2015 BMW 550i GT xDrive Service and Repair Manual

This factory service and repair manual for the 2015 BMW 550i GT xDrive covers a heavy four-door hatchback with a turbocharged 4.4L V8 ahead of it, double-overhead-cam and gasoline-fueled, sold in one trim. Cars like this are worked on in stages rather than all at once, and the manual is written for that. Procedures name what has to come off before the target part is reachable, what the tightening specification is on the way back, and what is checked before the panel goes on.

Engines covered

• 4.4L V8 — DOHC, turbocharged, gasoline

Body styles covered

• 4-door hatchback

Trims covered

• Base

Known issues on the 2015 550i GT xDrive. System coverage runs across the whole car. Engine mechanical, fuel, ignition, cooling and boost control are documented for the V8; the driveline, brakes, steering and suspension get their torque values and wear limits; the hatchback body gets its panel, glass, seal and trim procedures. Wiring diagrams show circuits with their connectors and grounds, and the diagnostic sections give the readings expected at each test point, which is what makes an intermittent fault provable instead of merely suspected.