Why is dash light for door open on but doors closed on jag?

The dashboard light indicating that a door is open when all doors are closed in a Jaguar could be due to a malfunctioning door sensor or switch. Dirt or debris in the door latch mechanism can also affect the sensor's ability to detect whether the door is securely closed. Additionally, electrical issues, such as a short circuit or faulty wiring, may cause a false signal. It's advisable to have the vehicle inspected by a professional to diagnose and fix the issue.