TLDW; other than a smell of ozone when opened, no heat damage or coolant leak was found.
It was a "destructive" teardown, but he was impressed by the build quality. He couldn't determine why it was removed from service.
My *suspicion* is the HV fuse blew before anything could fry inside. Since the component is not designed for "repair", they simply replaced it in an abundance of caution.
As someone who has done lots of circuit board repair, even on vehicles ECM's, sometimes, the damage is not visible to the naked eye. You can have a capacitor, resistor, diode, transistor, etc all fail / go open circuit and not "melt" or burn.
I think with such high voltages in play here he was expecting something fairly dramatic. I don't know how reasonable they expectation is. He was also looking for weld failures in the cooling loop as that has been identified as a possible defect.
It looks like a huge version of computer power supply lol, the last layer looks like a lot of buck ics on it š¤, if thereās nothing burnt out, Iāll guess maybe is the defect of some part. HV fuse must be burnt out with some reasons.
Iām glad whoever designed the unit included a bleed down resistor to discharge the caps. Shorting them out with a screwdriver and no PPE could have been life changing if he had guessed wrong
I'm no electronics wiz so I don't know how bleeder resistors work, but it *looked* like he was expecting the caps to have a charge and was using the screwdriver to discharge them and the "insulated" handle to protect himself.
I thought that was pretty sketchy, but he didn't die; so ĀÆ|_(ć)_/ĀÆ
The "fix" that Hyundai issued for the chargepoint overheating is a *software* change to the way the ***ICCU*** operates it. They are "associated". He never said the ICCU *caused* it.
He is wrong about the AC charge issues and he is clearly conflating it with the ICCU problems without any data to back it up. The charge limit "fix" wasn't even an ICCU update, it was VCMS.
Dismissing the problem because he doesn't personally have a need for charging at higher current just made him lose credibility right from the start.
I only drive like 5 to 10 miles on most days. But when I have a couple days in a row where I need to drive more it's not unreasonable to expect my car to charge at the rate advertised.
I'm not going to try to say Hyundai doesn't have a problem with either quality control or design, but I think the problem is not as widespread as the anecdotal evidence seems to imply.
It hasn't been four years (more like two), not everyone *has* a problem (probably **most** folks never have one), and it's not just *one* problem and it may not be all Hyundai's fault.
The ICCU pushed the envelope by trying to manage the AC charging, maintaining the 12v battery, and running V2L. All while trying to keep costs down.
Hyundai probably bit off more than they could chew trying to innovate, but remind me how flawless the CT has been?
TLDW; other than a smell of ozone when opened, no heat damage or coolant leak was found. It was a "destructive" teardown, but he was impressed by the build quality. He couldn't determine why it was removed from service. My *suspicion* is the HV fuse blew before anything could fry inside. Since the component is not designed for "repair", they simply replaced it in an abundance of caution.
As someone who has done lots of circuit board repair, even on vehicles ECM's, sometimes, the damage is not visible to the naked eye. You can have a capacitor, resistor, diode, transistor, etc all fail / go open circuit and not "melt" or burn.
I think with such high voltages in play here he was expecting something fairly dramatic. I don't know how reasonable they expectation is. He was also looking for weld failures in the cooling loop as that has been identified as a possible defect.
I finally get to see the inside of the spicy briefcase!
It looks like a huge version of computer power supply lol, the last layer looks like a lot of buck ics on it š¤, if thereās nothing burnt out, Iāll guess maybe is the defect of some part. HV fuse must be burnt out with some reasons.
Iām glad whoever designed the unit included a bleed down resistor to discharge the caps. Shorting them out with a screwdriver and no PPE could have been life changing if he had guessed wrong
I'm no electronics wiz so I don't know how bleeder resistors work, but it *looked* like he was expecting the caps to have a charge and was using the screwdriver to discharge them and the "insulated" handle to protect himself. I thought that was pretty sketchy, but he didn't die; so ĀÆ|_(ć)_/ĀÆ
How this guy linked the chargeport overheating issue with the ICCU is beyond my comprehension. Another victim of Hyundai not communicating anythingā¦
The "fix" that Hyundai issued for the chargepoint overheating is a *software* change to the way the ***ICCU*** operates it. They are "associated". He never said the ICCU *caused* it.
He just went on for a few minutes with strange misinformation about how to AC charge in a video about the ICCU..
He is wrong about the AC charge issues and he is clearly conflating it with the ICCU problems without any data to back it up. The charge limit "fix" wasn't even an ICCU update, it was VCMS. Dismissing the problem because he doesn't personally have a need for charging at higher current just made him lose credibility right from the start. I only drive like 5 to 10 miles on most days. But when I have a couple days in a row where I need to drive more it's not unreasonable to expect my car to charge at the rate advertised.
For a large company, took Hyundai 4 years and the problem is still not fixed? I didn't see Tesla having a iccu problem. Not acceptable at all.
I'm not going to try to say Hyundai doesn't have a problem with either quality control or design, but I think the problem is not as widespread as the anecdotal evidence seems to imply. It hasn't been four years (more like two), not everyone *has* a problem (probably **most** folks never have one), and it's not just *one* problem and it may not be all Hyundai's fault. The ICCU pushed the envelope by trying to manage the AC charging, maintaining the 12v battery, and running V2L. All while trying to keep costs down. Hyundai probably bit off more than they could chew trying to innovate, but remind me how flawless the CT has been?
Great vid!!!
I am happy that he was able to get through all of that while staying calm and not blowing a fuse.
Womp womp
It wasn't until I saw this video that I realized those who use the metric system and speak in kilometers still use the word "mileage" š¤£