2019 Subaru WRX and WRX STI Repair Manual

Access the original OEM service and workshop repair manual for the 2019 Subaru WRX and Subaru WRX STI, including full electrical wiring diagrams and the owner’s manual in a simple PDF file format. This comprehensive guide provides the same level of detail used by Subaru dealership mechanics for diagnosing, servicing, and repairing your vehicle.

Engines covered:-

• 2.0L WRX
• 2.5L WRX STI

Vehicle Models Covered

• Make: Subaru
• Models: WRX, WRX STI
• Year: 2019
• Variants:
  • WRX (2.0L Turbocharged Boxer Engine, FA20F)
  • WRX STI (2.5L Turbocharged Boxer Engine, EJ257)

Key Features

• Comprehensive Coverage: Includes all aspects of maintenance, repair, and diagnostics.
• Authorized Procedures: Subaru-certified techniques for professional results.
• DIY Friendly: Straightforward instructions for car owners and enthusiasts.
• Convenient Format: Easily accessible PDF file, optimized for desktop or mobile devices.

Why Use This Manual?

• Expert Guidance: Gain insights directly from the manufacturer.
• Cost Savings: Perform repairs yourself and save money.
• Dealer-Level Quality: Ensure your car is maintained to Subaru’s high standards.
• All-Inclusive Resource: From basic maintenance to advanced diagnostics, it’s all here.

Perfect For:

• Subaru WRX and WRX STI owners seeking a reliable reference for repairs.
• DIY enthusiasts who enjoy maintaining and servicing their cars.
• Independent garages and professional mechanics requiring official Subaru documentation.

SAMPLE PAGES: 2019 Subaru WRX and WRX STI

2019 Subaru WRX & WRX STI – Complete Model Overview

Common Mechanical Issues

• Clutch Wear: Especially on WRX models due to aggressive driving habits
• Ringland Failure: STI’s EJ257 engine prone to piston ringland cracking under high stress
• Oil Consumption: Noticeable in some higher-mileage WRX/STI units
• Suspension Clunk: Clunks from front struts or rear sway bar bushings

Common Electrical Issues

• Infotainment Glitches: Starlink system freezing or lagging, requires firmware update
• Battery Drain: Resulting from modules staying awake or frequent short trips
• TPMS Errors: Cold weather triggering false alerts

Performance Specifications

• WRX Engine: 2.0L Turbocharged H4 (FA20DIT)
• STI Engine: 2.5L Turbocharged H4 (EJ257)
• Horsepower: 268 hp (WRX), 310 hp (STI)
• Torque: 258 lb-ft (WRX), 290 lb-ft (STI)
• Transmission: 6-speed manual standard, CVT available for WRX base/premium
• Drivetrain: Symmetrical AWD (STI includes Driver Controlled Center Diff)
• Fuel Economy: WRX – 21/27 MPG, STI – 17/22 MPG (city/highway)

Main Competitors

• Honda Civic Type R
• Volkswagen Golf R
• Ford Focus RS
• BMW M240i xDrive

✅ Pros and Cons

• Pros: Excellent grip and AWD handling, powerful turbo engines, responsive steering
• Cons: Harsh ride, aging infotainment system in STI, fuel economy on STI is low

Maintenance Schedule

• Oil Change: Every 6,000 miles (5W-30 synthetic)
• Tire Rotation: Every 6,000 miles
• Transmission Fluid: Inspect at 30,000 miles, replace at 60,000 miles
• Coolant: Replace every 11 years or 137,500 miles (Super Coolant)
• Spark Plugs: Replace at 60,000 miles (WRX), 100,000 miles (STI)

Recalls (2019 Subaru WRX & STI)

• Brake Light Switch: Corrosion may cause malfunction — switch replacement
• PCV Valve: Separation risk, may cause engine failure — updated component installed

Technical Service Bulletins (TSBs)

• 15-208-17R: Clutch pedal noise – apply updated grease or replace pedal box
• 07-155-18: Starlink freezing — software update available.