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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Mon Aug 29, 2016 5:13 pm 
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Joined: Mon Apr 01, 2013 11:42 pm
Posts: 269
Location: San Diego, CA, USA
Had to replace my battery last week. Went on vacation and 5 days without being driven resulted in a dead battery. Since I was at 34k miles and 2.5 years, I figured it was time to replace it so I just picked up a new one at Costco. I could have tried to get the dealer to replace it under the 3yr/36k bumper to bumper, but it honestly wasn't worth my time to drag it in and deal with the dealer when I could have the car back up and running for $70 and a half hour of my time.


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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Tue Aug 30, 2016 3:03 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 589
Picked up the car today. All Irvine Toyota could do is replace the 12v battery one more time :roll:
Just measured the vehicle draw after parked 30 minutes. Same 2 amp draw.
I assume it will be back on the tow truck next week.

Should I call someone at Toyota? Who do I talk to?


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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Tue Aug 30, 2016 3:56 am 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3999
Location: San Diego
smkettner wrote:
Picked up the car today. All Irvine Toyota could do is replace the 12v battery one more time :roll:
Just measured the vehicle draw after parked 30 minutes. Same 2 amp draw.
I assume it will be back on the tow truck next week.

Should I call someone at Toyota? Who do I talk to?


Obviously, they are completely clueless. This isn't troubleshooting; it's guessing (badly) and part swapping.

I would find the current draw. It won't be that hard with a few simple tools and a few hours of time.


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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Tue Aug 30, 2016 4:48 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 589
It is fuse #9, G/W-B 10A Multiplex communication system. When pulled first this drops about 500 milliamps. (I speculate this draw could be normal)
Next is fuse #10, RADIO 30A Audio system. When this fuse is pulled next... current drops to virtually zero. (this has to be wrong)

When these are reinserted after about 60 seconds the current draw remains at zero.

Restart the car. Let idle in neutral 60 seconds and shut down.
Withing two minutes of varying 3 to 6 amp draw the car is back to sleep at 2 amps draining from the battery.

Anyone have a healthy vehicle to compare this to?


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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Sat Sep 03, 2016 7:19 pm 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 589
Dealer is replacing an ECU today. Should be ready on Tuesday. Fingers crossed.


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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Sat Sep 03, 2016 11:05 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3999
Location: San Diego
smkettner wrote:
Dealer is replacing an ECU today. Should be ready on Tuesday. Fingers crossed.


Another guess? Or, they actually isolated the power drain to this device?


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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Sun Sep 04, 2016 5:32 am 
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Dealer says they talk with Toyota engineer (via phone?) to assist in the diagnosis and get approval for warranty repair.
I have no idea what was tested or the results. Customers don't really get to talk with the technician.
I did give the service writer my findings.... again.

Will see what the bill says on Tuesday. Service writer said it was a $4,000 Toyota part available locally.


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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Sun Sep 04, 2016 5:49 am 
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Joined: Thu Jan 17, 2013 11:13 pm
Posts: 1711
Location: Los Altos, CA
I'm guessing that they will change the NAV head unit.

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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Sun Sep 04, 2016 11:24 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3999
Location: San Diego
smkettner wrote:
Dealer says they talk with Toyota engineer (via phone?) to assist in the diagnosis and get approval for warranty repair.
I have no idea what was tested or the results. Customers don't really get to talk with the technician.
I did give the service writer my findings.... again.

Will see what the bill says on Tuesday. Service writer said it was a $4,000 Toyota part available locally.


I would keep EVERY scrap of paper of this exchange, including what you told them and when.

Particularly if the ultimately replace the Nav unit.


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 Post subject: Re: RAV4-EV number 2501 - EXCESS 12v LOAD WHEN OFF
PostPosted: Fri Sep 09, 2016 4:16 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 589
Paperwork says Gateway ECU replaced. Only drove it home and the displays work perfectly again.
I believe this would be covered under the 60/60 drive train warranty.

Kills me to buy the extended warranty just to get 36 months and possibly about 60k extra miles.
I suppose it will be easier to sell when the time comes. Rather put the money toward a Tesla.

Can't believe I have been having this issue since February and a bit before.

This is the part listed: http://www.overstockoemparts.com/oe-toyota/898810r011
Doubt a shade tree guy can replace this without some equipment to program.


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