2020 Ford F250 W/ 7.3 Gasoline Won't start when >5*

Asked by Michael Feb 19, 2021 at 06:21 PM about the 2020 Ford F-250 Super Duty

Question type: Maintenance & Repair

On cold days (>5*) truck is totally dead. Not a light, beep, or click. As if the battery was totally removed. Check battery with Voltmeter and battery is fine... Booster pack or Jump "might" get things started, but not always. Once above 6* or so it starts and runs perfectly on it's own... Any suggestions? Has been to the dealer twice but problem can't be replicated outside of the freezing temps... Thanks!

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