Engine:
Detailed diagnostics, repair, overhaul, and specifications for EJ253 (2.5L SOHC) and EJ255 (2.5L DOHC Turbo).
Fuel System:
Fuel injection system, fuel pump, injectors, pressure regulator, EVAP system diagnostics and repair.
Ignition System:
Ignition coils, spark plugs, ignition timing, coil-on-plug system analysis.
Cooling System:
Radiator, thermostat, water pump, cooling fan operation, coolant specifications, pressure testing.
Exhaust System:
Catalytic converter, muffler, exhaust manifold, O2 sensors, emissions control components.
Transmission Manual:
Clutch system, gearbox removal, disassembly, inspection, assembly, and troubleshooting.
Transmission Automatic:
AT control system, torque converter, valve body, hydraulic circuits, fluid specifications, diagnostics.
Drivetrain AWD:
All-Wheel Drive system operation, viscous coupling, center differential, rear differential, axle shafts, driveshafts.
Steering:
Power steering pump, rack and pinion, steering column, troubleshooting steering assist issues.
Suspension:
Front and rear suspension components, struts, springs, control arms, bushings, alignment specifications.
Brakes:
Front and rear disc brakes, ABS system, brake fluid specifications, bleeding procedures, parking brake.
Electrical System:
Battery, charging system, starter motor, lighting system, horn, power windows, locks, mirrors.
Body And Frame:
Body panels, doors, hood, tailgate, interior trim, chassis frame inspection, rust repair.
HVAC System:
Air conditioning system, heater core, blower motor, refrigerant, cabin filter replacement.
Safety Systems:
Airbag system, seat belts, SRS component diagnostics and replacement.
Diagnostics And Troubleshooting:
OBD-II codes, diagnostic flowcharts, circuit diagrams, common fault finding.
Routine Maintenance:
Oil changes, filter replacements, spark plug replacement, fluid checks, belt inspection.
Engine Repair:
Head gasket replacement, piston and ring service, valve adjustments, timing belt/chain replacement (if applicable).
Transmission Repair:
Clutch replacement, transmission overhaul, solenoid testing and replacement.
Brake Service:
Brake pad and rotor replacement, brake caliper overhaul, ABS sensor replacement.
Suspension And Steering Repair:
Strut replacement, ball joint replacement, tie rod end replacement, power steering pump replacement.
Electrical Diagnostics:
Wiring diagrams, component testing, fuse and relay identification, sensor testing.
Body And Interior Repair:
Door panel removal, interior trim replacement, minor body panel repair.
HVAC Repair:
A/C system recharging, heater core replacement, blower motor replacement.
Troubleshooting Guides:
Step-by-step diagnostic procedures for common and uncommon issues.
Depth:
Comprehensive, covering from basic maintenance to full engine and transmission rebuilds.
Detail Level:
Includes detailed torque specifications, clearances, and procedures.
Diagnostic Tools:
Information relevant for using scan tools and multimeters for diagnostics.
NHTSA Front Crash Test Driver:
5 Stars
NHTSA Front Crash Test Passenger:
5 Stars
NHTSA Side Impact Front Passenger:
5 Stars
NHTSA Side Impact Rear Passenger:
4 Stars
IIHS Head Restraints And Seats:
Good
ABS:
Standard Anti-lock Braking System
Traction Control:
Available Traction Control System (TCS)
Electronic Stability Control:
Available Vehicle Stability Control (VSC)
Airbags:
Front dual-stage airbags, front side-impact airbags, available side curtain airbags.
Seatbelts:
Three-point seatbelts with pretensioners and load limiters in all seating positions.
Child Seat Anchors:
LATCH (Lower Anchors and Tethers for Children) system.
Oil Change Interval:
Every 3,750 miles (6,000 km) or 3 months, whichever comes first, under severe driving conditions; every 7,500 miles (12,000 km) or 6 months under normal conditions (refer to manual for specifics).
Engine Oil Filter:
Replace at every oil change.
Air Filter:
Inspect every 15,000 miles (24,000 km), replace as needed. Replace every 30,000 miles (48,000 km) or sooner if dirty.
Cabin Air Filter:
Inspect annually, replace as needed. Recommended replacement every 15,000-24,000 miles (24,000-38,000 km).
Spark Plugs:
Replace every 60,000 miles (96,000 km) for standard platinum plugs; iridium plugs may have longer intervals (refer to manual).
Coolant Replacement:
Initial replacement at 105,000 miles (168,000 km) or 7 years, then every 45,000 miles (72,000 km) or 4 years thereafter.
Transmission Fluid Automatic:
Replace fluid and filter every 30,000 - 60,000 miles (48,000 - 96,000 km), depending on driving conditions. Consult manual.
Transmission Fluid Manual:
Inspect every 30,000 miles (48,000 km), replace if necessary or at higher mileages per manual recommendation.
Differential Fluid Front Rear:
Inspect every 30,000 miles (48,000 km), replace as needed or per manual recommendations.
Engine Oil:
SAE 5W-30, API certified. Check manual for specific viscosity and API service category recommendations. (e.g., API SN or newer)
Coolant:
Subaru Super Coolant (Blue) or equivalent P-OAT formulation. Mix 50/50 with distilled water.
Brake Fluid:
DOT 3 or DOT 4 (check manual for exact specification).
Power Steering Fluid:
Subaru Genuine Power Steering Fluid or Dexron II/III equivalent (check manual for compatibility).
Automatic Transmission Fluid:
Subaru Genuine ATF-HP (High Performance) or equivalent. Avoid generic ATF fluids.
Manual Transmission Fluid:
SAE 75W-90, API GL-5 gear oil. Check manual for specific Subaru recommendations.
Rear Differential Fluid:
SAE 75W-90, API GL-5 gear oil. Check manual for specific Subaru recommendations.
Head Gaskets:
While not as prevalent as in earlier generations, some EJ25 engines can still experience head gasket leaks, particularly if overheated or poorly maintained.
Catalytic Converter:
Can degrade over time, leading to reduced performance and check engine lights. O2 sensor failure also common.
Suspension Components:
Wear items like struts, bushings, and ball joints can require replacement due to mileage and road conditions.
Automatic Transmission:
Some models may experience occasional hard shifts or delays, often related to valve body issues or fluid degradation. Regular fluid changes are crucial.
Wheel Bearings:
Front wheel bearings can sometimes wear out, causing humming or grinding noises.