Hyundai Ioniq EV 38kWh cooling system
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- เผยแพร่เมื่อ 24 มี.ค. 2023
- In this video, I have a quick look at the cooling system on a Hyundai Ioniq 38kWh electric car. These models have water battery cooling too, whereas the previous 28kWh model had a forced air cooled battery pack. Many owners of the 38kWh Ioniq are experiencing a "low coolant" message on the dash, when the coolant bottle isn't actually low. I read initially that Hyundai dealers were replacing the coolant sensor, which then wasn't resolving the problem. The current solution is to drain, flush and refill the cooling system completely and there is now a "recall" in place to do this on all cars as they come into the dealerships for other work. I had read that a different coolant was being used. If anyone could shed any light on this, please do let me know in the comments.
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Interesting, thanks Matt. Your video had me going outside to lift the lid on my 2019 Kia e-Niro (64 kWh). The coolant bottle has a dark green liquid inside which as far as I can see following the pipework feeds into the motor in one direction and down in the other direction which I guess goes to the battery. I live in France and the last service was 75,000 km but as far as I can see from my invoices since having the car from new there has been no battery coolant change as yet.
Ah that's great to see how it works, cheers Matt. Ours gets the replace coolant message intermittently, often after charging but not always. The old switch it off, pause, switch it on again seems to work. Judging by the competence ratings of some Hyundai dealers I'm loath to go to one unless there's a formal recall.
I didn't buy from a dealer so not sure if I'm likely to receive a recall notice?
Think I'd look out a HEVRA registered garage locally and chat with them about it.
No obvious problems with the 12v btw and we use the Bluelink quite a lot. I'll be interested to see your video on the 12v battery monitor but everything seems good at the moment.
Especially bearing in mind it travelled to us by flat bed truck for three hours. When we opened the door before he drove it off the radio was playing! Reckon it must have been in drive mode still because it was down to something like 76% from a hundred. Didn't know enough about it at the time to be able to tell and the driver was keeping stum!
Many thanks for this. Just bought a 38kw 2021 car and they did the recall as part.of the car preparation. The internal invoice seemd to be materials and a small amount of labour!
Said goodbye to my 22kw Zoe bought from you as a trade in for the newer car. Many thanks for the videos
Hi Dave. The Ioniq a huge improvement over the 22kWh Zoe and a very impressive car, so I'd guess you're very happy with it.
There is an official TSB for this issue.
The work carried out on my car recently was as follows:
Coolant light issue reported
Confirmed customer complaint
Checked speed of WEP1 and EWP2
Found EWP2 to have exceed max limit (I guess this is what triggers the refill coolant message)
Will require coolant flush procedure as per TSB HCE22-55-P070 AE EV
Completed coolant flush procedure as per TSB
Refilled coolant and bled
Road tested all ok
Checked DTCs
All Ok
The coolant is blue and filled to the max level.
Service Manager took me into the workshop to show me the 'special machine' from Hyundai and the EV technician showed me a picture of the filter in this machine after he had flushed out my car and it had blue crystal deposits on it.
I have assumed that the coolant has now been replaced with a different one although difficult to tell.
Thanks for the info. That's a great help. I'd love to see this TSB HCE22-55-P070 AE EV. Did the 'special machine' look like it connected to an airline to blow the coolant out or maybe something to suck the coolant out???
Its good to know this issue is due to the coolant crystallising. Obviously, all of this is only a fix if they're replacing the coolant with a different specification.
Good to see you cover this. I had a 38. Got the refill coolant message of doom. Had it ‘fixed’ several times. Read on the forums it only gets worse over time. Can range from weeks after a ‘fix’ to months before it comes up again. Coolant level wasn’t low. I sold my 38, won’t be going back to Hyundai. I heard there other ev’s have problems, like 12 volt battery issues.
I'm 100% convinced the 12V battery issues are due to the Bluelink app/telematics. We've not enabled the Bluelink in our 38kWh and am monitoring the battery drain and its non existent. Video coming on that too soon.
@@GoGreenAutos that's the same for a few manufacturers, the modems staying awake and causing 12v battery drain. Ford had same issues but software updates seems to fix most. My ioniq 38 doesn't seem to drain the battery not that I've checked the current draw when asleep. Left the car for a week at airport and was fine. Bluelink is switched on.
Had the coolant warning on my 38kWh, Hyundai flushed the system about 6 weeks ago, and so far so good.
Good to hear, but unless the coolant is a different spec, I fear the problem will come back.
I got the coolant message after a HV battery change on my 38 kWh (It was charging extremely slow and never to more than around 150 km on the GOM + according to the display, it stopped at around 75%. Turning the car off and on again resulted in that number changing too 100% charged, but km range didn't change).
The car was topped up, and I got the message again a month or so after. I then brought it in and got a loaner car.
The next day I picked my car up and I've been driving for about a year now, without any issues :-D
Quite enjoyed your journey trying to get 100% coolant change my thought on it is maybe attach a clear piece of tubing onto the return to the reservoir feed that into a large container blank off the coolant reservoir return aperture then run the pump from the system as you have done filling the reservoir constantly to avoid air locking and observe when the coolant return changes to the new coolant colour.
What do you think Matt?
Then if the software allows do the same while applying charge to see if that last part of the circuit can be flushed through could be a bit wasteful on coolant but would save draining the rad and removing undertray would be interested to see if it could work that way and save getting into an expensive 2 year cycle to oartly change coolant.
Would be better if Hyundai used a fluid that lasts lifetime of car.
I got the low coolant message on my Kia Soul EV 64kWh when it was about 4 hours old. Coolant was fine and I’ve not seen that warning since.
TSB - 20D140. Uses BSC-2 (PN 07100-J2A21 which is also blue) now due to crystalisation of BSC-1
My Kia Niro 4+ 2020 model year has a recall from Kia for the same issue. Having a service (30,000 miles) next month and the coolant flush done then, been told service and coolant flush is a day job glad it's a freebie.
Is that a heat pump under the cover to the left, looking from the front, in your car as some of the plumbing seems to head that way ?
The heat pump in my car helps a lot in winter with the economy on long journeys as it's a 60 mile round trip to work and back and only use about 20% 'ish of the battery a day in cold weather.
Just bought a 38kWh version last thursday and the message "top up coolant" pop-up on the screen right after first charge. The car is going back in to service on tuesday after Easter.
Thanks for the info 👍
Why that coolant need to replace? My -18 next 120 tkm service will be that replace among everything else and I assume that will be expensive service... I have worked a long time with vags and there is no any coolant replace intervals and there is no any issues concerning old coolant.
I am considering to make that 120 tkm service myself...
My Ioniq 38 kWh is on it's third year now. So far no problem with coolant. Maybe I'm just lucky.
Same here
Exactly the same with mine 20k miles and three years no issues yet
Our 38 was shocking for 12v battery drain and error messages, especially coolant and TPMS.
Hyundai dealer couldn’t get to the bottom of it despite having it back many times.
In the end we gave it back to them and bought the petrol turbo and it’s the best decision we ever made.
I laugh at the people who say EVs are simple, uncomplicated, nothing to service and nothing to go wrong 😂
Well all modern vehicles are complicated, but for sure EVs do have far less components and far less mechanical parts that can wear. So overall, it does make them more reliable with less maintenance required. But the owner experience (of any modern vehicle) is often let down by lack of knowledge and diagnostic skills at the main dealership workshops.
Hi , thank for this video
Can I ask what you have between + and - battery,thank you
That's a bluetooth battery monitoring device. A video about this is filmed and stacked on up on the channel to release in a few weeks. Only £21 on Amazon amzn.to/3n2Uv81.
@@GoGreenAutos we installed these Bluetooth 12v battery monitors, interestingly a 2021 KONA tops up the 12v battery every 4 hours but an e-Niro once every 24 hours
ما هو ماء الانتي فريز تبريد الرديتر الخاص بسيارة كونا كهرباء 2019
ارجوك سيد مات ان تشرح عنه وتذكر اسمه وما الفرق بين الماء ذو اللون الازرق والماء ذو اللون الزهري
I understand there is a similar Coolant change 'dealer action' for Hyundai KONAS
Yes, if the coolant is crystallising in the Ioniq 38kWh, many other Kia & Hyundai models will be effected as I'm sure they all use the same stuff.
I thought the dealers were using a bit of kit to blow the coolant out and the coolant there putting in is a different spec now? Also using 6 litres out of 8 litres of coolant to flush . Only what I heard recently but not seen the bulletin. How old is the bulletin you have seen as appears instructions may have changed.
If the "special tool" they get in for this is for blowing the coolant out, that's good news as that is the only way of properly flushing the system. The TSB I've got is for the 28kWh model and is the current one. I've not yet seen the new 38kWh TSB as my subscription with Hyundai has expired and I'm not renewing it until I actually need it.
@@GoGreenAutos that's what I'm told, the coolant is same colour but is bsc-2 . All dealers have been issued with the kit to flush properly. Quite a lengthy process apparently.
@@iantaylor1172 I'm looking forward to seeing the TSB on this. My subscription with Hyundai has expired, so not accessing their repair portal currently until I can justify the cost.
Hi this message has also come up on my Hyundai Ioniq 38kwh aswell, what is the actual solution and fix to this problem as ive checked under the hood & my coolant looks fine and close to max sign.
What do you have installed there on the starter battery?
That's a bluetooth battery monitoring device. A video about this is filmed and stacked on up on the channel to release in a few weeks. Only £21 on Amazon amzn.to/3n2Uv81.
Thanks Matt, looking at a 38Kwh Ioniq, it had a coolant message on a test drive.... 🤔 Do the 38's have a heat pump....?
Yes all UK Ioniqs (28/38kWh) have heat pumps.
@@GoGreenAutos Thanks Matt, with the coolant issue is it best to avoid the 38Kwh and look at something else instead....?
@@davask2269 The Ioniq is still one of the best, if not the best, EV out there. The coolant issue is a pain, but its something that is getting sorted under warranty.
Looking to buy one second hand, would the recall cover me if I purchased second hand from a private seller? This issue is putting me off tbh.@@GoGreenAutos
Keen on your thoughts, I recently had a dead 12v and AA jumped it but blew the “fuse module” - Hyundai replaced it but since I got it back it seems like the thermal management has changed, I get a loud fan noise almost all the time now coming from that top power control unit, I can feel the air blowing out the side of it so assume it’s a fan but it is really loud and on most of the time…..take it back as that’s not normal? Prior to this I’d never heard that fan sound over the 4 years of ownership
First off, jump packs shouldn't be used on EVs. Well they can be used, but not in the same way as you would on a ICE vehicle. If they are used in 12V only mode, they're fine. But using it in the normal "boost" mode can cause problems on an EV. The "boost" mode is assuming a high load starter motor is needing the current, whereas in an EV the 12V battery is just flicking over some relays. So using a jump pack wrong can throw all sorts of errors in many ECUs and cause problems. I'm not sure what is meant by the "fuse module". That could be anything. I'm not surprised a fuse blew using a jump pack. The AA should know better, but most don't unfortunately.
I can't see how the thermal management would have changed though. Have you had the coolant recall done yet on your car? If not, then you could be experiencing the coolant solidifying in the battery pack, which in turn, if the battery is getting hot, it will be activating the radiator fan. There's videos on this channel about this recall and more to come.
As for fans, there's only one - the radiator fan. If the car is trying to cool, you'll hear the radiator fan going (and feel the air from all angles) and hear the air conditioning compressor going. They can both make a racket if the bonnet is open.
@@GoGreenAutos thank for the response, I’ll have another proper look in the weekend and see what more I can see based off that and your other video - it’s a lease vehicle so I’m not party to the work sheets for what’s been done each service etc. but I think I’ll ask them for more info and show them the constant racket coming from the area now,
I’ll check out your other video now too 👍
You were right, it’s the radiator fan on full bore all the time, never switching off……never heard it prior to the recent repair.
@@andywrenn3753 so have you had the coolant recall job done? If not, then it could be your battery circulation is blocked and battery getting too hot??
Hi there mines has the radiator fan running constantly did you ever get to the bottom of it
Thanks
As it’s a common system I wonder if they can use the stack heat to warm a cold battery in a similar way to a Tesla.
Need to add 5 kw diesel webasto to the battery inlet hose🤭
No, its not that sophisticated. Its just coolant being pumped around, then through a radiator by the water pump comes on and varies speed on the temperature. Tesla do something far better, but have invented the octivalve to make the water diversions work. Others may eventually copy.
The dealer service for 4 years on my Kona is over £500. I understand it's due to the cost of the low conductivity coolant used in the coolant change. I read of someone in the US that did it himself yet still paid $700 for the coolant. Older konas have 10 year coolant change whilst newer are 4 years. Is this Hyundai throwing the dealers a bone or does it really just cost that much?
The "special" coolant costs about £18 per 2 litres, from Hyundai.
@@GoGreenAutos Thanks, Hyundai through their service plan shows the service at 500 and something though this includes the brake fluid which in its service is 160. I'd estimate with labour there'd be about 200 in parts. I'm wondering if they may also change the water pumps as you might in a cam belt service on an ICE vehicle. That would be reasonable enough. We have the second service coming up in July so I'll ask them, what the heck 500 quid?
@@stulop Water pumps do not get changed. They're electric and aren't running all the time like they would be in an ICE vehicle.
@@GoGreenAutos Thanks for your input on that. I've been digging deeper and it looks like it includes a 12v battery replacement.
Hopefully Hyundai aren't recommending their techs put tap water into their coolant tanks? Surely at least distilled water but should be deionised water really!
If only there were more 100kw chargers around the UK, the 28kwh Ioniq would look better and better!
I mentioned in a Bjorn Nyland 1000km test of the 28kwh Ioniq, to maybe direct the rear fans down onto the opening under the rear seat to aid in battery cooling!
I know you don't have your 28kwh anymore but would it be possible to test this theory at all?
For flushing, they are. Well the Hyundai TSB says "flush with water and repeat".
So was Bjorn suggesting a modification? If so, not needed as the cooling on the 28kWh works just fine anyway.
😵😵😵😵😵 cooling system in ev