Genesis Fault Memory Lock

I've encountered something similar on my Genesis. It sounds like your car's computer system, specifically a control unit, has registered an error and locked the fault memory. This often happens due to undervoltage – a temporary drop in the car's electrical system. Have you checked your battery recently? Was the car sitting unused for a while?

Interesting. I haven't checked the battery specifically. But I did notice the car struggled a bit to start after sitting for about 5 days. So, if it's undervoltage, what's the next step? Is it something I can fix myself, or am I looking at ECU diagnostics at a shop?

Given the "Fault memory lock active" message, and the struggling start after sitting, undervoltage is a strong possibility. Unfortunately, clearing a locked fault memory usually requires specialized tools and knowledge. The fault memory lock is designed to prevent unauthorized access. While replacing the battery might help prevent recurrence, you likely need a workshop to clear the existing error. It will probably set you back around 240€.

Thanks so much for the info! I'll take it to a workshop to get the ECU diagnostics done. Turns out it was a undervoltage issue as you predicted, cost me 240€ to get the computer reset.