Skoda Citigo Battery Issue

A heavily discharged battery in a relatively new car like your Citigo is definitely concerning. First, I'd suggest thoroughly inspecting the battery terminals for any corrosion or loose connections. Clean them with a wire brush and ensure they're properly tightened. Next, have you tried battery charging? A smart charger might be able to revive the battery. However, given the error message and flickering lights, the defective battery sensor you suspect is highly probable. What error codes are stored in the error memory?

Thanks for the quick response! I've checked the battery terminals; they seem clean and tight. I haven't tried battery charging yet, mostly because of the error message. Regarding the error codes, I don't have the exact codes at hand, but the mechanic mentioned something about a communication error with the battery monitoring system. Does that confirm your suspicion about the defective battery sensor, or could it be something else within the electrical system?

That communication error strongly suggests a problem with the battery sensor or its wiring. While it's possible there's a broader electrical system issue, the symptoms point directly to the sensor failing to properly monitor and regulate the battery's charging state. Given the potential cost and complexity, I recommend a professional diagnosis at the workshop. They can confirm the sensor failure and rule out any related issues. Don't keep driving the car as is, since a discharged battery can cause additional problems.

The workshop confirmed it was the battery sensor. The discharged battery was a direct result of the faulty sensor. Total cost came to 315€, as predicted. Thanks for your help!