greta_fuchs1
Skoda Fabia Diesel Battery Drain Issue
Summary of the thread
A 2017 Skoda Fabia diesel was experiencing battery drain issues, indicated by error messages, weak lights, and sluggish engine starting. Diagnostics pointed to a defective battery sensor as a potential cause. Suggestions included checking the alternator's charging capability and considering the impact of aftermarket electronics like a dashcam. Ultimately, replacing the faulty battery sensor resolved the issue, restoring the vehicle's performance.
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4 comment(s)
greta_fuchs1 (community.author)
Thanks for the quick reply. I'll check the voltage. I have a dashcam, but it's wired to switch off with the ignition. Could a faulty dashcam still cause such a heavy discharge, even when supposedly off?
antonmueller1
The dashcam should be off, but they can draw power. However, given the error codes and the symptoms, a faulty battery sensor is a likely cause. They can cause issues with the charging system. With those symptoms and error codes, I'd get it checked by a workshop to save yourself the trouble.
greta_fuchs1 (community.author)
The battery sensor was indeed the problem. The replacement cost 315€, but the Fabia is running perfectly again. Thanks for the guidance.
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SKODA
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FABIA
antonmueller1
Sounds like an electrical issue. Have you checked the alternator is charging the battery while the engine's running? A multimeter across the battery terminals with the engine on should read about 14V. Any aftermarket electronics installed, like a dashcam or stereo? They can drain the battery even when the car is off.