Your vehicle only needs a few electrical components to start and stay running, however there are many other electrical systems that rely on those components in order for your vehicle to function properly. We use more powerful equipment to test these systems to ensure proper diagnostics, so that you count on your vehicle to start.
Many times people will call after their vehicle has not started and say, they don’t think the problem is their battery, because someone else tested it and said it was okay. When we test it with our equipment, it indicates that it is failing. Our equipment can test more often with more cold cranking amps to ensure it is properly tested.
Your battery is necessary to provide power to the ignition & the starter. Batteries typically last 3-5 years, but they can start to fail or have bad connections because of corrosion. You should start having your battery tested at around 3 years or if you notice it has a slower start. If a battery has failed or has a bad connection, sometimes you will hear a rapid clicking. If the battery is completely drained, you may not have any dash lights or other power to your vehicle.
Your alternator maintains your battery’s state of charge while the vehicle is running.
When you turn the key in the ignition, it’s the starter that cranks the engine together the vehicle running. When starters go bad, then the engine will either not crank or could possibly crank too long.