2005 BMW 645CI COUPE&CONVERTIBLE maintenance schedule

Controls
97Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
To select the front passenger area:
Move the controller to the right.
Pressing the AUTO button raises and
lowers the air distribution settings on the
Control Display.<
Adapting temperature in upper body
region
1.Select "Vent settings" and press the con-
troller.
2.Select the field by moving the controller and
adjust the air distribution by turning the
controller.
Setting intensity of AUTO program
To meet your individual needs, you can weaken
or strengthen the intensity of the automatic cli-
mate control.
1.Select "Automatic programs" and press the
controller.
2.Select the desired intensity and press the
controller.
Convertible program
When the convertible top is opened, the con-
vertible program can also be selected. In the
convertible program, the automatic climate control is optimized for driving with the convert-
ible 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 installed.<
Ventilation
1Serrated dial for smoothly opening and
closing air vents
2Lever for changing 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-charcoal filter
provides additional protection by filtering gas-
eous pollutants from the outside air. Your BMW
center replaces this combined filter as a stan-
dard part of your scheduled maintenance.
You can have more detailed information shown
on the Control Display, refer to page70.

Mobility
167Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Fuel specifications
The engine uses unleaded gasoline only.
Required fuel
Premium unleaded gasoline
The minimum octane rating is 91.
If you use gasoline with this minimum octane
rating, the engine may produce knocking
sounds when starting at high outside tempera-
tures. This has no effect on the engine life.
Minimum Octane Rating corresponds to the
Anti Knock Index AKI and is determined accord-
ing to the so-called (R+M)/2 method.
Do not use leaded gasoline, as otherwise
the lambda probe and catalytic converter
will be permanently damaged.<
Use high-quality brands
Field experience has indicated significant dif-
ferences in fuel quality: volatility, composition,
additives, etc., among gasolines offered for sale
in the United States and Canada. Fuels contain-
ing up to and including 10 % ethanol or other
oxygenates with up to 2.8 % oxygen by weight,
that is, 15 % MTBE or 3 % methanol plus an
equivalent amount of co-solvent, will not void
the applicable warranties with respect to
defects in materials or workmanship.
The use of poor-quality fuels may result in
drivability, starting and stalling problems,
especially under certain environmental condi-
tions such as high ambient temperature and
high altitude.
Should you encounter drivability problems
which you suspect could be related to the fuel
you are using, we recommend that you respond
by switching to a recognized high-quality
brand.
Failure to comply with these recommendations
may also result in unscheduled maintenance.<

Maintenance
178
Maintenance
The BMW Maintenance
System
The BMW maintenance system supports the
preservation of the traffic and operating safety
of your BMW. The service schedule also
includes operations related to the vehicle's
comfort and convenience features, such as
replacement of the filters for the inside air. The
ultimate objective is to ensure economical
maintenance by providing the ideal service for
your vehicle.
Should the day come when you decide to sell
your BMW, you will find that a complete dealer
service history is an asset of inestimable value.
CBS Condition Based Service
Sensors and special algorithms take the differ-
ent driving conditions of your BMW into
account. Condition Based Service uses this to
determine the current and future service
requirements. By letting you define a service
and maintenance regimen that reflects your
own individual requirements, the system builds
the basis for trouble-free driving.
You can set the Control Display to show
remaining times or distances of selected main-
tenance intervals and legally mandated dead-
lines, refer to page70:
>Engine oil
>Brakes, front and rear separately
>Microfilter/activated-charcoal filter
>Brake fluid>Spark plugs
>Vehicle check
>Legally required tests depending on local
regulations
Your vehicle stores this information continu-
ously in the master key while the vehicle is
being driven. After accessing the data stored in
the master key, your BMW Service Advisor can
suggest precisely the right array of service pro-
cedures for your own individual vehicle. You
should therefore give your BMW Service Advi-
sor the key you last used to drive when you take
your vehicle in for service.
Make sure the date in the Control Center
is always set correctly, refer to page78,
as otherwise the effectiveness of CBS Condi-
tion Based Service is not ensured.<
Service and Warranty Information
Booklet for US models and Warranty
and Service Guide Booklet for
Canadian models
Please consult your Service and Warranty Infor-
mation Booklet for US models and Warranty
and Service Guide Booklet for Canadian models
for additional information regarding service
requirements.
Have service and repair operations per-
formed at your BMW center.
Take the time to ensure that these service pro-
cedures are confirmed by entries in your vehi-
cle's Service and Warranty Information Booklet
for US models and Warranty and Service Guide
Booklet for Canadian models. These entries
verify that your vehicle has received the speci-
fied regular maintenance, and may also be
required when submitting warranty claims.<