Why does transmission light come on and off on a 1990 xjs jaguar?

The transmission light on a 1990 XJS Jaguar may come on and off due to a variety of issues, including low Transmission Fluid levels, a faulty transmission fluid temperature sensor, or problems with the transmission control system. Intermittent illumination can also suggest that the transmission is overheating or experiencing a malfunction. It’s advisable to check the fluid levels and condition, and if the light persists, have the vehicle diagnosed by a professional to prevent further damage.