[DonDerse]

@DonDerse, maybe ambient temperatures played a role. Was it warm where you were charging? I've not seen any L2 throttling before or after the update, but my garage is cold this winter, generally between 50 and 60F.

@gmwalk, I wouldn't expect the battery to heat up much at all with L2 charging. More likely the inverter would get warm, and I often hear a fan running when L2 charging for a while. DC fast charging would be a completely different situation and that's where I'd expect the battery being too hot or cold to result in throttling.

As for my temperatures when charging, I am in St. Louis. The first charge after the TSB my garage was probably 35 degrees. The second time it was 50 degrees. No difference. My next step is probably to go back to what I did in the summer months, put a fan on the charge port. That allowed full speed charging in 80 degree heat.

 

[Josheb]

As for my temperatures when charging, I am in St. Louis. The first charge after the TSB my garage was probably 35 degrees. The second time it was 50 degrees. No difference. My next step is probably to go back to what I did in the summer months, put a fan on the charge port. That allowed full speed charging in 80 degree heat.

Can you show your fan set up? I might have to adopt this lol

 

[DonDerse]

Can you show your fan set up? I might have to adopt this lol

I do not have it set up now. I put it all away. I was resigned to charging slowly until this fix. I simply ran a tall vertical style fan and pointed it at the charging port. It kept the charging port area and charging handle cool and charging worked at 10+ kw per hour without charge interrupted.

 

[smoove ride]

Datapoint.. got the TSB done yesterday and charged from 50% to 80% at 10.8-11.0kw/h on our Chargepoint Flex. Worked great, no throttling or failed to charge. Garage temps were 65-70F. The only way to do this before was the fan set-up as mentioned above.

 

[DonDerse]

Interesting development after TSB. I have had all the failed charging issues. I went in and had the TSB done. It stopped the "failed charging" errors and allowed the car to continue charging. However this is not fix as it seems that all the software change does is throttle the charging speed down low enough to not create the problem. I normally charge at max level 11.4 kw. After the software fix, when I charge the speed starts at 11.4 kw. Within and hour or less the speed drops to 7.8 kw. It remains there for the remainder of the charge cycle. I tried this also after changing the kia's charge current level option to medium. Same thing happened. It charged at 10.2 kw for an hour and then dropped to 6 kw. Terrible.

I knew in the past this was a heat issue and when I put a fan on the charge port while charging I could usually get the car to charge completely, without interruptions at the medium level even in the summer. Now with the TSB fix done, I decided to try the fan trick again. I charge at max charge level, (Charge point flex 60 am) which is 11.4 kw. The garage temperature was 50 degrees. The car charged at 11.4 for 45 min and dropped to 7.8 again. This is despite having the fan on the port door. The charger handle was no hot to the touch so now I am really confused. I may try it again at the reduced charge level with a fan. However this is not acceptable to have the car only able to charge at 7.8 kw max. It seems like the software fix for me does nothing but drop the charging speed so low as to avoid the failed charge issue. I have another appointment to take it in to service in 2 weeks.

 

[Josheb]

Interesting development after TSB. I have had all the failed charging issues. I went in and had the TSB done. It stopped the "failed charging" errors and allowed the car to continue charging. However this is not fix as it seems that all the software change does is throttle the charging speed down low enough to not create the problem. I normally charge at max level 11.4 kw. After the software fix, when I charge the speed starts at 11.4 kw. Within and hour or less the speed drops to 7.8 kw. It remains there for the remainder of the charge cycle. I tried this also after changing the kia's charge current level option to medium. Same thing happened. It charged at 10.2 kw for an hour and then dropped to 6 kw. Terrible.

I knew in the past this was a heat issue and when I put a fan on the charge port while charging I could usually get the car to charge completely, without interruptions at the medium level even in the summer. Now with the TSB fix done, I decided to try the fan trick again. I charge at max charge level, (Charge point flex 60 am) which is 11.4 kw. The garage temperature was 50 degrees. The car charged at 11.4 for 45 min and dropped to 7.8 again. This is despite having the fan on the port door. The charger handle was no hot to the touch so now I am really confused. I may try it again at the reduced charge level with a fan. However this is not acceptable to have the car only able to charge at 7.8 kw max. It seems like the software fix for me does nothing but drop the charging speed so low as to avoid the failed charge issue. I have another appointment to take it in to service in 2 weeks.

That sucks! Let me know what they say at your appointment, I'd also like to be able to charge at high speeds again. TSB keeps me sub 8kw as well.

 

[smoove ride]

Damn.. well, first charge after TSB went fine. Not today! Charged from around 25% to 80% and it charged at ~11kw for 2 hours then bumped down to ~7kw for the rest of the way to 80%. Bummer. Before it would charge at ~9kw at the reduced rate the full time. Anyway we can submit/relay to KIA that the TSB made it worse?

 

[smoove ride]

Interesting development after TSB. I have had all the failed charging issues. I went in and had the TSB done. It stopped the "failed charging" errors and allowed the car to continue charging. However this is not fix as it seems that all the software change does is throttle the charging speed down low enough to not create the problem. I normally charge at max level 11.4 kw. After the software fix, when I charge the speed starts at 11.4 kw. Within and hour or less the speed drops to 7.8 kw. It remains there for the remainder of the charge cycle. I tried this also after changing the kia's charge current level option to medium. Same thing happened. It charged at 10.2 kw for an hour and then dropped to 6 kw. Terrible.

I knew in the past this was a heat issue and when I put a fan on the charge port while charging I could usually get the car to charge completely, without interruptions at the medium level even in the summer. Now with the TSB fix done, I decided to try the fan trick again. I charge at max charge level, (Charge point flex 60 am) which is 11.4 kw. The garage temperature was 50 degrees. The car charged at 11.4 for 45 min and dropped to 7.8 again. This is despite having the fan on the port door. The charger handle was no hot to the touch so now I am really confused. I may try it again at the reduced charge level with a fan. However this is not acceptable to have the car only able to charge at 7.8 kw max. It seems like the software fix for me does nothing but drop the charging speed so low as to avoid the failed charge issue. I have another appointment to take it in to service in 2 weeks.

Let us know what they say. Can they undo the TSB? If so, sign me up!

 

[Bkaklinv]

Mine does the same thing since the TSB was applied. Starts out around 10.4 then throttles.back to 5-6 give or take.

 

[Eternalhope]

No, in fact it doesn’t even show up in the dealer’s system as a regular recall. It’s specificed on the tech bulletin to only do it if the customer is experiencing the issue. I had to ask for it by name several times over and insist I needed it done as multiple people in the chain tried to tell me it didn’t apply to my car or wasn’t available etc etc etc

I have a ChargePoint50 - charges at 48 amps on a hard-wired 60 amp circuit. But the subpanel where the dedicated circuit is located, also has a 60 amp breaker coming from another 60A breaker in the main panel. The one in the main does get warm after a few hours and usually has problems not tripping. I imagine this is a different problem than the car itself shutting down the charge.

 

[avh]

I don't experience the issues after applying the TSB I use Emporia EVSE and is set to change at 40 Amps, I usually charge from 30-40% to 80% and it stays constantly at 9.75 Kwh for the duration of the charge, around 3 hours.

 

[tonester]

I don't experience the issues after applying the TSB I use Emporia EVSE and is set to change at 40 Amps, I usually charge from 30-40% to 80% and it stays constantly at 9.75 Kwh for the duration of the charge, around 3 hours.

Wait--so your outlet consistently puts out more than 240V?

 

[avh]

Apparently it does, when the solar panels are generating power the voltage is slightly higher than the grid.

 

[CAPCOM]

Thanks for sharing your experience, that's great to hear. I'm very curious what the software update actually does to resolve the issue. Seems like it has to be one of three things, either it's:

1. Telling the car to stop worrying about the heat and just keep charging

2. Altering something so that less heat is generated

3. Reducing the charge speed as needed when the charge port gets too hot.

But by the sounds if things, reducing the charge speed isn't what they're doing.

Based on my first charging experience after getting the update, it is doing option three. After about an hour, charging power dropped from 11 kW to about 8 kW in there shortly after that down to about 7 kW were remain until charging completed.

 

[Spanbauer]

Based on my first charging experience after getting the update, it is doing option three. After about an hour, charging power dropped from 11 kW to about 8 kW in there shortly after that down to about 7 kW were remain until charging completed.

That’s concerning, although still preferable to discovering in the morning that your car stopped charging entirely after an hour.

Still too cold where I am to know how mine’s going to behave with the “fix”.

 

[Lowflyer777]

I started experiencing the failed charging back in Aug of 2022 at around 4k miles; no issues prior to this on my 03/22 build delivered 06/22...Port and VCMS replaced in Sept 22', still had the issue. Dealer took the car back in Oct of 22' and had it until Feb of 23' trying to figure out why the charging was failing...Post TSB update, my car exhibits the same behavior mentioned here on 3 different chargers, two at home and 1 at the dealership; a software throttled charge where it would previously fail. Initial charger was a Juicebox 40 on a N14-50 connected to a 50A circuit. Second charger is a Juicebox 48 and my whip off the charger is hardwired directly to a 60A circuit on the panel...No splicing, junction boxes etc... Car starts at 11.2kW + or - and then drops to 7kW after an hour or two leaving me with not enough charge for my 170mi commute at 4 a.m. Extremely frustrating. This makes the "leave by" function useless as well since the car thinks it's gonna charge at 11kW/h only to be ultimately throttled to 7kW/h. My TOU period here in San Diego is from 00-0600...The fact my car needs to start around 2000 (on-peak/most expensive) to be ready by 04 at 7kW/h is stupid when 11kW/h is available. During my cars stay at the dealership, I had 4 different loaners...A Kona EV, Niro EV, Leaf, and another Niro EV which never had any problems on the JB 40.
Side note and something that's interesting...All these cars pulled a full 7.5 kW/h from their onboard chargers...My EV6 was always around 7.2, 8.2, 9.2, and now 11.2 with the current JB48...This leads me to believe there is something wrong with the inverter...There's 242V available at my panel and the car is always 235-238 under load. Something stinks and it's this dumpster fire of an EV Kia put out before it was ready for prime time IMHO. I'm open to suggestions.

 

[NohGa5]

Just curious...has anyone contacted or heard from Kia corporate about these VCMS issues? I would stop dealing with the dealers and go directly to corporate and pester them for answers. Apologies if this was answered in the thread already.

 

[Lowflyer777]

Just curious...has anyone contacted or heard from Kia corporate about these VCMS issues? I would stop dealing with the dealers and go directly to corporate and pester them for answers. Apologies if this was answered in the thread already.

My initial complaint started with them and after my dealer had the car for over 3 months they stopped communicating with me. This might also be because I'm pursuing something else with KIA I'm not at liberty to discuss in open forums, but if you know, you know.