2001 Toyota Prius 1NZ-FXE (NHW10)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• 12V battery failure after extended use
• Hybrid battery degradation with age
• Inverter coolant leaks in some early models

First checks

• Inspect hybrid battery state of health
• Check inverter coolant level and condition
• Verify ignition coil and spark plugs condition

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 2001 Prius was primarily sold in Japan and the USA; European availability began late 2000 or early 2001 depending on country.
• Hybrid system combines petrol engine and electric motor; no conventional manual gearbox option available.