2005 BMW Z4 ROADSTER 3.0I brake light

At a glance
Controls
Driving tips
Mobility Reference
13
Colors
The indicator and warning lamps can light up in
various colors and combinations.
>Red:
Stop the vehicle immediately
or
an important reminder
>Red and yellow:
Continue driving cautiously
>Yellow:
Have the system checked soon
or
for your information
>Green or blue:
For your information. Engine oil pressure/Engine oil level/
Engine oil sensor
+86
Brake system
+
Parking brake released88
Parking brake applied37
With other warning lamps51
Brake warning lamp for Canadian
models
Antilock Brake System ABS/Driving
stability control systems
+50
Antilock Brake System ABS/Driving
stability control systems for Canadian
models
Dynamic Stability Control
DSC
+50
Dynamic Traction Control
DTC
+50
Flat Tire Monitor
+52
Automatic transmission/Sequential
manual gearbox SMG
+39, 41
Brake pads
+88
Add coolant87
Check gas cap
+76
Service engine soon
+90
Service engine soon indicator lamp for
Canadian models
Defective bulb56
Turn signal indicators42
Fog lamps57
Headlamp flasher/High beams42, 57
Electric Power Steering
+42
Doors or luggage compartment lid
open
Engine electronics
+
Malfunction in the engine electronics.
You can continue to drive with
reduced engine output or engine
speed. Please have the system
inspected by your BMW center.

Driving
36
Driving
Ignition lock
0 Steering locked
This is the only position in which the ignition key
can be inserted or removed.
After removing the key, turn the steering wheel
slightly to the left or right until the lock engages.
If the key is not removed, an acoustic signal
sounds when the driver's door is opened.
Interlock
Vehicles with automatic transmission:
In order to turn the key back to position0 or to
remove it, move the selector level into position
P first.
1 Steering unlocked
You will find that it is often easier to turn the
ignition key from position0 to 1 if you move the
steering wheel slightly to help disengage the
detent.
Individual electrical equipment and accessories
are available for use.
2 Ignition switched on
All systems are operational.
3 Starting engine
Engine
Engine idle speed is controlled by the engine
computer system. Increased speeds at start-up are normal and should decrease as the engine
warms up. If engine speed does not decrease,
service is required.
To prevent the battery from discharging, always
deactivate electrical devices that are not in use.
Switch the ignition off when the vehicle is not
being driven.
Do not leave the engine running in
enclosed spaces. Otherwise, inhaling the
hazardous exhaust gases could lead to uncon-
sciousness and death. The exhaust gases con-
tain carbon monoxide, an odorless and color-
less, but highly toxic gas.
Do not leave the vehicle unattended with the
engine running. An unattended vehicle with a
running engine poses a safety hazard.
Before you leave the vehicle with the engine
running, place the engine in idle first or engage
the P position and apply the parking brake. If
you fail to do this, the vehicle could move.<
Starting the engine
Do not press the accelerator pedal while start-
ing the engine.
Do not let the engine warm up in idling position.
Instead, begin to drive at moderate engine
speeds.
Vehicles with manual transmission:
Step on the clutch when starting the vehi-
cle. A lockout prevents the engine from starting
if the clutch is not depressed.<
Do not end the starting procedure too early, but
do not continue it for more than 20 seconds.
Release the ignition key immediately when the
engine starts.
If the engine fails to start on the first attempt,
e.g. if it is very hot or cold:
Press the accelerator pedal halfway down.
Cold starts at very low temperatures, below
approx. +57/–156, and at high altitudes,
above 3,300 ft/1,000 m:

Reference
At a glance
Controls
Driving tips
Mobility
37
>On the first attempt, engage the starter for
approx. 10 seconds
>Press the accelerator pedal halfway down.
Avoid frequent starting attempts in short
succession or repeated starting attempts
during which the engine does not start. Other-
wise, uncombusted or incompletely combusted
fuel will pose a risk of the catalytic converter
overheating and being damaged.<
Manual transmission
1.Engage the parking brake
2.Gearshift lever in idling position
3.Depress the clutch pedal.
If the clutch pedal is not depressed, the
engine cannot be started
4.Start the engine.
Automatic transmission
1.Depress footbrake
2.Place selector lever in position P or N
3.Start the engine.
Sequential manual gearbox SMG
1.Depress footbrake
2.Move selector lever to neutral position N
3.Start the engine.
If the engine does not start, re-engage the
position last selected, refer to the display
in the instrument cluster, and then engage posi-
tion N again.<
Switching off the engine
Do not remove the ignition key while the
vehicle is still moving. If you did so, the
steering lock would engage when the steering
wheel is turned.
When you leave the vehicle, always remove the
ignition key and engage the steering lock.
Apply the parking brake when parking on steep
gradients, as the vehicle could otherwise start
to roll.<
You can have an acoustic signal set as a
reminder that the ignition key is still in the ignition switch after the driver's door has been
opened.<
Manual transmission
1.Turn the ignition key to position 1 or 0
2.Engage first gear or reverse gear.
Automatic transmission
1.Place the selector lever in position P
2.Turn the ignition key to position 1 or 0.
Sequential manual gearbox SMG
1.Engage a drive position
2.Turn the ignition key to position 1 or 0. An
acoustic signal sounds if the engine is
switched off while position N is engaged.
Parking brake
The parking brake is designed primarily to pre-
vent the vehicle from rolling when parked. It
operates against the rear wheels.
The indicator lamp lights up. As the
vehicle drives off, an acoustic signal
also sounds. The parking brake has
been applied.
Indicator lamp for Canadian models.
To engage
The detent engages automatically and the indi-
cator lamp in the instrument cluster comes on
when the ignition key is in position 2.

Driving
38
To release
Pull up slightly on the lever, press the button
and lower the lever.
If, in exceptional circumstances, it should
be necessary to engage the parking brake
while the vehicle is in motion, do not pull it with
excessive pressure. Keep the release button on
the parking brake lever pressed down while
pulling up the lever.
Excessive pressure can lead to overbraking and
loss of traction, fishtailing, at the rear axle.
The brake lamps do not come on when the
parking brake is engaged.<
To avoid corrosion and one-sided brak-
ing, apply the parking brake lightly from
time to time when coasting to a standstill at a
traffic signal, for example, provided that it is safe
to do so.<
Manual transmission
6-gear transmission*
When shifting into 5th or 6th gear, press
the gearshift lever to the right. Otherwise,
the engine could be damaged by accidentally
engaging 3rd or 4th gear.<
Reverse
Select only when the vehicle is stationary. Press
the gearshift lever to the left to overcome the
resistance.
As you do this, the backup lamps will come on
automatically when the ignition key is in
position 2.
Automatic transmission with
Steptronic*
In addition to operating the Steptronic as a fully
automatic transmission, you can also shift
gears manually with it, refer to page39.
Selector lever positions
P R N D M/S + —
Available indicators
P R N D SD M1 to M5
The selector lever position is displayed; in the
manual mode, the gear currently engaged is
shown.
Range selection
>The selector lever can be moved out of
position P when the ignition is switched on
or the engine is running: interlock
>While the vehicle is stationary and before
shifting out of P or N, depress the footbrake
in order to disengage the selector lever's
lock mechanism: shiftlock.
Hold the footbrake down until starting off.
The vehicle will otherwise start to move
when a drive position is engaged.

Reference
At a glance
Controls
Driving tips
Mobility
41
Kickdown:
For rapid acceleration, e.g. during passing,
depress the accelerator pedal completely. You
achieve maximum acceleration.
To switch back to sequential mode: tap the
selector lever again to the right toward D, or
change the current gear via the shift paddles or
the selector lever.
When driving off on inclines, drive
smoothly without pausing. Do not keep
the vehicle in place by depressing the accelera-
tor pedal; instead, apply the parking brake. Oth-
erwise, the gearbox could overheat.<
Shifting gears
With selector lever
>To upshift, tap the selector lever toward +
>To downshift, tap the lever toward –.
With shift paddles on steering wheel
>To upshift, pull one of the shift paddles
>To downshift, push the paddle.
In the following situations, the SMG in the
sequential mode assists you:
>The transmission will only execute upshifts
and downshifts that will result in an appro-
priate combination of vehicle speed and
engine rpm. For instance, downshifts that
would result in excessive engine speed
cannot be executed
>During a stop the gearbox is automatically
downshifted into first gear
>Shortly before a gear-dependent minimum
speed is reached, the gearbox automatically
shifts down without you taking any action.
Malfunction
The warning lamp lights up. The trans-
mission system is malfunctioning.
Avoid heavy loads.
All of the selector lever positions can continue
to be engaged; in the forward drive positions,
however, the vehicle will be operating in a
restricted gear range only. Have the system
checked as soon as possible.
Towing and tow-starting, refer to page98;
Jump starting, refer to page97.
Overheating
An acoustic warning signal sounds. The gear-
box is overheating. If possible, stop the vehicle
or drive off swiftly so that the system can cool
off again.
Driving Dynamic Control
Driving Dynamic Control allows your BMW to
react in a sportier driving style at the touch of a
button:
>The engine responds more spontaneously
to any motion of the accelerator pedal
>The vehicle is steered more directly and
traction is enhanced
>Cruise control:
When the speed last stored is called up, this
speed is attained more quickly.
Additional features with SMG:
>Gears are shifted more quickly
>The engine speed range is optimally utilized
in the drive mode.
With automatic transmission:
>The Sport program is activated.

Technology for safety and driving convenience
50
Technology for safety and driving
convenience
Driving stability control
systems
Your BMW is equipped with a series of systems
that help maintain driving stability even in
adverse driving situations.
Antilock Brake System ABS
ABS keeps the wheels from locking during
braking. Steering stability is maintained even
during full brake applications. In this way, active
safety is enhanced.
ABS is operational each time the engine is
started. Braking safely, refer to page69.
Electronic brake-force distribution
The system controls brake-force application at
the rear wheels in order to obtain increased sta-
bility in the vehicle's braking response.
Dynamic Brake Control DBC
When the brake pedal is depressed quickly, this
system automatically supplies maximum brake-
servo boost, thereby helping to keep the vehi-
cle's braking distance as short as possible dur-
ing full brake applications. At the same time, the
benefits of the ABS are also exploited.
As long as you are braking, do not reduce pres-
sure on the brake pedal. When the brake pedal
is released, the DBC is switched off.
Dynamic Stability Control DSC
DSC prevents slip at the drive wheels while
starting off and accelerating the vehicle. DSC
also recognizes unstable vehicle conditions,
such as fishtailing or nose-diving. In these
cases, and subject to physical limits, DSC helps
to keep the vehicle on a steady course by
reducing engine speed and by applying brakes
at individual wheels.The laws of physics cannot be repealed
even with DSC. It will always be the
driver's responsibility to drive in a manner that
matches road conditions. Therefore, do not
limit the additional safety margin by practicing
risky driving.<
Dynamic Traction Control DTC
DTC is a variant of the DSC in which forward
momentum is optimized for special road condi-
tions, e.g. snow-covered roads that have not
yet been cleared. The system ensures maxi-
mum forward momentum, but driving stability is
limited. Therefore, drive carefully in accordance
with conditions.
In the following exceptional circumstances, it
may be effective to activate the DTC for a short
period:
>When driving on snow-covered grades, in
slush or on uncleared, snow-covered roads
>When rocking the vehicle or starting off in
deep snow or on loose surfaces
>When driving with snow chains.
Activating DTC
Press the button briefly; the DTC indicator lamp
lights up in the instrument cluster.
Reactivating DTC
Press the button again; the DTC indicator lamp
goes out in the instrument cluster.

Reference
At a glance
Controls
Driving tips
Mobility
51
Deactivating DTC and DSC at the same
time
Press and hold the button for at least
3 seconds; the DSC indicator lamp lights up in
the instrument cluster. No more interventions
to increase stability and forward momentum are
carried out.
To enhance vehicle stability, reactivate DSC as
soon as possible.
Reactivating DSC
Press the button briefly; the indicator lamp goes
out in the instrument cluster.
Checking
The indicator lamp flashes:
DSC or DTC is regulating drive torque
and braking forces.
The indicator lamp lights up:
DTC and DSC have been deactivated together
by pressing the DTC button.
The indicator lamp lights up:
DTC has been activated by pressing
the DTC button.
The DSC indicator lamp flashes and the
DTC indicator lamp is lit:
DTC is actively regulating drive torque
and braking forces.
Malfunction in the driving stability
control systems
The warning lamp for the brake system
lights up in red, together with the yellow
indicator lamps for ABS and DSC:
The driving stability control systems
have failed.
Continue driving cautiously and defensively.
Avoid hard brake applications. Have the system
checked immediately.
Indication of the above-described mal-
function in Canadian models.
The DSC warning lamp lights up
together with the yellow warning lamp
for the brake system:
DSC, including DTC and DBC, are mal-
functioning.
The stabilizing interventions are no longer avail-
able. The vehicle remains operational. Have the
system checked as soon as possible.
Indication of the above-described mal-
function in Canadian models.

Technology for safety and driving convenience
52
Brake force display
The Brake force display lights up in two stages
depending on how strongly you are braking.
>Normal braking:
The brake lamps and the center brake lamp
light up
>Hard braking or braking with ABS:
In addition, the illuminated surface of the
brake lamps is extended, refer to the pic-
ture.
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.
In the event of tire pressure loss, the rolling
radius of the tire changes, thereby affecting the
rotational speed of the wheels. This change is
detected, and a flat tire warning is issued to the
driver.
System requirements
To ensure a reliable flat tire warning, the system
must be initialized with the correct tire inflation
pressures.
Each time you correct the pressure in a
tire, or change a wheel or tire, the system
must be re-initialized.<
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 place in all four
tires over an extended period of time.<
The system could issue a false warning or func-
tion in a delayed manner in the following situa-
tions:
>System was not initialized
>You are driving on a snow-covered or slip-
pery road surface
>Performance-oriented driving: slip at the
drive wheels, high levels of lateral accelera-
tion
>You are driving with snow chains.
Initializing the system
The initialization is completed while you
are driving, and can be interrupted at any
time. Initialization is automatically continued
when you continue driving.
When driving with snow chains, do not initialize
the system.<
1.Start the engine, but do not drive off
2.Press the button as long as you need to until
the yellow indicator lamp in the instrument
cluster lights up for a few seconds
3.Drive off.
Initialization is completed during the drive,
without any feedback issued.