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dangeruss13 01-21-2021 07:48 PM


Originally Posted by Bob Johnston (Post 24849)
Well my battery depletion issue came back yesterday. The car had been parked in the garage for 5 days and not started but I had been in and out of it unlocking/locking with the welcome theatrics a few times during the week. I'd also been in the trunk as well during this parked time.

I knew something was wrong when the driver door would not unlock with the fob in my pocket. I was able to unlock with the press of the unlock button the fob. Once I got in, the car would not start. Says it could not detect the fob and to press the fob against the start button. Still nothing. I went back into the house to grab the other fob and same thing. Then, on the cluster I saw the message about "battery drained due to plugged in devices" which was not true. Nothing was plugged in at all. The battery was so weak, I couldn't open the trunk. FYI, the physical key in the fob can unlock the trunk, but the electric motor's grip on the actuators still puts great resistance on actually manually lifting the trunk lid. This is definitely a design flaw so be careful about putting a battery jumper in the back trunk because if your battery dies, you won't be able to get the trunk open.

I then opened the hood and found the jump points for the electric in top left corner. The positive and ground points are in two different locations and the little pigtail on my little lithion battery jumper could not spread to reach both points (This is something I would not have expected). I tried another portable battery jump starter I had that included longer cables and attempted to jump start the battery but that jump starter was not fully charged itself and the attempted jump failed to fully start the car.

At this point, I called the KIA concierge and they dispatched a service to my home to jump start the car but it was over a 90 minute wait. I grabbed my 6 amp trickle smart charger and charged the K900 battery for a good 20 minutes. I also charged my jump starter for 15 minutes as well. I then pulled the trickle charger off and put the jump starter back on and then successfully started the k900. Using my digital volt meter, the running car was sitting at 13.1 volts. This told me that the battery was still pretty weak and was taking all the current from the alternator that it could handle. I then called back KIA and told them to cancel the service coming out to my house as I didn't need them anymore.

I kept the car running for about 40 minutes and drove it for some errands (never turning it off). When I got home, I checked the voltage and it was sitting at 14.2 so it seemed like the battery was leveling off with the charge. On a side note I really wish the car had a voltage meter somewhere on the cluster.

I've scheduled an appointment at one of my local K900 dealers to check the electrical system in a couple of weeks. This battery drain thing is happening only after days of the car not starting but accessing the car via unlocking, opening doors, trunks, etc... My guess is that there's something pulling way too much current when the car wakes up to do the welcome acknowledgement, operate the power locks and trunk and continues to stay active although the car never is started. Either that, or the battery I have is just a plain dud. Either way I'm going to get to the bottom of this problem. The car should not deplete it's battery for sitting for 5 days regardless of unlocking/locking it and operating the trunk occasionally.

I'm also going to have them adjust the low beam cutoff up a little as I think it's throw is a bit short when they are checking the electric.

I'm experiencing the exact same thing. We've had the car for 1.5 years now, and already had the battery replaced under warranty. Went to start it after a few days of sitting and it was completely dead. Multimeter shows at 4.6. Anyone have any updates on what the causes might be? UVO staying on? We unplug the usb iphone charger, lock the doors, make sure lights go off and everything...bought to trade this car in, even though we love it. :( Just bought one of those noco 10 amp wall chargers and their jump-starter. Here's hoping one of the two work as this is our only car.

Bob Johnston 01-22-2021 12:03 PM

After sporadic issues with drain for 2 years, just this week I bit the bullet and had an independent shop (owned by a friend) replace my OEM battery with a new premium AGM 95R. It was $300 out of my pocket but I'm hopeful my issue was the KIA AGM batteries are just defective.

mdude 03-21-2021 09:15 AM

I prematurely replaced the battery given its age (3 years) w/ a Duralast from Autozone. Paid $220 +/- out the door, Autozone guy was nice enough to install it for me on their parking lot.
Called Kia and they asked for $350 so choice was obvious.
Shortly thereafter I brought the car in for annual service and the manager said the Duralast provides even more cold cranking power than Kia's OEM. It's actually larger than Kia's, as I recalled the Autozone guy had to adjust the mounting bracket to fit it in.

KimInKS 03-22-2021 12:26 PM

I just purchased a 2020 last October. I can't find anything I don't like about it so far. For everything is has on this car the price was unbeatable.
I'm only sad that they are going to quit importing these into the US. That said, it is very cool that you don't see another K900 anywhere. In fact, I was the first to register one in Sedgwick County Kansas.

josh300c 03-29-2021 05:44 PM

New 2019 K900 owner (Lakestone)
Just purchased my K900 this month. Very happy with my purchase. Only problem I had was with vibration at highway speeds. Come to find out the tires were not balanced.
Also, a little underwhelmed by the interior mood lighting. Seems that the dark black interior really sucks the intensity and brightness of the colors.

Any one know where's a good source for accessories?

K900 Pilot 03-30-2021 07:38 PM

Congratulations on your great new car and always safe travel! Here is the Kia accessory site:

I do not have the black interior and think the mood lightning is decent enough and by far not as brassy compared to the new Mercedes S-Class

josh300c 04-02-2021 11:53 AM


Originally Posted by K900 Pilot (Post 27409)
Congratulations on your great new car and always safe travel! Here is the Kia accessory site:

I do not have the black interior and think the mood lightning is decent enough and by far not as brassy compared to the new Mercedes S-Class

thanks! Fair point about the mood lighting.

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