When your vehicle is acting up, one of the very first things to check is the battery terminals. Battery terminals can get corroded, lose, rusty, you name it, and when they do, every single thing that runs off electricity in your car can be affected. But it's easy to fix. Just a simple cleaning can make the electrical connection at you battery terminals like new, and eliminate all the issues corroded terminals can cause. Ive seen people sell cars for next to nothing because they didnt run right when the battery connections were the only thing at fault......Don't let that be you.