Hi Scholar,
Did you ever get this resolved?
After 20 months with no problems since I reported that issue in the other thread, my battery went dead last night in the garage after being parked for only 2 days. My wife last drove it Thursday and she said did see the dreaded "battery discharge due to external devices" when she started it at home Thursday morning at 7:45AM. The car started okay and she drove it to work. The car started for her fine at 5:10pm Thursday and she drove home and parked it in the garage at 4:50pm and locked it.
We were going to use it for a local trip at 3pm Saturday and I couldn't unlock the door with the fob or the handle button. I had to pop the handle cover off and use the manual key. No lights came on, no chime, no cluster... the battery appeared dead. I didn't have time to mess with it then and we used another car of ours for our trip.
When I got home at 9:30 I popped the hood and measured the battery voltage at the access terminals with a DMM and it was at 4.4 volts. Knowing that the car is in the garage and that I could not even open the trunk manually (latch releases with key, but is resistant to open against the dead motor) , I applied a 6 amp charge from a trickle charger. By 12:15am (~3 hours I was up to 10.9v). I unplugged the charger and went to bed. Woke up at 6:30am this morning and checked. The battery dropped 1v down to 9.8v in just 6 hours. It's now back on the charger and now a little over 12v.
Knowing that the car is almost 2 years old and has 17k miles on it and has had a previous battery drain incident I suspect the battery is failing. I'm going to get it started to take it out of the garage. I'll call KIA service and get an appointment to my dealer to replace the battery and check the electrical system.
2019 K900 VIP trim
Deep Chroma Blue exterior | Sienna Brown interior