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ECU rebuilding - any recommendations?


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I have some strange shifting issues in my SC transmission and it seems that ATF level is fine, solenoids etc are not throwing codes.

Reading US forums it seems there does seem to be an issue with the transmission ECU of the 6 speed sometimes, with symptoms similar to mine and there's a couple of places over there that understand this issue and rebuild them.

Does anyone know anywhere good in the UK that could do the same?

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Hmmm Lexus Edgware Road know an awful lot about this having done a brain transplant on my IS250. It took a great deal of conferring with head office in Japan. Also needless to say the application of a heap of cash.

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I would first change the oil filter and the transmission fluid, using original parts. Make sure the transmission fluid level is correct when hot. The transmission fluid and filter are subject to a maintenance schedule which must be adhered to.

If the problem persists, log into LexusTech.eu and enter your VIN number and you can find out if there are any technical service bulettins relating to your problem.

In such a case there should be a remedial action and possibly an ecu softwear update to cure the problem.

Chris.

 

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3 hours ago, Mihanicos said:

I would first change the oil filter and the transmission fluid, using original parts. Make sure the transmission fluid level is correct when hot. The transmission fluid and filter are subject to a maintenance schedule which must be adhered to.

If the problem persists, log into LexusTech.eu and enter your VIN number and you can find out if there are any technical service bulettins relating to your problem.

In such a case there should be a remedial action and possibly an ecu softwear update to cure the problem.

Chris.

 

Thanks Chris. Yes, fluid and filter changed with genuine T-IV fluid. Sadly there is no maintenance schedule for it, it's a 'sealed for life' job. Which never sounds good to me. 

Its a 06 with 78k on the clock. A transmission failure is unheard of but this transmission ECU problem is not, sadly. I don't really want to send my ECU off to Illinois if possible

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It may be worth giving this place a call, I went for a job interview there many years ago so saw the set up. Didn’t get the job but would have refused as the money was an insult.

https://www.ecutesting.com/?gclid=EAIaIQobChMIr4Xmx7348AIVBsPVCh26LQqiEAAYASAAEgIeZ_D_BwE

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