Battery corrosion - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 05-24-2011, 07:33 PM
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Battery corrosion

Anyone else have this much corrosion on their battery? Or maybe it's a problem with mine only.
I haven't seen it this bad since my '68 Dodge.


'13 Venza, V6 AWD

Last edited by robertag; 05-24-2011 at 07:35 PM.
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#2 Old 05-24-2011, 08:30 PM
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That's pretty bad. I would suggest you get rid of as much of the corrosion as you can (use a wire brush or something like that). There are a lot of products on the market to prevent corrosion, but an easy remedy is to simply apply a coat of grease, spray it with white lithium grease, or even smear vaseline on the terminals. You can even create your own "fix" so long as you remove the corrosion first, then apply something that will "stay there" to prevent further corrosion. Good luck.
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#3 Old 05-25-2011, 07:12 AM
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Thanks. I did all that already, actually used baking soda to neutralize the acid.

I was just wondering if anyone else had the same issue so I can get the dealer to look into it if it's only me.

'13 Venza, V6 AWD
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#4 Old 05-25-2011, 07:40 AM
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I've used baking soda in the past and it works great. WD-40 also works great. I was thinking about your post and the picture and I would be very surprised if anyone else had that problem - unless they changed their own oil and didn't check the battery. Whoever changed your oil should have taken care of that for you - in fact, I think whoever changed your oil should have prevented that corrosion from ever occurring. If you did it yourself you probably will make sure this doesn't happen again, but IF you have been paying someone to change your oil (or if you paid someone to perform 5k/10k checkups, etc) I would question anything else they did and probably look elsewhere for future services.
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#5 Old 05-25-2011, 08:02 AM
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Guess what...the dealer changes my oil. Unfortunately, last time I was there I forgot to mention it and I don't have time to go back just for that.

'13 Venza, V6 AWD
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#6 Old 05-25-2011, 10:09 AM
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You shouldn't "have to tell" the dealer. It didn't happen overnight. If that is how they handle the small / routine stuff I would be very hesitant to trust them with anything. Just my 2 cents worth.
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#7 Old 05-25-2011, 10:36 AM
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Take it back to dealer.

Either you got a bad battery (top of case should not leak electrolyte)
Or you battery is overheated, such as over charging the battery and the electrolyte is boiling out. Either way, the battery is under warranty.

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#8 Old 05-25-2011, 10:48 AM
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You ought to use felt terminal protectors and also apply terminal gel. Works like a charm, and never have had corrosion on any of my vehicles using them the last twenty years or so.

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#9 Old 05-25-2011, 11:51 AM
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Quote:
Originally Posted by Hajoca View Post
Take it back to dealer.

Either you got a bad battery (top of case should not leak electrolyte)
Or you battery is overheated, such as over charging the battery and the electrolyte is boiling out. Either way, the battery is under warranty.
Thanks neighbor (I'm in Vaughan too). I think I'll take your advice.

'13 Venza, V6 AWD
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#10 Old 05-25-2011, 12:27 PM
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Quote:
Originally Posted by TrailDust View Post
You ought to use felt terminal protectors and also apply terminal gel. Works like a charm, and never have had corrosion on any of my vehicles using them the last twenty years or so.
When I had my 15K mile service I requested a more detailed level of service which included adding the felt terminal protectors and applying terminal gel. My dealership has a very good service dept that actually wipes down and cleans up the dust and grime on the engine cover, battery, etc., when they service the vehicle. When I open the hood it looks just like it did when I picked it up 21 months ago.

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#11 Old 05-25-2011, 01:54 PM
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this happens when the battery holdowns are WAY too tight. It presses down on the
battery causes it to leak at the top. but this is something the dealer should have taken care of. Cleaning the corrosion is usually something the dealer should do. I would take it back have them test it out. and clean the mess and replace the battery hold down. it might be a little messy underneath the batter. so have them pressure wash it for you as well. they should actually replace the battery since it's obviously leaking.
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#12 Old 09-14-2011, 01:14 PM
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Angry

I finally got the battery looked at a couple of days ago. Of course, the dealer refused to replace the battery under warranty. This is their solution:


At this point, I sent Toyota customer service a "terse" e-mail and their reply is that I am basically SOL:
"Please be advised, as per your Owners Manual Supplement, the battery condition is an owners responsibility."
So, between the bad battery, rusting hood and leaky hatch, I'm stuck with a car that will be worth considerably less that the lease buyout in 2 years. And if I want to return the car at the end, I'll have to spring for a paint job and probably a new battery.

'13 Venza, V6 AWD

Last edited by robertag; 09-14-2011 at 01:19 PM.
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#13 Old 09-14-2011, 02:20 PM
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Quote:
Originally Posted by Throck View Post
You shouldn't "have to tell" the dealer. It didn't happen overnight. If that is how they handle the small / routine stuff I would be very hesitant to trust them with anything. Just my 2 cents worth.
Exactly!! WOW...that is very sad to see. My underhood gets detailed 2x per year on all my cars by the 1 I can trust...ME. This forces you to look around and inspect for anything loose or out of place. A few rags, armor all, wd-40, and cleaner of your choice go a long ways to keeping her looking like new.

I'm not sure thats all battery corrosion I'm seeing. Look at the airbox, how did it get so muddy looking??

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Last edited by Verndog; 09-14-2011 at 02:24 PM.
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#14 Old 09-14-2011, 02:26 PM
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Quote:
Originally Posted by Throck View Post
You shouldn't "have to tell" the dealer. It didn't happen overnight. If that is how they handle the small / routine stuff I would be very hesitant to trust them with anything. Just my 2 cents worth.
The dealer I just went to is not the same one I've been using up until this time. I also had them look at the rust on the hood with the same result; "tough".

'13 Venza, V6 AWD
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#15 Old 09-14-2011, 06:15 PM
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Rust on the underside or topside of the hood? To me and Hajoca, the battery looks like acid actually flowed out from fill hole covers. Possibly due to overcharging. Did the dealer check the charging system? it may be possible the battery is defective. Remove the fill caps and check the fluid level. If any are dry take the car back to your regular dealer. If all cells are dry do not use the car. Call your dealer instead. I've never seen corrosion on terminal post cause rust on the hood.
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