2013 Subaru Forester Factory Service Manual (P/N G8180BE2)

• 4,536 PDF pages total — a 4,366-page service-manual compilation plus a 170-page Body Repair Manual. Main-file breakdown: 125 pages of general information and maintenance; G8180BE2 Engine 1, 1,335 pages; G8180BE3 Engine 2, 1,023 pages; G8180BE4 Transmission, 377 pages; G8180BE5 Chassis, 431 pages; G8180BE6 Body, 858 pages; and G8180BE7 Wiring, 217 pages.
• Covers the 2013 MY SH-series Forester (manual applicability code 2013 MY SH*****) with the FB25 2.5L non-turbo engine (H4DO sections) and 5MT or 4AT, plus the EJ255 2.5L turbo engine (H4DOTC sections) with 4AT. VIN, model-number, engine, transmission, rear-differential, and option-code identification are included.
• Engine sections document removal and installation, compression and pressure checks, FB25 cam-clearance and timing-chain work, EJ255 valve-clearance and timing-belt service, cylinder-head and short-block disassembly, turbocharger and intercooler service, cooling and lubrication repair, inspection, and adjustment.
• Transmission and AWD coverage reaches beyond fluid service: 4AT road, stall, time-lag, line-pressure, and transfer-clutch tests; control-valve air bleeding; internal case, oil-pump, clutch, and differential repair; 5MT transfer case, center differential, shaft, gear, and shift-mechanism overhaul; clutch hydraulic bleeding and adjustment.
• Chassis procedures cover wheel alignment, front and rear suspension, hub bearings and drive shafts, front and rear differentials, VDC/ABS sequence control, brake service and air bleeding, steering gearbox and pump repair, TPMS transmitter registration, and system-specific diagnostic tables.
• Diagnostic material includes Subaru Select Monitor functions, DTC criteria and flowcharts, no-start diagnosis, 4AT learning control, VDC, automatic A/C self-diagnosis, SRS and occupant-detection calibration, immobilizer, and Body Integrated Unit/LAN functions.
• A dedicated 217-page wiring section provides power-supply and ground diagrams, engine-electrical and 4AT-control schematics, VDC and airbag/occupant-detection circuits, immobilizer and CAN communication diagrams, plus connector and harness-location views. The separate body-repair volume adds structural section views, weld-point maps, panel-drilling directions, fit gauges, body reference dimensions, corrosion-protection locations, and total or partial panel-replacement drawings.

Model Identification and Shop Planning

This is a factory repair set, not a contents-only overview. The main manual is written for maintenance, disassembly, reassembly, inspection, adjustment, and diagnosis by experienced mechanics. Its opening material covers recommended lubricants, sealers, adhesives, and other service materials, along with pre-delivery inspection and periodic maintenance schedules. Specification sections provide component torque data, fluid capacities, pressure-test information, clearances, inspection limits, electrical I/O values, and chassis dimensions.

Before parts are ordered, the identification chapter decodes the VIN and model-number label and shows where the engine, transmission, and rear-differential markings are located. That matters because the two engine families use different repair paths. FB25 service is built around chain-driven cam timing and cam-clearance inspection, while EJ255 coverage includes timing-belt and valve-clearance procedures, turbocharger and intercooler work, wastegate control, and secondary-air components. The model coding also makes clear that the 5MT applies to non-turbo cars; turbo coverage is 4AT.

Factory Repair and Diagnostic Depth

The engine chapters continue through engine removal, overhaul preparation, camshafts and cam carriers, cylinder heads, cylinder blocks, valves, pistons, connecting rods, and crankshafts. The 4AT material covers the control valve, transfer clutch, converter case, oil pump, drive pinion, front differential, and main case. The 5MT chapters address the transfer and extension cases, center differential, main and drive-pinion shafts, front differential, reverse mechanism, and shifter forks and rods. Preparation tables call out Subaru special tools by number, including the 498277200 Stopper Set used to retain the torque converter during engine removal, the 499817100 Engine Stand, and the 498575400 Oil Pressure Gauge with its 4AT adapters.

The diagnostic chapters go well beyond a DTC list. Both engine families receive scan-tool and Subaru Select Monitor coverage, inspection and drive-cycle modes, compulsory valve operation, system checks, no-start diagnosis, DTC troubleshooting, and DTC detection criteria. Separate sections handle 4AT learning control and symptoms without stored codes, TPMS transmitter-ID registration, VDC diagnosis, automatic A/C actuator and sensor tests, cruise cancel codes, airbag and occupant-detection faults, immobilizer diagnosis, Body Integrated Unit registration, and CAN/LAN communication.

The main Body Structure chapter sends the technician to the separate Body Repair Manual included in the set. That 170-page volume covers panel construction and cross-sections, body reference points, fitting dimensions, galvanized sheet metal and plastic-material identification, body sealing, anticorrosion wax, undercoat, and structural repair drawings from the radiator panel and pillars through the quarter panels, rear floor, rear frame, and roof.

A few cautions show why the variant-specific procedures matter. With the FB25 timing chains removed, uncontrolled camshaft rotation can bring valves into contact with each other or the pistons and bend the valve stems; the EJ255 timing-belt section warns that timing misalignment can cause valve-to-piston contact. The body drawings warn against blocking water-drain holes with sealer and show where corrosion protection must be restored; the electrical and SRS cautions prohibit direct probing of airbag terminals, call for occupant-detection-system rezeroing after specified passenger-seat work, and explain how silicone-containing spray residue on electrical contacts can create circuit faults.

This set is written for experienced technicians and well-equipped DIY owners. It contains actual factory repair and diagnostic procedures, but it is not a parts catalog; the manual directs part-number lookup and parts ordering to the separate Subaru parts catalog.