2019 BMW 420i Gran Coupe Service and Repair Manual

This factory service and repair manual for the 2019 BMW 420i Gran Coupe begins where any job on the car begins, in the engine bay: a 2.0L inline-four of 122 cubic inches, double overhead cams, turbocharged, gasoline. From there it works back through the four-door hatchback body in its Executive and Sport Line forms, which are mechanically the same. The organization is by system, so a driveline concern, a climate concern and a lighting concern each have their own procedures, specifications and wiring diagrams rather than a shared general chapter.

Engines covered

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

Body styles covered

• 4-door hatchback

Trims covered

• Executive
• Sport Line

Known issues on the 2019 420i Gran Coupe. Because the 2019 420i Gran Coupe carries a small, hard-worked turbocharged engine, its service data leans on precise figures: oil grade and capacity, coolant fill and bleed, timing chain and tensioner service, plug gap and replacement, fuel pressure targets, and the boost readings that separate a leaking charge pipe from a failing control valve. The hatchback body has its own set of adjustments for the tailgate, doors and glass, and the diagnostic sections connect a warning lamp to the module and circuit that set it.