2020 BMW 840i Gran Coupe Service and Repair Manual

This factory service and repair manual for the 2020 BMW 840i Gran Coupe covers a four-door sedan in one Base specification, powered by a turbocharged 3.0L inline-six with double overhead camshafts on gasoline. Four doors mean more harnesses, more latches and more glass than a two-door version of the same mechanical package, and the body and electrical chapters are devoted to them, while the engine, transmission and chassis sections carry the specifications, torque values and clearances the drivetrain needs.

Engines covered

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

Body styles covered

• 4-door sedan

Trims covered

• Base

Known issues on the 2020 840i Gran Coupe. Body electrics take up a large share of the work on a sedan like this, and the 2020 840i Gran Coupe's wiring diagrams trace each circuit from fuse and module out to the door, lamp or motor it drives, with connector views for testing along the way. Mechanical coverage is equally specific: cooling and lubrication capacities, thermostat and pump procedures, timing chain and camshaft data for the turbocharged six, charge-air inspection, fuel and ignition tests, and brake, steering and suspension dimensions for the chassis.