Car will not start and hear buzz?

So, even if the system comes on it could be low on voltage/amperage. If the battery is more than 3 years old, I would remove it and take it to an auto parts store for testing which they will do for free.

Here is a guide to help with the steps and how to do the job on your car:

https://www.2carpros.com/articles/how-to-replace-a-car-battery

You can help confirm the failure if you use a voltage meter on the battery on try to crank the engine over while watching the battery voltage which should not drop below 10 volts.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

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