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22 Ιουν 2022 · The most common reason for battery light illuminating in Ford Focus is faulty alternator. But the battery light can also come on due to a damaged wire, corrosion on electrical connectors, corrosion on battery terminals, bad ground connection and slipping serpentine belt.
2 Δεκ 2019 · If your Ford Focus’s battery light is on, it is trying to warn you that there is an issue with the charging system. The charging system itself is relatively simple. The battery light comes on because the voltage level at the battery is too low.
6 Ιουλ 2022 · This is a common issue on Ford vehicles which results in a lot of unnecessary alternator replacements which do not fix the problem.
22 Ιουν 2011 · Most of the time a battery light indicates a problem with the internal regulator on the alternator itself. Check the main charging fuse as well. Save Share
21 Οκτ 2022 · Ford Focus battery lights indicate that the battery is not charged. There could be a problem with the battery, so it no longer wants to charge. The battery could have also been drained overnight if the lights had been left on overnight.
25 Απρ 2011 · Any time the battery light illuminates while driving, it's an indication of a fault in the charging system: check the alternator, voltage regulator, battery and/or associated wiring. The mechanical drives and belts seem to not give problems too often - or if they do - they make enough noise to draw attention to themselves.
24 Ιουν 2006 · My battery light came on, and has been on, all day today while I have been driving. I know this usually means bad alternator, weak bateery, or loose wires somewhere. So I bring out the DMM and do some testing. After I first noticed the battery light come on, I have to drive about 5 miles to home.