engine coolant BMW Z3 2002 Owners Manual

Contents

Overview
Controls and features

Cockpit16
Instrument cluster18
Indicator and warning lamps20
Hazard warning flashers24
Warning triangle24
First-aid kit24
Refueling25
Fuel specifications26
Tire inflation pressure26

Opening and closing:

Keys30
Electronic vehicle
immobilizer31
Central locking system32
Opening and closing from the
outside32
With the key32
With the remote control33
Opening and closing from the
inside36
Luggage compartment lid36
Electric power windows38
Sunroof, coupe39
Convertible top40

Adjustments:

Seats49
Mirrors50

Safety systems:

Safety belts52
Airbags54
Transporting children safely56

Driving:

Ignition lock58
Starting the engine59
Switching off the engine60
Parking brake60
Manual transmission61
Automatic transmission with
Steptronic62Turn signals/High beams64
Washer/Wiper system65
Rear window defroster66
Cruise Control67

Everything under control:

Odometer68
Tachometer68
Fuel gauge68
Coolant temperature gauge69
Service Interval Display69
Clock70
Computer70

Technology for safety and
convenience:

Automatic Stability Control
plus Traction (ASC+T)73
Dynamic Stability Control
(DSC)74

Lamps:

Parking lamps/Low beams76
Fog lamps76
Interior lamps77
Reading lamps78

Controlling the climate
for pleasant driving:

Heating and ventilation80
Heating and ventilation/
Air conditioner84
Seat heating89

Contents

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.

69n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Coolant temperature gauge Service Interval DisplayBlueThe engine is still cold. Drive at
moderate engine and vehicle speeds.RedWhen you switch on the ignition, the
warning lamp comes on briefly to
confirm that the system is operational.
Comes on while driving: the engine is
overheated. Switch off the engine
immediately and allow it to cool down.367de007
Between the blue and red zonesNormal operating range. It is not
unusual for the needle to rise as far as
the edge of the red zone in response to
high outside temperatures or severe
operating conditions.
Checking coolant level, refer to
page 125.
Green lamps The number of illuminated lamps
decreases as the time for your next
maintenance visit approaches.Yellow lamp This field appears together with
OILSERVICE or INSPECTION.
This alerts you that maintenance is due.
Please arrange for an appointment with
your BMW center.Red lamp Maintenance is overdue.367us709

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

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.

121n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Engine compartment Ð Z3 roadster 2.5i, 3.0i, Z3 coupe 3.0i1 Engine oil dipstick123
2 Brake fluid reservoir,
the illustration shows the reservoir for
Z3 roadster 3.0i, Z3 coupe 3.0i126
3 Fuse box156
4 Coolant expansion tank125
5 Engine oil filler neck123
6 Reservoir for windshield and
headlamp
* washer fluid122
7 Auxiliary terminal for jump-starting Ð
negative terminal158
8 Auxiliary terminal for jump-starting Ð
positive terminal158

125n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Engine oil Coolant
Comply with the applicable envi-
ronmental laws regulating the
disposal of used oil.<
Recommendation: have the oil changed
by your BMW center only.
Continuous exposure to used oil
has caused cancer in laboratory
testing. Any skin areas that come in
contact with oil should thus be thor-
oughly washed with soap and water.
Store oil, grease, etc., out of reach of
children. Comply with warning labels
and information on containers.
If you use SAE 15W-40 engine oil in low
temperatures (below +14 7/Ð10 6),
the engine may become difficult to
start.
Special engine oils individually
approved by BMW are preferred for use
in your engine. Please contact your
BMW center for details.<
Do not add coolant to the cooling
system when the engine is hot. If
you do, escaping coolant can cause
burns.
To avoid the possibility of damage later
on, do not use anything other than
factory-approved, nitrite and amino-
free extended-duty antifreeze with
corrosion inhibitor which can be used
with aluminum radiator cores. Your
BMW center is familiar with the
approved specifications.
Antifreeze and anti-corrosion agents
are hazardous to health. Store them in
their original containers. Keep the
containers tightly closed and out of
reach of children.
Extended-duty antifreeze with corro-
sion inhibitor contains the flammable
substance ethylene glycol. For this
reason, do not spill extended-duty anti-
freeze with corrosion inhibitor on hot
engine components. If you do, it could
be ignited and cause burns.<
Comply with the applicable envi-
ronmental laws regulating the
disposal of extended-duty antifreeze
with corrosion inhibitor.<
Checking coolant levelCorrect coolant level when the engine
is cold (approx. +68 7/+20 6):
Unscrew the cap from the expansion
tank.
The coolant level is correct when the
upper end of the red float is at least
even with the upper edge of the filler
neck (refer to the arrow in the illustra-
tion), but no more than 0.8 in (2 cm)
above it Ð that is, up to the second mark
on the float (refer also to the schematic
diagram next to the filler neck).367de356

126n
Coolant Brake fluid To add coolantWait until the engine cools before
removing the cap from the expansion
tank. The needle of the coolant gauge
in the instrument cluster must be
located in the blue field; otherwise,
there is a danger of scalding.
1. Turn the cap slightly counterclock-
wise in order to allow accumulated
pressure to escape, then open
2. If the coolant is low, slowly add
coolant until the correct level is
reached Ð do not overfill.
The coolant is a mixture of water and
extended-duty antifreeze with corrosion
inhibitor. Always maintain the
prescribed all-season 50 : 50 mixture
ratio for year-round protection against
internal corrosion. No other additives
are required.
Replace the coolant regularly. Refer to
the Service and Warranty Information
Booklet (US models) or the Warranty
and Service Guide Booklet (Canadian
models).If the warning lamp for the brake
hydraulic system comes on:
The brake fluid level is too low, refer
also to the instructions on page 104.
For adding brake fluid or for deter-
mining and correcting the cause of
brake fluid loss, consult your BMW
center. Your BMW center is familiar
with the specifications for factory-
approved brake fluids (DOT 4).
367de741
Z3 roadster 2.5i
Brake fluid loss may result in extended
brake pedal travel. If this occurs, refer
to the notes on page 104.
Brake fluid is hygroscopic, that is,
it absorbs moisture from the air
over time.
In order to ensure the operating safety
and reliability of the brake system, have
the brake fluid changed every two years
by a BMW center, refer also to the
Service and Warranty Information
Booklet (US models) or the Warranty
and Service Guide Booklet (Canadian
models).367de740
Z3 roadster 3.0i, Z3 coupe 3.0i

130n
Airbags Storing your vehicle1 Front airbags on the driver and
passenger side
2 Side airbags on the driver and
passenger sideImportant safety notices
Do not attempt to remove the gas
generators of the airbag restraint
system from the vehicle or to disas-
semble them.
Have inspection and service proce-
dures performed by specially-trained
personnel only.
If the airbag restraint system malfunc-
tions, is deactivated or triggered as a
response to an accident, have the
system repaired by a BMW center only.
367de730
Do not make modifications of any kind
to the individual components or system
wiring. These include the upholstered
covers on the steering wheel hub, in the
instrument panel and in the side trim
panels of the doors. Never apply adhe-
sive materials to these components or
cover or modify them in any way. Do
not attempt to disassemble the steering
wheel itself.
To ensure compliance with applicable
safety regulations, have the airbag
generators disposed of by a BMW
center only.
Unprofessional attempts to service the
system could lead to failure in an emer-
gency or undesired airbag activation,
either of which could result in personal
injury.< If you intend to store the vehicle
for longer than three months, have
the maintenance operations described
on this page performed.<
Preparation for storageHave the following operations
performed by your BMW center:
1. Clean and apply a rust-proofing
agent or other treatment to the
engine, engine compartment, under-
carriage, axles and major compo-
nents in accordance with approved
repair procedures. Wash the vehicle,
clean the interior and treat painted
and chromed parts. Clean the rubber
seals around the hood, luggage
compartment and doors
2. Change the engine oil and oil filter
with the engine at operating temper-
ature. As an additional corrosion
protection measure, an anticorrosive
agent can be added to the engine in
accordance with the manufacturer's
instructions
3. Check the coolant level and concen-
tration and top up if necessary
4. Check the fluid level of the wind-
shield washer fluid reservoir; top up if
necessary