ABS BMW Z3 2002 Owners Manual

11n

Controls and features
Operation, maintenance

Cabin convenience:

Glove compartment90
Storage compartments90
Storage boxes90
Beverage holder91
Ashtray91
Cigarette lighter92

Loading and transporting:

coupe:
Roll-up cover93
Partition net93
Cargo loading94
Roof-mounted luggage
rack95

Special operating instructions:

Break-in procedure98
Driving notes99
Catalytic converter100
Antilock Brake System
(ABS)101
Disc brakes103
Brake system104
Winter operation105
Power steering106
Cellular phone107
Car radio reception107
Hardtop Ð roadster108

Wheels and tires:

Notes on inflation pressures110
Tire condition110
Tire replacement111
Tire rotation113
Wheel and tire
combinations114
Special features of winter
tires115
Snow chains115
Approved wheel and tire
specifications116

In the engine compartment:

Hood118
Engine compartment120
Fluids for the washer
systems122
Washer nozzles122
Engine oil123
Coolant125
Brake fluid126
Vehicle Identification127

Care and maintenance:

The BMW Maintenance
System128
Airbags130
Storing your vehicle130

Laws and regulations:

Technical modifications132
California Proposition
65 Warning132
OBD interface socket133

19n

IndexDataTechnologyRepairsMaintenanceControlsOverview

Instrument cluster

1 Fuel gauge with indicator lamp
for reserve range68
2 Indicator lamp for turn signals23
3 Speedometer
4 Indicator and warning lamps for:

>

Battery charge current20

>

High beams23

>

Engine oil pressure20
5 Tachometer68
6 Coolant temperature gauge69
7 Indicator and warning lamps for:

>

Brake pad wear22

>

Brake hydraulic
system20, 21, 22

>

Parking brake21

>

Airbags21
8 Indicator and warning lamps for:

>

Service Engine Soon22

>

Automatic transmission

*
22

>

Safety belts21

>

Engine oil level21

>

Antilock Brake System (ABS)21
9 Indicator lamp for Automatic
Stability Control plus Traction
(ASC+T)/Dynamic Stability Control
(DSC

*
)22
10 Trip odometer/Gear indicator for
automatic transmission with
Steptronic

*
6811 Service Interval Display69, 128
12 Odometer68
13 Indicator and warning lamps for:

>

Front fog lamps

*
23

>

Engine electronics22
14 Trip odometer reset button68
The illustration shows the instrument
cluster in the US version. In the Cana-
dian models, some of the indicator and
warning lamps have a different appear-
ance, refer to pages 20 to 23.

21n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Indicator and warning lamps

Red and yellow: continue to drive
cautiously

The red warning lamp for the
brake hydraulic system comes
on together with the yellow indi-
cator lamps for ABS, ASC+T/
DSC

*
:
The entire ABS, CBC, ASC+T/
DSC

*
and


ADB/DBC


control
system has failed. Continue
driving cautiously and defen-
sively. Avoid hard brake applications.
Have the system checked by your BMW
center as soon as possible.
For additional information, refer to
pages 73, 74 and 102.
Warning lamps for Canadian
models.

Red: an important reminder

Parking brake
Comes on when the parking
brake is engaged.
For additional information, refer to
page 60.
Parking brake warning lamp for
Canadian models.
Please fasten your safety belt

l

Together with an acoustic signal.
Comes on until the safety belts
are fastened.
For additional information on safety
belts, refer to page 52.
Airbags

l

Please have the system
inspected by your BMW center.
For additional information, refer to
pages 54 and 164.

Yellow: check as soon as possible

Antilock Brake System (ABS)

l

Comes on during normal vehicle
operation: ABS has been deac-
tivated in response to system malfunc-
tion. Conventional braking efficiency
is available without limitations. Please
have the system inspected by your
BMW center.
For additional information, refer to
page 101.
Antilock Brake System warning
lamp for Canadian models.
Engine oil level
Comes on while driving: the
oil level is at the absolute
minimum; refill as soon as possible. Do
not drive more than approx. 30 miles
(50 km) until you do.
For additional information, refer to
page 123.
Engine oil level
Comes on after the engine has
been switched off: add engine
oil at your earliest opportunity (when
you stop to refuel).
For additional information, refer to
page 123.

37n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Luggage compartment lidTo lock separatelyTurn the master key to the right past the
pressure point and then pull it out in the
horizontal position
This locks the luggage compartment
and disengages it from the central
locking system. If you then surrender
only the door and ignition key (refer to
page 30), access to the vehicle through
the luggage compartment is not
possible. This is recommended for valet
parking, for instance.Manual operation(in the event of electrical malfunction)
Turn the master key in the lock of the
luggage compartment lid to the left to
the stop Ð the luggage compartment lid
opens slightly.
The luggage compartment is locked
again as soon as it is closed.
To closeThe illustration depicts the luggage
compartment lid of the Z3 coupe.
The handle recess in the interior trim
panel of the luggage compartment lid
(arrow) makes it easier to pull the lid
down.
On the Z3 roadster, the handle recess
is located to the left of the lock mecha-
nism.
To avoid injuries, be sure that the
travel path of the luggage
compartment lid is clear when it is
closed, as with all closing procedures.< 367de625
Z3 cou
pe
Operate the vehicle only when the
luggage compartment lid is
closed, since exhaust fumes could
penetrate the interior of the vehicle.
Should it be absolutely necessary to
operate the vehicle with the luggage
compartment lid open (coupe; roadster
with closed convertible top):
>Close all windows. On the coupe,
close the sunroof
>Increase the air supply of the heating
and ventilation system to a high level.
Refer to page 82 or 86.<

Overview
Controls and features
Operation, maintenance
Owner service procedures
Technical data
Index Advanced technology
97n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Special operating instructions:
Break-in procedure98
Driving notes99
Catalytic converter100
Antilock Brake System
(ABS)101
Disc brakes103
Brake system104
Winter operation105
Power steering106
Cellular phone107
Car radio reception107
Hardtop Ð roadster108
Wheels and tires:
Notes on inflation pressures110
Tire condition110
Tire replacement111
Tire rotation113
Wheel and tire
combinations114
Special features of winter
tires115
Snow chains115
Approved wheel and tire
specifications116In the engine compartment:
Hood118
Engine compartment120
Fluids for the washer
systems122
Washer nozzles122
Engine oil123
Coolant125
Brake fluid126
Vehicle Identification127
Care and maintenance:
The BMW Maintenance
System128
Airbags130
Storing your vehicle130
Laws and regulations:
Technical modifications132
California Proposition
65 Warning132
OBD interface socket133
Maintenance

101n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Antilock Brake System (ABS)The conceptThe Antilock Brake System (ABS) keeps
the wheels from locking during braking,
thereby enhancing active driving safety.
The reason: locked wheels are
dangerous. When the front wheels
slide, the driver loses steering control
over the vehicle. Traction loss at the
rear wheels can cause the rear end to
break into an uncontrolled skid.
The system can achieve the shortest
braking distances possible under most
conditions (on straight-aways or in
curves, on the various road surfaces).
ABS is designed to meet two essential
requirements during every brake appli-
cation:
>To help provide vehicle stability
>Assured ability to steer and maneuver
on the various road surfaces (asphalt,
concrete, dirt, wet conditions, snow
and ice).
Braking with ABSThe system is operative once the
vehicle exceeds a speed of approx.
6 mph (10 km/h). It is inactive once
again below approx. 4 mph (6 km/h).
Therefore, the wheels could theoreti-
cally tend to lock in the final phase of a
braking action, but this is insignificant in
actual practice.
If you are in a situation which requires
full braking, you will exploit the full
benefits of the ABS system if you apply
maximum brake pressure ("panic stop").
Since the vehicle maintains steering
responsiveness, you can avoid possible
obstacles with a minimum of steering
effort, despite the full brake application.The ABS closed-loop control circuit
cycles in fractions of a second. The
pulsation at the brake pedal, together
with sounds generated by the hydraulic
control system, indicate to you that the
vehicle is approaching its maximum
braking range. It is a reminder to you
that you must adapt the vehicle's road
speed to existing road conditions.
On road surfaces that have a loose
surface layer on a firm base with good
traction (on gravel, deep sand or snow,
for example), braking distances may be
longer than with locked wheels. This
also applies for driving with snow
chains. However, ABS continues to
provide enhanced vehicle stability and
steering response under these condi-
tions.

102n
Antilock Brake System (ABS)Information for your safetyNot even ABS can suspend the laws
of physics. ABS alone cannot prevent
accidents if the brakes are applied
without an adequate, safe distance
between vehicles or if the speed limit
has been exceeded. Nor can it prevent
the hazards of aquaplaning. Responsi-
bility for these types of situations
remains in the hands (and at the feet) of
the driver. You should never allow the
added safety of ABS to lull you into a
false sense of security, or mislead you
into taking increased risks that could
affect your own safety and that of
others.
Do not make any modifications to
the ABS system.
Service procedures on ABS are to be
performed by authorized technicians
only.< Antilock Brake System (ABS)/
Cornering Brake Control (CBC)CBC is an advanced engineering
design of the ABS. When braking while
cornering at high speed or braking
during high lateral acceleration, or
when braking during a lane change,
vehicle stability is improved and
steering response is enhanced.
In the event of a fault
The ABS warning lamp comes
on, refer to page 21. The brake
system then reverts to conven-
tional operation as on vehicles
without ABS. However, have the
brake system checked by your
BMW center as soon as possible. To
prevent undetected defects and cumu-
lative faults from adversely affecting the
brake system, refer any problems to
your BMW center at the earliest oppor-
tunity.
The red warning lamp for the
brake hydraulic system comes
on together with the yellow indi-
cator lamps for ABS, ASC+T/
DSC
and ADB/DBC
(refer to
page 21), the entire ABS, CBC,
ASC+T/DSC and ADB/DBC
control system has failed.
Continue to drive cautiously and
defensively. Avoid full brake applica-
tions because the vehicle could
become unstable and go out of control.
Have the system checked by your BMW
center as soon as possible.
Warning lamps for Canadian
models.

103n
IndexDataTechnologyRepairsMaintenanceControlsOverview
ABS Disc brakesDynamic Brake Control (DBC)*DBC is included in the DSC, refer to
information beginning on page 74.
If you step on the brake rapidly, this
system automatically produces
maximum braking force boost and thus
helps to achieve the shortest possible
braking distance during "panic stops".
All of the benefits of the ABS system
are exploited under these circum-
stances.
Do not reduce the pressure on the
brake pedal for the duration of the
brake application. When the brake
pedal is released, the DBC is deacti-
vated.
In the event of a malfunction,
the brake warning lamp lights up
yellow. Normal braking effi-
ciency is still fully available.
Have the system checked and
repaired at your BMW center as
soon as possible.
Please observe the section "Infor-
mation for your safety" concerning
the ABS system, which also applies to
the DSC system.<
Disc 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, or 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 which
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 which even extended
application will fail to cure.
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 in the event of their use.<
Driving notesWhile driving in wet conditions and in
heavy rain, it is advisable to apply light
pressure to the brake pedal every few
miles Ð watch traffic conditions to
ensure that this maneuver does not
endanger other road users. The heat
generated in this process helps dry the
pads and rotors.
Maximum braking force is obtained
while the wheels continue to rotate,
peaking when the wheels remain on the
verge of locking without actually doing
so. ABS maintains this state automati-
cally. If the ABS fails, you should revert
to the staggered braking technique
described on page 106.
Extended or steep mountain descents
should be driven in the gear in which
only minimal periodic brake application
is required. This avoids excessive strain
on the brakes and possible
impairment of the braking effect.
You can increase the engine's braking
effect by selecting progressively lower
gears, downshifting into first gear, if
necessary. You can also downshift into
first gear if you are using the manual
mode in a vehicle with automatic trans-
mission, refer to page 63.

105n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Winter operationThe 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 contains the
year-round 50 : 50 ratio of water and
antifreeze with corrosion inhibitor. This
mixture provides protection against
freezing down to approx. Ð 34 7
(Ð 37 6). Replace the coolant every
three years.LocksBMW door lock deicer can be used to
free the doors if they are frozen. This
deicer also contains lubricant.
After using deicer, treatment with BMW
lock cylinder grease is recommended.
Rubber seals and components In order to prevent freezing, apply BMW
rubber treatment to weather-stripping
on the doors, hood, luggage compart-
ment and to convertible top seals.
A full range of car-care products is
available from your BMW center.< Snow chainsBMW snow chains
* can be mounted on
both summer and winter tires. Mount
them in pairs on the rear wheels only.
Comply with the manufacturer's safety
precautions. Do not exceed a speed
limit of 30 mph (50 km/h) when driving
with chains. As an exception in this
situation, we recommend that you
switch off the ASC+T/DSC
* system
when snow chains are mounted. Refer
to pages 73, 74.
Starting offWhen starting from a full stop or
"rocking" free in deep snow, we recom-
mend that you switch off the ASC+T/
DSC
* system, refer to pages 73, 74.
Driving on low-traction road
surfacesUse smooth, gentle pressure to control
the accelerator pedal. Avoid excessive
engine speeds and shift to the next
higher gear at an early point. Shift down
into the next lowest gear when
approaching uphill or downhill grades.
Maintain an adequate distance between
yourself and the vehicle ahead.Brakes Winter road conditions substantially
reduce the traction available between
the tires and the road surface.
Remember that Ð in every situation Ð
braking distances will be significantly
longer as a result of this.
ABS is intended to prevent the wheels
from locking during brake applications,
thus helping to maintain vehicle stability
and steering response.

106n
Winter operation Power steeringIf it should occur that the ABS does not
respond in a critical braking situation
and the wheels lock: reduce the pres-
sure on the brake pedal until the wheels
just start to roll again while still main-
taining enough force to continue
braking. Following that, increase pedal
pressure again. Reduce the pressure as
the wheels lock, then reapply pressure.
Repeat this process.
This type of staggered braking will
shorten the braking distance, and the
vehicle still remains responsive to
steering.
You can still attempt to steer around
hazards once you have reduced the
pressure on the brake pedal.
Do not shift down on slick road
surfaces. Doing so could cause
the rear wheels to lose traction and
skid, which could result in the loss of
vehicle control.<
Declutch during hard braking on
road surfaces which provide only
poor or uneven traction.<
Skid controlDepress the clutch and release the
accelerator pedal, or place the selector
lever of the automatic transmission into
the "Neutral" position. Countersteer
carefully and attempt to regain control
of the vehicle.ParkingEngage 1st or reverse gear. If your
vehicle is equipped with an automatic
transmission, place the selector lever in
"Park". On vehicles with manual trans-
mission, also apply the parking brake
when parking on inclined surfaces. In
order to prevent the parking brake
linings from locking due to frost or
corrosion, dry them by gently applying
the parking brake as the vehicle is
coming to a stop. Make sure that
following traffic is not endangered.
The brake lamps do not light
up when the parking brake is
applied.<
If you notice a change in steering
response (high steering effort, for
example):
Consult a BMW center to have the
system checked.
If the power steering fails,
increased effort will be required
to steer the vehicle.<