P0AA6, car won't start unless jumped, other codes

Brondo electrolytes?

 

Many use a hybrid compatible OBD2 scanner.

Some have used a voltmeter on the individual modules.

 

Cleaning up the case, harness, and neutralizing the electrolyte is always a good idea, then see if the code(s) return.

If they haven't outright failed you may have to let them sit until the leaking modules show a voltage droop, which could take days.

Or drive around while using a scanner that shows block voltages in real time, the failing blocks should show up will braking and accelerating.

 

Do you have a load tester? Wouldn’t a bad one drop voltage quicker than the others?

 

Yes, and until it has been leaking awhile it might not show any adverse voltage readings.

If you didn't clean up the case, you should have, so if you didn't you need to strip it down clean the case and it wouldn't hurt to clean each module individually as well. That way you are starting from a known baseline. If more electrolyte shows up down the track, you should be able to easier pinpoint from where it came.

 

The electrolyte is clear (as water) and hard to see but it is just a basic (as in not acidic) solution, so any mild acidic cleaning solution should neutralise it and clean it off easily. Perhaps you are mistaking the corrosion damage to the case for the electrolyte. Without seeing what you are seeing it is hard to give specific advice on how you should proceed.

 

I did see that earlier, but it is hard to tell whether that is all corrosion (which is what I am leaning to) and whether there is residual electrolyte on it or not.

But if you have given it a good scrub with an acidic solution and then rinsed off with water and dried it thoroughly, you should only be left with corrosion damage to the case.

I haven't had to clean up a case before, so I probably cant't say specifically what to do from here. Perhaps others who have done it can chime in with what they do.

Is it worth sanding it a bit and then treating with some corrosion control solution?

 

You've got a lot of corrosion on the base of the modules.
Y don't you removed all the modules, and clean up the metal base if the pack casing?
As you do all the cleaning, inspect the base of the modules to see if there are any traces of electrolyte.

 

As for me, I have sand it before, and applied a bit of corrosion treatment against future corrosion.
So, it can be done.

 

Yes as in with your tongue wet finger stick to white stuff stick to tongue again determine is battery acid or not also the way you check a 9 volt battery come on now.