2005 BMW Z4 ROADSTER 3.0I Dtc

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
42
To activate the system
Ignition key in position 2
Press the SPORT button.
The LED in the button lights up.
To deactivate the system
Press the SPORT button again.
The LED in the button goes out.
Acceleration assistant with SMG
The acceleration assistant permits optimum
racing-style acceleration on skid-resistant
roads.
Do not use the acceleration assistant too
often, as this could cause the vehicle's
parts to wear prematurely.<
1.Activate Driving Dynamic Control
2.Press the DTC button, refer to page51, for
more than three seconds
3.Depress the accelerator all the way down
rapidly: kickdown. The optimum rpm for
driving off will be adjusted.
To maintain vehicle stability, drive with
the DSC switched on whenever possi-
ble.<
Electric Power Steering EPS
The concept
The electric power steering is a direct, sporting
steering system that is speed-sensitive.
Power support is reduced with an increase in
driving speed.
Malfunction
The indicator lamp stays lit:
The system has malfunctioned or is
faulty.
Steering remains operational.
Have the system checked as soon as possible.
Turn signal indicators/
Headlamp flasher
1High beams
2Headlamp flasher
3Turn signal indicators
If the flashing of the indicator lamp
and the clicking from the relay are
both faster than normal, one of the turn sig-
nal indicators has failed.<
To signal briefly
Press the lever up to the detent but not beyond.
It then returns to the center position when
released.

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.

Reference
At a glance
Controls
Driving tips
Mobility
109
Dry air, refer to Air
conditioning mode59,62
DSC Dynamic Stability
Control50
– indicator lamp13,51
DTC Dynamic Traction
Control50
– indicator lamp13,51
Dynamic Brake Control
DBC50
– indicator lamp13
– warning lamp51
Dynamic Stability Control
DSC50
– indicator lamp13,51
Dynamic Traction Control
DTC50
– indicator lamp13,51
E
Electrical fault
– automatic transmission with
Steptronic39
– convertible top23
– door lock18
– driver's door18
– fuel filler door76
– luggage compartment lid18
– SMG41
– storage compartments64
Electric Power Steering
EPS42
– indicator lamp13,42
Electric power windows20
– power loss20
Electronic Stability Program
ESP, refer to
Dynamic Stability Control
DSC50
Electronic transmission
control module39
Emergency call96Emergency operation, refer to
Manual operation
– convertible top23
– doors18
– driver's door18
– fuel filler door76
– luggage compartment lid18
– storage compartments64
Emergency service, refer to
Mobile Service96
Engine36
– break-in procedures68
– data102
– electronics13
– indicator lamp13
– speed46
– starting36
– switching off37
Engine compartment85
Engine coolant87
Engine coolant temperature
gauge46
Engine data102
Engine oil86
– alternative oils87
– approved engine oils87
– capacity105
– indicator/warning lamp13
Engine oil level86
– indicator/warning lamp13
Engine oil pressure86
– indicator/warning lamp13
Engine oil sensor86
– indicator/warning lamp
13
Engine output, refer to Engine
data102
Engine speed, refer to Engine
data102
EPS Electric Power
Steering42
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC50
Exhaust system, refer to Hot
exhaust system69
Exterior mirrors31
– automatic dimming
feature70
– folding in and out31Eyelets, towing and tow-
starting98
F
False alarm, refer to
– Avoiding unintentional
alarms26
– Stopping the alarm26
Fasten safety belts
– refer to Safety belts30
– warning lamp12,30
Fault
– automatic transmission39
– luggage compartment lid18
– SMG41
Filter, refer to
– Microfilter59
– Microfilter/activated-
charcoal filter63
Fine wood, refer to the
Caring for your vehicle
brochure
Finger guard system, power
windows20
First aid, refer to First-aid
kit97
First-aid kit97
Flat
– Run Flat tires82
Flat tire
– Flat Tire Monitor52
– indicator/warning lamp13
– Run Flat tires82
Flat tire, refer to
– Changing a wheel94
– Tire condition81
Flat Tire Monitor52
– indicator/warning
lamp13,53
– initializing52
– warning lamp53
Flat tire service, refer to
Mobile Service96
Floods, refer to Driving
through water69
Floor covers, carpets, refer to
the Caring for your vehicle
brochure