2001 BMW Z8 steering

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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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Antilock Brake System (ABS) The concept ABS enhances active safety by helping
to prevent the wheels from locking
under braking. Why is this important?
When front wheels lock up and cease
to turn, the tires break into a slide.
Result: the driver loses the ability to
steer the vehicle. Traction loss at the
rear wheels can cause the back end of
the car to slip sideways and break away
in uncontrolled oversteer.
With ABS, you will achieve the shortest-
possible braking distances under all
given conditions (braking while driving
straight ahead or in curves, different
road surfaces).
ABS is designed to meet two essential
requirements during every brake appli-
cation:
>To help provide vehicle stability
>To help retain steering and maneu-
vering capability on all types of road
surfaces (asphalt, concrete, dirt, wet
surfaces, snow and ice).
Braking with ABSThe system is operative once the
vehicle exceeds a speed of approx.
6 mph (10 km/h). The ABS is deacti-
vated whenever the vehicle's speed
drops back below approx. 4 mph
(6 km/h). This means that the wheels
can lock only in the final phase of a
panic stop Ð a factor of no substantive
significance in actual use.
The ABS system works best in situa-
tions requiring maximum pressure on
the pedal (full braking). Since the
vehicle maintains steering responsive-
ness, you can nevertheless avoid
possible obstacles with a minimum of
steering effort.
The ABS system's closed-loop control
circuit cycles in fractions of a second.
A pulsing of the brake pedal, combined
with the sounds associated with the
hydraulic controls, tells you that the
brake system is within its maximum
limit range and reminds you that you
should adapt your vehicle's speed to
road conditions.On road surfaces that have a loose layer
on a firm base (on gravel or snow, for
instance), the braking distances with
ABS may be longer than with the wheels
locked. This also applies for driving with
snow chains. However, ABS continues
to provide enhanced vehicle stability
and steering response under these
conditions.

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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.<

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Power steering Cellular phone Radio reception If there is a change in steering response
Ð e. g. difficult or over-responsive
steering Ð at increasing speeds, consult
a BMW center to have it checked.
If the power steering fails,
increased effort will be required to
steer the vehicle.<
Mobile communications systems
(cellular phone, radio, etc.) are
permitted with an output of up to 10
watts only. Mobile communications
devices not specifically designed for
use in your vehicle may trigger malfunc-
tions while you are operating your
vehicle. BMW can neither test nor
assume responsibility for every indi-
vidual product being offered on the
market. We recommend that you
consult your BMW center before
purchasing any device of this kind.
To ensure reliable and trouble-free
operation of your BMW, do not use any
cellular phones or other radio devices
where the antenna is located either
inside the passenger compartment or
otherwise not attached to the outside of
the vehicle.
You will find instructions for operating
your cellular phone in the supplemen-
tary Owner's Manual. The reception and sound quality
obtained from mobile radios vary
according to a variety of factors,
including the broadcast range of the
transmitter and the directional orienta-
tion of the antenna. Interference factors
such as high-tension power lines, struc-
tural or natural obstructions can all lead
to unavoidable reception interference,
regardless of how well the vehicle
sound system is operating. Climatic
factors such as intense solar radiation,
fog, rain and snow can also interfere
with reception.
Radio interference can also be caused
by either cellular phones not recom-
mended by BMW or by portable phones.
This phenomenon assumes the form of
a low-pitched hum emanating from the
speaker system.
For information on settings and opera-
tion of your radio, please refer to the
separate Owner's Manual.

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Special features of winter tires Snow chains
*
Choosing the right tireFor winter road driving, BMW recom-
mends winter tires (M+S radial belt
tires). Although all-season M+S tires
provide better winter traction than stan-
dard summer tires with H, V, W and ZR
speed ratings, they generally fail to
provide the same levels of performance
as standard snow tires in winter driving.
In the interests of safe tracking and
steering response, install radial tires
made by the same manufacturer and
with the same tread configuration on all
four wheels if you elect to mount winter
tires.
Use only winter tires with emer-
gency driving characteristics as
there is no spare tire available if you get
a flat tire.
For further information, refer to
page 135.<
Do not exceed specified
maximum speeds
Never exceed the maximum speed
for which winter tires are rated.
Unprofessional attempts by laymen to
service tires can lead to damage and
accidents.
Have this work performed by skilled
professionals only. Your BMW center
will be glad to assist you with both their
expertise and the proper equipment for
your vehicle.<
Tire condition, tire pressureOnce the tread depth on winter tires is
less than 0.16 in (4 mm), they are no
longer suitable for winter road driving,
and in the interest of safety should be
replaced.
Comply with the specified tire inflation
pressures Ð and be sure to have the
wheel and tire assemblies balanced
every time you change the tires.
The use of narrow-link BMW snow
chains is permissible in pairs only on
the rear wheels with winter tires with
tire size 245/45 R 18 96 H. Comply with
all manufacturer's safety precautions
when mounting the chains.
Do not activate the RDW system
while using snow chains.
Malfunction warnings and undetected
losses in pressure are possible when
driving with snow chains.
For further information, refer to
page 67.<

109n
IndexDataTechnologyRepairsCar careControlsOverview
Engine oilChecking the oil level 1 Park the vehicle on a level surface
2 Let the warmed-up engine idle for
about 15 seconds, then turn it off
3 Pull the dipstick out after about
1 minute and wipe it off with a clean
lint-free cloth, tissue, or similar
material
4 Carefully push the dipstick all the way
into the guide tube and pull it out
again
5 The oil level should be between the
two marks on the dipstick.
As with fuel economy, oil consumption
is directly influenced by your driving
style and vehicle operating conditions.520de089
The oil volume between the two marks
on the dipstick corresponds to approx.
1.1 US quarts (1 liter). Do not fill beyond
the upper mark on the dipstick. Excess
oil will damage the engine.520de091
Adding engine oil Wait until the level has dropped to just
above the lower mark before adding oil.
However, never let the oil drop below
the lower mark.
BMW engines are designed to
operate without oil additives; the
use of additives could lead to damage
in some cases. This also applies to the
manual transmission, differential and
the power steering system.<520de090

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IndexDataTechnologyRepairsCar careControlsOverview
Airbags 1 Front airbags on the driver and pas-
senger side
2 Side airbags on the driver and front
passenger sideImportant safety notices
Do not attempt to remove the gas
generators of the airbag restraint
system from the vehicle. Testing and
servicing are to be performed only by
trained technicians.
In the event of a malfunction, deactiva-
tion, or triggered actuation (as a
response to an accident) of the airbag
restraint system, consult your BMW
center for repairs or service operations.
520de021
Do not modify or tamper with either the
wiring or the individual components in
the airbag system. These include the
padded steering wheel hub, the instru-
ment panel, and the side trim panels of
the doors. Never apply adhesive mate-
rials to these components or cover or
modify them in any way. Do not remove
or dismantle the steering wheel your-
self.
To ensure compliance with applicable
safety regulations, have an BMW center
dispose of airbag generators.
Unprofessional attempts to service the
system could lead to failure in an emer-
gency or undesired airbag activation,
either of which could result in personal
injury.<