1998 BMW 540i 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
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE DIFFERENTIAL PINION SHAFT WITHIN THE DIFFERENTIAL CASE ASSEMBLY WAS PRODUCED WITHOUT THE APPROPRIATE SURFACE HARDENING. THIS CAN RESULT IN THE SHAFT EXP
THIS CONDITION WILL CAUSE A NOISE FROM THE DIFFERENTIAL AND, ULTIMATELY, FAILURE OF THE SHAFT AND LO
DEALERS WILL REPLACE THE ENTIRE DIFFERENTIAL ASSEMBLY.
The basic conditions for initializing the power windows are not met.
INFORMATION ON PROGRAMMING ME7.2 ENGINE CONTROL MODULES WITH CD 18. *TT
SUBJECT PERTAINING TO DSP AMPLIFIER SWITCHING TO
INFORMATION ON EVAPORATIVE EMISSION CONTROL AND FUEL FILLER CAP / FILLER DOOR LABELS. *YC
ENGINE CRANKS, BUT WILL NOT START. *YC
SITUATION WITH THE TENSION ROD TEST GAUGE. *YC
INFORMATION AND PROCEDURES ON THE GARAGE DOOR OPENER. *YC
CONDITION WITH BRAKE PAD WARNING STAYS ILLUMINATED AFTER BRAKE PAD REPLACEMENT. *YC
Showing the 8 most recent of 12 technical service bulletins on file with NHTSA.
While stopped (engine still running) at a gas station, the driver side airbag and driver side side curtain airbag both went off. The battery disconnect feature was also triggered. Very lucky I wasn't
WHITE STEAM WAS COMING FROM UNDER THE HOOD ONTO THE FRONT WINDSHIELD. THE STEAM WAS FOGGING THE WINDSHIELD, AND CAUSING POOR VISIBILITY WHILE DRIVING 50-55 MPH. CONSUMER WAS ABLE TO GET THE VEHICLE TO
2ND CATASTROPHIC RADIATOR FAILURE. NOT A LEAK, THE NECK BREAKS OFF CAUSING IMMEDIATE LOSS OF COOLING. 1ST RADIATOR AT 45K, 2ND AT 92K. BASED ON OTHER'S EXPERIENCES, THIS IS VERY COMMON FOR THIS MODEL
Showing the 3 most serious of 28 complaints filed with NHTSA.
