Leaf Auxiliary Battery Low Voltage Error

I'm getting an error message and seeing electrical malfunctions in my 2021 Nissan Leaf (electric motor) with 195306 km. The car seems to have a weak battery during startup, and I suspect the auxiliary battery isn't charging properly. Anyone else experienced low voltage issues with auxiliary power impacting car electronics?

4 comment(s)

I had similar issues with my Leaf, though I didn't note the mileage. Check your auxiliary battery voltage. A voltage drop often triggers those errors. Was the error related to low voltage?

Thanks! Could you give more details about the error you saw? Knowing the fault codes would help me narrow down the causes. Did you also have trouble starting the car or notice other electrical problems?

Yes, the error was related to low voltage on the auxiliary battery, and the symptoms were nearly identical. Given that, and your mileage, you may want to have the battery tested at a workshop. I had mine replaced.

Good to know. A workshop visit seems right. I replaced the auxiliary battery, which cost 290€. Thanks for the help.

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