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 Post subject: Replace battery coolant
PostPosted: Wed Oct 04, 2017 12:09 am 
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Joined: Wed May 07, 2014 7:51 pm
Posts: 16
I searched quite a while but did not find if anyone posted on Replace battery coolant at 40K a DIY guide, if you need the "XG-1987 Mini VCI Car OBD Diagnostic Scanner OBD2 USB Interface Scan Tool for TOYOTA TIS Techstream Diagnostic Cable & Software" product to do so, can anyone chime in on what is required? I just can't see paying 600 to 800 to change out some fluids.

Thanks.


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 Post subject: Re: Replace battery coolant
PostPosted: Fri Oct 13, 2017 1:50 am 
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Joined: Sun Sep 27, 2015 11:26 pm
Posts: 217
I looked into this a while back and the information on it all is very slim. I believe the flushing/reflling procedure is pretty standard however, there appears to be some sort of electrically powered valve within the battery pack that must be opened through the obd port in order to fully flush the system of the coolant.

The actual information and procedure for that is not out there as far as I searched. Of course it is available if you pay toyota for online access to the rav4 ev digital manual since they are not releasing any sort of paper manual for our car :(.

So all in all yes you need the tool to open that valve inside the battery bank to fully empty/flush the system of the coolant.

I was in an accident and the system was flushed for me while the car was in the shop so I don't have to worry about it anymore. My car had about 40k miles at the time. now its at about 44k. 2nd owner.

I'd think that tony williams might have more info on it since I believe he has accessed the manulal online @ toyota website. Though I have never seen tony speak of any specific details on the work so he might actually not know/never looked into that specific part of the work.

sorry!


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 Post subject: Re: Replace battery coolant
PostPosted: Sat Oct 14, 2017 11:48 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3889
Location: San Diego
I've never flushed the coolant. I've advocated getting the correct "PH paper" to test your coolant, which prevents unneeded and wasteful flushing and replacement:

http://www.run-rite.com/pro/products/co ... trips.html


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 Post subject: Re: Replace battery coolant
PostPosted: Sun Oct 15, 2017 12:40 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 535
Considering the relatively low temperature I keep thinking it should be good for a decade.


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 Post subject: Re: Replace battery coolant
PostPosted: Sun Oct 15, 2017 12:48 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3889
Location: San Diego
smkettner wrote:
Considering the relatively low temperature I keep thinking it should be good for a decade.


You are battling corrosion... which is why you need to test the coolant at least once a year (after the first 3-5 years).


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 Post subject: Re: Replace battery coolant
PostPosted: Fri Jan 19, 2018 12:49 am 
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Joined: Fri Jan 19, 2018 12:48 am
Posts: 1
Curious if you ever figured out how to change this yourself? I have a RAV4 exported from the country I am going to have to do this myself soon.


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 Post subject: Re: Replace battery coolant
PostPosted: Thu Feb 08, 2018 8:59 pm 
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Joined: Sun Sep 27, 2015 11:26 pm
Posts: 217
I wish someone would do a DIY vid on how to do this plus the tool :). I got mine changed after an accident, not my fault, and it saved me some good money. I got lucky I guess! Iw as very close to 40k miles


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