2020 Subaru WRX service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical diagnostics with wiring diagrams
- Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
Trims covered
- Premium Sedan 4-Door
- Base Sedan 4-Door
- Sport Sedan 4-Door
- Sport-tech Sedan 4-Door
- Sport-tech RS Sedan 4-Door
- 6 Man Sedan 4-Door
- Limited Sedan 4-Door
- CVT Sedan 4-Door
Engines covered
- 2.0L 1998CC 122Cu. In. H4 GAS DOHC Turbocharged
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
Subaru of America, Inc. (Subaru) is recalling certain 2015-2021 WRX vehicles. The backup light switch may corrode and become inoperative, which can result in the backup lights not illuminating and th
Inoperative backup lights and an inoperative rearview camera can reduce vehicle visibility and drive
Dealers will inspect and replace the backup light switch, as necessary, free of charge. Owner notif
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
This announcement provides information on the remanufactured CVT transmission program.
This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT) are detected by Keyless Access with Push Button Start(KACM).
This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
This Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.
This Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting DTC B2A20.
Showing the 8 most recent of 259 technical service bulletins on file with NHTSA.
TL* THE CONTACT OWNED A 2020 SUBARU WRX. THE CONTACT STATED THAT WHILE HE SON WAS DRIVING AT 40 MPH, HE ATTEMPTED TO DEPRESS THE BRAKE PEDAL HOWEVER, THE VEHICLE FAILED TO STOP, RUNNING A RED LIGHT, T
TL* THE CONTACT OWNED A 2020 SUBARU WRX. THE CONTACT STATED THAT WHILE HE SON WAS DRIVING AT 40 MPH, HE ATTEMPTED TO DEPRESS THE BRAKE PEDAL HOWEVER, THE VEHICLE FAILED TO STOP, RUNNING A RED LIGHT, T
TL* THE CONTACT OWNED A 2020 SUBARU WRX. THE CONTACT STATED THAT WHILE HE SON WAS DRIVING AT 40 MPH, HE ATTEMPTED TO DEPRESS THE BRAKE PEDAL HOWEVER, THE VEHICLE FAILED TO STOP, RUNNING A RED LIGHT, T
The contact owns a 2020 Subaru WRX. The contact stated that while the transmission was shifted into neutral (N), the instrument panel displayed that the transmission was shifted in reverse (R), and th
The contact owns a 2020 Subaru WRX. The contact stated that while the transmission was shifted into neutral (N), the instrument panel displayed that the transmission was shifted in reverse (R), and th
Showing the 5 most serious of 23 complaints filed with NHTSA.
