display BMW Z4 ROADSTER 2.5I 2004 E85 User Guide

Reference
At a glance
Controls
Driving tips
Mobility
51
Average fuel consumption
If you continue to press the button on the
turn signal lever, the average fuel con-
sumption last displayed is recalculated
from that point in time.
Any time spent when the vehicle is station-
ary and the engine shut off is ignored in the
calculation.
Cruising range
The computer bases its calculations of the
cruising range on the preceding driving
style and on the remaining fuel in the tank.
It is important that you refuel when
the cruising range falls below approx.
30 miles/50 km. Otherwise, the engine
cannot be guaranteed to operate properly
and damage may result.<
Average speed
If you continue to press the button on the
turn signal lever, the average fuel con-
sumption last displayed is recalculated
from that point in time.

Reference
At a glance
Controls
Driving tips
Mobility
53
If the brake warning lamp comes on
together with the yellow indicator
lamps for the Antilock Brake Sys-
tem ABS and the Dynamic Stability
Control DSC:
The entire ABS and DSC control
system has failed. Continue driving
cautiously and defensively. Avoid
hard brake applications. Please have the
system checked by your BMW center as
soon as possible.
Indicator and warning lamps for
Antilock Brake System ABS and
Dynamic Stability Control DSC for
Canadian models.
Switching off DSC/Activating DTC
Press the DSC button briefly. The DTC indi-
cator lamp comes on and stays on.
DSC has been switched off; DTC is in ready
mode.
In the following exceptional circumstances,
it may be effective to activate the DTC for a
short period:
>When rocking the vehicle or starting off
in deep snow or on loose surfaces
>When driving on snow-covered grades,
in deep snow, or on a snow-covered
surface that has been packed down
from being driven on
>When driving with snow chains.
The gain in traction is achieved by a reduc-
tion in stabilizing intervention.
Switching off DSC and DTC
Hold the DSC switch down for at least
3 seconds. The DSC indicator lamp stays
lit.
In this case, no interventions to increase
stability and traction for the engine and
brakes are carried out.
To maintain vehicle stability, drive
with the DSC switched on whenever
possible.<
Reactivating DSC and DTC
Press the button again.
The indicator lamp goes out.
The laws of physics cannot be
repealed with DSC. It will always be
the driver's responsibility to drive in a man-
ner that matches road conditions. We
therefore urge you to avoid using the addi-
tional safety margin of the system as an
excuse for taking risks. Stabilizing interven-
tion is only performed to a limited degree
when the DTC is activated.
Do not make any modifications to the DSC
system. Allow only authorized technicians
to perform service procedures on the
DSC.<
Dynamic Brake Control DBC
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 applica-
tion. When the brake pedal is released, the
DBC is deactivated.
Brake force display
The Brake force display indicates to the
road user behind you how hard you are
braking.

Technology for safety and driving convenience
54 The display has two levels:
>Normal braking:
Brake lamp 1 lights up on both sides of
the vehicle together with the center
brake lamp
>Forceful braking and braking with ABS:
Brake lamps 1 and 2 light up on both
vehicle sides together with the center
brake lamp.
Antilock Brake System ABS
The concept
ABS keeps the wheels from locking during
braking, thereby enhancing active driving
safety.
Malfunctions
If the yellow indicator lamp for the
Antilock Brake System ABS comes
on together with the brake warning
lamp and the indicator lamp for the
Dynamic Stability Control DSC:
The entire ABS and DSC control
system has failed. Continue driving
cautiously and defensively. Avoid
hard brake applications. Please have the
system checked by your BMW center as
soon as possible.
Indicator lamp for the Antilock
Brake System ABS with the brake
warning lamp and the indicator
lamp for the Dynamic Stability Con-
trol DSC for Canadian models.
Braking with ABS
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.
Pulsation at the brake pedal combines with
sounds from the hydraulic circuits to indi-
cate to the driver that ABS is in its active
mode.
Flat Tire Monitor
The concept
As you drive, the Flat Tire Monitor keeps
track of pressure levels in all four tires. The
system alerts you whenever the inflation
pressure of a tire falls significantly below
the pressure of another tire.
The system actually detects pressure loss
by monitoring differences in the relative
speeds of the four wheels. It interprets vari-
ations outside specified limits as severe
pressure loss, and then responds by gen-
erating a warning.
System requirements
In order for the Flat Tire Monitor to learn the
correct tire inflation pressure, please do the
following:
1.Check the tire inflation pressures in all
tires
2.Compare to the inflation pressure table,
refer to page 76, and correct if neces-
sary
3.Initialize the system.
If the system is not initialized,
undetected losses in pressure or
false warnings that indicate a non-exis-
tent flat tire are possible.<
System limitations
The Flat Tire Monitor cannot provide
you with advance warning of sudden
and severe tire damage caused by external
factors and does not detect the balanced
and very gradual pressure loss that takes

Controlling the climate for pleasant driving
62
Tips for pleasant driving
Use the automatic system – switch on with
AUTO button 6. Select the desired interior
temperature.
Detailed setting options are described for
you below.
Automatic air distribution and supply
The AUTO program assumes the
adjustment of the air distribution
and air supply for you and in addi-
tion adapts the temperature to
external influences, summer or winter, to
meet preferences you can specify.
In the AUTO program, the air conditioning
mode is also turned on at the same time.
The AUTO program functions only to
a limited extent when the convertible
top is open.<
Individual air distribution
You yourself can direct airflow
onto the windows , toward the
upper body and into the foot-
well . The arrow lights up. The
automatic air supply remains unchanged.
All intermediate settings are possible. By
pressing the AUTO button, you can reacti-
vate the air distribution.
Temperature
The interior temperature that
appears on the display panel is a
general figure intended for refer-
ence purposes. When you start
the vehicle, the system ensures that the
selected temperature is reached as quickly
as possible, regardless of the season. It
then maintains this temperature.
Air supply/blower
You can set the blower through
an infinitely variable range of
speeds. This shuts off the auto-
matic air supply. The arrow lights
up. The automatic air distribution remains
unchanged. You can reactivate the auto-
matic air supply by pressing the AUTO but-
ton.When you turn the rotary control toward
zero: the blower, heating and air condi-
tioner are switched off, and the air supply is
stopped. You can reactivate the system by
turning the control toward the right again.
To defrost windows and remove
condensation
This program quickly removes ice
and condensation from the wind-
shield and the side windows.
Maximum cooling
Above an outside temperature of
417/+56 and with the engine
running, you achieve a maximum
cooling effect as quickly as possi-
ble. At the same time, the air conditioning is
turned on.
The temperature is set to the lowest possi-
ble value. The system switches into the
recirculated air mode and air flows at max-
imum blower speed from the air outlets
only. Therefore, the air outlets must always
be open when you select this program.
Air conditioning
The air is cooled and dehumidi-
fied and, depending on the tem-
perature setting, rewarmed.
Depending on the weather, the
windshield may fog over briefly when the
engine is started.
The air conditioning system is automati-
cally switched on when you use the AUTO
program.
Condensation forms during operation
of the air conditioning system, which
then exits under the vehicle. Traces of con-
densed water on the ground underneath
the vehicle are thus normal.<

Wheels and tires
78
Temperature
The temperature grades are A, the highest,
B and C, representing the tire’s resistance
to the generation of heat and its ability to
dissipate heat when tested under con-
trolled conditions on a specified indoor lab-
oratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudden tire failure. The grade C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A repre-
sent higher levels of performance on the
laboratory test wheel than the minimum
required by law.
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, under-inflation, or excessive load-
ing, either separately or in combination,
can cause heat buildup and possible tire
failure.<
RSC: Run Flat tires
Run Flat tires are labeled on the sidewall
with a circular symbol containing the letters
RSC. Refer to page 80.
M+S
Winter and all-season tires.
These have better winter performance
properties than summer tires.
Tire condition
Inspect your tires frequently for tread wear,
signs of damage and for foreign objects
lodged in the tread. Check the tread depth.
Tire tread
Tread depth should not be allowed to go
below 1/8 in/3 mm even though in Europe,
for example, the legally specified minimum
tread depth is only 1/16 in/1.6 mm. Below
1/8 in/3 mm tread depth, there is a very
high risk of hydroplaning, even at relatively moderate speeds and with only small
amounts of water on the road.
At tread depths below approx. 1/6 in/
4 mm, winter tires display a perceptible
decrease in their ability to cope with winter
driving conditions, and should be replaced
in the interest of safety.
Tread wear indicators in the tread-groove
base, see arrow, are distributed around the
wheel circumference and are labeled on
the tire sidewall as TWI, Tread Wear Indica-
tor. At a tread depth of 1/16 in/1.6 mm, the
indicators signal that the legally permissi-
ble wear limit has been reached.
Tire damage
Unusual vibrations encountered dur-
ing normal vehicle operation can indi-
cate tire failure or some other vehicle mal-
function. This type of problem can be
caused by contact with curbs, etc. This is
also true for irregularities in the vehicle's
handling characteristics, such as a pro-
nounced 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 there to
have it and its wheels or tires inspected.
Tire damage up to and including sudden
and complete air loss can pose an extreme
hazard for both vehicle occupants and
other road users.<

Maintenance
86
Maintenance
The BMW Maintenance
System
The BMW Maintenance System has been
designed as a reliable means of providing
maximum driving and operating safety, and
as cost-effectively for you as possible.
Please keep in mind that regular mainte-
nance is not only necessary for the safety
of your vehicle, but also plays a significant
role in maintaining the resale value of your
vehicle.
Service interval display
While conventional systems rely on dis-
tance traveled alone to determine when a
service is due, the BMW Maintenance Sys-
tem has taken the actual conditions under
which the vehicle is operated into consid-
eration for years, because miles can be
traveled in many different ways:
From a maintenance point of view,
60,000 miles/100,000 km accumulated in
short-distance urban driving are not the
same as 60,000 miles/100,000 km accu-
mulated at moderate cruising speeds in
long-distance highway travel.
The BMW Maintenance System includes
the Engine Oil Service and Inspections I
and II.
Determining the maintenance intervals
based on the actual loads on the vehicle
covers every kind of operating situation.
Minimal use drivers, who drive fewer than
about 6,200 miles/10,000 km per year,
should nevertheless have the oil changed at least every 2 years since engine oil dete-
riorates over time, regardless of use.
Service and Warranty Information
Booklet for US models, Warranty and
Service Guide Booklet for Canadian
models
For additional information on required
maintenance intervals and procedures,
please refer to the Service and Warranty
Information Booklet for US models, or the
Warranty and Service Guide Booklet for
Canadian models.
Depending on operating conditions, it may
be advisable to have the body checked for
damage from rocks or gravel as a precau-
tion against corrosion.
BMW recommends that you have your
BMW center perform the mainte-
nance and repair.
Be sure that all maintenance work is
recorded in the Service and Warranty Infor-
mation Booklet for US models, Warranty
and Service Guide Booklet for Canadian
models. These entries will serve as proof
that the vehicle has received regular main-
tenance.<
Care
Interesting facts about the care of your
vehicle are found in the Caring for your
vehicle brochure.

Reference
At a glance
Controls
Driving tips
Mobility
105
Battery 91
– disposal 92
– indicator lamp 13, 91
– jump-starting 94
– remote control 17
Belts, refer to Safety
belts 30
Belt tensioner, refer to
Safety belts 30
Beverage holders 65
Blower
– air conditioning 59
– automatic climate
control 62
Blower, refer to Air
supply 59, 62
BMW 5
Bore, refer to Engine
data 100
Bottle holders, refer to
Beverage holders 65
Brake fluid 85
– filling 85
– indicator/warning
lamp 13, 85
– level 85
Brake force display 53
Brake hydraulic system 85
– indicator/warning
lamp 13, 69, 85
Brake lamps
– bulb replacement 90
– indicator lamp, defective
lamp 13
Brake pads 70
– break-in procedures 68
– indicator lamp 70
Brake pad wear indicator
– brake pads 70
– indicator lamp 13
Brake rotors
– brake system 69
– break-in procedures 68
Brakes 69
– ABS 54
– brake fluid 85
– break-in procedures 68
– indicator/warning
lamps 13, 52, 53, 54
– parking brake 38Brake system 69
– brake fluid level 85
– brake pads 70
– break-in procedures 68
– disc brakes 69
– indicator lamp 13
Breakdown
– Flat Tire Monitor 54
Break-in procedures 68
Bulb replacement, refer to
Lamps and bulbs 88
Buttons in steering
wheel 11
C
California Proposition
65 warning 87
Can holders, refer to
Beverage holders 65
Capacities 103
Car battery 91
Car care, refer to the Caring
for your vehicle brochure
Car-care products, refer to
the Caring for your
vehicle brochure
Care, refer to the Caring for
your vehicle brochure
Cargo loading
– vehicle 70
Car keys, refer to Keys 16
Carpet care, refer to the
Caring for your vehicle
brochure
Car radio, refer to Owner's
Manual for Radio
Car telephone, refer to
Owner's Manual for
Telephone
Car wash, refer to the
Caring for your vehicle
brochure
Catalytic converter, refer to
High temperatures 69
CD player operation, refer
to Owner's Manual
for Radio
Center high-mount brake
lamp
– bulb replacement 90Central locking system 16
– interior 18
Changing a wheel 91
Charge indicator
lamp 13, 91
Check Gas Cap
– indicator lamp 13
Child-restraint mounting
system, LATCH 35
Child-restraint systems 33
Child seat, refer to Child-
restraint systems 33
Chrome parts, refer to the
Caring for your vehicle
brochure
Cigarette lighter 65
Cigarette lighter socket 65
Cleaning the rear window,
refer to the Caring for
your vehicle brochure
Cleaning the vehicle, refer
to the Caring for your
vehicle brochure
Cleaning the windshield 44
Clock 49, 50
– 12- or 24-hour mode 50
– refer to Owner's Manual
for Radio/Onboard
Computer
– setting 49
Clothes hooks 25
Clutch
– break-in procedures 68
Cockpit 10
Cold start, refer to
Starting the engine 36
Compact disc operation,
refer to Owner's Manual
for Radio
Compartments 64
Compression ratio, refer to
Engine data 100
Computer 50
– clock, 12- or 24-hour
mode 50
– refer to Owner's Manual
for Onboard Computer
Computer, refer to
Onboard Computer 50
Condensation, refer to Air
conditioning mode 59, 62

Everything from A to Z
106 Condensation, removing
from windows
– air conditioning 60
– automatic climate
control 62
Configuring settings, refer
to Vehicle Memory,
Key Memory 31
Connecting a vacuum
cleaner, refer to Cigarette
lighter 65
Consumption, refer to
Average consumption 51
Consumption display, refer
to Fuel gauge 48
Control elements, refer to
Cockpit 10
Convenience operation
– convertible top 18
– from outside 18
– windows 18
Convertible top 21, 22
– care, refer to the Caring
for your vehicle brochure
– convenience operation 18
– electrical fault 23
– emergency closing 23
– fully automatic 22
– malfunction 23
– manual 21
Convertible top
compartment panel 20
Coolant 84
– indicator lamp 13
– level 84
– temperature 48
Coolant water, refer to
Coolant 84
Cooling, maximum 62
Cooling, refer to Air
conditioning mode 59, 62
Cooling system, refer to
Capacities 103
Cruise control 45
Cruising range 51
Cup holders, refer to
Beverage holders 65
Curb weight, refer to
Weights 101
Cylinders, refer to Engine
data 100
D
Data, technical 100
– capacities 103
– dimensions 102
– engine data 100
– weights 101
Daytime driving lamps 46
DBC Dynamic Brake
Control 53
– indicator lamp 13, 52
Defective bulb 46
Defrosting rear window
– air conditioning 59
– automatic climate
control 63
Defrosting windows 60, 62
– air conditioning 60
– automatic climate
control 62
Defrosting windows and
removing condensation
– air conditioning 60
– automatic climate
control 62
Defrosting windshield, refer
to Defrosting
windows 60, 62
Defrost position, refer to
Defrosting
windows 60, 62
Differential
– break-in procedures 68
Digital clock 49
Dimensions 102
Dimming mirror 31
Dipstick, engine oil 83
Directional indicators, refer
to Turn signal
indicators 43
Disc brakes 69
Displacement, refer to
Engine data 100
Display elements 12
Display lighting,
refer to Instrument
lighting 47
Displays, refer to
Instrument cluster 12Disposal
– oil 84
– vehicle battery 92
Distance remaining, refer to
Range 51
Door key 16
Door lock 18
Doors, unlocking and
locking
– from inside 18
– from outside 17, 18
DOT quality grades 77
Draft-free ventilation 59, 63
Driving Dynamic Control 42
Driving light, refer to
Parking lamps/Low
beams 46
Driving notes 69
– break-in procedures 68
– driving tips 69
Driving stability control 52
Dry air, refer to Air
conditioning mode 59, 62
DSC Dynamic Stability
Control 52
– indicator lamp 13, 52
DTC Dynamic Traction
Control 53
– indicator lamp 13, 52
Dynamic Brake Control
DBC 53
– indicator lamp 13, 52
Dynamic Stability Control
DSC 52
– indicator lamp 13, 52
Dynamic Traction Control
DTC 53
– indicator lamp 13, 52
E
Electrical fault
– automatic transmission
with Steptronic 40
– convertible top 23
– door lock 18
– driver's door 18
– fuel filler door 74
– luggage compartment
lid 19
– storage compartments 64

Reference
At a glance
Controls
Driving tips
Mobility
107
Electric Power Steering
EPS 43
– indicator lamp 13
Electric power windows 20
Electronic Stability
Program ESP, refer to
Dynamic Stability Control
DSC 52
Electronic transmission
control module 40
Emergency call 93
Emergency operation, refer
to Manual operation
– convertible top 23
– driver's door 18
– fuel filler door 74
– storage compartments 64
Engine 36
– break-in procedures 68
– data 100
– electronics 13
– indicator lamp 13
– speed 48
– starting 36
– switching off 37
Engine compartment 82
Engine coolant 84
Engine coolant
temperature gauge 48
Engine data 100
Engine oil 83
– alternative oils 84
– approved oils 84
– capacity 103
– indicator lamp 13
Engine oil level 83
– indicator lamp 13
Engine oil pressure 83
– indicator lamp 13
Engine oil sensor 83
– indicator lamp 13
Engine output, refer to
Engine data 100
Engine speed, refer to
Engine data 100
EPS Electric Power
Steering 43
Equipment range, see
Service and Warranty
Information Booklet for US models, Warranty and
Service Guide Booklet for
Canadian models
ESP Electronic Stability
Program, refer to
Dynamic Stability Control
DSC 52
Exhaust system, refer to
High temperatures 69
Exterior mirrors 31
– automatic dimming
feature 31
Eyelet, towing 96
F
False alarm, stopping
alarm 26
Fasten safety belts 30
– warning lamp 13, 30
Filter, refer to
– Microfilter 59
– Microfilter/activated-
charcoal filter 63
Fine wood, refer to the
Caring for your vehicle
brochure
First aid, refer to First-aid
kit 94
First-aid kit 94
Flat tire
– Flat Tire Monitor 54
– indicator/warning
lamp 13
Flat tire, refer to Tire
condition 78
Flat Tire Monitor 54
– indicator lamp 13, 55
– initializing 55
Flooding, refer to Driving
through water 69
Floor covers, carpets, refer
to the Caring for your
vehicle brochure
Floor mats, refer to the
Caring for your vehicle
brochure
Fluid reservoir
– washing systems 83
Fog lamps 47
– indicator lamp 13Follow me home lamps 46
Footbrake, refer to Driving
notes 69
Front airbags 56
Front turn signal indicators
– bulb replacement 90
Fuel
– average
consumption 51
– content, refer to
Capacities 103
– display 48
– preparation, refer to
Engine data 100
– quality 74
Fuel display, refer to Fuel
gauge 48
Fuel filler door 74
– unlocking in case of
electrical fault 74
Fuel gas cap 74
Fuel tank capacity, refer to
Capacities 103
Fuses 92
G
Gasoline, refer to Fuel
quality 74
Gasoline gauge, refer to
Fuel gauge 48
Gear indicator 40
Gear lever
– automatic transmission
with Steptronic 39
– manual transmission 38
Glove compartment 64
Gross weight, refer to
Weights 101
H
Handbrake, refer to Parking
brake 38
Hands-free microphone,
refer to Preparations for
the cellular phone 65
Hands-free system 65
Hardtop, refer to the
separate Owner's Manual
Hardtop preparation 71

Everything from A to Z
108 Hazard warning flashers 10
Headlamp cover, care,
refer to the Caring for
your vehicle brochure
Headlamp flasher 43
– indicator lamp 13
Headlamps
– bulb replacement 88
– care, refer to the Caring
for your vehicle brochure
– cleaning 44
Headlamps, automatic
control 46
Headlamp washer
reservoir 83
– content, refer to
Capacities 103
Headlamp washer
system
– cleaning the
headlamps 44
– washing fluids 83
Head restraints 28
Heated mirrors 31
Heated seats 30
Heating 58
– exterior mirrors 31
– rear window 59, 63
– seats 30
Heavy loads, refer to
Stowing cargo 70
Height, refer to
Dimensions 102
Height adjustment
– seats 28
– steering wheel 30
High beams 47
– bulb replacement 89
– headlamp flasher 43
– indicator lamp 13
High Performance
Synthetic Oil 84
– alternative oils 84
– approved oils 84
High temperatures 69
Holders for beverages 65
Hood 81
Horn 10
Hydraulic Brake Assistant,
refer to Dynamic Brake
Control DBC 52Hydraulics
– brakes 85
Hydroplaning 69
I
Ice warning 50
Identification mark
– Run Flat tires 80
Ignition 36
Ignition key 16
Ignition lock 36
Inclines 69
Index 104
Indicator/warning lamp
– airbags 57
– alarm system 26
– brakes 13
– coolant temperature 49
– DSC 52
– engine temperature 48
– Flat Tire Monitor 55
– fog lamps 47
– passenger airbags 34
– please fasten safety
belts 30
– reserve 48
Indicator and warning
lamps, overview 12
Individual air
distribution 59, 62
Individual settings, refer to
Vehicle Memory,
Key Memory 31
Inflation pressure, tires 75
Inflation pressure
monitoring, refer to Flat
Tire Monitor 54
INSPECTION 49
Instrument cluster 12
Instrument lighting 47
Instrument panel, refer to
Cockpit 10
Interior lamps 47
– remote control 17
Interior motion sensor 26
Interior rearview mirror 31
– automatic dimming
feature 31
Interior temperature
– adjusting 59, 62Interlock, refer to
Steering lock 36
Intermittent
– operation, wipers 44
Interval
– display, service 49
J
Jack 91
Jacking points 91
Jets, refer to
Ventilation 59, 63
Jump-starting 94
K
Key Memory 31
Keys 16
Key switch for passenger
airbags 33
Kickdown 39
Knock control 74
L
Lamps 46
Lamps and bulbs 88
LATCH, child-restraint
mounting system 35
Leather care, refer to the
Caring for your vehicle
brochure
Length, refer to
Dimensions 102
License plate lamps
– bulb replacement 91
Light-alloy wheels, care,
refer to the Caring for
your vehicle brochure
Lighter 65
Lighting
– of the instruments 47
Lighting of the instruments,
refer to Instrument
lighting 47
LIGHTS ON warning 46
Light switch 46
Loads, refer to Cargo
loading 70
Loads, securing 70