2003 JAGUAR X-Type AJ30/AJ30D (X400)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Front suspension bush wear
• Rear hub bearing failures
• Electrical gremlins in early models

First checks

• Inspect timing chain condition at high mileage
• Check automatic transmission fluid level and condition
• Fuel system health on diesel variants

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

• 2003 was the early production phase for X-Type with minor updates from launch in 2001/2002 depending on market.
• Engine availability and specs vary by region: diesel mainly Europe and select markets, petrol V6 globally.