I guess you can’t go wrong by changing the entire cable. It appears to be corrosion is concentrated on the positive terminal clamp. Is there a good YouTube video demoing positive cable replacement on Toyota RAV4? I couldn’t find it. I would like to see the steps.
I understand if that big retainer coming out the black sheathing breaks while replacing the clamp, then I’ll be in trouble. As of now everything around the clamp and clamp is holding well. No problem at this time.