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I read the thread & I tried it. It seemed to help but.....I was hoping to find a campaign or recall to eliminate the cold start. I also have a GMC Yukon hybrid so I am aware of the "hybrid feel". I was just hoping that they had a more permanent fix instead of manipulating the car to make it run better.
 

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The cold jerk was improved with the TG5 Multi-ECU Update but it is not completely eliminated. It is the one weakness left in our Hybrid. It is result of a control strategy that was necessary for quick emissions compliance but not so good for drivability smoothness.

You can curse at EPA the first minute or so for your jerk:) After warmed up it is smooth.

Hybrid designs are complex and full of trade offs. Compared to competition it is this Hybrid design's weakness, but it has advantages in other areas such as no whiny CVT noise you have a regular 6AT transmission like a regular car. As everybody knows life is full of compromises!
 

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Clean air

The cold jerk was improved with the TG5 Multi-ECU Update but it is not completely eliminated. It is the one weakness left in our Hybrid. It is result of a control strategy that was necessary for quick emissions compliance but not so good for drivability smoothness.

You can curse at EPA the first minute or so for your jerk:) After warmed up it is smooth.

Hybrid designs are complex and full of trade offs. Compared to competition it is this Hybrid design's weakness, but it has advantages in other areas such as no whiny CVT noise you have a regular 6AT transmission like a regular car. As everybody knows life is full of compromises!
Since one benefit of a hybrid is less emissions, I'll trade a little cold jerk for clean air. Truthfully, I hardly notice it ( the brakes do seem to grab the first time in the cold).

Thanks CTD for the explanation...everything is better when you understand why:)
 

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The cold jerk was improved with the TG5 Multi-ECU Update but it is not completely eliminated. It is the one weakness left in our Hybrid. It is result of a control strategy that was necessary for quick emissions compliance but not so good for drivability smoothness.

You can curse at EPA the first minute or so for your jerk:) After warmed up it is smooth.

Hybrid designs are complex and full of trade offs. Compared to competition it is this Hybrid design's weakness, but it has advantages in other areas such as no whiny CVT noise you have a regular 6AT transmission like a regular car. As everybody knows life is full of compromises!

I have to agree with all of the above. Love the car compared to other hybrids. Dude, comment on the lifetime battery warranty and if the early adopters will get the same reassurance.
 

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I know this is an old thread but here is another example of how the charging system problem was still happening as of November of 2015, and she lost power on the freeway but was luckily able to get off the road. Can be a very dangerous situation in heavy traffic with trucks going by at 75 mph.
https://www.youtube.com/watch?v=Z6xk3gYE-NA
 

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I have a 2014 sonata hybrid and I have driven 85k miles. I got this same issue today. Took it the dealership but they can’️t figure out anything. Ran diagnostics And said that I have to get a new battery worth 380 before they can do anything more. They have already charged 150 to run the diagnostics. They don’t know what the problem is. Can u all suggest what should I do. I towed my car from there to another auto repair shop as I found the dealer to be uncooperative. This one is not hyundai dealer but was highly recommended in the area.
 

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Hi all,

I recently had this issue with my sonata hybrid limited 2013, I'm from El Salvador and here we haven't an official dealer for hybrid cars. I imported my car from EEUU last year.

Regarding the issue, I have the same "Check charging system" issue and my car doesn't work anymore, The lights, A/C, speakers, etc turn on when I press the start button, but the car doesn't run and never gets the "Ready" status. My mechanic has being working on it but he has little experience with hybrid cars.

Any advice for me? any possible way to fix it.

Thanks in advance!
 

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Hi all,

I recently had this issue with my sonata hybrid limited 2013, I'm from El Salvador and here we haven't an official dealer for hybrid cars. I imported my car from EEUU last year.

Regarding the issue, I have the same "Check charging system" issue and my car doesn't work anymore, The lights, A/C, speakers, etc turn on when I press the start button, but the car doesn't run and never gets the "Ready" status. My mechanic has being working on it but he has little experience with hybrid cars.

Any advice for me? any possible way to fix it.

Thanks in advance!
Without proper Hyundai equipment to scan the entire car' modules,, my best answer is just a wild guess... and your fella -->"but he has little experience with hybrid cars" could really make a mess of things,, or get himself hurt or killed playing with high voltage electricity

FIND a Hyundai dealer proficient with Hybrid

My wild estimated $950 (USA dollar) guess,, PRA Assembly with Service Connector open circuit
 
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Wow... still running the 2011? Ever planning on getting the new one? A relative bought a 2018, drives so much better than the 2011-2015s!
Hey Reg, how are you doing? How’s the Tesla? Right now there’s no plans to get another as my son mostly uses the hybrid but has been laid off since the Covid mess, and I had purchased a new Kona for my daughter to get back and forth to school and work, but she is away at college currently so we use the Kona mostly now for running around town and give the Odyssey a break. All 3 vehicles are running great for now so no need for a car payment with all the college bills coming in...
 
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After running in a bunch of circles, I ended up here.
I have a '12 Sonata Hybrid. The Theta II engine died (Google Hyundai's $7.54M lawsuit settlement), but they exclude my engine because it's installed in a hybrid. I pulled the gas engine and installed a used one (80K miles). It was a big job, but with lots of pictures, notes and bagged parts, I got it back together. Started up first time!! Driving along it showed the power flow diagram on the dash with the electricity flowing in and out of the traction battery. I thought I was home free.
Three days later it stated throwing the Hybrid System Error with the obnoxious chime. The first two times the car restarted after a 5 minute rest. The last time it would not restart. I took it to the dealer and they declared the gas engine seized. No way! It was running when I turned it off. Three Hyundai dealers in my area and they all tell me to go to another dealer because their shop doesn't have all the right tools and training - what's the deal Hyundai?
I towed the car back home and in the process of recharging the traction battery (remove 270V bus bar and recharge each 30V module individually with a LiPo smart charger). Then I'll be ready to start troubleshooting. Where do I start? OBD II reader won't read the hybrid codes (reads P0xxx codes, but not P1xxx). I'll recheck all my electrical connections, cleaning as needed. Try to find what is locked up that made the dealer think the engine was seized.
What else? Any ideas?
 

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Hi

I have also sonata hybrid limited 2014, it’s run 132315mi ,I imported my car from USA

Regarding the issue, I have the same "Check charging system" issue and my car doesn't move anymore
I don’t no what will do, any possible way to fix it.
Please help me
 

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After running in a bunch of circles, I ended up here.
I have a '12 Sonata Hybrid. The Theta II engine died (Google Hyundai's $7.54M lawsuit settlement), but they exclude my engine because it's installed in a hybrid. I pulled the gas engine and installed a used one (80K miles). It was a big job, but with lots of pictures, notes and bagged parts, I got it back together. Started up first time!! Driving along it showed the power flow diagram on the dash with the electricity flowing in and out of the traction battery. I thought I was home free.
Three days later it stated throwing the Hybrid System Error with the obnoxious chime. The first two times the car restarted after a 5 minute rest. The last time it would not restart. I took it to the dealer and they declared the gas engine seized. No way! It was running when I turned it off. Three Hyundai dealers in my area and they all tell me to go to another dealer because their shop doesn't have all the right tools and training - what's the deal Hyundai?
I towed the car back home and in the process of recharging the traction battery (remove 270V bus bar and recharge each 30V module individually with a LiPo smart charger). Then I'll be ready to start troubleshooting. Where do I start? OBD II reader won't read the hybrid codes (reads P0xxx codes, but not P1xxx). I'll recheck all my electrical connections, cleaning as needed. Try to find what is locked up that made the dealer think the engine was seized.
What else? Any ideas?
I doubt that this poster checks here often, but the original motor that seized would fall under the recent recall in '11-'13 & '16 Sonata hybrids. You may be due some big reimbursement money if you can prove your engine was replaced.
 
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