Hi everyone.
I am desperate with the Hyundai technical service and I am here to share with you the technical problem to see if it has happened to any of you.
I have an IONIQ 38kWh Klass (lowest trim level in Spain) from October 2020. Since November 2021 I started to notice that the auxiliary battery charge light was coming on frequently. I started to monitor the data and found something like the following.
![Image]()
That's too many charges for a battery that is used every day for 60 km on the motorway. After a while, I also noticed that the option to turn the Auxiliary Battery Saver option on or off was not working and was greyed out as you can see in the video.
In order to avoid commenting on the OBD adapter, I recorded a video where you can see exactly the behaviour of the graph above, a pity that the battery of my action cam is so small.
Coinciding with the 30,000 km maintenance, I reported the problem to them so that they could try to solve it because, although it is not a problem that prevents me from using the car, I have a car under warranty and I want it to be in perfect working order. From here on the nonsense of the Hyundai mechanics and service staff starts.
First the workshop manager calls me and tells me that "the heated window is on". Apart from the fact that it doesn't matter, because when I turn off the car, everything should turn off, I tell him that it can't be, because I hardly use it. He was referring to the "Heat" button to activate the heating. Previously, when I told him that it wasn't the window, he said: "yes, the defogging...". Remember, the workshop manager.
After a week and a half, they changed the battery and told me that they had never had the auxiliary battery recuperator light come on.
I took the car and the next morning there it was again, the little light was on. I take the data again and this is the result. Less frequently but still the same problem for a car that is used on a daily basis.
![Image]()
The car has been in the garage for two more weeks, remember, a car under warranty for less than two years, and the mechanics are so good that they have ordered a new instrument panel (which must cost a lot of money) and the problem is still the same.
It is clear that they do not have the necessary skills to analyse a problem, because they insist on treating them as independent problems when the relationship seems obvious: Switching on the auxiliary battery saver and the option to activate/deactivate that functionality disabled.
I wanted to know if anyone has had a similar problem and if so, how it was solved, because really, I'm getting desperate.
Greetings to all.
I am desperate with the Hyundai technical service and I am here to share with you the technical problem to see if it has happened to any of you.
I have an IONIQ 38kWh Klass (lowest trim level in Spain) from October 2020. Since November 2021 I started to notice that the auxiliary battery charge light was coming on frequently. I started to monitor the data and found something like the following.
That's too many charges for a battery that is used every day for 60 km on the motorway. After a while, I also noticed that the option to turn the Auxiliary Battery Saver option on or off was not working and was greyed out as you can see in the video.
In order to avoid commenting on the OBD adapter, I recorded a video where you can see exactly the behaviour of the graph above, a pity that the battery of my action cam is so small.
Coinciding with the 30,000 km maintenance, I reported the problem to them so that they could try to solve it because, although it is not a problem that prevents me from using the car, I have a car under warranty and I want it to be in perfect working order. From here on the nonsense of the Hyundai mechanics and service staff starts.
First the workshop manager calls me and tells me that "the heated window is on". Apart from the fact that it doesn't matter, because when I turn off the car, everything should turn off, I tell him that it can't be, because I hardly use it. He was referring to the "Heat" button to activate the heating. Previously, when I told him that it wasn't the window, he said: "yes, the defogging...". Remember, the workshop manager.
After a week and a half, they changed the battery and told me that they had never had the auxiliary battery recuperator light come on.
I took the car and the next morning there it was again, the little light was on. I take the data again and this is the result. Less frequently but still the same problem for a car that is used on a daily basis.
The car has been in the garage for two more weeks, remember, a car under warranty for less than two years, and the mechanics are so good that they have ordered a new instrument panel (which must cost a lot of money) and the problem is still the same.
It is clear that they do not have the necessary skills to analyse a problem, because they insist on treating them as independent problems when the relationship seems obvious: Switching on the auxiliary battery saver and the option to activate/deactivate that functionality disabled.
I wanted to know if anyone has had a similar problem and if so, how it was solved, because really, I'm getting desperate.
Greetings to all.
