2008 BMW Z4 3.0SI COUPE clutch

Driving
40
Driving
Ignition lock
0Steering locked
1Steering unlocked
2Ignition switched on
3Starting the engine
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.
Interlock with automatic transmission
The key can only be turned back to position 0 or
removed if the selector lever is in position P:
interlock.
Steering unlocked
You will find that it is often easier to turn the
ignition key from position0 to 1 if yo u m ove the
steering wheel slightly to help disengage the
detent.
Individual electrical equipment and accessories
are available for use.
Ignition switched on
All systems are operational.
Starting the 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, inhalation of
the hazardous exhaust gases could lead to
unconsciousness and death. The exhaust
gases contain carbon monoxide, an odorless
and colorless, 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 leaving the car with the engine running,
place the transmission in idle or move the
selector lever to position P and apply the park-
ing brake to prevent the car from moving.<
When starting the engine, do not press the
accelerator pedal.
Do not end the starting procedure too early, but
do not continue it for more than 20 seconds.
Release the key immediately when the engine
starts.
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.<
Manual transmission
1.Apply the parking brake.
2.Depress the clutch and shift to idle position.
3.Start the engine.

Reference
At a glance
Controls
Driving tips
Mobility
47
To accelerate using the lever
Press the lever, arrow1, until the desired speed
is reached.
The vehicle accelerates without pressure on
the accelerator pedal. The system stores and
maintains the speed.
To decrease speed
Pull the lever repeatedly, arrow2, until the
desired speed is reached.
Functions are the same as with increasing
speed or accelerating, except the speed is
decreased.
Deactivating cruise control
Tap the lever upwards or downwards, arrow4.
In addition, the system is automatically deacti-
vated:
>When you brake the vehicle
>When you engage the clutch or shift to idle
in cars with manual transmission
>When you select the automatic transmis-
sion's neutral position N
>When you drive faster or slower than the set
speed for a longer period of time, e.g. by
pressing the accelerator pedal
>When the DSC comes on
You can recall the speed last stored.
To recall the stored speed
Briefly press the button, arrow 3. The speed last
stored is achieved again and maintained.
The stored speed is deleted as soon as the igni-
tion is switched off.

Things to remember when driving
74
Things to remember when driving
Break-in procedures
Moving parts need to be given some time until
they can interact smoothly with one another. To
ensure that your vehicle provides maximum
economy throughout a long service life, we
request that you observe the following.
Always obey all official speed limits.
Engine and differential
Up to 1,200 miles/2,000 km
Drive at varying engine and road speeds, but do
not exceed 4,500 rpm or 100 mph/160 km/h.
Refrain from using full throttle and avoid press-
ing the accelerator beyond the kickdown point.
After driving 1,200 miles/2,000 km
Engine and vehicle speeds can be gradually
increased.
Tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac-
tion potential until an initial break-in period has
elapsed. Therefore, drive cautiously during the
first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and rotors. Drive cautiously during this break-in
period.
Clutch
The function of the clutch reaches its optimal
level only after a distance driven of approx.
300 miles/500 km. Shift gears carefully during
the break-in period.
After replacing components
The same break-in procedures should be
observed if any of the components mentioned
above have to be renewed in the course of the
vehicle's operating life.
Saving fuel
The fuel consumption of your vehicle depends
on several factors. You can lower fuel consump-
tion and the environmental impact by taking
certain measures, adjusting your driving style
and having the vehicle serviced regularly.
Remove any unneeded cargo
Additional weight increases fuel consumption.
Remove any mounted parts after you
have finished using them
Remove additional mirrors and the luggage rack
when they are no longer in use. Mounted parts
affect the vehicle's aerodynamics and increase
fuel consumption.
Close both windows
Open windows cause higher air resistance and
thus increase fuel consumption.
Check tire inflation pressure regularly
Check the tire inflation pressure at least twice a
month and before embarking on a long journey,
and correct it if necessary.
Low tire inflation pressure causes higher rolling
resistance and thus increases fuel consumption
and tire wear.
Set off immediately
Do not let the engine warm up while the car is
still standing, but set off immediately at moder-
ate engine speed. This is the fastest way for the
cold engine to reach its operating temperature.

Things to remember when driving
76 pletely lose contact with the road surface, so
that neither the car can be steered nor the brake
be properly applied.<
The risk of hydroplaning increases with declin-
ing tread depth on the tires, refer also to Mini-
mum tread depth on page87.
Driving through water
Drive through water on the road only if it is
not deeper than 1 ft/30 cm, and then only
at walking speed at the most. Otherwise, the
vehicle's engine, the electrical systems and the
transmission may be damaged.<
Moisture inside the vehicle
Make sure that the passenger compart-
ment does not become wet and that liq-
uids are transported in closed containers. Oth-
erwise, moisture could penetrate and damage
electronic components inside the vehicle.<
Use the parking brake on inclines
On inclines, keep the vehicle from rolling
by using the parking brake rather than by
slipping the clutch, which would lead to a high
degree of clutch wear.<
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 at the brake pedal combines with
sounds from the hydraulic circuits to indicate to
the driver that ABS is in its active mode.
Wet roads
When roads are wet or there is heavy rain,
briefly exert gentle pressure on the brake pedal
every few miles. Watch traffic conditions to
ensure that this maneuver does not endanger
other road users. The resulting heat dries the
brake rotors and brake pads. Immediate braking
force is then available if necessary.
Inclines
To prevent overheating and, as a result,
diminished braking effectiveness, drive
down long or steep downhill grades in the gear
that requires the least braking. Otherwise, even
light but consistent pedal 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 page43.
Never drive with the clutch held down,
with the transmission in idle 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
Limited vehicle use, extended periods with the
vehicle parked or in storage, and operating con-
ditions in which braking is restricted to gentle,
low-pressure applications will all increase the
tendency for corrosion to form on the rotors and
contamination to accumulate on the brake
pads. This occurs because the minimal pres-
sure which must be exerted by the pads to
clean the rotors by brake applications is not
reached.
If the brake rotors are corroded, they will tend to
respond to braking with a pulsating effect which
even extended application will fail to cure.
Brake pads
The warning lamp lights up. The brake
pads have worn down to the minimum
safe limit. Have the brake pads
replaced as soon as possible.

Reference
At a glance
Controls
Driving tips
Mobility
107
engine is cold. It is recommended to start the
engine using jumper cables, refer to
page104.<
1.Switch on hazard warning flashers, comply
with local regulations.
2.Turn the key to position 2.
3.Shift into 3rd gear.
4.Have the vehicle tow-started with the clutch
depressed and slowly release the clutch.
After the engine starts, immediately
depress the clutch again.
5.Stop at a suitable location, remove the tow
bar or rope and switch off the hazard warn-
ing flashers.
6.Have the vehicle checked.

Reference
At a glance
Controls
Driving tips
Mobility
117
B
Backrests, refer to Seat
adjustment31
Backup lamps
– bulb replacement101
Bandages, refer to First-aid
kit104
Bar, refer to Towing
methods106
Battery102
– charging102
– disposal102
– indicator/warning
lamp12,102
– jump-starting104
– power supply
interruption102
– remote control18
Being towed106
Belts, refer to Safety belts33
Belt tensioner, refer to Safety
belts33
Beverage holders69
Blower, refer to Air flow
rate63,66
BMW Homepage4
BMW Maintenance
System96
Bottle holders, refer to
Beverage holders69
Brake assist, refer to Dynamic
Brake Control DBC51
Brake fluid95
– indicator/warning
lamp13,95
– low level95
Brake Force Display56
Brake hydraulics, refer to
Brake system95
Brake hydraulic system
– indicator/warning lamp13
Brake lamps
– brake force display56
– bulb replacement101
– indicator lamp, defective
bulb13Brake pads76
– break-in procedures74
– warning lamp76
Brake pad wear indicator
– brake pads76
– indicator/warning lamp13
Brake rotors76
– brakes76
– break-in procedures74
Brakes
– ABS51
– brake fluid95
– brake pads
76
– braking safely76
– break-in procedures74
– indicator/warning
lamps13,52
– parking brake41
Brake system95
– brake fluid95
– brake pads76
– break-in procedures74
– disc brakes76
– indicator/warning lamp13
Breakdown service, refer to
Roadside Assistance103
Breaking in the clutch74
Breaking in the differential,
refer to Engine and
differential74
Break-in procedures74
Bridging, refer to Jump-
starting104
Bulb changing, refer to Lamps
and bulbs98
Bulb replacement, refer to
Lamps and bulbs98
Buttons on the steering
wheel11
C
California Proposition 65
warning5
Can holders, refer to Beverage
holders69
Capacity
– cargo bay, refer to
Weights113Car battery, refer to Vehicle
battery102
Car care, refer to the Caring
for your vehicle brochure
Care, refer to the Caring for
your vehicle brochure
Care products, refer to the
Caring for your vehicle
brochure
Cargo bay23
– capacity113
– emergency release23
– floor panel98
– increasing capacity23
– opening and closing21,22
– opening from inside the
vehicle21,22
– opening from the outside21
– roll-up cover70
Cargo loading
– stowing cargo77
– vehicle77
Car jack
– jacking points102
Car keys, refer to The key
set18
Carpet care, refer to the
Caring for your vehicle
brochure
Car phone, refer to the
separate Owner's Manual
Car radio, refer to the separate
Owner's Manual
Car wash, refer to the Caring
for your vehicle brochure
Catalytic converter, refer to
Hot exhaust system75
CD changer, refer to Owner's
Manual for Radio/Onboard
Computer
CD operation, refer to Owner's
Manual for Radio/Onboard
Computer
Center console, refer to
Around the center
console14
Center high-mount brake
lamp, bulb replacement101