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GS450H Hybrid problem (Trans?)

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Hi

I've written in two forums and still can't get a answer for my problem. 

I have a 2006 GS450H. There were 12 Battery elements changed and the hybrid worked fine, no errors. One day I put the car on stress, braked and drove it like a crazy man. 

Now the car has been sitting for about 1 month and I still can't get it to work properly. When I press the POWER button, the READY light flashes and then starts the gasoline motor and in about 4-5 seconds the READY light is lit. The car works just fine when it is cold but when it gets hot and I put it on REVERSE, it dies on me and throws me "CHECK HYBRID SYSTEM" "CHECK VSC" and so on. 

I bought Techstream and I get P0867 (Transmission Fluid Pressure) and P0868 (Transmission Fluid Pressure Low). I found a bulletin that changing the transmission oil pressure sensors would cure this. I bought PB1, PB2 and PB3 sensors and changed them, even put a new filter in it with new oil. The problem is still there. 

Would the auxiliary oil pump be the culprit of this problem?

I'm really unpleased right now!

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Hi

There is a common problem on these whereby the bearing on the pumps fail - this can be a very cheap fix if you are good with spanners

There is a write up here by a member:

https://carlthomas66.blogspot.com/2016/03/lexus-gs450h-transmission-oil-pump.html

hope this helps

 

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also a topic here:

 

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Thanks, I found these threads by search and from Google. That's how I'm here 🙂

I think I'll get the pump off today, made preparations for removing yesterday. Just 3 days ago I changed the ATF and the oil pressure sensors....God dammit.

If anyone would like to see how to change the sensors or where they are, I made pictures and can make a DIY.

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What mileage is your car at out of interest?

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Hi

I think my car has above 350 000 KM.  Would the pump still be the problem if it passes the Techstream test?

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I really bought myself a bad car. 

 

The black cover was somewhat bent from one hole side and it really was and still is rusty as you can see in the pictures. 

 

I got it open and it's no good. Oxidation has broken and damaged it. As you can see, the piece where the PCB lies, there should be a inner circle that goes into the black housing. 50% of that side is inside the black housing and the other on the PCB one. Everything has oxidated. I think that someone has opened it sometime and didn't put it nicely together. The middle spinning thing wasn't straight in.

 

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Managed to brake on plug also. Can someone make me a picture how the plug is wired in? 

 

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