2005 Toyota Prius 1NZ-FXE/2ZR-FXE (XW10)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• 12V battery degradation
• Hybrid battery health over time
• Inverter coolant leaks (less common)

First checks

• Check hybrid battery condition and cooling system
• Inspect inverter coolant levels
• Verify CVT operation smoothness

Vor dem Teiletausch

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• The 2005 model year Prius is the first generation XW10 with hybrid synergy drive refined for better durability.
• Engine oil capacity specified includes service-fill with oil filter change.
• Global markets had minor variations, with North America and Japan having the 1.5L 1NZ-FXE as standard.