Hi Josh,
You have me puzzled. The vehicle model appropriate to 2005 would be the x244, and the 2.5 TD engine was not fitted from 2001 onwards.
It may be that you have a vehicle that was stored for a very long time.
To get appropriate advice please confirm your vehicle model number taking the first three numbers from the VIN number. e.g. ZFA244.........., or ZFA230...... Also engine type number, the 2.5 TD could be an Iveco 8140.47, or a PSA engine.
Please follow link to
Wikipedia, and scroll down to second generation, or 2002 facelift sections.