2011 BMW 128i Service and Repair Manual

This factory service and repair manual for the 2011 BMW 128i documents a two-body, one-engine car: the naturally aspirated 3.0L DOHC inline-six in a two-door convertible and a two-door coupe, both Base trim. Given how much of the recorded trouble on this generation sits in the electrical and engine systems, the sections that matter most are the wiring diagrams and the diagnostic procedures, and they are given circuit by circuit and code by code rather than in summary form.

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 2011 128i. Seven recalls sit on the federal record for this model year. Wiring and connectors in the blower-regulator harness can overheat until the connectors melt, with a fire risk even in a parked car. The heater in the crankcase ventilation valve can short-circuit and melt the parts around it, again a fire risk when the car is standing. A third covers driver's air bag inflators that can rupture on deployment and throw metal fragments at the occupants. Complaints reach 92 — 35 on air bags, 14 on the electrical system, 13 on engine and cooling.