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RAV4 Prime DC-DC converter recall
jazhanel
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My guess is very few. If you Google "RAV4 Prime fires" most of the relevant hits are for this recall, even back to this thread.
I looked briefly and it appears this particular part # cross references to some Lexus HV models. Whatever is going on may not have even been with the prime, we just got caught in the drama.
So I have an aftermarket AMP mounted under the spare tire in the trunk, which I t is powered by the 12V battery. Do you think they will refuse to work on my car if they saw it?
No. Unless it’s blocking panels they need to pull or something.
Can you elaborate? I thought this part is unique to the R4P and the NX450H+ and the non-plugged in hybrids had the DC/DC converter built into the inverter under the hood.
Lexus RX Hybrid Voltage Converter - G927042060 | Prestige Lexus, Ramsey NJ
Hybrid Voltage Converter. Lexus RX. Genuine Lexus Part - G927042060 (G9270-42060). Ships from Prestige Lexus, Ramsey NJ
parts.prestigelexus.com
Same part number. See what this fits section. Not just PHEV’s unless there is an RX PHEV?
Looks like it is in the new 2023 RX HV. Maybe they changed the design?
I googled Lexus hybrid fires, not many real hits either. Which begs the question how prevalent the issue is. Can't wait to see the doc release on NHTSA.
There were some speculations on it is related to battery heater pulling large amps from the DC/DC converter. This feature can be turned off in the MID. I wonder why Toyota is not recommending that until the part is replaced?
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This is for charging the traction battery. It has nothing to do with the DC-DC converter being recalled.
I think he's talking about disabling the battery heater on that screen, hypothesis being that it loads up the DC-DC converter and increases fire risk while parked / garaged and unattended.
Ah, okay, I guess that makes sense.
Thanx for sharing.
2021 Rav4 Prime XSE Pro Audio/Dynamic Nav/Weather Packages Build date: June 2021
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I wonder if one could use a temperature sensor on the DC-DC converter to alert you when temps go up:
This one only goes to 140F...
Amazon.com: tempi.fi Mini Bluetooth Temperature and Humidity Sensor - Developed in The USA - 24/7 Data Logger with Alarm – Direct to Phone - Short Range - No Cloud - Not Wi-Fi : Industrial & Scientific
Amazon.com: tempi.fi Mini Bluetooth Temperature and Humidity Sensor - Developed in The USA - 24/7 Data Logger with Alarm – Direct to Phone - Short Range - No Cloud - Not Wi-Fi : Industrial & Scientific
www.amazon.com
This one only goes to 140F...
I'm just musing here and by no means a EE. But I'm wondering if the sporadic reports of unexplained battery drain is related. The DC-DC failure pattern is the rectifier fails to a short circuit, and the 12v battery turns the converter into a mini space heater. So maybe in these cases the rectifier fails just a "little bit" and is pulling on the battery all the time, but not enough to melt down. Just a thought- not even sure if that's possible.
How about one of those oven temp probes?I wonder if one could use a temperature sensor on the DC-DC converter to alert you when temps go up:
Amazon.com: tempi.fi Mini Bluetooth Temperature and Humidity Sensor - Developed in The USA - 24/7 Data Logger with Alarm – Direct to Phone - Short Range - No Cloud - Not Wi-Fi : Industrial & Scientific
Amazon.com: tempi.fi Mini Bluetooth Temperature and Humidity Sensor - Developed in The USA - 24/7 Data Logger with Alarm – Direct to Phone - Short Range - No Cloud - Not Wi-Fi : Industrial & Scientificwww.amazon.com
This one only goes to 140F...
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"As of June 21, 2023 based on a diligent review of records, Toyota’s best engineering judgment is that there are four Toyota Field Technical Reports and two warranty claims that have been received from U.S. sources that relate or may relate to this condition and which were considered in the decision to submit this report."
Six total cases out of 43,442, or 0.0138% incident rate.
The converter retails for $700, so that is $30.4 million in parts alone, before paying labor and loaners.
Major expensive recall for a pretty low incident rate. I am glad they are taking this seriously though.
Six total cases out of 43,442, or 0.0138% incident rate.
The converter retails for $700, so that is $30.4 million in parts alone, before paying labor and loaners.
Major expensive recall for a pretty low incident rate. I am glad they are taking this seriously though.
Thanks for this. Good read.
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