2021 - 2022 KONA Electric - Check Electric Vehicle System Error

It's almost fully charged. I finally was able to get the dealer's service center responded and towed the car there last Friday on 1/14/22.

There were a couple issues on the day when the car was being towed. The tow truck driver was not able to shift the gear back to park and close the driver side window after he loaded the vehicle onto the flatbed of his tow truck. I am still waiting for an update from the dealer's service center.

 

Sorry for both the late reply and the troubles you are having with your vehicle. We only had the one malfunction of the battery and no other symptoms.

I should update. We drove the vehicle with an 80% limited battery with the dealers consent for the past three months. We were supplied with a rental ICE the entire time to cover longer trips. In my opinion the bms worked exactly as it should. It immediately locked us out of using the bad cell. The dealership later confirmed this by software limiting us to 80%, letting us use the car and ordering a new battery. The new battery was installed a little over two weeks ago and all is good with us.

 

Hello all-
2020 SEL not quite two years old with high mileage (55K) has had a nasty regenerative braking issue that took two months, and now the CEVS lockout. Dealer is saying a new EV battery is needed. Will see how long it takes to be delivered.

 

What do you mean by "lockout"? Is your car subject to the battery recall or was it manufactured later?
*Edit *

 

I am going to guess that his reference "CEVS lockout" is error condition that causes "Check EV system" flag can also potentially immobilize your Kona completely until the dealer sorts it.

 

Yes, sorry, I was too bothered to write the entire Check Electric Vehicle System phrase and decided to start an acronym. I did not have a recall. This error would only let the car shift between Neutral and Park. The system felt like it was only in accessory mode and the main battery was not engaged.

At the end of August, 2021 my car got a check regenerative brake system error. This made the car only able to go about 10 MPH and very difficult to brake. The car was towed to the dealer. They initially did some software updates that cleared the error. It re-occurred once again in early September, but cleared up when I went in reverse to turn around. I drove without problems for 5 days when the error came back. The car was towed (again) to the dealer. That ended up with a new brake module, but it took two months to fix.

Once I got it back, I noticed that my full charge range had dropped from usually 255-270 miles to closer to 230. It also seemed to be taking longer to charge. I took it in for this and they said it had a "hidden" error code and needed a new charge modulator/controller or something. The full charge distance crept a little higher but never got back to the 260 range.

Now, with the EV battery needing to be replaced, I am in another loaner, paying for gas, for probably another few months. The dealer has been great about taking care of me as best as they can, but I do feel cheated because I have to pay for the car, pay for gas, and lose my HOV lane pass that the EV gets me, so my commute is longer every day. Hoping on the plus side that the new battery will still have 100K mile warranty and that I saved myself a few years of warranty extension.

 

Ugh. What a saga. I hope you get a satisfactory solution sooner rather than later.

 

Got my car back. Accelerator pedal assembly replaced. Drives great. Also, somehow they managed to kill the 12 volt battery while they had it so I got comped a new OEM 12 volt! A few more visits and literally the entire car will be all new. *Please, Lord, no more visits...

 

I got my 2020 Kona SE two years ago this month. Mostly problem-free except for some debris trapped in a brake rotor that caused squealing. I drive it pretty hard, usually in sport mode with regen at 3, and I typically charge it up to 80% with my level 2 charger unless I need extra range for some reason - I’ll go up to 100% maybe twice a month.
Last weekend was one of those times. I charged it up to 100% overnight (in a hot garage; I’m near Sacramento), and the next morning I get the yellow triangle ! and it will only shift into park and neutral. I had it towed to the dealer where I bought it. Their service department is extremely busy so they said it could take a while. I’d had a service appointment scheduled for next Friday anyway, so I can hope they’ll at least look at it then….

 

Good luck with it. Don't jump to any conclusions about the cause being related to charging to 100% or the heat. It seems like the "check electric vehicle system" light is a real catch-all for every problem from major to piddling.

 

Heard from the service rep at the Hyundai dealer this morning. They’ve ordered a new main battery so I expect it will be several weeks before I get my Kona back.

He did say that Hyundai would reimburse me for towing and rental car costs, though, so I’m saving my receipts.

 

Joined forum today to check on this fault and found that this cleared the fault for me. 2022 Kona EV Limited, US, 5500 miles. Fault Appeared after charging to 100% off a Level 2 AC Charger (Enel Juicebox). Should note that I used a Chargepoint DC charger earlier in the day to charge to 60% to have enough juice to make it to where I was going. Funny enough, the fault appeared after I opened up the owners manual for the first time and was curious if my car had a Heads Up Display after coming across the entry (it didn't). Started my car and the fault came on. After seeing some posts about the 12v battery possibly being an issue I did notice that the yellow LED light above the Hyundai logo on the front was lit up prior to me starting it. Learned that this indicated the 12v battery was being used for something. So I crack open the hood and I heard some subtle "clicking" noise under the 12v battery. Uses a Fluke Multimeter to check voltage and while it was turned on I was getting almost 15v from the battery and while off, it was almost 13v. I'm not very car knowledgeable so I don't know if those readings are normal. I decided to just disconnect the positive terminal for like 10-20 seconds and then reconnect. It cleared the fault but I'm still planning on taking it the dealer ASAP just to be on the safe side. Hope this helps.

 

I've join the club.
After charging my 2022 Kona ev, I went to start it and I recieved this error. "Check Electric Vehicle system "
Used my battery booster, tried jumper cables, tried unplugging the positive connector of battery. No luck.
Car is being towed to dealership now.
Bought it in September 2021 and have put on about 37,000 km. Never had a issue until now.
Hopefully something small, but will see.

 

I just purchased a brand new 2022 Kona EV SEL in June. I have driven it about 5000 miles and just the other day the car stopped while I was slowing down at a light. The "check electric vehicle system" light came on, and I was left in the middle of a busy road not able to move. Luckily it went away in 20 minutes and was not injured. I was able to take it to my Hyundai dealer. They are telling me a part of the EV battery failed and needs to be replaced. The part is on back order and they have no idea when it will be in. Furthermore, I have not been given a loaner car while I wait it out. I am left to rent a car and spend money on gas, all while paying for my EV that I cannot drive. Has anyone come across this issue and can provide advice? I am hoping for the best but fearing the worst. I have always had a good opinion of Hyundai, but this situation has given me a bad taste for them.

 

Of course the dealer should provide a rental or loaner for the duration of the warranty repair. Insist on it. It's unfortunate that they are trying to stiff you. You'll need to dig a bit deeper into the actual cause of the fault if you want feedback from the group and their experiences. Ask for the fault and parts ordered. It's your car. You certainly have the right to that information.

 

I wish you the best of luck as my situation resulted in a battery replacement that took 6 months to resolve. I did receive a rental car on Hyundai's dime but am still in "negotiations" for the $850 that was promised to the 2019-20 recall owners.
Hopefully this is in fact a fault with a different component than the HV batt.

 

Update: seven weeks after my Kona EV was towed to the dealership, they called me to let me know the battery replacement was complete. I picked it up, drove it away, and it seems to be fine. I asked if this would reset the warranty on the battery to 10 years…it does not.

Just to stay on the safe side I plan to limit the charging to 80% of capacity unless absolutely necessary.

I’m seeking reimbursement from Hyundai for the cost of towing, car rental, and fuel. I scanned all my receipts last night and uploaded them to Hyundai. Apparently the reimbursement can take up to 45 days.

Mostly I’m just really happy to be driving my Kona again. I didn’t realize how much I enjoyed it until I had to drive a Jeep Compass for 5 weeks.

 

A Jeep Compass? My word, what a particular form of undeserved punishment.