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 Post subject: My 12V battery died
PostPosted: Thu Jun 28, 2018 6:36 pm 
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Joined: Fri Jul 21, 2017 5:23 am
Posts: 45
Location: Seattle, WA
Preamble: i did read and post the other threads about 12V, just staring a new thread to hopefully catch a few experienced eyes in case anybody has any advice. I'll be sharing my experience for the next person that comes along with such an issue.
Original thread is here: http://www.myrav4ev.com/forum/viewtopic.php?f=8&t=2245

Well... I'm a late comer... in many ways...
I got the 2014 model only a year ago (end of lease)
Today the car did not start. Same symptoms described here: No start, "check air bag", "Check EV system", Dim cabin lights.
I had the car jumped and was able to drive home.

The Check EV system warning message did not clear.

When I got home I checked the battery:
14V+ when on (so charging system seems to work).
12V when off...

I came to look for wisdom and after reading the battery threads I went back to check again. Battery down to 10V...
So I've taken out the battery... I'll find a replacement tomorrow.

Any advice or tips on what to do after replacing the battery once the error codes started?
I've read comments here and there that seem to suggest:
1. May need to clear error codes. Any ideas how?
2. May cause some real damage to the computer. *sigh*
3. Some procedure to reinstall the battery beyond boot and wait?


For the people who have gone past the "battery failed and got lots of error codes"
Any specific advice or stories on how to solve if either one of those happen?
I'm in Seattle, so if I have to get to a Toyota tech I'd have to start working on getting a tech scheduled...

thanks!

Next day update: Got an Optima Group 35 as recommended the next morning (~$250 from local Oreily auto shop). The car started up fine but the "Check EV system" light did not go away.
I'm now starting the saga of getting in touch with Toyota to see when a tech can take a look at it.
The car drives normally, even at 40mph. So hopefully the battery holds and it's just a warning light (fingers crossed)


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 Post subject: Re: My 12V battery died
PostPosted: Fri Jun 29, 2018 4:57 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 585
I would drive the car a few days or week and see if the light goes out.
Or simply turn off the car and disconnect the battery a few hours and reconnect. It may reset doing this in normal conditions.

Yes my battery was dead every few days for a while due to malfunction that Toyota could not find until about the fourth tow truck.


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 Post subject: Re: My 12V battery died
PostPosted: Fri Jun 29, 2018 2:09 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3991
Location: San Diego
1) I recommend a Group 24F battery, not the smaller Group 35.

2) Starting a new thread to hash over the same problems doesn’t sound like a good idea.

*********

Rav4 EV 12 volt Battery recommendations:

Quote:
Woke up to a dead RAV4 yesterday, the 12V was toast. Wouldn't even trickle charge. I bought the Bosch and replaced it. That's when all the problems started. At first, it wouldn't even slip into gear and I was getting all sorts of errors - EV System errors, airbag errors, power steering errors. After countless reboots, an hour on the J1772 charger, and more reboots, it finally returned to semi-normalcy and could at least drive it. But the EV System errors persisted, and this morning I took it in to the dealer.


Please, PLEASE, folks. Replace that original Toyota battery now... while this story is fresh in your mind.

You’re going to replace it anyway, and that replacement Bosch battery isn’t going to get any cheaper!

Please, stop the madness. Replace your Toyota battery, even if you’re too cheap or lazy to do so.

1) AGM (not flooded acid cells like the original)

2) Group 24F size

3) 60 amp/hour rating

https://m.pepboys.com/search/?term=bosch+24f+60ah+agm

Pep Boys # 0838890

Bosch S6508B S6 or Exide Edge FP-AGM24F battery with the correct specs is $150-$180. Units are built by Enersys.

Autozone also has a competing battery, built by Johnson Controls called Duralast Platinum for about $200:

https://www.autozone.com/batteries-star ... 8710_25697

**************

What is lost and needs to be reset with a 12 volt disconnect:

viewtopic.php?p=20859#p20859

1) Stored radio / SiriusXM stations will remain, however your last station listened to will likely be gone

2) Cell phone pairings are not 100%, so I would check. i have had to delete my phone (and the car from my phone) and re-pair it

3) Map display mode

4) Volume of navigation voice notifications

5) Random play modes

6) Charge schedule will be retained, but it won't work without hitting the "SAVE" button on the previous screen

7) state selection from destination address page


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 Post subject: Re: My 12V battery died
PostPosted: Tue Jul 10, 2018 2:21 am 
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Joined: Mon Aug 07, 2017 4:55 pm
Posts: 98
Location: Duvall, Wash.
KurtManz wrote:
Next day update: Got an Optima Group 35 as recommended the next morning (~$250 from local Oreily auto shop). The car started up fine but the "Check EV system" light did not go away.
I'm now starting the saga of getting in touch with Toyota to see when a tech can take a look at it.
The car drives normally, even at 40mph. So hopefully the battery holds and it's just a warning light (fingers crossed)


Kurt, any update?

_________________
Regards,
Al Savage
2014 Rav4 EV, Shoreline Blue Pearl, #2609, first use 04Jun2014, 49k miles (Aug2017), OpenEVSE 40A. First DU replacement May2018 59k.
2018 Model 3 LR AWD, blue
1999 E300 on B100 (sold Sep2018)
http://nissandiesel.dyndns.org


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 Post subject: Re: My 12V battery died
PostPosted: Sat Jul 14, 2018 5:16 pm 
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Joined: Fri Jul 21, 2017 5:23 am
Posts: 45
Location: Seattle, WA
The end of that story was that it was just a warning light that didn't clear itself up.
I ended up taking it to Toyota (of Kirkland), schedule a traveling mechanic.
They reset the warning "on the tesla side" (to make sure I knew it was "not their fault") for a 'mere' $150 which was not covered under the Toyota warranty because it was a "software update"...

*sigh*… so lesson learned... don't let the 12v battery run out.


Last edited by KurtManz on Mon Jul 16, 2018 3:55 am, edited 1 time in total.

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 Post subject: Re: My 12V battery died
PostPosted: Sun Jul 15, 2018 3:42 am 
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Joined: Mon Jun 03, 2013 6:43 am
Posts: 273
Location: Redwood City, CA
KurtManz wrote:
I ended up taking it to Toyota, schedule a traveling mechanic.
They reset the warning "on the tesla side" (to make sure I knew it was "not their fault") for a 'mere' $150 which was not covered under the Toyota warranty because it was a "software update"...


Now THAT is taking ownership of a problem! Funny, but my car has only 1 emblem or name on the front or rear - it says Toyota, and they have worked hard to hide the Tesla name in our cars.

_________________
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2013 Chevy Volt (my wife's)
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 Post subject: Re: My 12V battery died
PostPosted: Thu Jul 19, 2018 7:53 pm 
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Joined: Fri Jul 21, 2017 5:23 am
Posts: 45
Location: Seattle, WA
So here's the post-credits scene...

Toyota national called to ask me how things had gone with my experience with the repair of the car..

I mentioned that they had fixed the problem, but that I was kind of disappointed that they had charged me $150 to reset a warning light.

I understood they had found nothing wrong... but the car's diagnostics said something's wrong... which in and on itself *is* something wrong.
I may have gone a bit too Zen on that conversation.

About a week later they called me and offered me a 'one time courtesy' to refund the $150... so according to that I should receive a check in 4-6 weeks...

it's good to see they're willing to take care of customers of these unique cars...


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 Post subject: Re: My 12V battery died
PostPosted: Fri Jul 20, 2018 12:54 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 585
I am still waiting for my $200+ refund for wrongly charging for a 12v battery replacement on the basis that it was aftermarket and too large.
(it was the gateway computer)
Phooey on Toyota.


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 Post subject: Re: My 12V battery died
PostPosted: Fri Jul 20, 2018 5:11 pm 
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Joined: Mon Apr 01, 2013 11:42 pm
Posts: 268
Location: San Diego, CA, USA
smkettner wrote:
I am still waiting for my $200+ refund for wrongly charging for a 12v battery replacement on the basis that it was aftermarket and too large.
(it was the gateway computer)
Phooey on Toyota.

Do you mean they promised one and didn't send it, or that you just deserve one?


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 Post subject: Re: My 12V battery died
PostPosted: Sat Jul 21, 2018 2:42 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 585
No promises. Just poor diagnostics. New 12v battery installed. I protested but Carson Toyota said it was fixed. They had it a week and I was out of town. I begged them to test drive daily. They refused. Two days later it was on a tow truck to Irvine Toyota.

Reminded me of the old days of just replacing parts until by random chance the vehicle keeps running. I had laid it all out for them but I am just another idiot customer :roll: :evil:

The 12 volt battery was 2 weeks old. The Bosch group 24 AGM. Perfectly good new 12v battery.


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