2005 Toyota Prius

The 2005 Toyota Prius is a popular hybrid vehicle known for its exceptional fuel economy and reliability. It features a 1.5-liter four-cylinder gasoline engine paired with an electric motor, producing a combined 110 horsepower and 82 lb-ft of torque. Owners often praise the Prius for its fuel efficiency, quiet ride, and eco-friendly design. Common dislikes include the somewhat bland styling and occasionally sluggish acceleration.

Electric Motor

1.5L Hybrid System

• Hybrid Battery Failure
  • Description/Symptoms: Reduced fuel economy, warning lights on the dashboard (e.g., check engine, hybrid system warning), reduced power, and eventual inability to start the car. Battery life can vary greatly depending on usage and environmental factors.
  • Solution: Replacement of the hybrid battery pack with a new or refurbished unit.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found
• Inverter Failure
  • Description/Symptoms: Overheating, warning lights, loss of power, and potential shut-down of the hybrid system.
  • Solution: Replacing the inverter assembly.
  • Estimated Cost to Fix: $2,500 - $5,000+
  • Recalls: None Found

Transmission

Hybrid Transaxle (CVT)

• Transaxle Bearing Failure
  • Description/Symptoms: Loud whining or grinding noise, especially at higher speeds. The noise may increase or decrease with vehicle speed.
  • Solution: Replacement of the failing transaxle bearings. In severe cases, complete transaxle replacement might be necessary.
  • Estimated Cost to Fix: $1,500 - $4,000+ depending on the extent of the damage and whether a rebuild or replacement is chosen.
  • Recalls: None Found

Suspension

• Rear Shock Absorber Failure
  • Description/Symptoms: Bouncy ride, excessive body roll during cornering, leaking fluid from the shock absorber, and uneven tire wear.
  • Solution: Replacement of the rear shock absorbers.
  • Estimated Cost to Fix: $200 - $500+ for parts and labor.
  • Recalls: None Found

Electrical

• Combination Meter Failure (Dashboard Display)
  • Description/Symptoms: Intermittent or complete failure of the dashboard display, making it difficult or impossible to read speed, fuel level, and other critical information.
  • Solution: Replacement or repair of the combination meter. Some owners have had success with DIY repairs, but professional service is often recommended.
  • Estimated Cost to Fix: $500 - $1,200+ for replacement or repair.
  • Recalls: Safety Recall E0E - Rectification of Instrument Panel Illumination
• 12V Auxiliary Battery Failure
  • Description/Symptoms: Difficulty starting the car, dim headlights, and issues with the car’s electrical systems. The 12V battery in the Prius is used to power the car’s accessories and start the hybrid system.
  • Solution: Replacement of the 12V auxiliary battery.
  • Estimated Cost to Fix: $200 - $400+ for a new battery and installation.
  • Recalls: None Found

Exterior

• Headlight Condensation/Clouding
  • Description/Symptoms: Moisture buildup inside the headlight lenses, leading to reduced visibility and a cloudy appearance.
  • Solution: Cleaning and resealing the headlight lenses, or replacing the entire headlight assembly.
  • Estimated Cost to Fix: $100 - $600+ depending on the chosen solution.
  • Recalls: None Found

Interior

• Multi-Function Display (MFD) Screen Issues
  • Description/Symptoms: Fading, discoloration, or complete failure of the MFD screen.
  • Solution: Replacement of the MFD unit, or repair of the screen if possible.
  • Estimated Cost to Fix: $400 - $1,000+ for replacement or repair.
  • Recalls: None Found

Summary

The 2005 Toyota Prius, while known for its fuel efficiency and innovative hybrid technology, does have some common issues. The most concerning are hybrid battery and transaxle failures, which can be costly to repair. Electrical issues with the combination meter and MFD screen are also relatively common and can impact the driving experience. While other issues like suspension components and headlight clouding are less severe, it’s still important to be aware of them. Overall, potential buyers should carefully inspect the hybrid battery and transaxle, and consider having a pre-purchase inspection performed by a qualified mechanic familiar with hybrid vehicles.