2003 BMW 745Li 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 Sedan 4-Door
Engines covered
- 4.4L 4398CC V8 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
ON CERTAIN PASSENGER VEHICLES, THE ENGINE OIL FILTER DRAIN PLUG MAY BE INSUFFICIENTLY TIGHTENED. THIS COULD LEAD TO LOOSENING OF THE PLUG CAUSING AN INITIAL OIL SPRAY AND A SUBSEQUENT OIL LEAK.
IF A LARGE AMOUNT OF OIL LOSS OCCURS, ENGINE DAMAGE MAY RESULT. DEPENDING ON THE EXTENT OF THE DAMA
DEALERS WILL INSPECT THE TORQUE OF THE OIL FILTER DRAIN PLUG AND, IF NECESSARY, RETIGHTEN THE DRAIN
ON CERTAIN PASSENGER VEHICLES, DUE TO A SOFTWARE ERROR, A DESYNCHRONIZATION OF THE VALVETRONIC MOTORS FOR ENGINE BANKS I AND II MAY OCCUR. IF THIS OCCURS, THE ENGINE COULD STALL.
IN THOSE CASES, THE DRIVER MAY NOT BE ABLE TO RESTART THE ENGINE. DEPENDING ON THE LEVEL OF ENGINE
DEALERS WILL REPROGRAM THE DIGITAL ENGINE MANAGEMENT CONTROL UNIT. OWNER NOTIFICATION BEGAN JULY 8,
The basic conditions for initializing the power windows are not met.
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
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
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.
BMW: PROCEDURE FOR DETERMINING AND REPLACING INCANDESCENT AND HALOGEN LIGHT BULBS UNDER WARRANTY. *RM
BMW: A NEW TECHNICAL PROCESS HAS BEEN CREATED FOR BMW TO IDENTIFY CAUSES OF STEERING COMPLAINTS WITH A WIDE RANGE OF MODELS. *RM
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.
TL* THE CONTACT OWNS A 2003 BMW 745LI. WHILE ATTEMPTING TO STOP THE VEHICLE WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE INDEPENDENTLY ACCELERATED. AS A RESULT, THE CONTACT CRASHED INTO THE DRIVER SIDE
TL* THE CONTACT OWNS A 2003 BMW 745LI. WHILE ATTEMPTING TO STOP THE VEHICLE WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE INDEPENDENTLY ACCELERATED. AS A RESULT, THE CONTACT CRASHED INTO THE DRIVER SIDE
The contact owns a 2003 BMW 745LI. The contact stated while driving approximately 70 MPH, the brake fluid warning light illuminated. The vehicle was taken to the local dealer and diagnosed with rotors
Showing the 3 most serious of 77 complaints filed with NHTSA.
