Starter Motors are a common failure but this component is often misdiagnosed. The incorrect diagnosis often occurs on X3 vehicles. I had a subscriber reach out to me asking for help after replacing the starter and then after a short time ended up with another no crank situation. I show you how to perform voltage and voltage drop testing and a quick way to check to see if the underlying problem is a corroded engine ground strap.

I would recommend the bulb style circuit tester. The LED digital ones cannot check amperage. Using the bulb style tester you can detect a dim light which would denote a loss of amperage.

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Bulb Style Test Light
https://amzn.to/3NMo4n3