2023 BMW M440i Gran Coupe Service and Repair Manual

This factory service and repair manual for the 2023 BMW M440i Gran Coupe describes a four-door hatchback sold in one trim, with a single gasoline engine: a 3.0L DOHC inline-six, turbocharged and mild hybrid. A hatchback body puts its own demands on the body and wiring material, since the tailgate, its seals and the circuits running into it all need procedures and diagrams of their own, while the engine, driveline and chassis chapters carry the specifications, torque values and diagnostics for the mechanical side of the car.

Engines covered

• 3.0L inline-six mild hybrid — DOHC, turbocharged, gasoline

Body styles covered

• 4-door hatchback

Trims covered

• Base

Known issues on the 2023 M440i Gran Coupe. Diagnosis on a mild hybrid runs through the control modules first, and the manual is built for that order of work. It provides fault-code routines and measured values for the engine management system, wiring diagrams showing both the low-voltage circuits and the hybrid electrical hardware, and connector views for tracing a break to a specific point in the harness. Mechanical repair follows: torque sequences and clearances for the inline-six, removal and installation steps for its ancillaries, and the driveline, suspension, steering and brake procedures.