The service and repair manual for the 2004 Subaru Impreza — 2.0L H4 and 2.5L H4 and 2.5L H4 engines, 6 trims. Matched to this exact model year, so the specifications and sequences are the ones Subaru published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 2004 |
|---|---|
| Engines | 2.0L H4 — 122 cu in, DOHC, turbocharged 2.5L H4 — 150 cu in, SOHC 2.5L H4 — 150 cu in, DOHC, turbocharged |
| Trims | WRX Sedan 4-Door · Outback Wagon 4-Door · RS Sedan 4-Door · WRX Wagon 4-Door · TS Wagon 4-Door · WRX STI Sedan 4-Door |
| Federal record | 7 recalls · 113 complaints · 176 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2004 Impreza manual
03 / ContentsSections in the manual
- Quick Lookups 177
- Engine Performance 1,689
- Accessories & Equipment 704
- General Information 1,417
- Body & Frame 363
- Heating, Ventilation & A/C (HVAC) 151
- Brakes 647
- Restraints 87
- Drivelines & Axles 84
- Steering 116
- Electrical 501
- Suspension 95
- Engine Mechanical 523
- Transmission 352
- C) and engine at 1,500
04 / Known issuesRecalls on federal record for the 2004 Impreza
- Vehicle Speed Control — cables · 04V128000If this occurs during vehicle operation, the driver could lose control of the vehicle, which could r.
- Air Bags — frontal › passenger side › inflator module · 23V076000An incorrectly installed inflator may not properly inflate the passenger air bag, increasing the ris.
- Suspension — front › control arm › lower arm · 11V464000A broken control arm can result in the loss of control of the vehicle, increasing the risk of a cras.
- Air Bags — frontal › passenger side › inflator module · 20V002000An inflator explosion may result in sharp metal fragments striking the driver or other occupants res.
- Air Bags — frontal › passenger side › inflator module · 20V001000An inflator explosion may result in sharp metal fragments striking the driver or other occupants res.
- Air Bags — frontal › passenger side › inflator module · 20V003000An inflator explosion may result in sharp metal fragments striking the driver or other occupants res.
- Engine And Engine Cooling · 04V473000If leaking oil contacts components operating at high temperatures, a fire could result in the engine.
Owners have filed 113 complaints and Subaru has issued 176 technical service bulletins for the 2004 Impreza. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2004 Impreza manual
Is this manual specific to the 2004 Impreza?
Yes. It is the OEM manual matched to the 2004 model year, covering the 2.0L H4 and 2.5L H4 and 2.5L H4 across the WRX Sedan 4-Door, Outback Wagon 4-Door, RS Sedan 4-Door, WRX Wagon 4-Door, TS Wagon 4-Door, WRX STI Sedan 4-Door trims. Specifications and procedure sequences are the ones Subaru published for this year.
What 2004 Impreza problems does it help with?
7 recalls are on federal record for the 2004 Impreza, covering vehicle speed control, air bags, suspension. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Subaru dealers.
Does it include 2004 Impreza wiring diagrams?
Yes — the complete wiring diagrams for the 2004 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $29.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther Impreza years and 2004 Subaru models
2010 Impreza · 2009 Impreza · 2008 Impreza · 2007 Impreza · 2006 Impreza · 2005 Impreza · 2003 Impreza · 2002 Impreza · 2001 Impreza · 2000 Impreza · 1999 Impreza · 1998 Impreza · all 32 years
2004 Subaru Baja · 2004 Subaru Forester · 2004 Subaru Legacy · 2004 Subaru Outback · every 2004 model