2009 BMW 128i Service and Repair Manual

This factory service and repair manual for the 2009 BMW 128i has a short parts list to work from: one naturally aspirated 3.0L DOHC inline-six, one Base trim, and two bodies, a two-door coupe and a two-door convertible. Little of the mechanical content changes between them. On a car this straightforward the manual's value lies less in sorting variants than in having the factory's own torque values, clearances, pressure specifications and wiring diagrams to hand once a job runs past the point a generic procedure can carry it.

Engines covered

• 3.0L inline-six — DOHC, naturally aspirated, gasoline

Body styles covered

• 2-door convertible
• 2-door coupe

Trims covered

• Base

Known issues on the 2009 128i. Complaints on this model year number 79. The heaviest cluster, 19 of them, falls on air bags; exterior lighting and the fuel system follow with 14 each, an unusually even spread across three unrelated systems. Each has its place here — restraint components and their fault codes, the lighting circuits with wiring diagrams showing every lamp, switch and control module in the path, and the fuel delivery and injection system with pressure figures and leak-down checks — so a fault in any of them can be traced rather than guessed at.