Page 95 of 221

A congenial climate
94
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 select a display of more detailed infor-
mation on the Control Display, refer to page66.
Independent ventilation*
The independent ventilation blows air into the
passenger compartment to lower interior tem-
peratures.
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 substantial
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 ignition 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
page16.
1.Open "Climate".
2.Select "Parked car operation" and press the
controller.
3.Select "Automatic ventilation" and press
the controller.4.Select "Parked car ventilation" and press
the controller.
Independent ventilation is switched on and the
LED flashes.
Preselecting activation times
Control Center, for principle details, refer to
page16.
1.Open "Climate".
2.Select "Parked car operation" and press the
controller.
3.Select "Activation time" and press the con-
troller.
If you select two activation times that are
in sequence, they must differ by at least
31 minutes.<
4.Move the controller to the left or right to
select "Time 1" or "Time 2".
5.Select the time and press the controller.
The first time setting is highlighted.
6.Turn the controller to make the adjustment.
7.Press the controller to apply the setting.
The next setting is highlighted.
8.Make the remaining adjustments. After the
last adjustment, the time is stored.
Page 170 of 221

Mobility
169Reference
At a glance
Controls
Driving tips
Communication
Navigation
Entertainment
Fuel specifications
The engine uses lead-free 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 affect on the engine life.
Minimum octane rating corresponds to the Anti
Knock Index AKI and is determined according
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.<
Page 181 of 221

Maintenance
180
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 page66:
>Engine oil
>Brakes, front and rear separately
>Microfilter/activated-charcoal filter
>Brake fluid>Spark plugs
>Vehicle check
>Legally mandated inspections 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 hand over to the BMW Service
Advisor 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 page74,
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 on service require-
ments.
BMW recommends that you have service
and repair operations performed 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.<