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2010 Lexus IS250 Transmission Control Issue


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Hi all,

 

I have a 2010 Lexus IS 250, and I recently had an issue whereby I had stopped at the traffic lights, and when I went to accelerate to take off the engine was reving its guts out. I looked down at the my speedo and I saw the car was in auto D mode, but there was number '1' showing where it shows what gear it's in - meaning the car somehow thought it was in manual mode in first gear??? After I discovered this I flicked between D and S a couple of times and the car went back to Automatic mode as it should and the car drove as per normal again. I'm not sure what control system component can cause this issue whereby it thinks it's in manual mode when it's in fact in automatic mode?

 

Also while I'm at it, every now and then I have the battery light flash up while I'm driving. I had the nearly new battery tested by Lexus, and it all passed, so I assume the only other issue can be related to the alternator, connections to the alternator, or the wiring from the alternator. Has anyone else faced any other issues which may cause this?

 

The car has only done just over 50,000km, and everything else is really great. 

 

Any assistance would be great - thank you all!!!

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