2000 BMW 540I SEDAN ECO mode

101n
RepairsIndexOverview Controls Car care Technology Data
Automatic climate controlAir supply
In the "AUTO" program, the air
flow is controlled automati-
cally. AUTO will appear in the display
(refer to the overview on page 98). Use
"+" and "-" to vary the air flow. When
your setting is displayed by bars, the
automatic air flow is switched off. Auto-
matic air distribution maintains its set-
ting. You can reactivate the automatic
air flow by pressing the "AUTO" button.
When you press "Ð " during operation at
minimum blower speed all displays are
canceled: The fan, heating and air con-
ditioner are switched off. The outside
air supply is closed. By pressing any
button of the automatic climate control
(except the "REST" button 16), you can
switch the system back on.
To defrost windshield and door
windows
This program quickly removes
ice and condensation from the
windshield and the side windows.
Air conditioner
The air is cooled and dehu-
midified and Ð depending on
the temperature setting Ð warmed again
when the air conditioner system is
switched on. Depending on the
weather, the windshield may fog over
briefly when the engine is started.
Use the button to switch off the air con-
ditioner at outside temperatures below
approx. +417 (+56). This will help to
prevent the windows from fogging up.
If the windows fog over after switching
the air conditioner off, switch it back on.
Condensation forms in the air con-
ditioner system during operation,
which then exits under the vehicle.
Traces of condensed water of this kind
are thus normal.<
Automatic recirculated-air
control (AUC)
You can respond to unpleas-
ant external odors by tempo-
rarily stopping the flow of outside air.
The system then recirculates the air
currently within the vehicle. Press the
button repeatedly to run through the
following control sequence:
>Indicator lamps off: Outside air flow
operational.
>Left-hand indicator lamp on Ð AUC
mode: The system recognizes pollut-
ants in the outside air and blocks the
flow of air when necessary. The sys-
tem then recirculates the air currently
within the vehicle.
Depending on the air quality, the au-
tomatic system then switches back
and forth between outside air supply
and recirculation of the air within the
vehicle.
>Right-hand indicator lamp on: The
flow of external air into the vehicle is
permanently blocked. The system
then recirculates the air currently
within the vehicle.
If you have a multifunction steering
wheel with the recirculated-air button
(refer to page 25), you can also use it to
switch between "Off" and the recircu-
lated-air mode or AUC and the recircu-
lated-air mode.

107n
RepairsIndexOverview Controls Car care Technology Data
BMW Universal Transmitter
*
1 Program the BMW Universal Trans-
mitter as described above under
"Programming."
2 Press and hold the programming key
on the receiver of the device for
about two seconds or until the pro-
gramming lamp on the device comes
on.
3 Press the desired channel key of the
BMW Universal Transmitter three
times.
If you have additional questions,
please consult your BMW cen-
ter.<
Clearing the channel keys
Read and comply with the safety
precautions on page 105.<
Individual channel keys cannot be
cleared. However, the three channel
keys can be cleared together in the fol-
lowing manner:
>Press and hold the two outer channel
keys of the BMW Universal Transmit-
ter until the indicator lamp flashes,
and then release the keys.
All channel keys are cleared.
User's informationDo not use this BMW Universal Trans-
mitter with any garage door opener that
lacks safety "stop" and "reverse" fea-
tures as required by federal safety stan-
dards (this includes any garage door
opener model manufactured before
April 1, 1982).
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
(1) This device may not cause harmful
interference, and
(2) This device must accept any inter-
ference received, including interference
that may cause undesired operation.

130n
Brake system Winter operationBrake fluid level
The warning lamp for the brake
hydraulic system comes on, or
the "CHECK BRAKE FLUID"
message appears in the Check
Control.
The brake fluid level is too low in the
reservoir (refer to page 152).
If the brake fluid level is too low and
brake pedal travel has become notice-
ably longer, there may be a defect in
one of the brake system's hydraulic
circuits.
Proceed to the nearest authorized
BMW center. Higher brake appli-
cation pressure may be necessary
under these conditions, and brake
pedal travel may be significantly longer.
Please remember to adapt your driving
style accordingly.<
The warning lamp comes on together
with the "CHECK BRAKE PADS" mes-
sage in the Check Control.
Brake pads
The warning lamp for the brake
pads comes on, or the "CHECK
BRAKE PADS" message ap-
pears in the Check Control:
The brake pads have reached their
minimum pad thickness. Proceed to the
nearest authorized BMW center as
soon as possible to have the pads
replaced.
For your own safety: Use only
brake pads that BMW has
approved for your specific vehicle
model. BMW cannot evaluate non-
approved brake pads to determine if
they are suited for use, and therefore
cannot ensure the operating safety of
the vehicle if they are installed.<
The onset of winter is often accompa-
nied by rapid changes in weather.
Adaptations in driving style should be
accompanied by preparations on the
vehicle itself to ensure that your vehicle
operation through the winter remains
safe and trouble-free.CoolantEnsure that the coolant mixture con-
tains the year-round ratio of 50: 50 of
water and antifreeze/corrosion protec-
tion. This mixture provides protection
against freezing down to approx. -347
(-376). Replace the coolant every four
years.LocksBMW door lock deicer can be used to
free the locks if they are frozen. This
deicer also contains lubricant.
After using deicer, treatment with BMW
lock barrel grease is recommended.