Authorized Modification J004 - what is it?

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Oct 5, 2025 | 05:41 PM

Hellothere

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Authorized Modification J004 - what is it?

I have a 2004 XJR and under the hood there is a sticker that says an “authorized modification” J004 was completed 3-4-09. Anybody know what that is? Thanks

Oct 6, 2025 | 07:23 AM

Jaroslav Záruba

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Sounds like a modification made as a result of a technical service bulletin...?
For example, see this PDF for S527: PDF for Technical Bulletin S527

Last edited by Jaroslav Záruba; Oct 6, 2025 at 07:26 AM.

Oct 6, 2025 | 09:33 AM

Lagonia

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Joined: Oct 2013

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From: Austin, Texas

PDF that describes the J004 recall
https://www.jaguarforums.com/forum/a...691d1611240986

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