air condition BMW Z3 2002 Owner's Manual

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IndexDataTechnologyRepairsMaintenanceControlsOverview
Tire replacement Tire rotationTire ageThe date on which the tire was manu-
factured is indicated by the code on the
sidewall:
DOT ... 2501 indicates that the tire was
manufactured in week 25 of 2001.
BMW recommends the replacement
of all tires when the tires are no more
than 6 years old, even if a tire usage of
10 years is possible.
Spare tires over 6 years old should be
used only in case of emergency. A tire
of this age should be replaced by a new
tire immediately, and should not be
fitted together with new tires.
Between the axlesTread wear at the front and rear axle is
different and will vary according to indi-
vidual driving conditions. In the interest
of safety and optimal vehicle response,
we advise against rotating tires from
front to rear and vice versa.
If rotating the tires between the axles is
under consideration for economic
reasons, the costs for remounting the
wheels must be calculated against any
savings which might result from the
anticipated extension in tire life. Rota-
tion should always be carried out at
short intervals, with a maximum of
3,000 miles (5,000 km). Consult your
BMW center for more information.Should you decide to rotate the tires,
it is essential to comply with the
following:
Rotate wheels on the same side of the
vehicle only, otherwise braking effi-
ciency and road grip could be adversely
affected.
Following rotation, correct the tire infla-
tion pressure.
If tires with different sizes are
mounted on the front and rear
axles (refer to the information beginning
on page 116), the wheels may not be
rotated from one axle to the other.<

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IndexDataTechnologyRepairsMaintenanceControlsOverview
Special features of winter tires Snow chains
*
Choosing the right tireBMW recommends winter tires (M+S
radial tires) for operation under
inclement winter driving conditions.
While so-called all season tires (M+S
designation) provide better winter trac-
tion than summer tires with the load
ratings H, V, W, Y and ZR, they gener-
ally do not achieve the performance of
winter tires.
In the interests of sure tracking and safe
steering response, mount winter tires
which are made by the same manufac-
turer and which have the same tread
configuration at all four wheels.Comply with recommended speed
Never exceed the maximum
speed for which the winter tires
are rated.
Unprofessional attempts by laymen to
service tires can lead to damage and
accidents.
Have this work performed by skilled
professionals only. Any BMW center
has the required technical knowledge
and the proper equipment and will be
happy to assist you.<
Tire condition, tire pressureOnce the tire wears to below 0.16 in
(4 mm), winter tires display a percep-
tible decrease in their ability to cope
with winter driving conditions, and
should be replaced in the interest of
safety.
Comply with the specified tire inflation
pressures Ð and be sure to have the
wheel and tire assemblies balanced
every time you change the tires.BMW narrow-link snow chains are
intended for mounting in pairs at the
rear wheels only. Comply with all manu-
facturer's safety precautions when
mounting the chains. Do not exceed a
speed of 30 mph (50 km/h) while
driving with mounted snow chains.

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Engine oil To check oil level1. Park the vehicle on a level surface
2. Switch the engine off after it has
reached normal operating tempera-
ture
3. After approx. 5 minutes, pull the
dipstick out and wipe it off with a
clean lint-free cloth, paper towel, or
similar material
4. Push the dipstick carefully all the way
into the guide tube and pull it out
again
5. The oil level should be between the
two marks on the dipstick.
As with fuel economy, oil consumption
is directly influenced by your driving
style and vehicle operating conditions.367de738
The space between the two marks on
the dipstick corresponds to approx.
1.1 US quarts (1 liter). Do not fill beyond
the upper mark on the dipstick. Excess
oil will damage the engine.460de189
To add oilWhile you should wait until the level has
dropped to just above the lower mark
before adding oil, you should never
allow the oil level to fall below this
mark.
BMW engines are designed to
operate without oil additives; the
use of additives could lead to damage
in some cases. This also applies to the
manual and automatic transmission, the
differential and the power steering
system.< 367de344

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IndexDataTechnologyRepairsMaintenanceControlsOverview
The BMW Maintenance SystemService and Warranty Information
Booklet (US models)/Warranty
and Service Guide Booklet
(Canadian models)For detailed information on required
maintenance items and the work
involved, please refer to the Service
and Warranty Information Booklet (US
models) or to the Warranty and Service
Guide Booklet (Canadian models).
Depending upon operating conditions,
it may be advisable to have the body
checked for damage from rocks or
gravel as a precaution against rust.Have your BMW center perform
the maintenance and repair.
Your BMW center is always informed on
the latest maintenance work and repair
techniques and is equipped with the
required special tools. In addition,
checking parts known from experience
to be subject to wear is a permanent
part of the maintenance specifications.
Be sure that all maintenance work is
confirmed in the Service and Warranty
Information Booklet (US models) or the
Warranty and Service Guide Booklet
(Canadian models). These entries will
constitute your proof that the vehicle
has received regular maintenance. They
are also required for warranty claims.<

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IndexDataTechnologyRepairsMaintenanceControlsOverview
OBD interface socketAccess to the interface socket for the
Onboard Diagnostic system (OBD):
Lift off the side cover in the center
console on the passenger's side
(arrow).
The purpose of the OBD system is to
ensure proper operation of the emis-
sion control system throughout the
vehicle's lifetime by monitoring emis-
sion-related components and systems
for deterioration and malfunction.367us235
An illuminated indicator informs
you of the need for service,
but not of the need to stop the
vehicle. However, the systems should
be checked by your BMW center at the
earliest possible opportunity.
Under certain conditions, the indicator
will blink or flash. This indicates a rather
severe level of engine misfire. When
this occurs, you should reduce speed
and consult the nearest BMW center as
soon as possible. Severe engine misfire
over only a short period of time can
seriously damage emission control
components, especially the catalytic
converter.
"Service Engine Soon" warning
lamp for Canadian models.
When the filler cap is not properly
tightened, the OBD system can
detect the vapor leak and the indicator
will light up. If the filler cap is subse-
quently tightened, the indicator should
go out within a few days.<

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IndexDataTechnologyRepairsMaintenanceControlsOverview
Battery
Battery posts, terminals and
related accessories contain lead
and lead compounds. Wash hands after
handling.<
Battery locationThe battery is located in the luggage
compartment under the floor mat.
Z3 coupe:
Grasp the floor mat by the straps on the
left and right. Pull it upward and remove
it.
Z3 roadster:
Lift the floor mat from the rear by the
strap and fold it forward.367de335
Z3 d Z3
Battery careThe battery is completely maintenance-
free. That means that the original elec-
trolyte will normally last for the service
life of the battery under moderate
climatic conditions.SymbolsYou will find the following symbols on
your vehicle battery. To avoid injury,
please comply with the corresponding
precautions whenever you work with or
near the battery.
Please read the following infor-
mation before working with the
battery.
Wear eye protection. Do not
allow particles containing
battery acid or lead to come into
contact with your eyes, your skin, or
your clothing.
Battery acid is extremely corro-
sive. Wear eye protection and
protective gloves. Do not tip the
battery. Battery acid can leak from the
ventilation openings.
Ensure that children keep well
away from batteries and battery
acid.
Do not allow sparks or open
flame near the battery. Do not
smoke near the battery. Avoid
sparks from electrical cables or elec-
trical equipment. Turn the key to
position 0 in the ignition lock when the
battery is disconnected or connected.
Do not short circuit the battery termi-
nals. This creates a risk of personal
injury from high-voltage sparks.
A highly-explosive gas is gener-
ated when the battery is charged.
If acid is accidentally splashed
into your eyes, rinse them thor-
oughly for 15 minutes with clear
water. Following that, consult a physi-
cian immediately. If acid splashes onto
your skin or clothing, rinse immediately
with ample clean water. If acid is acci-
dentally swallowed, consult a physi-
cian immediately.
In order to protect the battery
case from ultraviolet radiation,
do not place it in direct sunlight.
A discharged battery can freeze. Store
the battery in areas where temperature
remains above freezing.

164n
For vehicles with automatic transmis-
sion, Adaptive Transmission Control
(ATC) performs the optimum gear selec-
tion based on a number of factors. This
system reacts to your individual driving
style and the current driving conditions.
The ATC recognizes your individual
driving style from the positions and
movements of the accelerator pedal,
delays during braking, and the vehicle's
lateral acceleration when cornering.
ATC makes the appropriate selection
from different shift characteristics
which range from comfort-oriented to
performance-oriented.
367us358
In order to take driving conditions into
account, ATC registers corners and
both uphill and downhill gradients. For
example, if you maintain speed through
a curve, the transmission does not
upshift.
On uphill gradients, it shifts only when
the engine speed increases in order to
make more efficient use of power
reserves. On downhill gradients ATC
downshifts when the speed of the vehi-
cles increases causing the driver to
step on the brakes.
Deceleration sensors continuously
monitor the physical forces acting upon
the vehicle. In the event of a severe
frontal impact, the gas generators of
the driver and passenger-side front
airbags are ignited simultaneously.
However, the passenger-side airbag is
only triggered if an additional sensor
has recognized that the passenger seat
is occupied.
If it is necessary during a side impact, a
side airbag will be triggered on the side
where the collision occurs.
390de012
ATC
*
Airbags

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IndexDataTechnologyRepairsMaintenanceControlsOverview
The airbags located under the marked
covers inflate and unfold in a matter of
a few milliseconds. In this process they
tear through the designed breaking
points of the upholstered covers or
press them out.
Because the inflation process must be
virtually instantaneous, it is necessarily
accompanied by a certain amount of
ignition and inflation noise. The gas
required to inflate the airbags is not
dangerous, and it dissipates together
with the associated smoke.
The entire process is completed within
fractions of a second.Precision sensors monitor the number of
revolutions of the wheels. When
equipped with DSC, they also monitor
steering angle, lateral acceleration,
brake pressure and the movement of the
vehicle around its vertical axis.
If differences in the wheel speeds occur,
ASC+T recognizes the danger of wheel-
spin and reduces the drive torque. If
necessary, the system also responds
with additional applications of the brakes
at the rear wheels.
In addition, DSC permanently monitors
the vehicle's current operating condition
and compares it with an ideal condition
that is calculated from the sensor's
signals. If deviations from this occur
(understeering or oversteering, for
instance), DSC can stabilize the vehicle
in fractions of a second by adjusting
engine output and with the assistance of
braking intervention at individual wheels.
Within physically possible limits
dangerous skids can be prevented even
as they are just beginning.You may need some time to become
accustomed to this system's interven-
tion. However, it provides optimum
propulsive force and driving stability.
The braking intervention may be accom-
panied by a certain degree of noise.Airbags ASC+T/DSC
*

Everything from A to ZAABS (Antilock Brake
System)101
Accessories6
Adaptive Transmission
Control (ATC)62, 164
ADB (Automatic Differential
Braking)74
Adding
brake fluid126t
engine coolant126t
engine oil123t
washer fluid122t
Additional storage areas90
Adjusting
backrest50
mirrors50, 51
seat49
washer nozzles122t
Air conditioner84
Air distribution82, 86
Air outlets80, 84
ventilation85
Air supply82, 86
Air vents80, 84
Airbags21, 54, 164
important safety
notices130
sitting correctly55Antenna107
Antifreeze126
Antifreeze protection,
radiator105, 125
Antilock Brake System
(ABS)101
Anti-theft system32
Approved gross vehicle
weight172
Approved wheel and tire
specifications116
Aquaplaning99, 111
ASC+T (Automatic Stability
Control plus
Traction)73, 165
Ashtray91
ATC (Adaptive Transmission
Control)62, 164
Automatic cruise control67
Automatic Differential
Braking (ADB)74
Automatic rear window
washer65
Automatic Stability Control
plus Traction
(ASC+T)73, 165
Automatic transmission with
Steptronic62
gear indicator68Automatic windshield
washer122
Average fuel
consumption72
Average speed72
BBackrest, adjusting50
Backup lamps61
bulb replace-
ment139t, 140t
Battery153, 174
capacity174
charge condition154
charging154
discharged158
disposal154t
removal and
installation155
Battery change, keys143
Battery charge indicator
lamp20
Battery safety terminal155
Beverage holder91
BMW High Performance
Synthetic Oil124
Brake fluid126
disposal127tBrake hydraulic system20
Brake lamps, bulb replace-
ment139t, 140t
Brake pads22, 104
Brake system103, 104
brake fluid126
fluid level104
winter road
conditions105
Brakes, malfunctions104
Break-in procedure98
Bulb replacement137t
CCalifornia Proposition
65 Warning132
Capacities173
Car jack146t
Car keys30
Car radio
reception107, 166
refer also to the separate
Owner's Manual
Car wash systems, refer to
the "Caring for your
vehicle" manual
From A to Z

Everything from A to Z
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IndexDataTechnologyRepairsMaintenanceControlsOverview
Care of paintwork, refer to
the "Caring for your
vehicle" manual
Care of upholstery materials,
refer to the "Caring for your
vehicle" manual
Cargo loading94
Caring for the vehicle finish,
refer to the "Caring for your
vehicle" manual
Catalytic converter100
CBC (Cornering Brake
Control)102
Cellular phone107
refer also to the separate
Owner's Manual
Center (high-mount) brake
lamp141
Central locking system32
Changing a wheel146t
Charge condition of the
battery154t
Charging the battery154t
Chassis number127
Checking oil level123t
Checking tire
pressure26t, 110
Child seat56
Child-restraint device56Child-restraint system56
installation57
Z3 coupe with tether
strap57
Cigarette lighter92
Cleaning the headlamps66
Cleaning the rear
window66
Cleaning the windshield65
Clock70
Cockpit16
Coin box91
Cold start59
Compartments90
Computer70
refer also to the "Owner's
Manual for Onboard
Computer"
Connecting a car vacuum
cleaner92
Controls, cockpit16
Convertible top
electrical
malfunction157t
manual operation157t
operation40, 44
weather protection44
Coolant105, 126Coolant temperature69
Coolant, antifreeze
protection105
Copyright4
Cornering Brake Control
(CBC)102
Cover, convertible
top41, 46
Cruise control67
Cruising range72
Cup holder, refer to
beverage holder91
Curb weight172
DDashboard16
Data link connector for
Onboard Diagnostics133
Daytime driving lamps76
DBC (Dynamic Brake
Control)103
Deep water99
Defrost windows and
remove
condensation83, 88
Defrosting
rear window66
mirrors51Difficult steering106t
Digital clock70
Dimensions171
Dipstick, engine oil123
Disc brakes103
Displacement170
Display lighting76
Displays18
Disposal
batteries154t
brake fluid127t
coolant125t
engine oil125t
Door key30
Doors
electrical
malfunction32t
manual operation32t
operating with the remote
control33
unlocking and locking32
DOT Quality Grades,
tires111
Drive belts174
Driving notes99
Driving through water99