2003 BMW 525i Service and Repair Manual

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Covers all 2003 525i trims — Base Sedan 4-Door, Base Wagon 4-Door ·
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2003 BMW 525i 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.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Base Sedan 4-Door
  • Base Wagon 4-Door

Engines covered

  • 2.5L 2494CC 152Cu. In. 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 #15V31800028/05/2015Component: AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE

BMW of North America, LLC (BMW) is recalling certain model year 2002-2005 325i, 325xi, 330i, and 330xi Sedans, and 325xi and 325i Sportswagons, 2002-2006 330Ci, 325Ci, and M3 Convertibles and 325i, 33

Consequence

In the event of a crash necessitating deployment of the driver's frontal air bag, the inflator could

Remedy

Owners are advised not to drive their vehicles until the vehicle has been remedied. BMW will notify

NHTSA #19V01500014/01/2019Component: AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE

BMW of North America, LLC (BMW) is recalling certain model year 2000-2003 525i Sedan, 530i Sedan, 540i Sedan, 2001-2003 525i Sports Wagon and 540i Sports Wagon vehicles, and 2000-2004 X5 SAV 3.0i, X5

Consequence

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

Remedy

Owners are advised not to drive their vehicles until the vehicle has been remedied. BMW will notify

TSB #10249437

The basic conditions for initializing the power windows are not met.

TSB #10247567

Engine will crank but not start. There is no communication with the integrated fuel module (TFE) whendiagnosing with ISTA. The following two fault codes will be stored in the DME: 032B43 - Low fuel pressure system, electric fuel pump: press

TSB #10245422

Customers may state that the alarm system (DWA) is not active after locking their unoccupied vehicle. Depending on the vehicles equipment and settings, no acoustic or optical confirmation (folding the mirrors/blinking confirmation) is notic

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.

TSB #10000372

ENGINE WIRING HARNESS SECTION REPLACEMENT FOR IGNITION COILS. *TT

20050314Component: SEAT BELTS:REAR/OTHERCrash reported1 injured

ON 8 MARCH 2005 AT APPROXIMATELY 3:20PM, [XXX] (SPOUSE) AND [XXX] (4 YEAR OLD CHILD) WERE HEADING WESTBOUND ON GRAND RIVER AVE. IN NOVI MICHIGAN. [XXX] WAS SECURED IN A GRACO BOOSTER SEAT IN THE SUBJ

20150901Component: AIR BAGSCrash reported

TL* THE CONTACT OWNS A 2003 BMW 525I. WHILE DRIVING 40 MPH, THE DRIVER VEERED AND CRASHED INTO A CURB. THE DRIVER SIDE AIR BAGS FAILED TO DEPLOY, THE PASSENGER SIDE DOOR AIR BAG DEPLOYED, BUT THE PASS

20140309Component: SEATSCrash reported

DRIVER SEAT AND PASSENGER POWER MOTOR OF SEAT NOT WORKING, AND CAN I ASKING IF I BUY THIS CAR FROM DEALER USED CAR,THIS CAR HAVE 5 RECALL,,THE DEALER DON'T TELL ME ABOUT THE CAR HAVE RECALL, THAT

Showing the 3 most serious of 40 complaints filed with NHTSA.

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