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Lexus RX 400h Transmission Questions
Discuss transmission issues with your RX 400h here.
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My thoughts as to what is happening at 40 is that the control unit is switching between using the front electric motor to help drive the SUV and using it to charge the battery. Again, look at your Energy screen and around 40 there seems to be a lot of switching between those two modes. I am not a mechanic; but it makes sense that if the motor is helping to move the SUV and in a second it shifts to charging the battery and not helping with powering the SUV, that this could result in a slight shudder.
However, some people have reported a more sever shudder at 40. If yours is more sever, you should check out the other threads that discuss that problem.
However, I noticed that the engine "races" disproportionate to the speed increase when pressing the pedal even semi-aggressively. It is though the CVT is slipping. I drove another RX400h recently that does the same thing, but a lot less. My dealer tells me that my car is within specifications. I would like to hear others' experiences, please. Thanks