Question about 2000 Jaguar S-Type

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Engine failure mode message on display

Jag S type 3Ltr shows engine fail mode message, but car runs and sounds well and completes 200 mile journeys uneffected

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  • keithhopwood Feb 09, 2009

    Thanks John

    I will do this, your advice sounds good,

    will report effect soon,

    Thanks again




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Hi Keith

Probably those little Jag gremlins at it again ?

First thing to do is clear the computers memory, which normally does the trick.

Disconnect both battery terminals, switch on the ignition to start 6 times, this wipes the computer memory, and then reconnect the battery, the Positive + first......... then the Negative -----

Start the car and go from there.

Suspect you had a low battery previously, and this tripped the warning.

Get the battery checked, if it is the original, as it is now 8yrs old, and should be replaced.

Good Luck !

A FixYa rating would be appreciated Thank you !


Posted on Feb 09, 2009


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I have jag 2000 s type im getting enigne fail safe mode sign i went jag dealer they gave bill of $1093.89but problem is still there i have 129000 miles on it ,when sign comes i feel little bit of power...

First try to find a Good Independent Jaguar specialist, as these tend to give much better service on difficult problems than the main dealers who always seem to just want to put new parts on your car and give you a massive Bill ! Fail safe mode can be caused by many things. faulty temp sensor - throttle position sensor - air flow sensors- faulty coils - the list is endless ! Get the codes read on your car by a specialist - this history will show areas where the fault lies. If the codes are not too clear a running monitor test on your car when in use can help to identify the problem area. But make sure you take it to a GOOD garage ! Don't panic as the fact that the car is still drivable and the fault resets when restarted shows that the problem is in one of the electronic sensors - components or could even be a corroded wire in a cable loom. There is a list of known problem areas and reoccurring faults that will be known or accessible to a Jag specialist or Good Garage. Hope this helps - good luck.

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The other possibility is failure of the secondary cam chain tensioners. If you hear a clattering sound when you start the car, turn it off immediately and have the car transported to a good Jag shop. They can replace the plastic tensioners with metal ones for around $3,000. (Rough guess.) Make sure they do the same with the plastic primary tensioners and chain guides, and replace the chains. Failure to take this step after you hear the first symptoms will result in engine failure.

Also replace the plastic water pump and thermostat with alloy units.

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