2003 BMW M3 Service and Repair Manual

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Covers all 2003 M3 trims — Base Convertible 2-Door, Base Coupe 2-Door ·
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2003 BMW M3 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • Base Convertible 2-Door
  • Base Coupe 2-Door

Engines covered

  • 3.2L 3246CC l6 GAS DOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #03V16000029/04/2003Component: VISIBILITY:POWER WINDOW DEVICES AND CONTROLS

ON CERTAIN PASSENGER VEHICLES, THE WINDOW LIFTING ANTI-PINCHING DEVICE MIGHT NOT FUNCTION PROPERLY.

Consequence

OCCUPANTS COULD BE PINCHED BY A WINDOW THAT IS BEING CLOSED.

Remedy

DEALERS WILL INSPECT, AND IF NECESSARY, REPLACE THE ELECTRONIC CONTROL UNIT FOR THE WINDOW LIFTING A

NHTSA #20V01800015/01/2020Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

BMW of North America, LLC (BMW) is recalling certain 2000-2005 323iT, 325iT, 325xiT, 320i, 323i, 325i, 325xi, 328i, 330i and 330xi and 2000-2006 323Ci, 325Ci, 328Ci, 330Ci, M3 Coupe, 323Cic, 325Cic, 3

Consequence

An inflator explosion may result in sharp metal fragments striking the driver or other occupants res

Remedy

BMW will notify owners, and dealers will replace the passenger's front air bag, free of charge. The

NHTSA #13V17200002/05/2013Component: AIR BAGS

BMW is recalling certain model year 2002-2003 325i, 325xi, 330i, 330xi sedans; 325Ci and 330Ci coupes and convertibles; 325iT and 325xiT Sports Wagons; and M3 coupes and convertibles to address a safe

Consequence

In the event of a crash necessitating deployment of the passenger's frontal air bag, the inflator co

Remedy

Owners are advised not to drive their vehicles until they have been repaired. BMW intends to issue i

TSB #10244237

Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. CAUSE Material-

TSB #10225126

Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column.

TSB #10194296

Diagnosis of Compound Brake System Complaints in M Vehicles: 1. Visible cracks are caused by high thermal stresses during rapid heating and cooling of the brake discs. Braking from high speed with cold brake components (less than 212 degree

TSB #10184591

SERVICE ACTION - HEAD AIR BAG HOLDER RETROFIT: A rattle noise may develop from the head air bag (ITS) gas generator contacting adjacent component. This noise can be heard while driving on an uneven roadway.

TSB #10057534

BMW: RUNNING NOISES HEARD WHEN BRAKES ARE APPLIED, WITH HIGH BRAKE LOADS; THROUGH WHEEL OPENING, VISIBLE CRACKS CAN BE SEEN IN BRAKE DISCS AND STEERING WHEEL TORSIONAL VIBRATES WHEN APPLYING BRAKES. *PE

TSB #10040853

BMW: A GRINDING NOISE IS COMING FROM THE DIFFERENTIAL DURING SLOW CORNERING. WHEN TURNING A SLIP/STICK EFFECT IS CREATED ON THE LINING AND STEEL DISCS INCORPORATED IN THE DIFFERENTIAL CLUTCH CAUSES A GRINDING NOISE. *RM

TSB #10037025

BMW: PROCEDURE FOR DETERMINING AND REPLACING INCANDESCENT AND HALOGEN LIGHT BULBS UNDER WARRANTY. *RM

TSB #10033130

BMW VEHICLES: FUEL LEVEL SENSOR REPAIRS. WHERE IT IS NECESSARY TO REPLACE THE RIGHT OR THE LEFT SIDE FUEL LEVEL SENSOR DUE TO A FAILURE, THE ENTIRE PUMP AND HOUSING OR DELIVERY UNIT (SUCTION JET ASSEMBLY) DO NOT NEED TO BE REPLACED AS WELL.

Showing the 8 most recent of 13 technical service bulletins on file with NHTSA.

20141023Component: AIR BAGSCrash reported1 injured

I WAS IN A SERIOUS AUTOMOBILE ACCIDENT INVOLVING A 2003 BMW M3. I SUSTAINED SERIOUS FACIAL TRAUMA THAT RESULTED IN THE LOSS OF VISION IN MY LEFT EYE. I HAD FACIAL STITCHES AS WELL AFTER THE ACCIDENT.

20030609Component: AIR BAGSCrash reported1 injured

MY CAR WAS HIT ON THE DRIVER SIDE RESULTING IN THE DRIVER'S DOOR BEING INDENTED 11" FROM IT'S NORMAL POSITION. THE INSIDE OF THE DOOR WAS ABOUT 2 INCHES FROM THE STEERING WHEEL. THE SIDE AIR BAG DID

20120915Component: AIR BAGSCrash reported

MY CAR WAS IN A COLLISION WHERE THE DRIVER OF CAR 1 WAS MAKING A TURN INTO THE MAIN STREET , SHE TURNED TOO WIDE AND COULD NOT COMPLETE THE TURN AND DECIDED TO BACK UP..SHE SLAMMED INTO MY CAR ,DAMA

Showing the 3 most serious of 69 complaints filed with NHTSA.

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