Question about 2007 Lexus ES 350

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Hesitation in Transmission Shift

Since new my 2007 ES350 ALWAYS hesitates on the shift from about 20 MPH when cold. After that it seems to run just fine. The dealer re-programmed the transmission when the car had under 1,000 miles on it, but it made no difference. I complained about it lat time I had the car in for service at about 16,000 miles. They "could not replicate" the problem. Too bad, when the rest of the car is about as nice as one could ask for. Everything else works as it should with no drama - unlike the BMW 550i I had before it. Talk about not ready for prime time!

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The ES built form May to August 2006 had a faulty valve in the transmission. Lexus voluntarily replaced over 700 transmissions as good will while seeking out the problem.
Once discovered the valve was replaced in production beginning August 2007. Your production date is on the drivers door pillar. Later models were fine however some transmissions have been reprogrammed to adjust for a shift issue. My Sienna , lags and then shifts late and hard sometimes upon acceleration from a stop. Similar transmission, same fix is available. Remember that a problem they can't replicate is always tough to fix, but if this sounds like the same shift problem, ask then to keep the car overnight, you'll get a loaner and they can try it cold. The transmission can be reprogrammed again... Lexus can and will help../.It is in their MOTTO,``we can, we will..."The relentless persuit of perfection.
Post back with an update and your production date

Posted on Nov 09, 2009

  • Chemist1961 Nov 09, 2009

    The ES built form May to August 2006 had a faulty valve in the transmission. Lexus voluntarily replaced over 700 transmissions as good will while seeking out the problem.
    Once discovered the valve was replaced in production beginning August 2007. Your production date is on the drivers door pillar. Later models were fine however some transmissions have been reprogrammed to adjust for a shift issue. My Sienna , lags and then shifts late and hard sometimes upon acceleration from a stop. Similar transmission, same fix is available. Remember that a problem they can't replicate is always tough to fix, but if this sounds like the same shift problem, ask then to keep the car overnight, you'll get a loaner and they can try it cold. The transmission can be reprogrammed again... Lexus can and will help../.It is in their MOTTO,``we can, we will..."The relentless persuit of perfection.
    Post back with an update and your production date

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Vehicles equipped with engine or transmission computers may require a relearn procedure after the vehicle battery is disconnected. Many vehicle computers memorize and store vehicle operation patterns for optimum driveability and performance. When the vehicle battery is disconnected, this memory is lost. The computer will use default data until new data from each key start is stored. As the computer memorizes vehicle operation for each new key start, driveability is restored. Vehicle computers may memorize vehicles operation patterns for 40 or more key starts. Customers often complain of driveability problems during the relearn stage because the vehicle acts differently then before being serviced. Depending on the type of vehicle and how it is equipped, the following complaints (driveability problems) may exist:

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Vehicle Preparation

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Computer Relearn Procedures

Idle Relearn Procedure

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