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    Can a bad battery cause a 2015 Mazda BT-50 to cut out?

    The engine in my 2015 BT-50 cuts out. It started again and got me home with no limp mode, but the power-train, battery and oil light all came on when it cut out. I was told a sad battery could cause this? The vehicle is still on its original battery and I reckon it's a bit suss; with the car’s radio on at work, I’ve had to jump start it to go home. Any thoughts?

    Answered by CarsGuide
    18 September 2020
    David Morley

    Modern cars absolutely hate a battery that is not holding charge properly or not fully charging in the first place. If the computer and the various sensors around the car aren’t getting the correct voltage form the battery, they can decide to shut down or go slightly crazy, causing rough running, poor fuel consumption and hard starting (to name just a few symptoms).

    A radio playing on a job site really shouldn’t flatten a battery in a few hours, but are you leaving the doors open and, therefore, the interior light on at the same time? That could definitely flatten the battery. The rule of thumb is that you should expect about five years from a battery, so on that basis, yours is definitely a chance to be ready for replacement. Test the battery under load (when cranking the engine) to see how much current it’s delivering under stress.

    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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