Cube Battery Draining

Whoa, that sounds rough! I had a similar issue with my Cube, I think it was a 2016 model. Same deal – weird error messages, lights acting possessed, and the battery just wouldn't hold a charge. Have you checked the voltage regulator? That was my first thought. Could also be a parasitic draw somewhere, but the sensor is a good starting point.

Voltage regulator, huh? I haven't checked that yet. Where is that thing even located on the Cube? And how would I test it? Is it something I can do with a multimeter, or do I need some fancy equipment? Also, how did you eventually figure out what was causing your battery drain?

Yeah, the voltage regulator is usually near the alternator. You can test it with a multimeter, just check if it's outputting the correct voltage when the engine is running. As for my issue, after tearing my hair out for a week, I took it to a trusted workshop. They quickly diagnosed a defective battery sensor, replaced it, and the problem was gone. Cost me around 315€. Honestly, save yourself the headache and get it checked out professionally. Could be other things, but the sensor seems like the most probable culprit based on your symptoms.

Thanks a bunch for the info! I'll check the voltage regulator, but you're probably right – I'll take it to the shop. Your experience with the battery sensor seals the deal. Knowing what it cost you is super helpful too, so I'm prepared. Really appreciate the help!