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My 11 6.7 F350 SD Lariat is garage-kept, so maybe I notice this a little more than I should, but when I exit the truck, all lights remain lit, and then after a bit, I hear a low beeping sound and all lights go off.
Last night I exited the vehicle, there was the beep, the lights went off, but every 15 seconds or so, the beep sounded again, only this time without the lights. What was it doing? To get it to stop, I had to start the truck, then shut it down.
I'm assuming the beep is normal, but I don't think the repetitive beeping of last night was... thoughts?