engine BMW Z8 2001 Owner's Manual

74n
Heating and ventilation/Air conditionerAir supply
You can select blower speeds
from 1 to 4. The higher the
setting, the greater the
amount of heat and air supply.
In position 0, the blower, heating and air
conditioner are switched off.
Temperature
In order to increase the inte-
rior temperature, turn to the
right. For rapid heating, turn
completely to the right. Then
select an interior temperature that is
comfortable for you.
Air distribution
You can direct the airflow onto
the windows , toward the
upper body and into the
footwell . You can also make
all intermediate settings. The "6 o'clock"
setting is recommended for normal
conditions (refer also to the illustration
and overview on page 72).
Recirculated air mode
If there are unpleasant odors
in the incoming air, you can
temporarily block the air
supply. The system then recir-
culates the air already within the
vehicle.
If condensation starts to form on
window surfaces during opera-
tion in the recirculated-air mode, switch
it off and return the ventilation system
to the incoming air mode; turn up the
blower and select the defroster if
necessary to clear the windows.<
Incoming air mode
Recommended when driving
with the convertible top open.
The degree to which the
passenger compartment is
heated depends on temperature selec-
tion and air distribution.
Air conditioner/incoming air mode
The air is cooled and dehu-
midified and Ð depending on
the temperature setting Ð
warmed again when the air
conditioner is switched on. Depending
on the weather, the windshield may fog
over briefly when the engine is started.
Do not turn on the air conditioner if the
outside air temperature is below
approx. 41 7 (5 6). This will help to
prevent the windows from fogging.
If the windows fog over after switching
the air conditioner off, switch it back on.
Air conditioner/Recirculated air
mode
You may find it useful to acti-
vate both systems to cool the
car more rapidly after it has
been parked with the top up
on a hot day. This setting provides the
coldest possible airflow from the vent
outlets (with temperature selection
switch turned all the way to the left).

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
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IndexDataTechnologyRepairsCar careControlsOverview
Car care Special operating instructions:
Break-in procedures86
Driving notes87
Catalytic converter87
Antilock Brake System (ABS)88
Dynamic Brake Control
(DBC)90
Disc brakes90
Brake system91
Winter operation92
Power steering94
Cellular phone94
Radio reception94
Wind deflector95
Hardtop96
Wheels and tires:
Tire inflation pressure98
Tire condition98
Tire replacement99
Tire rotation100
Wheel and tire
combinations101
Special features of winter
tires102
Snow chains102
Approved wheel and tire
specifications103Under the hood:
Hood104
Engine compartment106
Washer fluids108
Washer nozzles108
Engine oil109
Coolant111
Brake fluid112
Vehicle Identification
Number113
Maintenance and care:
The BMW Maintenance
System114
Caring for your vehicle115
Airbags121
Vehicle storage122
Laws and regulations:
Technical modifications123
California Proposition 65
Warning123
OBD interface socket124

86n
To ensure that your vehicle continues to
provide maximum economy throughout
an extended service life, we request
that you devote careful attention to the
following section.
Your BMW Z8 is a masterpiece of
superlative technology. To ensure
that you derive maximum satisfaction
from its extensive array of advanced
features while simultaneously creating
the basis for many years of driving
pleasure, we urge you to observe the
following precautions during the initial
operation period.<
Engine and differentialUp to 1,200 miles (2,000 km):
Drive at varying engine and road
speeds, but do not exceed 4,500 rpm
(4,500/min), or a road speed of 106 mph
(170 km/h).
Obey your local and state maximum
speed limits.
Avoid depressing the accelerator to the
full-throttle position .
Once you have driven 1,200 miles
(2,000 km), you can begin to gradually
increase both the engine speed and
road speed.
You should also comply with these
break-in procedures if the engine or
differential is replaced later in the
course of the vehicle service life.TiresOwing to technical factors associated
with their manufacture, tires do not
achieve their full traction potential until
an initial break-in period has elapsed.
Thus, drive with extra care during the
initial 200 miles (300 km).
Obey your local and state maximum
speed limits.
When the vehicle is being driven
on wet or slushy roads, a wedge
of water may form between the tire and
the road surface. This phenomenon is
referred to as "aquaplaning" and can
lead to partial or complete loss of trac-
tion, vehicle control and braking effec-
tiveness. Reduce your speed on wet
roads.<
Brake systemApproximately 300 miles (500 km) must
elapse before the brake pads and
rotors achieve the optimal pad-surface
and wear patterns required for trouble-
free operation and long service life.
To break in the separate parking brake
drums, apply the parking brake lightly
when coasting to a standstill (at a traffic
signal, for instance), provided that
traffic conditions allow you to do so.
To avoid corrosion, repeat this proce-
dure from time to time.
The brake lamps do not come
on when the parking brake is
engaged.
Vacuum for the brake system servo unit
on your BMW is available only when the
engine is running. When you move the
vehicle with the engine shut off Ð when
towing, for instance Ð substantially
higher levels of pedal force will be
required to brake the vehicle. optimally after about 300 miles (500 km).
Engage the gears carefully and without
high engine speeds during this break-in
period.
Break-in procedures

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IndexDataTechnologyRepairsCar careControlsOverview
Brakes:
Do not rest your foot on the brake
pedal while driving. Even light but
consistent pressure on the brake pedal
could lead to high temperatures, brake
wear, and possibly, to brake system
failure.
Aquaplaning:
Reduce speed while driving on wet or
slushy roads, otherwise, a wedge of
water can form between the tires and
the road surface. This phenomenon is
referred to as "aquaplaning" or "hydro-
planing." It is characterized by a partial
or complete loss of contact between
the tires and the road surface. The ulti-
mate results are loss of steering and
braking control.
Driving through water:
When there is water on the roads, do
not drive in it if it is deeper than 1 ft
(30 cm), and even then, only at walking
speed, otherwise the vehicle can
sustain damage to the engine, the elec-
trical systems and the transmission.<
The catalytic converter reduces harmful
exhaust emissions.
It is designed for use with unleaded fuel
only. Even minute quantities of lead
would be enough to permanently
damage both the catalytic converter
and the system oxygen sensor.To ensure efficient, trouble-free engine
operation and to avoid potential damage:>Be sure to comply with the scheduled
maintenance requirements
>Fill the fuel tank well before it is empty
>Tow-start only when the engine is
cold. If you attempt to tow-start with
a warm engine, unburned residual
fuel in the catalytic converter could
ignite and cause damage. It is better
to start the vehicle with a battery
charger or assistance from another
vehicle
>Avoid other situations where the fuel
is either not burned or burns incom-
pletely, such as engaging the starter
frequently or for extended periods, or
repeated start attempts in which the
engine does not start (stopping and
restarting an engine which is running
properly does not present a pro-
blem). Never allow the engine to run
with any of the spark plug cables
disconnected.Be sure to comply with the
instructions above to prevent
unburned fuel from reaching the cata-
lytic converter. Otherwise, there is the
danger of overheating and damage to
the catalytic converter.
Extreme temperatures are present with
the catalytic converter both on this and
every catalytic converter-equipped
vehicle. Heat shields are installed adja-
cent to some sections of the exhaust
system. Never remove these shields;
do not apply undercoating to their
surfaces. When driving, standing at
idle, and parking the vehicle, take care
to avoid contact between the exhaust
system and flammable materials (grass,
hay, leaves etc.). Such contact could
start a fire, resulting in serious personal
injury and property damage.<
Driving notes Catalytic converter

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IndexDataTechnologyRepairsCar careControlsOverview
Antilock Brake System (ABS)Information for your safetyNot even ABS can suspend the laws
of physics. The consequences of brake
applications with inadequate clear-
ances for safety between vehicles,
excessive speed or if aquaplaning
occurs are always the responsibility of
the driver. You should never allow the
added safety of ABS to mislead you into
taking risks of any kind.
Do not make any modifications
to the ABS system.
Service procedures on ABS are to be
performed by authorized technicians
only.<
In case of a system malfunction
If the ABS warning lamp comes
on, refer to page 21. The brake
system will then function the
same as on vehicles without
ABS. However, have the brake
system checked by your BMW
center as soon as possible. To prevent
undetected defects and cumulative
faults from adversely affecting the brake
system, refer any problems to your
BMW center at the earliest opportunity.
Cornering Brake Control (CBC)CBC is an advanced ABS engineering
design. Vehicle stability is also
enhanced when braking during
cornering at a higher rate of lateral
acceleration and during lane changes.

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IndexDataTechnologyRepairsCar careControlsOverview
Disc brakes Brake systemDriving notesWhen driving in heavy rain and on wet
roads it is advisable to apply light pres-
sure to the brake pedal every few miles.
Monitor traffic conditions to ensure that
this maneuver does not pose a hazard
to you or to other road users. The heat
generated in this braking process helps
dry the pads and rotors.
Maximum braking force is obtained
while the wheels are not locked, but
rather when they are still barely turning
immediately prior to locking. ABS main-
tains this state automatically. If the ABS
fails, you should revert to the staggered
braking technique (refer to page 93).
When descending steep hills and
extended grades, downshift to a gear
that will allow you to continue safely
with only a minimal amount of braking.
By minimizing the loads placed on the
brake system, this strategy helps
ensure that optimal brake system
response will remain available at all
times.
You can enhance the engine's braking
effect by engaging a lower gear, down-
shifting as far as first gear when
descending extremely steep slopes. Even if engine braking fails to slow the
vehicle sufficiently, you should still
make every effort to avoid prolonged
braking with continuous application of
low to moderate pressure at the pedal.
It is better to decelerate the vehicle by
applying a higher level of force at the
pedal (watch following traffic!) and then
subsequently pausing to allow the
brakes to cool briefly before starting on
your next braking cycle. By protecting
brake system components against
overheating, the cooling phases
afforded by this staggered, or intermit-
tent braking technique help maintain
consistent availability of optimal braking
response when it is needed.
Do not coast with the clutch
depressed, the gear-shift lever in
neutral, or, above all, with the engine
off; otherwise, the engine will provide
no braking effect if the transmission is
in neutral, and there is no braking or
steering power assist if the engine is
not running. Never allow floor mats,
carpets or any other objects to obstruct
the accelerator, clutch or brake pedals
and pose a safety hazard by reducing
their available travel range.<
Brake fluid level
The brake warning lamp comes
on with the parking brake
released:
The brake fluid level in the reser-
voir is too low, refer to page 112.
If the brake fluid level is too low
and brake pedal travel has become
noticeably longer, there may be a
defect in one of the brake system's
hydraulic circuits.
Proceed to the nearest BMW
center. Higher brake application
pressure may be necessary under these
conditions, and brake pedal travel may
be significantly longer. Please
remember to adapt your driving style
accordingly.<

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IndexDataTechnologyRepairsCar careControlsOverview
Winter operationDriving on low-traction road
surfacesDo not activate the Sport mode (refer to
page 66). Use smooth, gentle pressure
to control the accelerator pedal. Avoid
excessive engine speeds and upshift
early. Downshift well in advance when
approaching uphill or downhill
grades. Maintain an adequate distance
between yourself and the vehicle
ahead.BrakesWinter road conditions substantially
reduce the amount of traction available
between the tires and the road surface.
The resulting increases in braking
distance are considerable and should
be kept in mind at all times.
ABS is intended to prevent the wheels
from locking during brake applications,
thus helping to maintain vehicle stability
and steering response.If the ABS does not respond in a critical
braking situation and the wheels lock,
reduce the pressure on the brake pedal
until the wheels just start to roll again
while still maintaining enough force to
continue braking.
Then increase the pressure, reduce the
pressure when the wheels lock, reapply
pressure etc.
This staggered braking procedure will
reduce braking distances while helping
you maintain steering control.
You can always then attempt to steer
around hazards after you have reduced
pressure on the brake pedal.
Never downshift to exploit engine
braking when driving on slippery
road surfaces, as this could lead to a
loss of traction at the rear wheels,
impairing your ability to control the
vehicle.<
Depress the clutch during hard
braking on road surfaces that
provide only poor or uneven traction.<
Skid control Depress the clutch and release the
accelerator pedal. Countersteer care-
fully and attempt to regain control of the
vehicle.ParkingEngage first or reverse gear. Depending
on the steepness of the incline, you can
apply the parking brake as well. In order
to prevent the parking brake pads from
locking due to frost or corrosion, dry
them by gently applying the parking
brake as the vehicle is coming to a stop.
Make sure that following traffic is not
endangered.
The brake lamps do not come
on when the parking brake is
engaged.<

104n
Never attempt to carry out service
or repair operations on your
vehicle if you do not have the required
technical background. Always switch
off the engine and allow it to cool down
before working in the engine compart-
ment. Always disconnect the battery
before working on any electrical
systems or equipment, especially when
these are located within the engine
compartment. Comply with all appli-
cable instructions and safety precau-
tions. Failure to work in an informed,
professional manner when servicing
components and materials constitutes
a safety hazard for vehicle occupants
and other road users. If you are not
familiar with official servicing proce-
dures, please have the work performed
by your BMW center.<
To release
Pull the lever located under the left-
hand side of the instrument panel. 520de084
To open
Press the release handle upward and
open the hood.520de153
Hood

106n
Engine compartment
520de155

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IndexDataTechnologyRepairsCar careControlsOverview
Engine compartment 1 Brake fluid reservoir112
2 Auxiliary terminal for jump
starting143
3 Coolant expansion tank111
4 Engine oil filler neck109
5 Engine oil dipstick109
6 Reservoir for windshield and
headlamp washer system108