I have a '94 XJ6 Gold 4.0l Auto ,it was fitted with a Jaguar encrypted rolling code immobiliser in 1998 by Grange Jaguar (I have the original certificate).Yesterday I started the car as normal,ran it for 15 mins,then switched it off.Usually a few seconds after switching off there are two tones from the alarm system,but I cannot rember hearing them.Now the car will not start or turn the engine,it is just like if you are trying to start the car when not in park or neutral.What can I do,I'm a long way from any Jag dealers and it is quite an old car

Any codes logged?? Poss wiring fault, short somewhere maybe

Check immobiliser switch (fitted to drivers side footwell on Right hand drive cars) designed to kill engine and fuel pump if car turns over. Sometimes jumping the kerb can set them off. Also check central electrode in distributor cap.

It means that one of your outside lights are not working. I had that on my dash too. Luckily I got the original book with mine. Hope it helps.

Immobilisers have been mandatory in all new cars sold in Germany since 1 January 1998, in the United Kingdom since 1 October 1998, in Finland since 1998, in Australia since 2001 and in Canada since 2007. Early models used a static code in the ignition key (or key fob) which was recognised by an RFID loop around the lock barrel and checked against the vehicle's Engine Control Unit (ECU) for a match. If the code is unrecognised, the ECU will not allow fuel to flow and ignition to take place. Later models use rolling codes or advanced cryptography to defeat copying of the code from the key or ECU. You do not say where you live. So have to be a bit generic. Hope this helps.

I had this when I first got my 1991 XJ6 (XJ40). I contacted my local Jaguar dealer with the problem, and from the chassis number, he was able to give me the correct security code for the radio. If your car has the original radio still fitted, as mine had, then your local dealer should be able to do the same for you.

Had similar problem which ended up being the Park Gear selection position. Do you get a beep noise when out of gear? What about when in park. Although my car was in Park, it needed wiggling out a little while turning the ignition to get it to crank and has been this way ever since.
Also had a Sovereign with an immobiliser that gave me the same no start problems some times, no solution other than an expert auto electrician for that.

Sounds like it could be the traction control light?

This is not original jaguar ,this is a boy racer add on alarm fitted .Cut it out and throw it away or it fail on you one day and car will not start in the middle of nowhere

You'll need to call a Jag dealer and prove you own the car legally. Be prepared to show a bill of sale, a title, and the vehicel's VIN.

Hi

Disconnect battery overnight, if flat in the morning, fit a new battery !

Good Luck !

A Fixya rating would be nice thank´s...John.