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Video: Can a Weak Battery Start an Engine, But Cause Codes?

A weak battery that may appear to have a good state of charge and crank the engine, can cause issues with the vehicle’s networks, including codes for loss of communication.

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Many late-model vehicles measure the battery’s state of charge, internal resistance and even temperature so the customer can be warned the battery needs replacement. This video covers what you need to look for when inspecting the battery. Sponsored by MAHLE.



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