My 2005 F350 super duty diesel goes crazy when I put the keys into the on position. Never seen anything like this. Any ideas?
Your car is trying to learn Morse code. You should support it in its efforts
Your battery is not dead, but it doesn’t have enough juice to spin the starter. The clicking is the relay for the starter. Could also be a loose connection on the battery.
My Ram 2500 did this with a bad battery. Could be the same thing, but my Ram was a 2020 with more electronics than your 05. Vehicles get wonky like this with voltage issues.
Could be a dying battery, a loose connection on the battery terminal, or excessive buildup on the terminals.
Batteries! Replace both, even if one tests good.
Battery low. Stop. Getting Dark. 73.