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Unknown alarm ringing in my 2005 Jaguar S

After sitting for 3 weeks there is a continuous bell ringing in my 2005 Jaguar S. It sounds like a continuous seat belt warning.

You’ve probably hit the nail on the head, and it is a seat-belt warning you’re hearing. Even though you may have the belt properly fastened, if the sensor that is supposed to detect the seat-belt being latched is not working, then the car will think you’re driving around unrestrained.

Jaguars of this era were not universally known for the quality of their electronics, so it’s very possible that this is precisely the problem. The catch then is that you need to check each seat-belt for a dud sensor, and there are five of them in the S Type. Other things that could trigger the same sort of alarm could be that the park-brake is not fully released or that there’s a door or bootlid ajar. Check it all and rule things out one by one.

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