Replacement Guide / Toyota / Prius / 2004
Replacement guide
2004 Toyota Prius
Owner-reported component and symptom data for this model year.
What are you trying to fix?
Replacement-related components reported for this vehicle
17 owner reports involving the headlights
View replacement guide10 owner reports involving the battery
View replacement guide4 owner reports involving the water pump
View replacement guide3 owner reports involving the throttle body
View replacement guide2 owner reports involving the alternator
View replacement guide1 owner report involving the cooling fan
View replacement guide1 owner report involving the brake caliper
View replacement guide1 owner report involving the brake lights
View replacement guide1 owner report involving the power window regulator
View replacement guideBrowse by system
Starting / charging
- Battery — 10 owner reports
- Alternator — 2 owner reports
Cooling / HVAC
- Water Pump — 4 owner reports
- Cooling fan — 1 owner report
Lighting / visibility
- Headlights — 17 owner reports
- Brake lights — 1 owner report
About this data
Component evidence comes from structured complaint categories and reviewed component mentions in complaint summaries. Owner-situation evidence comes from reviewed symptom language in complaint summaries. Reports are signals, not diagnoses.
How to read the counts
Counts are distinct owner reports involving a canonical component. They are not a failure rate, probability, or share of vehicles sold. A complaint involving a component does not prove that component caused the problem. Parent NHTSA system buckets are not counted as the part itself.