christianhimmel15
Territory Weak Battery and Flickering Lights
Summary of the thread
A 2014 Ford Territory diesel with 106874 km was experiencing a weak battery and flickering lights, with diagnostics indicating a defective battery sensor. The issue was confirmed by checking the battery voltage, which dipped significantly during startup without any error codes. A faulty battery sensor was identified as the likely cause, potentially misreporting the battery's state of charge and leading to inadequate charging. Replacing the defective sensor resolved the voltage instability and flickering lights.
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4 comment(s)
christianhimmel15 (community.author)
I did check the voltage; it dips quite low during startup, and there are no stored error codes, which is puzzling. Could a failing battery sensor cause such a significant voltage drop without triggering any fault codes?
walterweiss1
Yes, a faulty battery sensor can definitely cause those symptoms, even without throwing codes. It could be misreporting the battery's state of charge, leading to inadequate charging. Given your symptoms and the lack of error codes, replacing the sensor is a reasonable next step, or you can bring the car to a workshop for a diagnosis. Considering the 315€ repair price, they might offer a better price and pinpoint the issue.
christianhimmel15 (community.author)
Thanks. I took it to a workshop and, as suspected, the battery sensor was defective. Replacing it resolved all the issues; voltage is now stable, and the lights are no longer flickering.
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FORD
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TERRITORY
walterweiss1
Sounds like a plausible cause. Have you checked the battery voltage with a multimeter, both when the engine is off and while it's running? Are there any error codes being thrown by the car's computer?