2009 Subaru Impreza Service and Repair Manual

This factory service and repair manual for the 2009 Subaru Impreza reaches across eight trims, among them the 2.5 GT, R, Sport, WRX Premium and WRX STI. Under the hood sits one of three horizontally opposed four-cylinder gasoline engines: a 2.0L of 122 cubic inches with double overhead cams and natural aspiration, a 2.5L single-overhead-cam engine that also does without a turbo, or a 2.5L turbocharged twin-cam. Sedan and hatchback bodies both have four doors. The manual gives engine, cooling and drivetrain specifications for these engines.

Engines covered

• 2.0L flat-four (122 cu in) — DOHC, naturally aspirated, gasoline
• 2.5L flat-four — DOHC, turbocharged, gasoline
• 2.5L flat-four — SOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan
• 4-door hatchback

Trims covered

• 2.5 GT
• 2.5i
• Outback Sport
• R
• Sport
• WRX
• WRX Premium
• WRX STI

Known issues on the 2009 Impreza. There are 14 recalls on the federal record for the 2009 Impreza. One targets certain 2009 Impreza vehicles fitted with a replacement mechanical-key ignition switch whose spring can fracture, letting the key rotate out of run and stop the engine; with the engine off, the air bag may also fail to deploy in a crash. Another covers certain 2009 Impreza sedans whose brake light switch can be fouled by contaminants, keeping the brake lamps from lighting. The 103 complaints group around power train (30), structure (22), service brakes (14), engine (13) and air bags (12), and 2 complaints reported a crash. Ignition and brake diagnostics, wiring diagrams and specifications relate directly.