Some Hyundai Ioniq 5 house owners are complaining that the 12-volt batteries on their automobiles are draining for no obvious motive.

In case you verify the InsideEVs Discussion board, there are a number of submissions from Ioniq 5 house owners who skilled this downside, the earliest one from July 2022. 

Principally, these house owners state that their 12-volt battery – the one beneath the hood that powers all of the electronics, screens, home windows, door locks and so forth – will drain to a degree that the automotive will not function. 

Clearly, that is not nice and may depart house owners stranded as a result of they cannot even get entry contained in the automotive – or if they will, the automotive will not activate.

Happily, Hyundai appears to have discovered the causes for this downside and a few options. The information was broke by one Ioniq 5 proprietor on his YouTube channel, The Ioniq Man, who stated in a current video (embedded above) he was contacted by a Hyundai PR consultant with an replace from the engineering division. 

We had been in a position to confirm the PR assertion from his video with Hyundai for accuracy and study some extra, so listed here are the primary takeaways. The automaker says the 12-volt battery drain has been brought on by two totally different unrelated points.

Hyundai Ioniq frunk plastic lid and 12-volt battery

The primary one is “overactive unauthorized Bluelink use by third occasion apps that’s waking up the automotive too typically.” Principally, unauthorized third-party Bluelink apps are requesting data too often from the Ioniq 5. Every time that occurs it wakes up the automobile, inflicting important draw till it goes to sleep.

Whereas the drive battery has sufficient power to recharge the 12-volt battery a number of occasions, the battery saving mode can’t sustain with lots of of even 1000’s requests per day – The Ioniq Man says the PR rep informed him a number of the autos had been seeing as many as 5,000 Bluelink requests per day.

In keeping with Hyundai, the 12-volt battery drain concern has been resolved since January 31 by limiting Bluelink server site visitors to twenty transactions per day. As well as, sure problematic unauthorized apps had been blocked by the server, though their title was not disclosed. Clients had been additionally knowledgeable to alter their Bluelink password. 

Now, whereas most autos are solved since January 31, Hyundai says some got here again and required 12V battery alternative for failing to take cost after the battery was useless too many occasions or for too lengthy earlier than January 31.

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The second trigger that is not coated within the video however was communicated to InsideEVs is one thing Hyundai calls “EV Mild On with DTC P1A9096 ICCU associated.” To unravel this concern, the Built-in Charging Management Unit (ICCU) and ICCU fuse have to get replaced. 

Now, some autos that solely had the ICCU fuse changed additionally incurred Diagnostic Bother Code P1B77 (excessive voltage error within the battery pack) because of ICCU failure. DTC P1B77 instances required the Energy Relay Meeting (PRA) within the EV battery to get replaced as effectively. 

Hyundai additionally informed InsideEVs {that a} rumor going round on boards these days concerning the ICCU marketing campaign in Korea for coolant leak being probably associated and inflicting the above concern is fake.

“Truth: Not associated. The Korea concern pertained to an Inverter Coolant Low Warning mild on, not an EV Mild On concern. It solely utilized to autos earlier than 4/23/21 Manufacturing. Above points haven’t been particular to such mfg interval.”

In case you personal a Hyundai Ioniq 5 – or a Kia EV6 or Genesis GV60 that are primarily based on the identical E-GMP structure – and encountered 12V battery drain points please share your expertise within the feedback part.