BMW Z4 ROADSTER 2.5I 2005 E85 Owners Manual

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89
Maintenance
The BMW Maintenance
System
The BMW Maintenance System helps maintain
the road safety and operating reliability of your
BMW.
Please keep in mind that regular maintenance is
not only necessary for the safety of your vehi-
cle, but also plays a significant role in maintain-
ing the resale value of your vehicle.
Service interval display
While conventional systems rely on distance
traveled alone to determine when a service is
due, the BMW Maintenance System has taken
the actual conditions under which the vehicle is
operated into consideration for years, because
miles can be traveled in many different ways:
From a maintenance point of view,
60,000 miles/100,000 km accumulated in
short-distance urban driving are not the same
as 60,000 miles/100,000 km accumulated at
moderate cruising speeds in long-distance
highway travel.
The BMW Maintenance System includes the
Engine Oil Service and Inspections I and II.
Determining the maintenance intervals based
on the actual loads on the vehicle covers every
kind of operating situation. Minimal use drivers,
who drive fewer than about 6,200 miles/
10,000 km per year, should nevertheless have
the oil changed at least every 2 years since
engine oil deteriorates over time, regardless of
use.
Service and Warranty Information
Booklet for US models, Warranty and
Service Guide Booklet for Canadian
models
For additional information on required mainte-
nance intervals and procedures, please refer to
the Service and Warranty Information Booklet
for US models, or the Warranty and Service
Guide Booklet for Canadian models.
Depending on operating conditions, it may be
advisable to have the body checked for damage
from rocks or gravel as a precaution against cor-
rosion.
BMW recommends that you have your
BMW center perform the maintenance
and repair.
Be sure that all maintenance work is recorded in
the Service and Warranty Information Booklet
for US models, Warranty and Service Guide
Booklet for Canadian models. These entries will
serve as proof that the vehicle has received reg-
ular maintenance.<

Maintenance
90
OBD interface socket
The Onboard Diagnostic OBD interface socket
is located on the left of the driver's side under
the instrument panel and under a cover.
The cover has the letters OBD on it.
The purpose of the OBD system is to ensure
proper operation of the emission control sys-
tem for the vehicle's lifetime.
The system monitors emission-related compo-
nents and systems for deterioration and mal-
function.
If the Service engine soon indicator
lamp comes on either continuously or
intermittently, this indicates a fault in
the emission-related electronic systems.
Although the vehicle remains operational, you
should have the systems checked by your
BMW center at the earliest possible opportu-
nity.
The illuminated indicator informs you of the
need for service, not that you need to stop the
vehicle. However, the systems should be
checked by your BMW cente r a t t h e n e x t o p p o r -
tunity.
If the indicator blinks or flashes, this indicates a
high level of engine misfire. Reduce speed and
contact the nearest BMW center immediately.
Severe engine misfiring over even a short
period of time can seriously damage emission
control system components, especially the cat-
alytic converter.Indication of the above-described mal-
function in Canadian models.
If the gas cap is not on tight enough, the
OBD system can detect leaking vapor
and the indicator will light up. If the gas cap is
then tightened, the indicator will usually go out
after a short period of time.<
Event Data Recorders
Your vehicle may be equipped with one or more
sensing and diagnostic modules or a recording
device capable of recording or transmitting cer-
tain vehicle data or information. In addition, if
you have a Subscription Service Agreement for
the BMW Assist system, certain vehicle infor-
mation may be transmitted or recorded in order
to provide such services.
Care
Interesting facts about the care of your vehicle
are found in the Caring for your vehicle bro-
chure.

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Replacement procedures
Onboard tool kit
The onboard tool kit is stored in a tool pouch. It
is located in the luggage compartment beneath
the floor panel.
Windshield wiper blades
1.Swich off the ignition
2.Fold the wiper arm completely out from the
windshield
3.Place the wiper blade in a position at right
angles to the wiper arm
4.Press the locking spring
5.Fold the wiper blade down and unhook it
toward the windshield
6.Pull the wiper blade past the wiper arm
toward the top
7.Insert a new wiper blade and apply pressure
until you hear it engage.
Lamps and bulbs
The lamps and bulbs make essential contribu-
tions to the safety of your vehicle. Therefore,
comply fully with the following instructions dur-
ing bulb replacement. If you are not familiar with
the procedures, BMW recommends that you
have your BMW center carry out the work.
Do not touch the glass portion of a new
bulb with your bare hands since even
small amounts of impurities burn in to the sur-
face and reduce the service life of the bulb. Use
a clean cloth, paper napkin or a similar material,
or hold the bulb by its metallic base.<
A replacement bulb set is available from your
BMW center.
Before working on the electrical system,
switch off the electrical accessory you are
working on or disconnect the cable from the
negative terminal of the battery. Failure to
observe this precaution could result in short cir-
cuits.
To prevent injuries and damage, always comply
with any instructions provided by the bulb man-
ufacturer.<
Accessing the headlamps
Protective cover in the wheel well
To gain access to the headlamp covers, turn the
front wheels in the required direction.

Replacement procedures
92 1.Open the caps with a suitable object, e.g. a
coin or screwdriver
2.Fold up the protective cover in the wheel
well.
Headlamp cover
1.Pull the wire clamp out straight
2.Pull the wire clamp past the catches, see
arrows, and fold it down
3.Flip the headlamp cover open and remove.
Reinstall the headlamp cover carefully. If
it is not on tight, the headlamp installation
could be damaged.<
Reinstall the headlamp cover in reverse order.
Low beams and high beams
Left side of engine compartment:
1Low beams
2High beams
H7 bulb, 55 watts
The H7 bulb is pressurized. Therefore,
wear safety glasses and protective
gloves. Failure to comply with these precau-
tions could result in physical injury if the bulb is
damaged.<
1.Turn the bulb holder to the left and pull out
2.Remove and replace the bulb
3.Install in the reverse order.
When cleaning the headlamps, please
observe the instructions in the Caring for
your vehicle brochure.<
Xenon lamps*
The service life of these bulbs is very long and
the probability of a failure is very low, provided
that they are not switched on and off an unusual
number of times. If one of these bulbs should
nevertheless fail, it is possible to continue driv-
ing with great caution using the fog lamps, pro-
vided traffic laws in your area do not prohibit
this.
Because of the extremely high voltages
involved, any work on the xenon lighting
system, including bulb-changing, should be
carried out by technically qualified personnel
only. Otherwise, there is a risk of fatal injury.<

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Front turn signal indicators
21 watt bulb
1.Insert a Phillips-head screwdriver from the
onboard toolkit into the appropriate open-
ing, arrows1
2.Turn the screwdriver to the left, arrows2
3.Use the Phillips-head screwdriver to pull
out the entire bulb holder
4.Replace the bulb
5.Install in the reverse order.
Side turn signal indicators
5 watt bulb
1.Turn the lamp to the left and remove
2.Apply gentle pressure to the bulb while
turning it to the left to remove
3.Install in the reverse order.
Rear lamps
Tail lamps1: 21/4 watt bulbs
Remaining bulbs: 21 watt
1Tail lamp/brake lamp, red
2Turn signal indicator, yellow
3Backup lamp, white
On the right-hand side of the luggage compart-
ment:
1.Remove the cover by turning the lock to the
right; refer to the detail in the illustration
2.Applying light pressure, turn the bulb to the
left. Remove and exchange the bulb
3.Reinstall the cover.
Center high-mount brake lamp
The LED strip is in the luggage compartment
lid.

Replacement procedures
94 Please contact a BMW center in case of a mal-
function.
License plate lamps
5 watt bulb
1.Push out the lamp with a suitable object and
remove it
2.Replace the bulb.
Snap the lamp back into place.
Light-emitting diodes LEDs
Control elements, display units and other inte-
rior equipment in your vehicle use a light-emit-
ting diode behind a cover as a light source.
These light-emitting diodes are similar to con-
ventional lasers.
Do not remove the covers, and do not
look directly at the unfiltered light for sev-
eral hours. Otherwise, it can lead to retinal irrita-
tion of the eye.<
Changing a wheel
Run Flat tires
Your BMW is equipped with Run Flat tires.
Therefore, the wheel no longer has to be
changed immediately in the event of a loss in
inflation pressure.
Run Flat tires are labeled on the sidewall with a
circular symbol containing the letters RSC.
Refer to page82.
BMW recommends that you consult your BMW
center if you wish to replace the tires of your
B MW , o r change from summe r to winter tire s o r
vice versa.
Your BMW center knows how to work with Run Flat tires and is equipped with the necessary
special tools.
When mounting or replacing summer
tires with winter tires, or vice versa, use
only Run Flat tires since no spare wheel is avail-
able in the event of a flat.<
Jacking points
The jacking points are located at the positions
indicated in the illustration.
Your BMW center can provide you with a
suitable jack as an accessory.<
Vehicle battery
Maintenance
The battery is completely maintenance-free.
This means that the original electrolyte will nor-
mally last for the service life of the battery under
moderate climatic conditions. Your BMW cen-
ter will be happy to advise you if you have any
questions concerning the battery.
Indicator lamp
The indicator lamp lights up:
The battery is no longer being charged.
The alternator drive belt is defective or
there is a malfunction in the charging circuit of
the alternator. Please contact the nearest BMW
center.
If the drive belt is defective, pull over and
switch off the engine immediately to pre-
vent overheating and serious engine damage.
If the onboard supply voltage drops to a very
low level, increased steering effort may also be
necessary.<

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Charging the battery
Charge the battery in the vehicle only when the
engine has been switched off. Terminals, refer
to Jump starting, page97.
Battery disposal
After changing a battery, have the used
battery disposed of by your BMW center
or bring it to a recycling point. Maintain the bat-
tery in an upright position for transport and stor-
age. Secure the battery against tilting when
transporting.<
Power loss
After a temporary power loss, e.g. due to a dis-
charged battery, some equipment will be lim-
ited in its use and must be reinitialized. Individ-
ual settings are also lost and must be reset:
>Seat memory
The positions must be stored again, refer to
page29
>Time
must be reset, refer to page47.
Fuses
You will find the fuses and information on their
respective allocation behind the glove compart-
ment.
1.Open the glove compartment
2.Press the lock on the left; see arrow1
3.Press the lock on the right; see arrow2
4.Swing the glove compartment down.Spare fuses and plastic tweezers for grasping
the fuses are found in the onboard tool kit; refer
to page91.
Do not attempt to repair a burned fuse or
replace it with a fuse having a different
color or amperage rating. To do this could
cause a fire in the vehicle as a result of circuit
overload.<

Giving and receiving assistance
96
Giving and receiving assistance
Receiving assistance
The BMW Group's Mobile Service offers you
24-hour assistance in the event of a breakdown,
even on weekends and holidays.
The telephone number of the Mobile Service
control center in your country is listed in the
Contact brochure.
If your vehicle has the necessary equipment,
you can contact the Mobile Service or issue an
emergency call using buttons in the center con-
sole, behind the parking brake under a cover.
When the emergency call is initiated, a tele-
phone connection is established with the BMW
Assist response center.
If your vehicle is equipped with an activated
BMW Assist and the current location of the
vehicle can be determined, this location is
transmitted to the BMW Assist response cen-
ter.
Requirements for initiating an emergency call or
contacting Mobile Service:
>Ignition key in position 1 or higher
>The car phone must be registered with a
mobile network
>The emergency call system must be opera-
tional.
Access to the buttons
Fold up the cover.
1Emergency call
2Roadside Assistance
Initiating an emergency call*
Press button1 for at least 2 seconds.
The indicator lamp in the button lights up. As
soon as a telephone connection to the BMW
Assist response center has been set up, the
indicator lamp flashes.
If the indicator lamp is flashing but you cannot
hear the emergency call center, you may still be
heard by the emergency call center.
For technical reasons, the emergency call
function cannot be guaranteed in certain
unfavorable conditions.<
If certain requirements are met, an emergency
call is automatically initiated after a serious
accident. The automatic emergency call will not
be hindered by pressing the button.
Roadside Assistance*
Press button2 for at least 2 seconds.
The indicator lamp in the button lights up. As
soon as a telephone connection to the Road-
side Assistance has been set up, the indicator
lamp flashes.
Depending on the country you are in, your vehi-
cle's current location will also be transmitted if
your vehicle is equipped with an activated BMW
Assist function.
Warning triangle*
The warning triangle is stored in the rear lug-
gage compartment panel.

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Pull the ends of the rubber bands upward and
out of the fasteners.
Always observe all legal regulations
requiring a warning triangle to be carried
in the vehicle.<
First-aid kit*
The first-aid kit is located beneath the passen-
ger seat.
To open
Pull the handle and fold the cover downward.
To close
Fold the cover up and engage the catch.
Some of the articles in the first-aid kit
have a limited period of use before expira-
tion. For this reason, check the expiration dates
of each of the items regularly, and replace any
with passed dates. These items can be pur-
chased in any drugstore or pharmacy.
Always observe all legal regulations requiring a
first-aid kit to be carried in the vehicle.<
Jump-starting
When your battery is discharged you can use
two jumper cables to start your vehicle with
power from the battery in a second vehicle. You
can also use the same method to help start
another vehicle. Always use jumper cables with
fully insulated handles on the terminal clamps.
Do not touch components carrying cur-
rent on a running engine. Contact with
these components can cause fatal injury. Care-fully observe the following instructions to avoid
personal injury and/or damage to one or both
vehicles.<
Preparations
1.Check whether the battery of the support
vehicle has 12 volts and approximately the
same capacity – measured in Ah. This infor-
mation is provided on the battery
2.Stop the engine of the support vehicle
3.Switch off all electrical accessories in both
vehicles.
Make absolutely certain that there is no
contact between the bodywork of the two
vehicles: short circuit hazard.<
Connecting jumper cables
Always adhere to this sequence when
connecting jumper cables; failure to
observe this procedure can lead to sparks at the
battery terminals and pose an injury hazard.<
The auxiliary jump-starting terminal located in
your BMW's engine compartment acts as the
positive battery terminal. Refer to the engine
compartment overview on page85. The cover
is marked with a+.
1.Open the cover of the BMW auxiliary jump-
starting terminal. Do so by pulling the tab
2.With the + jumper cable, connect the posi-
tive terminal of the drained battery and the
positive terminal of the support battery.
To do this:
Connect one terminal clamp to the positive
terminal of the battery or to an auxiliary
jump-starting terminal of the support vehi-
cle.
Connect the second terminal clamp to the

Giving and receiving assistance
98 positive terminal of the battery or to an aux-
iliary jump-starting terminal of the vehicle to
be jump-started.
Your BMW is equipped with a special nut,
refer also to the engine compartment over-
view on page85
3.With the– jumper cable, connect the nega-
tive terminals of both vehicles.
To do this:
Attach one cable clamp to the negative bat-
tery terminal or to a suitable ground on the
engine or body work of the support vehicle.
Attach the second cable clamp to the nega-
tive battery terminal or to a suitable ground
on the engine or body work of the vehicle to
be jump-started.
Starting the engine
1.Start the engine of the support vehicle and
let it run for several minutes at a slightly ele-
vated engine idle speed
2.Start the engine of the other vehicle as
usual.
If the first start attempt is not successful,
wait a few minutes before another attempt
in order to allow the discharged battery to
recharge
3.Allow the engines to run for several minutes
4.Then disconnect the jumper cables in
reverse sequence
5.Depending on the cause of the fault, have
the battery checked and recharged.
Never use spray starter fluids to start the
engine.<
Towing and tow-starting the
vehicle
Using the towing eyelet
The screw-in towing eyelet is stored in the
onboard tool kit; be sure that it remains in the
vehicle at all times. It can be attached at the
front or rear of your BMW.
Observe the following instructions in
order to avoid damaging the towing eye-
let or the vehicle: use only the towing eyelet
supplied with the vehicle, and screw it in firmly
until it stops. Use the towing eyelet for towing
on paved roads only. Avoid subjecting the tow-
ing eyelet to lateral loads, e.g. do not lift the
vehicle using the towing eyelet.<
Access to the threaded socket
Press out the cover with a screwdriver inserted
in the recess at the top.
Being towed
Make sure that the ignition key is in posi-
tion 1, because the steering lock could
otherwise engage and the vehicle could no
longer be steered. There is no power assist
while the engine is off. Therefore, you will need
to exert more force to brake and steer the vehi-
cle.<
Turn on the hazard warning flashers, if required
by national regulations. If the electrical system
has failed, clearly identify the vehicle being
towed, e.g. by placing a sign or a warning trian-
gle in the rear window.
Vehicles with manual transmission
Gearshift lever in idling position.