OBD11 tool and everything works fine ??? That'sjust for the engine computer ! Need a professional type scan tool to view instrument cluster data . The instrument cluster has a microprocessor inside an can set DTC'S - diagnostic trouble codes , separate from OBD2 . A bad cluster could bring down the Serial data network causing all kind of problems . Do you know what a data network is ? Your ford has SCP network .
Communications Network Information Module
Check your connections on the battery and the ground straps to engine to frame and frame to body.
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Dunno about that, another guy had his diagnostics gadget plugged in but failed to find the hassle. Right now it's easier just to keep the little Bluetooth OBD tool plugged in whenever I want to go someplace then unplug it when I get home
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