Protect Car Computer When Changing Battery
Changing the battery in your car is a relatively simple process, and one you can do yourself. However, itís important to remember that most vehicles these days have a main computer, so you need to protect the memory. This computer technology runs your car, the car stereo, even the clock. The battery is the source to run these things, even when the car is idle, so it can lead to draining its power.
Before you begin the process of changing the battery, youíll need to plug in a ďmemory keeper.Ē It has a sealed 12v battery inside it. You need to plug it into the DLC pins 4 and 5, which are the grounds, and pin 16, which is the battery voltage. Itís important to remember to protect the positive battery cable end from shorting when itís disconnected from the battery. Itís also best to limit what is ďonĒ when you do this.
Once this is done, you can begin the process of disconnecting the battery. Obviously, make sure the engine is off. First detach the negative, or black battery cable, with battery pliers or wrench. Itís best to use a battery terminal puller so you donít damage the battery terminal. Then you can disconnect the positive, or red battery cable, just as you did for the negative one.
Next, use a combination wrench to remove the battery hold-down clamp. Now you can take the battery, but be prepared as some batteries are heavy. If it has a handle, use that to lift it out. If there is corrosion on the battery tray and hold-down clamp, use a mixture of baking soda and water, dip a wire brush in that and then clean it. If there is heavy corrosion, you can purchase battery cleaning solution. Now you can put the new battery in the tray and secure it with the hold-down clamp. Attach and tighten the positive cable first, then the negative cable.
Please keep in mind that while changing a battery is a relatively simple task, battery acid is very corrosive, so donít let the acid come in contact with your hands, body, clothes or the paint on your car. You should wear protective gloves and goggles. The old battery is hazardous and has to be recycled accordingly.
If the battery dies while youíre on the road, the best solution is to let a trained technician handle this for you.
Johnny Nocera has been on the radio airwaves in Southwest Florida with ďDr. Johnnyís Car ClinicĒ WGUF New Radio 98.9 FM every Saturday morning from 9-10 for over 27 years. He also owns, along with his sons Jr. and Jimmy, Supreme Auto and Collision located in downtown Naples, and has been in business for more than 38 years.