2005 BMW 645Ci Service and Repair Manual

This factory service and repair manual for the 2005 BMW 645Ci is built around a 4.4L V8 — double overhead camshafts, no forced induction, gasoline — offered in a single trim across a coupe and a convertible. Eight cylinders and a long service list make the engine section the heart of the book, but the convertible in the range means the roof system, its motors, sensors and hydraulics, is documented to the same standard, with diagnostics rather than an exploded view alone.

Engines covered

• 4.4L V8 — DOHC, naturally aspirated, gasoline

Body styles covered

• 2-door convertible
• 2-door coupe

Trims covered

• Base

Known issues on the 2005 645Ci. Coverage runs through the V8's mechanical specifications and torque sequences, its oiling and cooling requirements, and the fuel, ignition and emissions diagnostics attached to it. The driveline, brakes, suspension and steering each get service procedures and figures. Electrical coverage is substantial on a car of this generation, with wiring diagrams that follow a circuit from its supply through the module that controls it to the component it drives, drawn separately for the coupe and the convertible.