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    Does the 2014 Ford Ranger have a variable-voltage alternator?

    Ford Ford Advice Ford Ranger Ford Ranger Advice Ford Ranger 2014

    I'm thinking of installing a dual battery in my 2014 Ford Ranger. Do you know if it has a variable-voltage alternator so I can decide on how to proceed?

    Answered by CarsGuide
    7 February 2023
    David Morley

    That model Ranger does, indeed, have what’s called a variable-voltage or `smart’ alternator. The idea is that when the car’s main battery is fully charged, the alternator reduces its workload to save fuel. But the reality is that the system doesn’t always recognise that accessories (like a second battery) have been fitted to the car. If that happens, the alternator doesn’t always make enough power to keep accessories like that second battery system fully charged. Which means that suddenly, your car-fridge won’t run overnight.

    The good news is that this smart function is purely electronically controlled, and a Ford dealer can disable it for you, returning the alternator to conventional operation.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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