Question about 2000 Jaguar S-Type

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Disconnected the battery to perform maintenance on the climate control unit. Had the climate control unit rebuilt and reinstalled it. Reconnected the battery and the car will not power up. No nothing. I suspect the passive theft control system has done its job and is keeping the car immobilized. How do I reset the PATS and or whatever, and get my car back on the road?

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  • Wayne Brendel Dec 30, 2010

    - There are no lights. The car acts as if the battery has been removed. Battery is charged and all connections are tight. Car/battery were fine before I removed the climate control unit. The car has somehow been immobilized.

  • Wayne Brendel Dec 30, 2010

    Can't be an undone none have been disconnected except the battery cables...and they are back on tight. I will look for a big main fuse...that sounds logical.....but will be unable to do so until Saturday.

    May we leave this case open until I can check the fuse?

  • Wayne Brendel Jan 03, 2011

    -Battery cables are correct.

    - Cannot locate a "battery" fuse and there is not one referenced in any of the three fuse box diagrams. But, something has blown somewhere between the battery and a primary electrical distribution center. No power is getting through.

    - Battery voltage checks good. Don't know about amperage output as I have no amp tester...but, the battery has been OK prior to this situation.

    - Is there a circuit board in the main fuse box in the trunk next to the battery?



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  • Jaguar Master
  • 8,270 Answers

Hi, if this was a PATS problem, the theft light would be blinking fast--is it?
If not, check to make sure the battery terminals are tight and try a jump start.

Please see my tip at . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Posted on Dec 30, 2010

  • 2 more comments 
  • Jeff Turcotte
    Jeff Turcotte Dec 30, 2010

    OK, that's not the PATS system doing that. Check in the main relay box by the battery for a big main fuse. If it's not a fuse, there must be a cable undone.

  • Jeff Turcotte
    Jeff Turcotte Dec 30, 2010

    yes, no problem.

  • Jeff Turcotte
    Jeff Turcotte Dec 30, 2010

    Hi, I have looked at your fusebox and don't see any fuse that could cause this problem. Is it possible the battery terminals are backwards? I did that once on a Jag, because I was confused by the B junction that looked like a ground point to me. :o(

  • Jeff Turcotte
    Jeff Turcotte Jan 03, 2011

    Hi, there is no circuit card in the fuse box. What you may have is a blown fusible link. Do you have a 12 volt test light? Check the battery cable by clipping your test light to engine ground and touching the probe first to battery positive--it lights, right? Now probe where the battery cable connects to the engine or fuse box--wherever it goes. If you don't get a light there, the cable/link is bad. If it lights, open the fuse box and start probing inside. There is also a test you can do at the starter with a screwdriver to see if there is power at the starter. It is test #2 at this link:

    Be careful with that one. Sorry I cannot be there to help you--wish I could because this is a tough one.



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