2000 BMW 323i SEDAN heating

11n

Controls and features
Operation, care and maintenance

Lamps:

Parking lamps/Headlamps82
Dash lighting82
High beams/Parking lamps83
Fog lamps83
Interior lamps83
Reading lamps84

Controlling the climate
for pleasant driving:

Automatic climate control86
Seat heating91
Roller sun blind91

Interior conveniences:

HiFi system92
Glove compartment92
Storage compartments93
Cellular phones95
Ashtray, front95
Cigarette lighter96
Ashtray, rear96

Loading and transporting:

Through-loading system97
Ski bag98
Cargo loading99
Roof-mounted luggage rack100

Special operating instructions:

Break-in procedures104
Driving notes104
Catalytic converter105
Antilock Brake System
(ABS)106
Disc brakes108
Brake system109
Winter operation110
Power steering111
Cellular phones112
Radio reception112

Wheels and tires:

Tire inflation pressures113
Tire condition113
Tire replacement114
Tire rotation115
Wheel and tire
combinations116
Winter tires117
Snow chains117
Approved wheel and tire
specifications118

Under the hood:

Hood120
Engine compartment122
Washer fluids124
Washer nozzles124
Engine oil125
Coolant128
Brake fluid129
Vehicle Identification
Number130

Care and maintenance:

The BMW Maintenance
System131
Caring for your car132
Airbags137
Vehicle storage137

Laws and regulations:

Technical modifications to the
vehicle138
OBD interface socket139

20n

Indicator and warning lamps

Technology that monitors itself

Many of the systems of your BMW
monitor themselves automatically, both
during engine starts and while you are
driving. Indicator and warning lamps
that are identified by "

l

" are tested for
proper functioning whenever the igni-
tion key is turned. They each light up
once for different periods of time.
If a fault should occur in one of these
systems, the corresponding lamp does
not go out after the engine is started, or
it lights up while the vehicle is moving.
You will see how to react to this below.

Red: Stop immediately

Battery charge

l


The battery is no longer being
charged. There is a malfunction
of the alternator ribbed V-belt or in the
charging circuit of the alternator. Please
contact the nearest BMW center.
If the ribbed V-belt is defective, do
not continue driving. If you do so,
the engine could be damaged due to
overheating. If the ribbed V-belt is de-
fective, increased steering effort is also
required.<
Engine oil pressure l
Stop the vehicle and switch off
the engine immediately. Check
the engine oil and top up as required. If
the oil level is correct, please contact
the nearest BMW center.
Do not continue driving. If you do
so, the engine could be damaged
because of inadequate lubrication.<
Tire Pressure Control (RDC)
* l
In addition, an acoustic signal is
sounded: A tire failure has oc-
curred. Reduce vehicle speed immedi-
ately and stop the vehicle. Avoid hard
brake applications. Do not oversteer.
For additional information: Refer to
page 80.
Brake hydraulic system l
If the lamp comes on when the
parking brake is not engaged:
Check the brake fluid level. Before driv-
ing further, be sure to read the notes on
pages 109 and 129.
Brake warning lamp for Cana-
dian models.

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
31n
IndexDataTechnologyRepairsCar careControlsOverview
Driving:
Steering/Ignition lock61
Starting the engine61
Switching off the engine62
Parking brake63
Manual transmission64
Automatic transmission with
Steptronic65
Turn signal indicator/Headlamp
flasher68
Wiper/Washer system/Rain
sensor68
Rear window defroster70
Cruise control71
Everything under control:
Odometer73
Tachometer73
Energy Control73
Fuel gauge74
Temperature gauge74
Service Interval Display74
Check Control75
Clock75
Onboard computer76
Technology for safety and
convenience:
Park Distance Control (PDC)78
Dynamic Stability Control
(DSC)79
Tire Pressure Control (RDC)80Lamps:
Parking lamps/Headlamps82
Dash lighting82
High beams/Parking lamps83
Fog lamps83
Interior lamps83
Reading lamps84
Controlling the climate for
pleasant driving:
Automatic climate control86
Seat heating91
Roller sun blind91
Interior conveniences:
HiFi system92
Glove compartment92
Storage compartments93
Cellular phones95
Ashtray, front95
Cigarette lighter96
Ashtray, rear96
Loading and transporting:
Through-loading system97
Ski bag98
Cargo loading99
Roof-mounted luggage rack100

89n
IndexDataTechnologyRepairsCar careControlsOverview
Automatic climate control Air supply

By pressing the left or right half
of the button, you can vary the
air supply. By doing this, you switch off
the automatic control of the air supply.
Nevertheless, the automatic air distri-
bution remains unchanged.
When you set the lowest blower speed
by pressing the left half of the button,
all of the displays are canceled: The
blower, heating and air conditioner are
switched off, and the air supply is
stopped. You can reactivate the system
by pressing any button of the automatic
climate control.
To defrost the windshield and
side windows
This program quickly removes
ice and condensation from the
windshield and side windows.
Air conditioner
The air is cooled and dehumidi-
fied and Ð depending on the
temperature setting Ð rewarmed when
the air conditioner system is switched
on.
Depending on the weather, the wind-
shield may fog over briefly when the
engine is started.
Switch off the air conditioner at outside
temperatures below approx. 42 7
(5 6). This will help to prevent the win-
dows from fogging up.
If the windows fog over after switching
the air conditioner off, switch it back
on.
Condensation forms in the air
conditioner system during opera-
tion, 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 unpleasant
external odors by temporarily
blocking the outside air. The system
then recirculates the air already within
the vehicle. By repeated actuation of
the button, you can select one of three
different operation modes.
>Indicator lamps off: Fresh air flows
into the vehicle
>Left-hand indicator lamp on Ð AUC
mode: The system detects pollutants
in the outside air and responds by
deactivating the outside air flow as
required. The system then recircu-
lates the air already within the
vehicle.
Depending on air quality require-
ments, the system automatically
switches between outside air supply
and recirculation of the air already
within the vehicle.
>Right-hand indicator lamp on: The
flow of outside air is permanently
blocked. The system recirculates the
air already within the vehicle.
If the windows fog over in the
recirculated air mode, switch this
mode off and increase the air supply as
required.<

91n
IndexDataTechnologyRepairsCar careControlsOverview
Seat heating
*
Roller sun blind
*
The seat cushion and backrest can
be heated with the ignition key in posi-
tion 2.
You can call up different heating modes
by repeatedly pressing the keys.
When the three indicator lamps are illu-
minated, the highest heating mode is
activated. One lamp indicates the low-
est heating mode. The temperature is
regulated with a thermostat in each
mode.
You can also switch the higher heating
modes off directly:
Press and hold the button slightly
longer.460us285
To actuate, press the button briefly with
the ignition key in position 2.
The illustration depicts the arrangement
of the buttons if the vehicle is fully
equipped. This may vary, depending on
the equipment actually installed.460us286

108n
Disc brakesDisc brakes furnish optimum decelera-
tion and braking control and greater
fade resistance under heavy use.
When the vehicle is driven only occa-
sionally, during extended periods when
the vehicle is not used at all, and in oper-
ating conditions where brake applica-
tions are less frequent, there is an
increased tendency for corrosion of the
rotors and accumulation of contamina-
tion on the brake pads. This occurs
because the minimal pressure that must
be exerted by the pads to clean the
rotors by brake applications is not
reached.
If the brake rotors are corroded, they
will tend to respond to braking with a
pulsating effect that even extended
brake applications will fail to cure.
For your own safety: Use only
brake pads that BMW has ap-
proved for your particular 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.<
Driving notesWhen driving in wet conditions and in
heavy rain, it is effective to apply light
pressure to the brakes every few miles
or kilometers. Be aware of traffic condi-
tions to ensure that this maneuver does
not endanger other road users. The
heat that is generated by the brake ap-
plications helps to dry the brake pads
and rotors.
Maximum braking force is obtained
while the wheels are not locked, but
rather when they are still barely turning
immediately prior to locking. ABS main-
tains this state automatically. If the ABS
fails, you should revert to the staggered
braking technique described above on
page 110.
Long or steep mountain descents do
not necessarily lead to reduced braking
efficiency if you drive downhill with the
transmission in a gear that allows mini-
mal brake applications (or, with an au-
tomatic transmission, in an appropriate
lower range).
You can further increase the engine's
braking effect by selecting a lower gear,
downshifting as far as first gear or plac-
ing the selector lever in position 1.Should engine braking prove inade-
quate, you should still avoid extended,
continuous braking. Instead of main-
taining low to moderate pressure over
an extended period of time, you should
decelerate by applying more substantial
pressure to the brake pedal (watch for
following traffic), releasing the pedal,
and then repeating the application
(staggered braking). The cooling phases
between active braking intervals pre-
vent the brakes from overheating, thus
ensuring that full braking capacity re-
mains available at all times.
Do not coast with the clutch de-
pressed or with the shift lever or
selector lever in neutral. Do not drive
with the engine shut off. The engine
provides no braking effect when the
clutch is depressed or the transmission
is in neutral, and there is no power-
assist for braking or steering when the
engine is not running.
Do not allow floor mats, carpets or any
other objects to protrude into the area
around the brake pedal, the clutch or
the accelerator which could obstruct
their freedom of movement.<

113n
IndexDataTechnologyRepairsCar careControlsOverview
Information for your safetyThe factory-approved radial tires are
matched to the car and have been se-
lected to provide optimum safety and
driving comfort on your car.
It is not merely the tire's service life, but
also driving comfort and Ð above all else
Ð driving safety that depend on the con-
dition of the tires and the maintenance
of the specified tire pressure.
Incorrect inflation pressure is a frequent
cause of tire damage. It also signifi-
cantly influences the roadholding ability
of your BMW.
Check tire inflation pressures reg-
ularly Ð include the space-saver
spare tire or spare tire Ð at least twice a
month and before beginning a longer
trip. If this is not done, incorrect tire
pressures can cause driving instability
and tire damage, ultimately resulting in
an accident.<
Tire tread Ð Tire damageInspect your tires frequently for tread
wear, signs of damage and for foreign
objects lodged in the tread. Check the
tread depth.
The tread depth should not be any shal-
lower than 0.12 inches (3 mm). Below
this tread depth, there is a signiÞcant
risk of aquaplaning, even at relatively
moderate speeds and with only small
amounts of water on the road.
We recommend that you always re-
place the tires once the tread wears to
0.12 inches (3 mm). If you continue to
use the tires, wear indicators appear in
the tread at 0.063 inches (1.6 mm).390de331
Do not drive on a deflated (flat)
tire. A flat tire greatly impairs
steering and braking response, and can
lead to complete loss of control over
the vehicle.
Avoid overloading the vehicle so that
the permitted load on the tires is not ex-
ceeded. Overloading can lead to over-
heating and increases the rate at which
damage develops inside the tires. You
could have a blowout as a result.
Unusual vibrations encountered during
normal vehicle operation can indicate
tire failure or some other vehicle defect.
This is also true for irregularities in the
vehicle's handling characteristics, such
as a pronounced tendency to pull to the
left or right. Should this occur, respond
by immediately reducing your speed.
Proceed carefully to the nearest BMW
center or professional tire center, or
have the vehicle towed in to have it and
its tires inspected.
Tire damage (up to and including blow-
outs) can endanger the lives of both the
vehicle occupants and other road
users.<
Tire inflation pressures Tire condition

168n
Self-diagnostics All of the important electrical and elec-
tronic systems in the vehicle are tested
regularly and automatically Ð the driver
does not have to perform any extra
operations or adjustments.
The indicator lamps also come on
briefly after the ignition has been turned
on.
While you are driving, the functional
status of the actuator motors (for the
windshield wipers, power windows,
seats, sunroof, etc.) is constantly ana-
lyzed by current measurements in their
relays.460de177
In the same manner, the electrical re-
sistance of the airbag ignition genera-
tors and all of the remaining airbag
components is measured at all times.
Any fault in this system would be de-
tected immediately by a current fluctua-
tion that would necessarily accompany
it. The fault would be indicated immedi-
ately by the airbag warning lamp.
Even after you shut off the engine, the
overall functional status of your vehicle
is monitored. For example, all of the
flaps of the heating and ventilation sys-
tem travel to the nearest limit position.
This action ensures that the system will
be able to provide defrosting, regard-
less of other circumstances (if a mal-
function in the heating or ventilation
system should occur during the night
while the vehicle is parked, for in-
stance).
A calibration cycle runs every tenth time
the engine is shut off. During this cycle,
the actuator motors of all the heating
and ventilation flaps travel to their limit
stops in both directions. The limit posi-
tions and the return travel paths are
checked in this manner in order to en-
sure that appropriate adjustments for
the operating elements can be made at
any time.You will hear the sounds of the air flaps
as the heater/ventilation system carries
out its self-diagnostic functions after the
ignition is shut off. All of the other self-
diagnostics functions operate silently in
the background.
Any faults detected during these self-
diagnostics can be read out by your
BMW center during the next regularly-
scheduled maintenance and corrected
with a minimum of time.