2004 Toyota Prius - Maintenance & Specs
The 2004 Toyota Prius belongs to a Toyota Prius lineup that Know Your Ride tracks across 13 model years, from 2001 to 2026. Engine options on record include the 1.5L, 1.5L I4. It is configured as front-wheel drive with an automatic (variable gear ratios). The 2004 sits mid-run, with both earlier (2001) and later (2026) Prius model years also documented.
It takes 5W-30 full synthetic oil, 4.4 qt with a new filter meeting ILSAC GF-6A. Fluid specs on file include Super Long Life Coolant (SLLC) coolant, DOT 3 brake fluid. Know Your Ride lists 12 scheduled maintenance items for this vehicle, the earliest interval falling at 7,500 miles. Documented torque values include oil drain plug 30 ft-lb, lug nut 76 ft-lb, spark plug 18 ft-lb.
NHTSA complaints for this vehicle cluster around exterior lighting (156), electrical system (111), engine and engine cooling (72). A representative report reads: "Codes C1256 and C1391 ACC low pressure and abnormal leak of ACC press" There are 6 safety recalls on record; one covers: TOYOTA IS RECALLING CERTAIN MODEL YEAR 2004-2010 PASSENGER VEHICLES. THE ACCELERATOR PEDAL CAN GET STUCK IN THE WIDE OPEN POSITION DUE TO ITS BEING....
EPA fuel economy is rated at 48 city / 45 highway MPG, 46 MPG combined. Estimated annual fuel cost is about $950.
Quick Specs
| Oil viscosity | 5W-30 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 4.4 qt |
| OEM oil spec | ILSAC GF-6A |
| EPA combined | 46 MPG |
| Coolant | Super Long Life Coolant (SLLC) |
| Open recalls on record | 6 |
| Technical service bulletins | 56 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
Related Vehicles
Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.