2002 BMW Z3 key battery

Contents

Owner service procedures
Advanced technology
Technical data

Replacement procedures:

Onboard tool kit136
Windshield wiper blades136
Lamps and bulbs137
Master key with battery
lamp143
Remote control144
Wheel change146
Battery153
Fuses156

In case of electrical
malfunction:

Power convertible top157
Fuel filler door157

Assistance, giving and
receiving:

Jump-starting158
Towing the vehicle159Adaptive Transmission Control
(ATC)164
Airbags164
Automatic Stability Control plus
Traction (ASC+T)/Dynamic
Stability Control (DSC)165
Car radio reception166
Safety belt tensioner166Engine specifications170
Dimensions171
Weights172
Capacities173
Electrical system174
Drive belts174

20n

Indicator and warning lamps

Technology that monitors itself

Indicator and warning lamps that are
identified by "

l

" are tested for proper
functioning whenever the ignition key is
turned. They each light up once for
different periods of time.
If a fault should occur in one of these
systems, the corresponding lamp does
not go out after the engine is started or
it lights up while the vehicle is moving.
You will see how to react to this in the
following section.

Red: stop immediately

Battery charge current

l

The battery is no longer being
charged. The alternator drive
belt is defective or there is a malfunc-
tion in the charging circuit of the alter-
nator. Please contact the nearest BMW
center.
If the drive belt is defective, stop
and switch off the engine immedi-
ately to prevent overheating and
serious engine damage. If the drive belt
is defective, increased steering effort is
also required.

<


Engine oil pressure

l

Stop the vehicle immediately
and switch off the engine.
Check the engine oil level and top off as
required. If the oil level is correct,
please contact the nearest BMW
center.
Do not continue driving, as the
engine could sustain serious
damage from inadequate lubrication.

<



Brake hydraulic system

l

The brake fluid level is too low.
Before driving further, be sure to
read the notes on pages 104 and 126.
Brake hydraulic system warning
lamp for Canadian models.

30n
Keys1 Master key with battery-powered
lamp (switch on by pressing the BMW
symbol)
2 Master key without lamp
3 Spare key for storage in a safe place
such as your wallet. This key is not
intended for continuous use
4 Door and ignition key
The luggage compartment lid and the
storage boxes
* cannot be opened
with this key Ð this is useful for valet
parking, for instance
365de122
Key with remote control unit
*
1 Master key with remote control unit
2 Spare key for storage in a safe place,
such as in your wallet. This key is not
intended for constant use
3 Door and ignition key
The locks for the luggage compart-
ment lid and the storage boxes
*
cannot be operated with this key Ð
this is useful for valet parking, for
instance.
Some symbols on the remote
control buttons can differ from
those shown in the illustration.<
365de122
Replacement keysare available exclusively through your
BMW center. Your BMW center is obli-
gated to ensure that a person
requesting a key is authorized to do so
since the keys belong to a security
system (refer to "Electronic vehicle
immobilizer" on the next page).
If possible, take all master keys
that belong to the vehicle with you
when you pick up your replacement
keys.
Whenever you receive a new
replacement key, turn that key to
position 2 in the ignition lock once (igni-
tion switched on) and then back. This
allows the electronic vehicle immobi-
lizer to "learn" the new key.<
New master key with remote control,
refer to page 144.

33n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Opening and closing Ð from the outsideWith the remote control
*
The remote control gives you an excep-
tionally convenient method for
unlocking and locking your vehicle.
Furthermore, it provides an additional
function which you can only execute via
the remote control:
>To switch on the interior lamps, refer
to page 34.
With this function, you can also
"search for" the vehicle, when parked
in an underground garage, for
instance.
Whenever you unlock (lock) the vehicle,
you simultaneously deactivate (activate)
the anti-theft system and switch the
interior lamps on (off).
Master keyKeys with remote control units are
master keys, refer to page 30.
Since passengers or animals
remaining in the vehicle might be
able to lock the doors from the inside,
always take the vehicle keys with you
so that the vehicle can be opened again
from the outside at any time.<
Every transmission is indicated by a
light signal. If the signal no longer lights
up when a button is pressed and
locking with the remote control is no
longer possible:
Change the battery, refer to page 144.367de383
To prevent unauthorized use of
the remote control, surrender only
the door and ignition key 3 or the spare
key 2 (refer to page 30) when leaving
the vehicle for valet parking, for
example.
In the event of a system malfunction,
please contact your BMW center. You
can also obtain replacement keys
there.<

59n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Starting the engineBefore starting>Engage the parking brake
>Be sure that the gearshift lever is in
"Neutral" (or the selector lever in "P"
if the vehicle is equipped with auto-
matic transmission)
>Depress the clutch pedal.
Do not run the engine in enclosed
spaces. The exhaust gases
contain carbon monoxide, an odorless
and colorless, but highly toxic gas.
Breathing the exhaust gases poses an
extreme health risk, and can lead to
unconsciousness and death.
Do not leave the vehicle unattended
with the engine running. An unattended
vehicle with a running engine repre-
sents a potential safety hazard.<
Starting the engine>Do not press the accelerator pedal
while starting the engine.
Do not actuate the starter for too
short a time. Do not turn it for
more than approx. 20 seconds. Release
the ignition key immediately after the
engine starts.
Do not allow the engine to warm up
by leaving it running while the vehicle
remains stationary. Instead, begin to
drive immediately at a moderate engine
speed.<
Should the engine fail to start on the
first attempt (if it is very hot or cold, for
instance):
>Press the accelerator pedal halfway
down while engaging the starter.
Cold starts at very low temperatures,
from approx. +5 7 (Ð15 6) and at
altitudes above approx. 3,300 ft
(1,000 m):
>On the first start attempt, engage the
starter for a longer period (approx.
10 seconds).
If these temperature conditions are
anticipated for a longer period, have the
engine oil changed to a special oil, refer
to page 124. Please contact your BMW
center for additional information.
Usually, it is not necessary to depress
the accelerator pedal. However, at high
altitudes or in very hot or very cold
weather, depress the pedal halfway
down when 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 switch off any
accessories which are not required.
Switch off the ignition when the vehicle
is not being driven.

78n
Reading lampsThe Z3 coupe is equipped with reading
lamps:
1 Continuously on
2 Continuously off
3 Automatically controlled367de618
Z3 cou
pe
In order to conserve the battery,
all of the lamps in the vehicle are
switched off about 15 minutes after the
ignition key is turned to position 0.<

Overview
Controls and features
Operation, maintenance
Owner service procedures
Technical data
Index Advanced technology
135n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Replacement procedures:
Onboard tool kit136
Windshield wiper blades136
Lamps and bulbs137
Master key with battery
lamp143
Remote control144
Wheel change146
Battery153
Fuses156
In case of electrical
malfunction:
Power convertible top157
Fuel filler door157
Assistance, giving and
receiving:
Jump-starting158
Towing the vehicle159
Repairs

143n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Master key with battery lampIf light intensity drops, renew the
battery to safeguard against acid
escaping.Battery change1. Remove the cover on the back of the
key with a screwdriver
2. Insert a new battery (refer to the illus-
tration) of the same type (CR 2025)
so that it touches the contacts
3. Snap the cover into place and apply
uniform pressure to seat it.365de132
Return used batteries to a
recycling point or to your BMW
center.<