2012 BMW 550i GT xDrive Service and Repair Manual

This factory service and repair manual for the 2012 BMW 550i GT xDrive has one engine to explain and it is a substantial one: a 4.4L V8, turbocharged, double-overhead-cam and burning gasoline, installed in a four-door hatchback offered in a single trim. Working on an engine that size in a body that shape is largely a question of access and order, which is what the procedures address. What comes off first, what is tightened to what, and what must be checked before the car is driven again.

Engines covered

• 4.4L V8 — DOHC, turbocharged, gasoline

Body styles covered

• 4-door hatchback

Trims covered

• Base

Known issues on the 2012 550i GT xDrive. Beyond engine work, the manual covers the driveline, the brake, steering and suspension systems with their wear limits and tightening specifications, the heating and air conditioning system, and the hatchback body with its rear opening, seals, glass and trim. Wiring diagrams identify the circuits behind each of those systems, including the harness runs into the tailgate. Diagnostic sections state the conditions of each test and the values a good system returns, which is what separates a confirmed fault from a suspected one.