VW Virtus ECU Memory Lock Blocks Error Code Reset

I had a similar issue with my 2018 VW Jetta TSI. The control unit was storing error codes that would not clear, which turned out to be related to an undervoltage condition in the computer system. The car electronics were affected by a failing voltage regulator in the charging system. While the car seemed to run normally, the constant undervoltage was preventing the control unit from properly clearing the stored codes through normal procedures. The auto repair required several steps: Testing the charging system voltage output, Checking ground connections at multiple points, Replacing the voltage regulator, Performing a full system reset using specialized diagnostic equipment, Clearing the memory lock condition This was a serious issue that needed immediate attention, as continued undervoltage can damage multiple electronic components over time. After the repair, the error codes cleared properly and have not returned in the past 14 months. The symptoms matched exactly what you describe, car running fine but persistent codes that would not clear. Recommend having your charging system thoroughly tested, focusing on voltage regulation under various operating conditions.

Thanks for sharing your experience. I am relieved to hear the solution worked out in your case. The ECU diagnostics showed similar symptoms on my Virtus, codes that just would not clear despite the car running well. Been dealing with this computer system issue for a few weeks now. The memory lock problem is quite frustrating during routine auto repair checks. Would you mind sharing what the total repair cost was for fixing the voltage regulator and car electronics? Also curious if you have noticed any other electrical quirks since the repair was completed?

Glad to provide an update on my case. Since seeing the mechanic last month who diagnosed and fixed the fault memory lock issues on my Jetta, everything has been working perfectly. The automotive diagnostics confirmed it was indeed an undervoltage problem affecting the control unit. The total repair came to 240€, which covered the voltage regulator replacement and the complete system reset. While it wasn't a cheap fix, it was worth every cent since the car electronics are now functioning normally. I have not experienced any electrical issues since the repair. The fault codes clear properly now during routine maintenance, and the control unit operates as intended. Looking back, getting it fixed promptly was definitely the right call to prevent potential damage to other electronic components. If your symptoms match what I experienced, I would strongly recommend having your charging system checked soon. Leaving undervoltage issues unaddressed can lead to more expensive repairs down the line.

I took my Virtus to my regular mechanic last week after reading about the voltage regulator solution. The auto repair diagnosis confirmed a similar undervoltage issue affecting the active memory in the control unit. The repair involved replacing the voltage regulator and performing a complete computer system reset. Total cost was 280€, a bit more than expected but still reasonable considering the complexity of modern car electronics. After the fix, all fault codes finally cleared properly. The memory lock issue has not returned, and the charging system is now maintaining correct voltage levels. Looking back, the symptoms were classic signs of voltage regulation problems, but it took an experienced mechanic to properly diagnose and fix it. Really appreciate the helpful guidance from everyone here. Will update if any new issues arise, but so far the car is running perfectly after the repair.