How to stop battery terminal corrosion?

2015 TOYOTA RAV4
81,000 MILES • 4 CYL • 4WD • AUTOMATIC
Avatar
DIDI7154
  • MEMBER
  • 30 POSTS
Hello, my battery, 4 years old, keeps getting corrosion and foam around the terminals and the battery itself. I’ve charged it and added distilled water to the battery, and it is functioning fine. I’ve cleaned the terminals a few times, but the corrosion keeps coming back. What is causing the corrosion and how can I get it to stop?
May 9, 2022 at 8:25 AM
Advertisement
Avatar
STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
Check the alternators charging voltage. If it charges at a higher voltage, it is likely the cause of the problem.

https://www.2carpros.com/articles/how-to-check-a-car-alternator
May 9, 2022 at 9:44 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.