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I have taken the battery cable off, just not during this latest behavior. I also did swap the RCM but did not wait for a fan to 'warp up' after 30 seconds. Battery 12.8 volts with no engine running and key on. Car was cold out of the garage when first happened, truly a strange one here.
Will check for codes this morning, until I can figure this out the XF is parked (do not need a tow to home if stuck out somewhere).
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