain rollover conditions, or
rear-end collisions.
For information on the correct sitting posi-
tion, refer to page 42.
Even if you adhere to all the instructions
injuries resulting from contact with airbags
cannot be fully excluded, depending on the
circumstances. The ignition and inflation
noise may provoke a mild hearing loss in
extremely sensitive individuals. This effect
is usually only temporary.Do not apply adhesive materials to
the cover panels of the airbags, cover
them or modify them in any other way.
Do not attempt to remove the airbag reten-
tion system from the vehicle. Never modify
or tamper with either the wiring or the indi-
vidual components in the airbag system.
This category includes the upholstery in the
center of the steering wheel, on the instru-
ment panel, the side trim panels on the
doors and on the Coupe the roof pillars
along with the sides of the headliner.
Do not attempt to remove or dismantle the
steering wheel.
Do not touch the individual components
directly after the system has been trig-
gered, because there is a danger of burns.
If you note any indication of system mal-
function, if you desire to have an airbag
deactivated, or if the airbag retention sys-
tem is triggered in response to an accident,
you should always entrust all inspection,
repair and dismantling operations to your
BMW center. Unprofessional attempts to
service the system could lead to failure in
an emergency or undesired airbag activa-
tion, either of which could result in personal
injury.<
Airbag warning information is also provided
on the sun visors.

Controls
83Reference
At a glance
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Communications
Navigation
Entertainment
Mobility
Never move the convertible top when
the rollover protection system is
raised.
No changes of any nature may be made to
the individual components of the rollover
protection system and wiring.
Work on the rollover protection system may
only be performed at a BMW center.
Unprofessional attempts to service the sys-
tem can lead to failure or malfunction.
For a system check and to ensure long-
term functioning, you must comply with the
maintenance intervals of the service
requirement display.<
Head-Up Display*
The concept
With the Head-Up Display important infor-
mation is projected into the driver's field of
view, e.g. navigation instructions. This
enables you to take in this information with-
out looking away from the road.
Switching on/off
Ignition key in position 2:
Press the button to activate or deactivate
this system.1Navigation instructions
2Display for cruise control
3Speed
Selecting displays
Control Center, for principle details, refer to
page 16:
1.Press button.
The start menu is opened
2.Press the controller to open the menu
3.Select "Display settings" and press the
controller
4.Select "HUD selection" and press the
controller
5.Select desired information of Head-Up
Display

A congenial climate
92 climate control is optimized for driving with
the convertible top open. In addition, the air
supply is increased as the speed increases.
If the convertible program has been
selected, it is automatically active every
time the top is opened.
The effect of the convertible program
can be greatly enhanced if the wind
deflector is fitted.<
Ventilation
You can use the serrated dials 1 to open
and close the vent outlets through an infi-
nitely-variable range, while the levers 2
allow you to adjust the airflow direction.
Do not drop any foreign bodies into
the vent outlets, as otherwise these
could be catapulted outwards and lead to
injuries.<
Ventilation for cooling
Adjust the vent outlets to direct the flow of
cool air in your direction, for instance, if the
interior has become too warm, etc.
Draft-free ventilation
Set the vent outlets so that the air flows
past you and is not directed straight at you.
Microfilter/activated-charcoal filter
The microfilter removes dust and pollen
from the incoming air. The activated-char-
coal filter provides additional protection by
filtering gaseous pollutants from the out-
side air. Your BMW center replaces this
combined filter as a standard part of your
scheduled maintenance.You can select a display of more detailed
information in the service requirement dis-
play, refer to page 65.
Independent ventilation
The independent ventilation blows air into
the passenger compartment to lower inte-
rior temperatures.
The independent ventilation is controlled
using the Control Center. You can set two
different times for the system to start.
The independent ventilation remains on for
30 minutes. It can also be switched on and
off directly. Since the system uses a sub-
stantial amount of electrical current, you
should refrain from activating it twice in
succession without allowing the battery to
be recharged in normal operation between
use.
The independent ventilation is ready for
use at any outside temperature up to igni-
tion key position 1.
The air emerges through the upper body
region vent outlets in the instrument panel.
These vent outlets must be open for the
system to operate.
Switching on and off directly
Control Center, for principle details, refer to
page 16:
1.Open "Climate"
2.Select "Ventilation" and press the con-
troller
3.Select "Automatic ventilation" and
press the controller
4.Select "Parked car ventilation" and
press the controller.

Things to remember when driving
102
Things to remember when driving
Break-in procedures
To ensure that your vehicle continues to
provide optimized economy of operation
throughout an extended service life, we
request that you devote careful attention to
the following section.
Engine and differential
Up to 1,200 miles/2,000 km:
You should attempt to vary both vehicle
and engine speeds. Until the break-in
period has been completed, you should
also refrain from exceeding an engine
speed of 4500 rpm or a driving speed of
100 mph/160 km/h.
Always obey all official speed limits.
Avoid full-throttle operation and use of the
transmission's kickdown mode during
these initial miles.
Once you have driven 1,200 miles/
2,000 km, the engine and vehicle speeds
can be gradually increased.
SMG Sequential manual
transmission
Do not use the acceleration assistant dur-
ing the break-in period, refer to page 60.
Tires
Due to technical factors associated with
their manufacture, tires do not achieve their
full traction potential until after an initial
break-in period. Therefore, drive reservedly
during the first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve opti-
mized contact and wear patterns between
brake pads and rotors.
Clutch
The function of the clutch is only at its opti-
mized level after a distance driven of
approx. 300 miles/500 km. During this
break-in period, engage the clutch gently.
After component replacement
You should also comply with these break-in
procedures should the components men-
tioned above need to be replaced at a later
point.
General driving notes
Hot exhaust system
Extreme temperatures occur at the
catalytic converter on this and every
catalyst-equipped vehicle. Do not remove
the heat shields installed adjacent to vari-
ous sections of the exhaust system, and
never apply undercoating to them. When
driving, standing at idle and while parking,
take care to avoid possible contact
between the hot exhaust system and any
highly flammable materials such as hay,
leaves, grass, etc. Such contact could lead
to a fire, and with it the risk of serious prop-
erty damage as well as personal injury.<
Parking vehicle
Condensation forms in the air conditioner
system during operation, and then exits
under the vehicle. Traces of condensed
water under the vehicle are thus normal.
Before driving into a car wash
Fold in the exterior mirrors manually, as
otherwise they could be damaged due to
the width of the vehicle.
Hydroplaning
When driving on wet or slushy roads,
reduce road speed. If you do not, a
wedge of water can form between tires and

Navigation
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Driving tips
133Reference
At a glance
Controls
Communications
Mobility
The stations of the last selection criterion
are displayed once again after a short time.
Depending on which key you have used to
open the vehicle, other stored stations are
displayed.
Changing a memory location
Control Center, for principle details, refer to
page 16:
1.Select "Presets" and press the control-
ler
2.Select the desired station
3.Press the controller.
Other menu items are displayed
4.Select "Store" and press the controller
5.Turn the controller until the desired
memory location is selected.
The number of the memory location
appears beside the name or frequency
of the station
6.Press the controller.
The station is stored.
RDS Radio Data System
RDS transmits additional information in the
FM frequency range. RDS stations have the
following properties:
>In the case of broadcasting networks
that transmit over a number of frequen-
cies, there is an automatic switch to the
frequency with the best reception qual-
ity
>If the reception conditions are good, the
station names are shown on the Control
Display. If the reception is weak or dis-
rupted, it can take some time before the
station names appear.
Weather Band*
Weather Radio is a service of the National
Oceanic and Atmospheric Administration –
NOAA – of the U.S. Department of Com-
merce. Weather messages are repeated
every four to six minutes and are routinely
revised every one to three hours, or more
frequently if needed. Most of the stations
operate 24 hours daily. During severe
weather, National Weather Service fore-
casters can interrupt the routine weather
broadcasts and substitute special warning
messages. If you have a question concern-
ing NOAA Weather Radio, please contact
your nearest National Weather Service
Office, or write to National Weather Service
– Attn: W/OM11 –, National Oceanic and
Atmospheric Administration, 1325 East-
West Highway, Silver Spring, MD. 20910.
Selecting Weather Band
Control Center, for principle details, refer to
page 16:
1.Select "WB" and press the controller
2.Select the Weather Band station and
press the controller.
It can occur that the Weather Band station
is not available in some regions.
Satellite radio*
You can receive up to 100 different chan-
nels with high tone quality.
The channels are offered to you in pre-
defined combinations. To receive the chan-
nels of your choice, you must have this
combination enabled.

Radio
136 4.Turn the controller to select a memory
location and press the controller.
The channel is stored. The stations of the
last selection criterion are displayed once
again after a short time.
Changing channel with buttons on
CD player
Briefly press the button for the correspond-
ing direction.
The system switches to the next enabled
channel.
Notes
When there is a signal blockage or the
transmission is suspended momentarily for
more than 4 seconds, a message appears
on the Control Display.
Service may be interrupted or
unavailable for specific reasons such
as environmental or topographic condi-
tions and others that Satellite Radio cannot
directly control.
Signal may not be available under tunnels,
in parking garages, next to tall buildings,
nearby trees with dense foliage, nearby
mountains or other possible strong sources
of radio interference.
Service should resume normally after the
source of signal unavailability has been
cleared.<