What causes a jaguar x type 3.0 to read engine system fault fail and gearbox fault.
Since all the lights are on, a code or codes are stored in the system, have the car scanned. Off the top of my head, it could be related to the throttle body but check the codes to make sure. The TB might be full of carbon and just need a good cleaning, or maybe something more serious. We can only guess till you have the code.
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