2002 BMW Z3 battery replacement

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

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.<

131n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Storing your vehicle5. Fill the fuel tank completely to
prevent the formation of condensa-
tion
6. Increase the tire inflation pressure to
51 psi (350 kPa).Before parking the vehicle for
storage1. Dry the parking brake and footbrake
by brake applications to prevent the
brake rotors and drums from
corroding
2. Park the vehicle in a covered, dry,
and well-ventilated room. Place the
transmission in 1st gear or set the
selector lever to the "P" position.
Chock the wheels to prevent the
vehicle from rolling if necessary. Do
not set the parking brake
3. Remove the battery, charge it
completely and store it in a cool (but
frost-free) room
Z3 roadster:
4. Remove the hardtop
* and store it
separately, refer to page 109
5. Close the convertible top.
During storageRecharge the battery every six months.
If it is not recharged, it will not be
serviceable. Every time the battery is
discharged, especially over extended
periods, its service life is reduced.
Removing the vehicle from
storageRecharge the battery if the "Magic Eye"
turns black, refer to page 154.
Then have Inspection I performed by
your BMW center, including a brake
fluid replacement if necessary, refer to
the Service Manual.

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

137n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Lamps and bulbsThe lamps and bulbs make essential
contributions to the safety of your
vehicle. Therefore, comply fully with the
following instructions during bulb
replacement. If you are not familiar with
any of the procedures, consult your
BMW center.
Do not touch the glass portion of
a new bulb with your bare hands
since even small amounts of impurities
burn in to the surface and reduce the
service life of the bulb. Use a clean
cloth, paper napkin, or a similar mate-
rial, 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 circuits.
To prevent injuries and damage,
comply with any instructions provided
by the bulb manufacturer.<
The illustration depicts the right side
of the engine compartment.1 High beams HB3 bulb, 65 watts2 Low beams HB4 bulb, 55 watts
The bulb is pressurized. There-
fore, wear safety glasses and
protective gloves. Failure to comply
with these precautions could result in
physical injury if the bulb breaks.< 367us067
1. Turn the bulb holder with the bulb to
the left and remove toward the rear
2. Pull off the plug
3. Push the new bulb holder with the
bulb into the plug Ð ensure proper
locking
4. Reinstall in reverse order.
When cleaning the headlamps,
please observe the following:
>Do not wipe dry (this causes
scratches) and never use abrasives
or strong solvents to clean the covers
>Remove dirt and contamination (such
as insects) by soaking with BMW Car
Shampoo and then rinsing with plenty
of water
>Always use a deicer spray to remove
accumulated ice and snow Ð never
use a scraper.<

144n
Remote controlChanging batteryRenew when the LED no longer lights
up when a button is pressed and it is
not possible to lock the vehicle using
the remote key.
Install only a battery of the specification
(CR 2016) indicated in the battery
compartment and make sure that the
battery is installed in the correct posi-
tion.
1. Use a screwdriver to lift the cover at
the recess (arrow)365de017
2. Loosen the two screws (arrows) and
remove the cover.
The battery type and its installation
position are stamped into the base of
the battery compartment.
Return used batteries to a recy-
cling point or your BMW center.< 365de018
New master key with remote
controlIf you place a new master key with
remote control into service (either a
replacement or an additional key), it
must be initialized together with all
existing master keys (with remote
control):
1. Have all existing master keys with
remote control as well as the spare-
or ignition key present, refer to
page 30
2. Enter the vehicle and close the doors
3. Briefly turn the spare key 2 or the
ignition key 3 (max. 5 seconds) to
position 1 in the steering lock, then
return it to position 0365de126

Everything from A to ZAABS (Antilock Brake
System)101
Accessories6
Adaptive Transmission
Control (ATC)62, 164
ADB (Automatic Differential
Braking)74
Adding
brake fluid126t
engine coolant126t
engine oil123t
washer fluid122t
Additional storage areas90
Adjusting
backrest50
mirrors50, 51
seat49
washer nozzles122t
Air conditioner84
Air distribution82, 86
Air outlets80, 84
ventilation85
Air supply82, 86
Air vents80, 84
Airbags21, 54, 164
important safety
notices130
sitting correctly55Antenna107
Antifreeze126
Antifreeze protection,
radiator105, 125
Antilock Brake System
(ABS)101
Anti-theft system32
Approved gross vehicle
weight172
Approved wheel and tire
specifications116
Aquaplaning99, 111
ASC+T (Automatic Stability
Control plus
Traction)73, 165
Ashtray91
ATC (Adaptive Transmission
Control)62, 164
Automatic cruise control67
Automatic Differential
Braking (ADB)74
Automatic rear window
washer65
Automatic Stability Control
plus Traction
(ASC+T)73, 165
Automatic transmission with
Steptronic62
gear indicator68Automatic windshield
washer122
Average fuel
consumption72
Average speed72
BBackrest, adjusting50
Backup lamps61
bulb replace-
ment139t, 140t
Battery153, 174
capacity174
charge condition154
charging154
discharged158
disposal154t
removal and
installation155
Battery change, keys143
Battery charge indicator
lamp20
Battery safety terminal155
Beverage holder91
BMW High Performance
Synthetic Oil124
Brake fluid126
disposal127tBrake hydraulic system20
Brake lamps, bulb replace-
ment139t, 140t
Brake pads22, 104
Brake system103, 104
brake fluid126
fluid level104
winter road
conditions105
Brakes, malfunctions104
Break-in procedure98
Bulb replacement137t
CCalifornia Proposition
65 Warning132
Capacities173
Car jack146t
Car keys30
Car radio
reception107, 166
refer also to the separate
Owner's Manual
Car wash systems, refer to
the "Caring for your
vehicle" manual
From A to Z