JeffKeryk

Batteries corrode the positive terminal if they are over charging or just old.
The Lexus 86 month battery in our 2013 GS350 F Sport has been in the car for almost 6 years Gas was corroding the positive terminal; I cleaned it a month ago and checked it yesterday. Blue corrosion again. Decided to just swap out the battery to stop further damage to starter wire, etc.

Bought a Costco Interstate Group 24 battery, pulled out the Lexus battery and dropped the terminal in a cup of baking soda and hot water. Fizzed up nicely. Anyways, the terminal is toast; part is corroded away.
Online, Lexus wanted like $38 for a new positive terminal, part # 90982-05062.
I did clean the cables, tray, etc; they seem OK but internally? Dunno for sure.

Went to the huge Toyota dealership parts to save a few bucks on terminal and stock up on a few oil filters for friend's and family's cars I service. Yep, they had the positive battery terminal; $58. No thank you...
Off to Lexus of Stevens Creek; they think their cars are made out of gold but the parts department is excellent. Gave me 10% discount. 42 bones out the door, including the governor's tax. Ouch! What's a poor boy to do?

A little dielectric grease at the base of the post is a good idea. I ordered the Noco anti-corrosion pads from Amazon. Back in business!

jgscott

iTrader: (1)

#1 thing for Battery corrosion is..... a New Battery that is Not corroding. I always used a bit of Axel greased coating very lightly.

JeffKeryk

A little dielectric smear can't hurt. But as you say, a new battery is the cure.

mazstar

The stock cables suck. I kept getting corrosion on negative and having to replace batteries 2-3yrs because the plating corroded and from there on kept collecting corrosion. Replaced the stock with a thicker gauge aftermarket and it looks like new. Got rid of the cover as well.