This is not my week for vehicles, so I am really running scared. My 1 year old Optima Red Tops were drained to less than 4 volts in 24 hours after it had ran fine. Looked for drains to no avail, but found that the alternator wire was cracked and worn through in a few places. I had three codes 0483, 0480, and 0602. Once I charged the batteries, I tried to engage the cooling fan by turning on the AC and it stuttered a few times but didn't really engage. New fan clutch will be here in a few days. I hate waiting to see if an issue resurfaces. Anyone ever have this happen?