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Intermittently, I get my fault lights coming on and car goes into limp home mode. I get park brake fault, dcs unavailable, engine malfunction, and on the other side I get cruise unavailable. The idle shoots up to 2000 rpm. Car will not go over an idle even in drive. Sometimes I can restart it and it clears right up, other times it will not. I have changed the battery as suggested by the jaguar forums, but even they are scratching their heads. I am ready to trade this thing in, if I can get it running again. Please help.