Skoda Praktik Diesel Electrical Fault

Your description certainly suggests a potential overvoltage issue. I experienced something similar with my Skoda Octavia. Multiple system failures, warning lights illuminating for no apparent reason, and difficulty starting the engine are classic symptoms. Have you checked the voltage regulator? A failing regulator can indeed cause a power surge, leading to damage to the car electronics. What voltage readings are you getting from the battery when the engine is running?

Thanks for the quick reply! I haven't checked the voltage regulator specifically. How would I go about testing that? And what voltage readings should I be looking for on the car battery when the engine is running?

Indeed, a faulty voltage regulator is the likely culprit. To test it properly, you will need a multimeter. You should observe the voltage across the battery terminals with the engine running. Ideally, it should be around 14.4V. If it's significantly higher, that confirms the overvoltage. However, given the complexity of modern car electronics, I would strongly recommend taking your Praktik to a qualified workshop. They have specialized tools and expertise to diagnose and rectify such issues effectively and safely.

Just to let you know, the workshop confirmed it was the car battery and voltage regulator causing the overvoltage. A new battery and voltage regulator later, and everything's running smoothly. Cost me around 290€. Thanks again for the help!