2021 BMW 840i xDrive Service and Repair Manual

This factory service and repair manual for the 2021 BMW 840i xDrive treats one specification thoroughly rather than several thinly: Base trim, a turbocharged 3.0L twin-cam inline-six on gasoline, and two body styles, a two-door convertible and a two-door coupe. Each system on the car, from engine mechanical, fuel and ignition and cooling through transmission, driveline, brakes, steering and suspension to climate control, body and electrics, carries its own procedures, specifications, torque values and wiring diagrams.

Engines covered

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

Body styles covered

• 2-door convertible
• 2-door coupe

Trims covered

• Base

Known issues on the 2021 840i xDrive. The manual's purpose is maintenance and repair, and it sets out the specifications for both: oil and coolant grades and capacities, cooling system bleed steps, timing chain and camshaft figures, charge-air and fuel-pressure checks, transmission and driveline torque values, brake and suspension dimensions, and the wiring diagrams covering lighting, comfort and roof-operation circuits on both bodies.