2018 BMW 440i Gran Coupe 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 Hatchback 4-Door
- M Sport Hatchback 4-Door
Engines covered
- 3.0L 2998CC l6 GAS DOHC Turbocharged
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
BMW of North America, LLC (BMW) is recalling certain 2018 430i, 430i xDrive, 440i, 440i xDrive, and M4 convertible vehicles. The Emergency Locking Retractors (ELR) within the front seat belt assembli
If the vehicle has an incompatible vehicle-sensitive locking mechanism, the seat belt may not restra
BMW will notify owners, and dealers will inspect and, if necessary replace, the front seat belt asse
The EVAP systems purge (vent) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in-service date.
The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on ho
The basic conditions for initializing the power windows are not met.
The paint finish on the door jamb (above the door striker) is scratched due to the inner door cavity window seal.
PRESSURE CONTROL VALVE (PCV) EXTENDED LTD WTY 15 YEARS/150,000 MILES
?The front seat will not calibrate/initialize, and the stored faults cannot be deleted.
After programming the head unit (HU-H2), activating the FSC (German word Freischaltcode) Enabling Codes repeatedly fails.
Upon opening and closing the tailgate, a creaking/groaning sound can be heard from tailgate actuator.
Showing the 8 most recent of 54 technical service bulletins on file with NHTSA.
The contact owned a 2018 BMW 440i. The contact stated that while driving at 65 MPH, the vehicle crashed into a donkey. There were no airbags deployed upon impact. The windshield glass shattered and h
I was rear ended. My airbag did not deploy. I do not think my seatbelt restrained me because I was not sore in that area, but do not remember. My head hit the stearing wheel. I spent 3 months in a
I was rear ended. My airbag did not deploy. I do not think my seatbelt restrained me because I was not sore in that area, but do not remember. My head hit the stearing wheel. I spent 3 months in a
Showing the 3 most serious of 13 complaints filed with NHTSA.
