12V Battery Cable help ASAP

Hang on Likeawind you had the most catastrophic burnout of the main B+ cable I have ever seen on this site in 16 years most likely because you reversed jump started it and usually that will also blow the 100 amp wire fuse in the main power box. Its not the cars fault.

It doesn't help after blowing up the 12 volt circuit to then buy the wrong 12 volt battery battery and cobble it up using shims. That's just horseshit and will continue to be a problem. The last thing this car will tolerate is nonsense in the 12 volt battery circuit.

IMHO Given its complexity the G2 is probably the most reliable Toyota car ever made if properly taken care of. The G2 is almost bullet proof I know I owned one for 15 years and still got $5000 for it when I sold it.

So take it easy I wouldn't swear off hybrids just yet lol...

 

Four blue bars but Fan was going nuts.

 

I don’t think I revers jumped it, that Cable was already burnt because I didn’t smell a thing. Also last owner installed the wrong battery and I bought the correct battery. I did buy the shims but never used them, went to junkyard and picked up proper negative cable. 100amp wire fuse was not burnt.

 

Generally speaking, when you have a red triangle there will be OBD2 codes stored in the ECUs (computers). Try using a toyota hybrid compatible OBD2 scanner to retrieve said codes, then post those codes in this thread for further guidance.

 

Clearly the hv battery has issues. It could be a clogged blower but it could also be bad hv battery cells or connections. Especially if somebody was in there trying to diy based on encouragement from this forum. But its 98% the hybrid battery assembly.

I still would want to know the root cause of that 12v battery cable meltdown. Root cause seems to be a foreign language to some around here. It means "The root cause is the core issue—the highest-level cause—that sets in motion the entire cause-and-effect reaction that ultimately leads to the problem(s)."

Around here symptoms are often confused with a root cause. A symptom is a result or factor that may exist because of the root cause, but by itself is not the cause.

 

I've seen a surprising number of threads now needing to replace that cable end and connector. By surprising number, I mean ok maybe three, but that's pretty surprising given the heavy gauge of the cable. Something does seem to happen there sometimes.

I wouldn't guess that the whole story is "burnout". It would take crazy high current to get "burnout" in an intact cable that thick, and there's a fuse at each end, at least one of which would blow first.

So I'm suspecting what happens is some combination of corrosion and flex. Goes through the strands of that cable one by one over time.

The end result may still look burned, because by the time it's down to the last three strands hanging on or whatever, normal high currents in the car would be enough to finish them off without being above the fuse ratings.

 

What could go wrong with the battery assembly? By the look, it seems fairly simple to put together. I think taking professional help at this stage would be beneficial for me. I just wanna start driving this thing worry free for at least two years.

 

I wonder if the bit of duct which exits near the battery can get displaced, for instance by being installed incorrectly. That might put some force on the cable and ultimately result in the scenario you describe.

 

Plenty. Bad modules, poor connections at the busbars etc. The problem is buying and installing used hv batteries.

Here in your first post is evidence.

Again more evidence that used modules were bad. Now the hv battery is overheating.

 

Yeah I agree with your analysis. should I get the refurbished installed by Hometown Hybrids or new?

 

Quite likely that other issues may appear in 2+ years. Have you checked the VIN at the dealership for any prior maintenance history?

I would first read the stored OBD2 codes, then proceed accordingly.

Jessica (Hometown Hybrids) does offer a 2 year warranty on refurbs. A new OEM is a better plan, and when/if you're done with this vehicle, either transfer it into another one, or sell the new battery to recover some of the extra expense.

 

New. No more hv battery issues for at least 150k miles.

 

vehicle has 127k miles and it runs good, I believe the hv battery is the only issue for now. I wanna drive to work everyday 25 miles each way. I bought it privately so no I didn’t check any records unfortunately.

 

Is there a substantial price difference?

 

Yes but its worth it. Even if the vendor will guarantee a used battery you will be down there a lot. Reliability will be less than grest.

 

https://www.sparksparts.com/oem-parts/toyota-battery-g951047031

This Is the cheapest brand new battery I have found. Go for it?

shipping charges are outrageous $537

May be this one in Dallas

https://www.toyotaofgrapevine.com/parts/shop.htm?path=%2Foem-parts%2Ftoyota-battery-g951047031%3Fc%3DZz1lbGVjdHJpY2FsJnM9YmF0dGVyeSZsPTExJm49QXNzZW1ibGllcyBQYWdlJmE9dG95b3RhJm89cHJpdXMmeT0yMDA4JnQ9YmFzZSZlPTEtNWwtbDQtZWxlY3RyaWMtZ2Fz

 

Dealership said they won’t sell it to me go figure

why advertise it for $1635 if you won’t sell it locally,

 

Hometown hybrid has new Toyota batteries. By the time you ship and pay a core charge with Sparks you have to pay $3400 plus install the cells and ship back the core. Let Hometown verify your issue and fix it. They will come to you in Houston.

 

What do you mean by install the cell? Isn’t all put together? I actually found one for $1635 locally and he is willing to sell me. It’s at the Toyota dealership

 

No its just the cells. If you diy you will get no warranty.