2009 Mercedes-Benz S450 Service and Repair Manual

This factory service and repair manual for the 2009 Mercedes-Benz S450 covers its engine, body and trim. Under the hood sits a 285-cubic-inch (4.7L) gasoline V8 with dual overhead cams and natural aspiration. It powers a four-door sedan listed in a single trim, 4Matic. The manual gives engine torque figures, specifications and chassis wiring diagrams for this sedan.

Engines covered

• 4.7L V8 (285 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• 4Matic

Known issues on the 2009 S450. Where should a 2009 S450 job start? Often with the V8 itself, and the manual gives its timing, cooling and lubrication procedures with the matching torque values. Removal and installation procedures cover the 4Matic transfer and axle components. Gasoline fuel injection and ignition are handled through diagnostic routines and wiring diagrams, which also cover the sedan's body electrical, lighting and climate circuits.