When shutting off my '95 XJS, the electric fan continues to run, which is normal, but it's supposed to eventually shut off. On a few occasions it simply hasn't. This doesn't always happened, but we discovered that this was going on when it eventually ran the battery down. It's happened a few times lately.

Obviuosly there's some kind of faulty sensor or relay. Does anyone know where it's located and how to replace it?

(We don't have a Jag dealer around here.)

Many thanks.