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 Post subject: Battery light on!!!
PostPosted: Mon Dec 03, 2018 9:08 am 
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Joined: Fri Nov 30, 2018 9:34 am
Posts: 5
Hi, I have a problem with RAV4.
I have 12V battery signal all the time on (small read battery on the speedometer) I am not sure that it is for a 12v system malfunction.
I had some problems with the main battery (contactors was replaced) no faults in the Tesla system side, but light still lights on all the time.

Does anybody experience that light on? What does this light stand for?

Thank you!!!!


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 Post subject: Re: Battery light on!!!
PostPosted: Mon Dec 03, 2018 2:03 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 4035
Location: San Diego
stradivaria wrote:
Hi, I have a problem with RAV4.
I have 12V battery signal all the time on (small read battery on the speedometer) I am not sure that it is for a 12v system malfunction.
I had some problems with the main battery (contactors was replaced) no faults in the Tesla system side, but light still lights on all the time.

Does anybody experience that light on? What does this light stand for?

Thank you!!!!


The DC to DC converter may have failed. Turn the car to READY (ON), and use a voltmeter to measure 14 volts (plus or minus 0.5 volts) on the 12 volt battery.

If you have 12.7 volts or less, the DC to DC has failed.

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 Post subject: Re: Battery light on!!!
PostPosted: Tue Dec 04, 2018 10:07 am 
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Joined: Fri Nov 30, 2018 9:34 am
Posts: 5
It is charging, I have measured 14,3V in Ready modus.

Is this light stands for 12V system or for HV system faults?




TonyWilliams wrote:
stradivaria wrote:
Hi, I have a problem with RAV4.
I have 12V battery signal all the time on (small read battery on the speedometer) I am not sure that it is for a 12v system malfunction.
I had some problems with the main battery (contactors was replaced) no faults in the Tesla system side, but light still lights on all the time.

Does anybody experience that light on? What does this light stand for?

Thank you!!!!


The DC to DC converter may have failed. Turn the car to READY (ON), and use a voltmeter to measure 14 volts (plus or minus 0.5 volts) on the 12 volt battery.

If you have 12.7 volts or less, the DC to DC has failed.


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 Post subject: Re: Battery light on!!!
PostPosted: Tue Dec 04, 2018 6:41 pm 
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Joined: Thu Jan 17, 2013 11:13 pm
Posts: 1752
Location: Los Altos, CA
stradivaria wrote:
It is charging, I have measured 14,3V in Ready modus.

Is this light stands for 12V system or for HV system faults?


Image

I think this should answer your question.

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 Post subject: Re: Battery light on!!!
PostPosted: Tue Dec 04, 2018 7:19 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 4035
Location: San Diego
Have you done a load test on the existing 12 V battery?

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Tony Williams
QC Charge
1780-104 La Costa Meadows Drive
San Marcos, California 92078 USA
tony@QCcharge.com
www.QCcharge.com
Twitter: QCPower
1-844-EV-PARTS
1-844-387-2787
1-760-798-0342 Office
Hours M-F, 9-5 Pacific Time


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 Post subject: Re: Battery light on!!!
PostPosted: Tue Dec 11, 2018 2:50 pm 
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Joined: Fri Nov 30, 2018 9:34 am
Posts: 5
Found the faults, fixed... The case is closed :)


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 Post subject: Re: Battery light on!!!
PostPosted: Tue Dec 11, 2018 7:26 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 4035
Location: San Diego
stradivaria wrote:
Found the faults, fixed... The case is closed :)


What was the issue?

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Tony Williams
QC Charge
1780-104 La Costa Meadows Drive
San Marcos, California 92078 USA
tony@QCcharge.com
www.QCcharge.com
Twitter: QCPower
1-844-EV-PARTS
1-844-387-2787
1-760-798-0342 Office
Hours M-F, 9-5 Pacific Time


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 Post subject: Re: Battery light on!!!
PostPosted: Thu Dec 13, 2018 6:07 pm 
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Joined: Wed Aug 13, 2014 8:30 pm
Posts: 268
Location: San Diego Co
stradivaria wrote:
Found the faults, fixed... The case is closed :)


Yes, it would sure be nice if you shared the details so that other's may learn from your experience. You were certainly eager to find help on this forum, so will you also share to help others that might encounter the same or a similar issue?

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 Post subject: Re: Battery light on!!!
PostPosted: Thu Mar 14, 2019 1:36 am 
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Joined: Sun Sep 03, 2017 3:46 pm
Posts: 32
Location: Ukraine
This is the result of the operation of the RAV4EV,
Image
which occasionally / occasionally turned on the fault indicator of a 12V battery (https://youtu.be/i3_7cYj0wXw)


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 Post subject: Re: Battery light on!!!
PostPosted: Sun Mar 17, 2019 10:55 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 4035
Location: San Diego
alflash wrote:
This is the result of the operation of the RAV4EV


We now modify all RAV4 (Tesla) motor assemblies with a drain hole for leaking coolant.

_________________
Tony Williams
QC Charge
1780-104 La Costa Meadows Drive
San Marcos, California 92078 USA
tony@QCcharge.com
www.QCcharge.com
Twitter: QCPower
1-844-EV-PARTS
1-844-387-2787
1-760-798-0342 Office
Hours M-F, 9-5 Pacific Time


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