2010 BMW Z4 ROADSTER SDRIVE35I power steering

Controls
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Dynamic Driving Control
The concept
Dynamic Driving Control can be used to adjust
the driving dynamics of the vehicle.
Several programs are available for this purpose;
they can be activated using the two Dynamic
Driving Control buttons.
The following characteristics are adapted,
depending on which program was selected:
>Engine response.
>Shift times of the automatic transmission
*.
>Power steering support
*.
>Changes in the suspension characteristics
through damping control
*.
>Vehicle stabilization through DSC Dynamic
Stability Control.
Operating the programs
1You can activate or deactivate the following
programs using this button:
>DSC OFF
>TRACTION
2You can activate or deactivate the following
programs using this rocker switch:
>SPORT+
>SPORT
>NORMAL
DSC OFF
Driving stability is limited during acceleration
and when driving in bends.
To increase vehicle stability, activate DSC again
as soon as possible.
Activating DSC OFF
Press and hold the button, but not
longer than approx. 10 seconds, until
the indicator lamp for the DSC lights up in the
instrument cluster and DSC OFF is displayed in
the instrument cluster.
The DSC system is switched off.
Deactivating DSC OFF
Press the button.
DSC OFF and the DSC indicator lamp
go out.
For better control
When DSC is switched off, DSC OFF is dis-
played in the instrument cluster.
The indicator lamp lights up: DSC is
deactivated.
TRACTION
Maximum traction on loose road surfaces. DTC
Dynamic Traction Control is switched on. Driv-
ing stability is limited during acceleration and
when driving in bends.

Controls
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able to detect or signal low tire pressure as
intended. TPMS malfunctions may occur for a
variety of reasons, including the installation of
replacement or alternate tires or wheels on the
vehicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly.
Servotronic*
The concept
The Servotronic varies the steering force
required to turn the wheels depending on the
speed at which you are driving. When you are
driving at low speeds, power steering provides
more support, i. e. little effort is needed to turn
the wheels. Power steering support lessens as
your speed increases.
The system works automatically.
Malfunction
Malfunctions are displayed via Check Control.
Dynamic brake lamps*
On the left: normal braking.
On the right: sharp braking.
During sharp braking, the brake lamps and the
dynamic brake lamps of your BMW light up.
The dynamic brake lamps are automatically
activated if the turn signal is not flashing.
Airbags
The following airbags are located under the
marked covers:
1Front airbags
2Side airbags in the seat backrests
3Knee airbag
Protective action
Observe the adjustment instructions on
page41 to ensure the best possible per-
sonal protection.<
The front airbags help protect the driver and
passenger by responding to frontal impacts in
which safety belts alone cannot provide ade-
quate restraint. When needed, the side airbags
help provide protection in the event of a side
impact. The relevant side airbag supports the
head and the side upper body area.
The airbags have been designed to not be trig-
gered in every collision situation, e.g., not in
minor accidents or rear-end collisions.
Do not apply adhesive materials to the
cover panels of the airbags, cover them or
modify them in any other way.
Keep the dashboard and window on the pas-
senger side clear, i.e., do not cover with adhe-
sive labels or coverings, and do not attach hold-
ers such as for navigation instruments and
mobile phones.
Do not attach seat covers, cushions or other
objects to the front seats that are not specifi-
cally approved for seats with integral side air-
bags. Do not hang items of clothing such as
coats or jackets over the backrests.
Do not attempt to remove the airbag retention
system from the vehicle. Do not modify the indi-

Controls
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Activating/deactivating welcome
lamps
1."Settings"
2."Lighting"
3."Welcome light"
Welcome lamps are activated and are
stored for the remote control currently in use.
Pathway lighting
If you activate the headlamp flasher after
parking the car, with the lights switched off,
the low beams come on and remain on for a
certain time.
You can adjust the operating period or deacti-
vate the function.
1."Settings"
2."Lighting"
3."Pathway light.:"
4.Set or deactivate the duration.
The setting is stored for the remote control cur-
rently in use.
Daytime running lights
The daytime running lights light up in switch
position0, 1 and 3. They are less powerful than
the low beams.
Activating/deactivating the daytime
running lights
1."Settings"
2."Lighting"
3."Daytime running lamps"
Daytime running lights are activated and
are stored for the remote control currently
in use.
Adaptive light control*
The concept
Adaptive light control is a variable headlamp
control system that enables better illumination
of the road surface. Depending on the steering
angle and other parameters, the light from the
headlamp follows the course of the road.
Activating adaptive light control
With the ignition switched on, turn the light
switch to position 3, refer to page88.
Standstill function
*: To avoid blinding oncom-
ing traffic, adaptive light control directs light
towards the passenger side when the vehicle is
at a standstill.
Malfunction
A message appears on the Control Display.
Adaptive light control is malfunctioning or has
failed. Have the system checked as soon as
possible.

Climate
94
Air conditioning system
1Air distribution
2Recirculated-air mode
3Cooling function4Temperature
5Air flow rate
6Rear window defroster
Air distribution
Direct the flow of air to the win-
dows , to the upper body area
o r to the kne e a rea and fo otwe ll
. Intermediate settings are pos-
sible. In the 6 o'clock position, a small amount
of air is also directed towards the windows in
order to keep them from fogging over.
Recirculated-air mode
If the air outside the car has an
unpleasant odor or contains pollut-
ants, shut off the supply to the interior of the car
temporarily. The system then recirculates the
air currently within the vehicle.
You can also activate/deactivate the recircu-
lated-air mode by means of a button
* on the
steering wheel, refer to page11.
If condensation starts to form on the
inside window surfaces during operation
in the recirculated-air mode, you should switch
it off while also increasing the air flow rate as
required.
The recirculated-air mode should not be used
continuously for lengthy periods; otherwise, the
quality of the air inside the car will gradually
deteriorate.<
Air flow rate
Press the corresponding button.
The higher the rate, the more
effective the heating or cooling
will be.
The air flow rate may be reduced or the blower
may be switched off entirely to save on battery
power.
Switching the system on/off
With the blower at its lowest set-
ting, press the left side of the but-
ton. The blower and air conditioner
are completely switched off and the air supply is
cut off.
To switch on the air conditioner, set the desired
air flow rate.
Switching cooling function on/off
The cooling function cools and
dehumidifies the incoming air
before reheating it as required, according to the
temperature setting. This function is only avail-
able while the engine is running.
The cooling function helps prevent condensa-
tion on the windows or removes it quickly.
Depending on the weather, the windshield may
fog over briefly when the engine is started.

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Calibrating the digital compass
The digital compass must be calibrated in the
following situations:
>An incorrect compass direction is shown.
>The compass direction shown does not
change although the direction of
travel does.
>Not all compass directions are shown.
Procedure
1.Make sure that no large metal objects or
overhead power lines are in the vicinity of
your vehicle and that you have enough
space to drive in a circle.
2.Set the currently valid compass zone.
3.Ensure that the retractable hardtop is fully
closed.
4.Press the adjustment button for approx.
6-7 seconds to call up C. Drive at least one
full circle at a maximum speed of 7 km/h.
After the system is calibrated correctly, dis-
play C is replaced by the compass direc-
tions.
5.Open the retractable hardtop fully and
repeat step 4.
Setting right-hand/left-hand steering
Your digital compass is factory-set to right-
hand or left-hand steering, in accordance with
your vehicle.
Setting the language
You can set the language of the display:
Press the adjustment button for approx.
12-13 seconds. Briefly press the adjustment
button again to switch between English, "E",
and German, "O".
The setting is automatically saved after approx.
10 seconds.
Glove compartment
Opening
Pull the handle, arrow2.
The light in the glove compartment comes on.
To prevent injury in the event of an acci-
dent while the vehicle is being driven,
close the glove compartment immediately
after use.<
Closing
Fold cover up.
Locking
Lock with a key, arrow1.
If you hand out the remote control without
the integrated key, such as at a hotel,
refer to page28, the glove compartment cannot
be unlocked.
USB interface for data transmission
Port for importing and exporting data on a USB
device, e.g., music collections, refer to
page158.

Things to remember when driving
114 The risk of hydroplaning increases with declin-
ing tread depth on the tires, refer also to Mini-
mum tread depth on page198.
Driving through water
Drive though calm water only if it is not
deeper than 1 ft/25 cm and at this height
no faster than walking speed, up to 6 mph/
10 km/h. Otherwise, the vehicle's engine, the
electrical systems and the transmission may be
damaged.<
Use the parking brake on inclines
On inclines, do not hold the vehicle for a
lengthy period using the clutch; use the
parking brake instead. Otherwise, greater
clutch wear will result.<
For more information about the drive-off assis-
tant, refer to page80.
Braking safely
Your BMW is equipped with ABS as a standard
feature. Applying the brakes fully is the most
effective way of braking in situations in which
this is necessary. Since the vehicle maintains
steering responsiveness, you can still avoid
possible obstacles with a minimum of steering
effort.
Pulsation of the brake pedal, combined with
sounds from the hydraulic circuits, indicate that
ABS is in its active mode.
Driving in wet conditions
When roads are wet or there is heavy rain,
briefly exert gentle pressure on the brake pedal
every few miles. Monitor 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. Full
braking efficiency will then be available when
you need it.
Hills
To prevent overheating and the resulting
reduced efficiency of the brake system,
drive long or steep downhill gradients in the
gear in which the least braking is required. Even light but consistent brake pressure can lead to
high temperatures, brake wear and possibly
even brake failure.<
You can increase the engine's braking effect by
shifting down, all the way to first gear if neces-
sary. This strategy helps you avoid placing
excessive loads on the brake system. Down-
shifting in manual mode of the automatic trans-
mission, refer to page54.
7-gear sport automatic transmission with
dual clutch: Never drive with the trans-
mission in neutral or with the engine switched
off; otherwise, engine braking action will not be
present or there will be no power assistance to
the brakes or steering.
Manual transmission: Never drive with the
clutch held down, with the transmission in neu-
tral or with the engine switched off; otherwise,
engine braking action will not be present or
there will be no power assistance to the brakes
or steering.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
pedals; otherwise, pedal function could be
impaired.<
Corrosion on brake rotors
When the vehicle is driven only occasionally,
during extended periods when the vehicle is not
used at all, and in operating conditions where
brake applications are less frequent, there is an
increased tendency for corrosion to form on
rotors, while contaminants accumulate on the
brake pads. This occurs because the minimum
pressure which must be exerted by the pads
during brake applications to clean the rotors is
not reached.
Should corrosion form on the brake rotors, the
brakes will tend to respond with a pulsating
effect that even extended application will fail
to cure.
When the vehicle is parked
Condensation forms while the automatic cli-
mate control is in operation, and then exits
under the vehicle. Traces of condensed water
under the vehicle are therefore normal.

Mobility
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Rear
Release the cover panel in the bumper:
Press on the recess at the bottom center in the
cover panel.
Being towed
Make sure that the ignition is switched on,
refer to page50; otherwise, the low-beam
headlamps, tail lamps, turn signal indicators and
windshield wipers may be unavailable.
If the electrical system fails, do not tow-start or
tow the vehicle. The electrical steering wheel
lock cannot be released and the vehicle cannot
be steered. Jump-starting, refer to page219.
Power steering assistance is not available when
the engine is not running. Thus, braking and
steering will require increased effort.<
Manual transmission
Gearshift lever in neutral position.
Automatic transmission
Selector lever in position N.
Changing selector lever positions, refer
to page54.
Do not exceed a towing speed of 31 mph
or 50 km/h and a towing distance of
31 miles/50 km; otherwise, the automatic
transmission may be damaged.<
7-gear sport automatic transmission
with dual clutch
Ensure that transmission lock P is not
engaged as the rear wheels will otherwise
be blocked.
When using the car wash function, refer to
page209, note that the parking lock P is
engaged automatically after approx. 30 min-
utes, blocking the rear wheels.
If an electrical malfunction occurs or if towing
takes longer than approx. 20 minutes, manually
release the parking lock, refer to page58.<
Do not exceed a towing speed of 31 mph
or 50 km/h and a towing distance of
31 miles/50 km; otherwise, the 7-gear sport
automatic transmission may be damaged.<
Towing methods
Do not lift the vehicle by a tow fitting or
body and chassis parts; otherwise, dam-
age may result.<
With a tow bar
The towing vehicle must not be lighter
than the towed vehicle; otherwise, it may
be impossible to maintain control.<
The tow fittings used should be on the same
side on both vehicles. Should it prove impossi-
ble to avoid mounting the tow bar at an angle,
please observe the following:
>Clearance and maneuvering capability will
be sharply limited during cornering.
>The tow bar will generate lateral forces if it is
attached offset.
Attach the tow bar to the tow fittings only,
as attaching it to other parts of the vehicle
could result in damage.<

Reference 237
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Automatic high beams and
low beams, refer to High-
beam assistant90
Automatic recirculated-air
control AUC98
Automatic Service
Request188
Automatic transmission with
Steptronic53
– interlock53,54
– overriding selector lever
lock55
– shiftlock, refer to Changing
selector lever position54
– sport program54
– towing220
– tow-starting220
AUTO program for automatic
climate control97
AUX-IN port104,163
Available services188
Average fuel consumption66
– setting the units68
Average speed66
Avoid highways in
navigation130
Avoiding unintentional
alarms34
Axle loads, refer to
Weights228
B
Backrest contour, refer to
Lumbar support43
Backrests, refer to Seat
adjustment42
Backrest width adjustment43
Backup lamps
– replacing bulb214
Backup lamps, refer to Tail
lamps214
Band-aids, refer to First-aid
pouch219
Bar, refer to Towing
methods221Base plate for telephone or
mobile phone
– refer to Snap-in adapter180
– refer to Snap-in adapter in
the center armrest storage
compartment104
Bass, tone setting140
Battery216
– charging216
– disposal36,216
– jump-starting219
– remote control28
– temporary power failure216
Battery for mobile phone181
Battery renewal
– remote control36
– remote control for vehicle36
Being towed221
Belts, refer to Safety belts44
Belt tensioner, refer to Safety
belts44
Beverage holders, refer to
Cupholders105
Blower, refer to Air flow
rate94,97
Bluetooth, activating/
deactivating173
Bluetooth, refer to separate
Owner's Manual
BMW
– car shampoo211
BMW Assist,
activating186,188
BMW Assist184
BMW Homepage4
BMW Maintenance
System206
BMW Search186
BMW webpage4
Bottle holders, refer to
Cupholders105
Brake
– parking brake52
Brake Assist, refer to Dynamic
Brake Control DBC78Brake fluid, refer to Service
requirements69
Brake Force Display85
Brake lamps
– Brake Force Display85
– replacing bulb214
Brake pads112
– breaking in112
Brake rotors114
– brakes112
– breaking in112
Brakes
– ABS78
– BMW Maintenance
System206
– breaking in112
– service requirements69
Brakes, refer to Braking
safely114
Brake system112
– BMW Maintenance
System206
– breaking in112
– disc brakes114
Breakdown services, refer to
Roadside Assistance218
Breaking in the clutch112
Breaking in the differential,
refer to Engine and
differential112
Break-in period112
Brightness of Control
Display76
Bulb changing, refer to Lamps
and bulbs212
Button for starting the engine,
refer to Start/stop button50
Buttons on the steering
wheel11
C
California Proposition 65
warning6