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Coolant Warning

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#584 ·
SleeperPService said:
Had a phone call with the dealers service department yesterday that they will forgo the 4yr service coolant change and not charge me for it due to the recent recall.
Very happy with that.
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That's great news actually. I'm about to deal with the same situation, I'll hit 60k kms mark within the month and hope for the same result - my campaign flush / refill was done in February this year.

As my coolant level is again slightly below MIN - although "refill coolant" hasn't been triggered since the service campaign - I googled a bit for a BSC-2 coolant, which is apparently hard to find and buy. Surprisingly, it's available to buy online at local H. dealer so I ordered 2 litre bottle for some 25 Euros.

I found also some aftermarket option (I think it's a Spanish company), but their product unfortunately conforms to earlier and problematic BSC-1 coolant, which can be also found around on ebay and similar marketplaces.
 
#585 ·
My coolant warning came on this morning after parking the car on the hill outside our house, it's usually in a flat garage, looking at the level it's just below min. I'm now booked in on the 12th September to have the campaign done (I did ask to have it carried out at my 3 year service but they didn't do it, so rather annoying I have to bring it back in). After a quick drive and a turn off and on again the fault cleared on the dash. Handily I'm off on holiday for a couple of weeks on Sunday so waiting a month to get the procedure done isn't as painful as it could have been.
 
#587 ·
So has this fluid become alot cheaper recently? I seem to remember earlier in the thread that this was very expensive coolant which was making a coolant change very expensive at the dealership.
 
#588 ·
Probably yes. Back in 2019, there were only facelifted Ioniqs, Konas, e-Niros, so the volumes of the liquid used were low I suppose.

Today, when all EVs have liquid-cooled batteries and there are more models from Hyundai/Kia, the demand is much higher I would say.
 
#589 ·
The fluid may be cheap-ish, but it take a very skilful & highly trained tecchie to operate the system to replace it without introducing air-bubbles/locks etc!
 
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#590 · (Edited)
alsiik said:
... Today, when all EVs have liquid-cooled batteries and there are more models from Hyundai/Kia, the demand is much higher I would say.
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Noting that the blue coolant has been phased out on newer H/K EVs and I'm not aware of any other EVs that use it. Both the current 2nd-gen Niro and upcoming new Kona EVs use conventional pink coolant with normal maintenance intervals, made possible by an evolved battery pack design. I'm nearly certain Kia dropped the blue back when the EV6 was introduced while the Ioniq 5 separated the cooling system into two separate volumes using both pink and blue.
Tesla never bothered because, well, it's Tesla, and it appears that they will be moving to a pack with a similar cooling design upcoming.
 
#592 ·
shniest said:
Ok my service is completed. I will post the details below (Here in BC, Canada) and let you all know if the problem ends up ever coming back.

Parts Replaced:
375W5-G7500 -EWP Assembly (Water Pump Assembly-Electric)
36910-0E500 - EWP Assembly (Water Pump)
UM022-CH270 - Ev Coolant BSC2
UM022-CH270 - Ev Coolant BSC2

Service Details:
EWP Replacement and coolant system flush. Tested.
Confirmed Issue. Coolant refill msg on cluster, No DTC.
Removed connections and found gel like coolant substance, from both EWP on motor bay.
Received new 2 EWP replacement, and coolant system flush, completed.
Refill/Circulation done on GDS. Tested. OK Now.

Hope this helps anyone else....
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My campaign 20D140 service was done yesterday. Since the previous service above only lasted a few days before the message returned. We will see if it returns again after this.
I did notice that on the previous service in June they used UM022-CH270 Coolant.... and this service yesterday in the campaign they used 00232-19113 coolant for what its worth and used the new flushing machine.
 
#595 ·
No change of range when mine ws done back in February. But my range has gone up since, due to warmer weather.
The true capacity of a Li-ion battery is dependent on the battery temperature. e.g dropping the temp from 20C to 0C can reduce capacity in the order of 5%. But the GOM will still report 100% in both cases!
 
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#596 ·
Thanks. I am aware that temperature affects Range. This is our 3rd Ioniq, we had a 2017 & 2019 with 28kw battery pack vs the 2020 with 38kw battery pack. Our 2020 has 35k mikes on it now. It has charged as high as 190ish over the years in the heat of summer. But since the refill coolant issue which started least year, and the change out to the newer coolant the range has gone up another 10% which probably means things are getting even hotter and the battery charger to new highs. I am guessing the 38kw battery’s life will be shortened by this. And reducing the charge to 90 percent won’t change the fact that things are running hotter. BTW our car is back in service for the 3rd/4th time for the refill coolant light. (4th because they thought it was fixed during 3rd and when I went to pick up the car the light was on when they brought it up to us, so we left it with them to continue to troubleshoot. I also have a 2022 Kia Niro EV which I also am aware of its max range summer vs winter.
 
#598 ·
They certainly altered the balancing strategy a bit. From 90% to 100% I used to see a steady but continuous decline in charging current between these 2 levels, with no break anywhere. Now, the charging gets to 90%, then stops for a couple of minutes, presumably a bit of cell balancing happening, then it jumps back to 7kW I think (or whatever it was at), then does the same previous gradual current reduction as it approaches 100%. So maybe they've actually improved the algorithm and managed to squeeze a bit more into the cells?

Degradation on these cars seems to be amazingly low, so I'm not worried if the battery runs a bit warmer. They should be able to cope with much hotter climates than ours, UK is very kind to EVs!
 
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#600 · (Edited)
HandyAndy said:
Degradation on these cars seems to be amazingly low, so I'm not worried if the battery runs a bit warmer.
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The 38kWh battery has a nominal voltage of around 319 V, compared to 360 V of the 28kWh battery. Lower pack voltage means slower charging, that’s why the 28 can charge faster than the 38.

To date the 28kWh Ioniq batteries seem to be bullet proof, the lower voltage and slower charging of the 38kWh Ioniq batteries to me suggests similar if not better longevity, well hopefully 🤞
 
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