VW Virtus Central Locking System Complete Failure

Had the exact same problem with my 2017 VW Polo last winter. The door locks stopped working completely, both with keyless entry and manual key. Really frustrating when the locking mechanism fails like that, especially since the car alarm system was also affected. Took it to the workshop after trying basic troubleshooting like checking fuses and battery voltage. They diagnosed it as a faulty wiring connection to the central locking control module. Some cables had worked loose over time, causing intermittent connection issues. Total repair including diagnostics came to 95€. What I learned: These issues often stem from wiring problems rather than the actual door locks or control module being broken. The repair was actually simpler than expected once they pinpointed the loose connection. To help diagnose your specific case, could you share: Does this happen with all doors or just specific ones? Are you getting any warning lights on the dashboard? Can you hear the central locking motor trying to work when pressing the key fob? Which error code is stored in your system? This information would help determine if your issue is similar to what I experienced or potentially something different.

Latest service was at 42000km. Thanks for sharing your experience. It happens with all doors simultaneously. No warning lights on the dash, but the central locking system is completely unresponsive. The error code stored is P1622. Cannot hear any motor sounds when using the fob. I followed your suggestion and double-checked all fuses in the main fuse box related to the security system. Also tested the key fob battery, its new. Seems the locking mechanism problems started right after a heavy rainstorm, if that helps identify potential causes. Did your mechanic mention if water damage to the control module could cause similar symptoms? And was the 95€ repair cost just for labor, or did it include parts too?

Thanks for those details. Your symptoms sound very similar to what I experienced, but the rain connection makes me think water might have gotten into the wiring harness or control module. In my case, the 95€ was just for labor since they only needed to repair and reseat the connections. After you mentioned the rainstorm, I recalled my mechanic pointing out that these central locking systems are pretty sensitive to moisture. The control module is usually mounted in an area that can collect water if the drainage channels get blocked. When water seeps in, it can corrode the connections or short out the module. The P1622 code combined with complete silence from the door locks (no motor sound) suggests either a power supply issue or a damaged control module, just like my initial symptoms. However, mine was only loose wiring, while yours might need module replacement if water damage is confirmed. For reference, when they fixed my Polo, they also applied a protective coating to prevent future moisture issues. If your problem is water-related, you might want to ask about similar preventive measures. The keyless entry and security system worked flawlessly after the repair. Have you noticed any other electrical issues since the rainstorm? This could help confirm if water intrusion is the culprit.

Thanks for your input. The issue definitely seems more serious than just loose wiring. You make a good point about checking for other electrical problems, actually noticed the power windows are a bit sluggish now too. That combined with the timing of the rainstorm really points to water damage. Just called the workshop and described the symptoms. They mentioned the control module replacement for these central locking systems typically runs 350-450€ including parts and labor. Plus extra if they need to reprogram the keyless entry system. Bit more expensive than your repair, but makes sense if the module is fried. Booked it in for next week. Will make sure to ask about that protective coating you mentioned, sounds like a smart addition to prevent future water damage to the door locks. Really hoping it's just the module and not more extensive damage to the wiring harness. Thanks again for sharing your experience. It helped rule out simpler fixes and better understand what I might be dealing with. Will update once I get the final diagnosis from the shop.