georgdunkel1
Seicento Electric Battery Sensor Issue
Summary of the thread
A 2000 Fiat Seicento electric is experiencing battery issues, including error messages on the speedometer, weak lights, and a weak battery signal when starting. The problem could be due to a defective battery sensor, as suggested by error codes. A workshop visit confirmed the issue, and the sensor was replaced to resolve the problem.
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4 comment(s)
georgdunkel1 (community.author)
Terminals look clean and tight. I haven't measured the voltage yet. What voltage range should I look for to confirm a bad sensor?
laura_moeller9
If the terminals are good, a low voltage (below 12V) after sitting overnight suggests a parasitic drain or bad battery. Given the error codes, a defective battery sensor seems likely. I'd suggest a workshop visit for diagnosis and sensor replacement.
georgdunkel1 (community.author)
Took it to a workshop, and they confirmed it was a defective battery sensor. Repair cost was 315€.
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FIAT
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SEICENTO
laura_moeller9
Sounds like battery drain. Have you checked the battery terminals for corrosion or loose connections? What's the voltage reading when the car is off?