How to Troubleshoot the Automobile Battery Terminal Corrosion
If you don’t drive your car regularly, the automobile battery terminal corrosion arises more often. When the engine is not running and the battery is sitting, the terminals oxidize at a faster rate. This means you need to check the battery terminals more often for corrosion. Corrosion appears as a white, ashy deposit around one or both battery posts. Sometimes there is also a bit of color mixed in. These deposits are the result of one of several possible chemical exchanges involving vapors and the battery post.
Before starting to clean the terminal, you need so tools to help you complete this job. You need a combination tool, locking pliers (vice grips), toothbrush, baking soda, water, clean, lint-free cloth, wrench, and grease or petroleum jelly. The combination tool generally comes in two designs, one employing wire brush elements and the other using two cutting blades and a reamer. Though old pros prefer the latter, either will work and either is suitable if you’re not cleaning battery posts on a daily basis. If these supplies are ready, I am sure you can start now.
1. Remove the battery cables from the battery terminals by loosening the nut on each cable clamp. Once they are loose, always remove the cable clamp from the negative terminal first. It’s marked with a minus (-) sign; the positive terminal has a plus (+) sign. Reverse the procedure, positive first, negative second, when replacing the cables. The cable may not come off easily. You will have to wiggle it and lift it upward until the clamp comes off the terminal post. Sometimes, especially if there is a lot of corrosion, you may need the assistance of pair of locking pliers. Be careful not to short any tools you use against the car when they’re in contact with the battery.
2. Examine the automobile battery cables and clamps for excess wear or corrosion. Should damage appear extensive, replace the cables and clamps to avoid future problems.
3. Check the battery case for cracks and the terminals for damage. If you find either, replace the battery.
4. Secure the loose cables so that they don’t accidentally flop back onto the terminals.
5. Pour some baking soda directly onto the posts.
6. Dip a toothbrush in water and use it to scrub the baking soda into the terminal posts and cable clamps. Skin and eye protection is recommended.
7. If the toothbrush isn’t doing the job, Use a battery terminal cleaner brush on it. Also shine up the insides of the cable clamps by using the clamp cleaner that usually comes attached to the terminal brush or use a plain, soap-free steel wool pad.
8. Dry everything off with a clean, disposable, lint-free rag.
9. Smear grease or petroleum jelly on the posts to slow down the formation of corrosive deposits. Cover all exposed metal surfaces on the battery posts, battery cables, and clamps.
10. Replace the positive clamp first and then replace the negative clamp. Tighten them down with the proper sized wrench.
11. Replace the rubber boot or plastic shield that covers the positive terminal. If you don’t have one, go and buy some from your local auto parts store.
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