Q: Car battery overheating

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My car's battery overheats when the key is on.

This is a safety hazard and should be addressed by a certified mechanic. Battery’s hold down brackets often become loose and can get caught between the battery’s posts causing a short. This can mean a wiring problem that can involve an electrical component with an internal short. Have a mechanic, like the ones at YourMechanic, come by and take a look.

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