2018 Subaru Impreza 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
- Touring Hatchback 4-Door
- Premium Sedan 4-Door
- Convenience Hatchback 4-Door
- Base Sedan 4-Door
- Sport-tech Sedan 4-Door
- Base Hatchback 4-Door
- Premium Hatchback 4-Door
- Touring Sedan 4-Door
- Sport-tech Hatchback 4-Door
- Limited Hatchback 4-Door
- Convenience Sedan 4-Door
- Sport Sedan 4-Door
- Sport Hatchback 4-Door
- Limited Sedan 4-Door
Engines covered
- 2.0L 1995CC H4 GAS DOHC Naturally Aspirated
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 2019-2020 Ascent, 2018 Forester, 2018-2020 Impreza, Legacy, Outback, 2018-2019 BRZ, WRX, and Toyota 86 vehicles. The low-pressure fuel pump insid
Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Dealers will replace the low-pressure fuel pump, free of charge. Owner notification letters were ma
Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Impreza and 2018-2019 Crosstrek vehicles. The Engine Control Module (ECM) may continue to power the ignition coil after the engine is s
If a short circuit occurs while driving, the vehicle may stall, increasing the risk of a crash.
Subaru will notify owners, and dealers will update the ECM software and inspect and replace the igni
Subaru of America, Inc. (Subaru) is recalling certain 2017-2018 Impreza and 2018 Crosstrek vehicles equipped with an aluminum Positive Crankcase Ventilation (PCV) valve. The PCV valve may come apart,
An unexpected loss of power while driving can increase the risk of a crash.
Subaru will notify owners, and dealers will inspect and, if necessary, replace the PCV valve, free o
Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Subaru Impreza and 2018-2019 Crosstrek vehicles. The Engine Control Module (ECM) may continue to power the ignition coil after the engi
A short circuit in the ignition coils may cause a stall, increasing the risk of a crash.
Subaru will notify owners, and dealers will update the ECM software, replace the ignition coils and,
Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Impreza vehicles. The left and right side reflex reflector and left side low beam reflector may inadequately reflect light. As such, t
Reflectors that do not provide adequate illumination reduce the driver's ability to see and increase
Dealers will replace the front headlamp assemblies, free of charge. Owner notification letters were
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 bulletin announces a design change made to the CVT Control Valve Body which incorporates an enhanced valve sleeve to improve durability.
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.
Showing the 8 most recent of 368 technical service bulletins on file with NHTSA.
THE SIDE AIRBAGS DID NOT DEPLOY AND 3 SENSORS WHERE ACTIVATED BUT BECAUSE OF THE ELECTRICAL PROBLEMS IT NEVER WENT OFF. *JS *JS
THE SIDE AIRBAGS DID NOT DEPLOY AND 3 SENSORS WHERE ACTIVATED BUT BECAUSE OF THE ELECTRICAL PROBLEMS IT NEVER WENT OFF. *JS *JS
THE SIDE AIRBAGS DID NOT DEPLOY AND 3 SENSORS WHERE ACTIVATED BUT BECAUSE OF THE ELECTRICAL PROBLEMS IT NEVER WENT OFF. *JS *JS
I WAS INVOLVE TO CAR ACCIDENT, I WAS A PASSENGER THE SEAT BELT WAS ON ME AND, PRAPORLY LUCKED TO THE SEAT. THE DRIVER AIRBAG DEPLOEY. HE DIDNT GET ANY DAMEGE TO HIS BODY. AND MY IARBAG DID NOT DEPLOEY
I WAS INVOLVE TO CAR ACCIDENT, I WAS A PASSENGER THE SEAT BELT WAS ON ME AND, PRAPORLY LUCKED TO THE SEAT. THE DRIVER AIRBAG DEPLOEY. HE DIDNT GET ANY DAMEGE TO HIS BODY. AND MY IARBAG DID NOT DEPLOEY
Showing the 5 most serious of 181 complaints filed with NHTSA.
