2008 BMW X6 Service and Repair Manual

This factory service and repair manual for the 2008 BMW X6 documents a four-door sport utility offered in two forms, xDrive35i and xDrive50i, with two turbocharged gasoline engines behind them: a 3.0L inline-six and a 4.4L V8, both double overhead cam. The gap between the two is wide enough that little carries across, since charge-air plumbing, cooling load, fuel delivery and torque values all differ, so identifying which engine is in the vehicle is the first step in most of the procedures here.

Engines covered

• 3.0L inline-six — DOHC, turbocharged, gasoline
• 4.4L V8 — DOHC, turbocharged, gasoline

Body styles covered

• 4-door sport utility

Trims covered

• xDrive35i
• xDrive50i

Known issues on the 2008 X6. Eight recalls sit on the federal record. Most concern frontal air bag inflators whose propellant can degrade with age and humidity until the inflator bursts and throws metal fragments into the cabin. One covers in-tank fuel pump wiring that was crimped too loosely, letting the connector melt and leak fuel or cut power to the pump and stall the engine. Another covers the circuit board for the auxiliary water pump, which can overheat and smolder or set the engine bay alight. Owners logged four complaints, spread across the electrical system, air bags and engine cooling, all diagnosed here.