BMW 1999-2005 M3 Manual de usuario

010-2

How to Use This Manual

WARNING!

Your common sense and good

judgment are crucial to safe and

successful service work. Read

procedures through efore starting

them. Think a out whether the

condition of your car, your level of

mechanical skill, or your level of

reading comprehension might result

in or contri ute in some way to an

occurrence that might cause you

injury, damage your car, or result in

an unsafe repair. If you have dou ts

for these or other reasons a out your

a ility to perform safe repair work on

your car, have the work done at an

authorized BMW dealer or other

qualified shop.

The manual is divided into ten sections:

0 GENERAL DATA AND

MAINTENANCE

1 ENGINE

2 TRANSMISSI N

3 SUSPENSI N, STEERING AND

BRAKES

4 B DY

5 B DY EQUIPMENT

6 ELECTRICAL SYSTEM

7 EQUIPMENT AND

ACCESS RIES

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ELE ELECTRICAL WIRING

DIAGRAMS

BD N B ARD DIAGN STICS

0 GENERAL DATA AND

MAINTENANCE covers general vehicle

information (Repair Group 010) as well

as the recommended maintenance

schedules and service procedures to

perform BMW scheduled maintenance

work (Repair Group 020).

The next seven sections (Repair

Groups 1 through 7) are repair based

and organized by three digit repair

groups. Most major sections begin with

a General repair group, e.g. 100

Engine–General. These “00” (double

zero) groups are mostly descriptive in

nature, covering topics such as theory

of operation and troubleshooting. The

remainder of the repair groups contain

the service and repair information. The

last two major sections contains

detailed electrical wiring schematics

and scan tool codes.

A master listing of the individual repair

groups can be found on the inside

front cover. A comprehensive index can

be found at the back of the manual.

Warnings, cautions and notes

Throughout this manual are many

passages with the headings

WARNING, CAUTI N, or N TE. These

very important headings have different

meanings.

WARNING!

The text under this heading warns of

unsafe practices that are very likely

to cause injury, either y direct

threat to the person(s) performing

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the work or y increased risk of

accident or mechanical failure while

driving.

CAUTION!

A caution calls attention to important

precautions to e o served during

the repair work that will help prevent

accidentally damaging the car or its

parts.

Note:

A note contains helpful information, tips

that will help in doing a better job and

completing it more easily.

Please read every WARNING,

CAUTI N, and N TE at the front of

the manual and as they appear in

repair procedures. They are very

important. Read them before you begin

any maintenance or repair job.

WARNING!

Never run the engine in the work

area unless it is well-ventilated.

The exhaust should e vented to

the outside. Car on monoxide

(CO) in the exhaust kills.

Remove all neckties, scarfs,

loose clothing, or jewelry when

working near running engines or

power tools. Tuck in shirts. Tie

long hair and secure it under a

cap. Severe injury can result

from these things eing caught

in rotating parts.

Remove rings, watches, and

racelets. Aside from the

dangers of moving parts,

metallic jewelry conducts

electricity and may cause

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shorts, sparks, urns, or

damage to the electrical system

when accidentally contacting

the attery or other electrical

terminals.

Disconnect the attery negative

(–) ca le whenever working on

or near the fuel system or

anything that is electrically

powered. Accidental electrical

contact may damage the

electrical system or cause a fire.

Fuel is highly flamma le. When

working around fuel, do not

smoke or work near heaters or

other fire hazards. Keep an

approved fire extinguisher

handy.

The fuel system is designed to

retain pressure even when the

ignition is off. When working

with the fuel system, loosen the

fuel lines slowly to allow the

residual pressure to dissipate

gradually. Take precautions to

avoid spraying fuel.

Illuminate the work area

adequately and safely. Use a

porta le safety light for working

inside or under the car. A

fluorescent type light is est

ecause it gives off less heat. If

using a light with a normal

incandescent ul , use rough

service ul s to avoid reakage.

The hot filament of an

accidentally roken ul can

ignite spilled fuel or oil.

Keep sparks, lighted matches,

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and any open flame away from

the top of the attery. Hydrogen

gas emitted y the attery is

highly flamma le. Any near y

source of ignition may cause the

attery to explode.

Never lay tools or parts in the

engine compartment or on top

of the attery. They may fall into

confined spaces and e difficult

to retrieve, ecome caught in

elts or other rotating parts

when the engine is started, or

cause electrical shorts and

damage to the electrical system.

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010-3

Getting Started

Most of the necessary maintenance

and minor repair that an automobile will

need can be done with ordinary tools.

Below is some important information on

how to work safely, a discussion of

what tools will be needed and how to

use them.

Safety

Although an automobile presents many

hazards, common sense and good

equipment can help ensure safety.

Many accidents happen because of

carelessness. Pay attention and stick

to safety rules in this manual.

Lifting the car

The proper acking points should be

used to raise the car safely and avoid

damage. The ack supplied with the car

can only be used at the four side

points (arrows)— ust behind the front

wheels or ust in front of the rear

wheels.

WARNING!

Never work under a lifted car

unless it is solidly supported on

jack stands that are intended for

that purpose.

When raising the car using a

floor jack or a hydraulic lift,

carefully position the jack pad to

prevent da aging the car body.

Plastic pads are provided for

this purpose by the

anufacturer at the jacking

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points.

Watch the jack closely. Make

sure it stays stable and does not

shift or tilt. As the car is raised,

it ay roll slightly and the jack

ay shift.

Raising car safely

- Park car on flat, level surface.

- If changing a tire, loosen lug bolts

before rasing car. See

Changing a tire.

Place ack into position. Make sure ack

is resting on flat, solid ground. Use a

board or other support to provide a firm

surface for the ack, if necessary

- Raise car slowly while constantly

checking position of ack and car.

- Once car is raised, block wheel

that is opposite and farthest from

ack to prevent car from

unexpectedly rolling.

WARNING!

Do not rely on the trans ission

or the e ergency brake to keep

the car fro rolling. They are

not a substitute for positively

blocking the opposite wheel.

Never work under a car that is

supported only by a jack. Use

jack stands that are designed to

support the car. See Tools.

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Working under car safely

- Disconnect negative (–) cable from

battery so that no one can start

car. Let others know what you will

be doing.

CAUTION!

Prior to disconnecting the battery,

read the battery disconnection

cautions given at the front of this

anual on page viii.

- Raise car slowly as described

above.

- Use at least two ack stands to

support car. Use ack stands

designed for the purpose of

supporting a car. For more

information on ack stands, see

Tools.

WARNING!

A jack is a te porary lifting

device and should not be used

alone to support the car while

you are under it.

Do not use wood, concrete

blocks, or bricks to support a

car. Wood ay split. Blocks or

bricks, while strong, are not

designed for that kind of load,

and ay break or collapse.

- Place ack stands on firm, solid

surface. If necessary, use a flat

board or similar solid ob ect to

provide a firm footing.

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- Lower car slowly until its weight is

fully supported by ack stands.

Watch to make sure that the ack

stands do not tip or lean as the

car settles on them.

- Observe all acking precautions

again when raising car to remove

ack stands.

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