Toyota Rav4 EV Forum

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PostPosted: Sun Sep 02, 2018 3:54 pm 
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Last edited by SpicyUnagi on Fri Jan 18, 2019 7:15 pm, edited 2 times in total.

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 Post subject: Re: Probable Gateway ECU Failure -- Read On
PostPosted: Mon Sep 03, 2018 9:37 pm 
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Did you just change the 12V battery?

If so, the fault may have arisen due to the battery change. Have you tried powering up with the charger fuse pulled out, switch off, put the fuse back in, and power up again? It may also need the fault codes to be cleared.

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PostPosted: Tue Sep 04, 2018 1:09 pm 
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Last edited by SpicyUnagi on Fri Jan 18, 2019 7:15 pm, edited 2 times in total.

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 Post subject: Re: Probable Gateway ECU Failure -- Read On
PostPosted: Wed Sep 05, 2018 5:54 am 
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How much does it cost to replace the Gateway ECU?


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Last edited by SpicyUnagi on Fri Jan 18, 2019 7:15 pm, edited 2 times in total.

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 Post subject: Re: Probable Gateway ECU Failure -- Read On
PostPosted: Wed Sep 05, 2018 9:15 pm 
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Location: San Diego Co
The warranty should have a provision for a rental car. Have the dealer set it up for you.

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 Post subject: Re: Probable Gateway ECU Failure -- Read On
PostPosted: Thu Sep 06, 2018 9:52 pm 
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Location: Salisbury, NC
FYI P312F is not a gateway failure code; it's a generic error code from the gateway to tell the Toyota side of things to turn on the MIL (ie 'Check EV System'). By plugging into the diagnostics connector on the gateway, the tech should be able to see which of the 100+ Tesla fault codes is active and/or is shown in the history.


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PostPosted: Sat Sep 08, 2018 3:28 pm 
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Last edited by SpicyUnagi on Fri Jan 18, 2019 7:15 pm, edited 2 times in total.

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 Post subject: Re: Probable Gateway ECU Failure -- Read On
PostPosted: Sat Sep 08, 2018 5:53 pm 
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Location: San Diego
hokiematt wrote:
FYI P312F is not a gateway failure code; it's a generic error code from the gateway to tell the Toyota side of things to turn on the MIL (ie 'Check EV System'). By plugging into the diagnostics connector on the gateway, the tech should be able to see which of the 100+ Tesla fault codes is active and/or is shown in the history.


Are you a Toyota trained technician?


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 Post subject: Re: Probable Gateway ECU Failure -- Read On
PostPosted: Mon Sep 10, 2018 7:09 pm 
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TonyWilliams wrote:
hokiematt wrote:
FYI P312F is not a gateway failure code; it's a generic error code from the gateway to tell the Toyota side of things to turn on the MIL (ie 'Check EV System'). By plugging into the diagnostics connector on the gateway, the tech should be able to see which of the 100+ Tesla fault codes is active and/or is shown in the history.


Are you a Toyota trained technician?


The DTC descriptions are available to anyone with a factory service manual.

Toyota is my employer, however any views expressed in this forum are my own.


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