2017 BMW 120i Service and Repair Manual

This factory service and repair manual for the 2017 BMW 120i covers a turbocharged 2.0L inline-four of 122 cubic inches, double overhead camshafts, gasoline, in two hatchback bodies with either two or four doors. Four trims are documented: Base, M Sport, Sport Line and Urban Line. Because one engine serves the entire range, the fuel, ignition, charge-air and cooling material is written to a single specification, and the differences that remain between versions belong to the interior, the body and the wiring that supports their equipment.

Engines covered

• 2.0L inline-four (122 cu in) — DOHC, turbocharged, gasoline

Body styles covered

• 2-door hatchback
• 4-door hatchback

Trims covered

• Base
• M Sport
• Sport Line
• Urban Line

Known issues on the 2017 120i. Engine procedures for the turbocharged 2.0L four run from mechanical overhaul through boost control, injection and cooling, with specifications and torque values at each step. Transmission, driveline, brake, steering and suspension sections follow, and wiring diagrams with diagnostic routines cover the electrical systems of both hatchback bodies and all four trims.