In extreme cold, car batteries lose power because low temperatures slow chemical reactions, reducing their power to deliver the high current needed to start the engine, as proven by research. Check the battery terminals for corrosion or loose connections, as these can block power flow even if the battery has a charge. If the battery is weak, jump-start the car and consider replacing b... https://www.coverfox.com/car-insurance/articles/what-to-do-if-your-car-wont-start-in-cold/