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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Re: Hesitation in Transmission Shift
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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Hello, You may just need to have fresh fluid and have the internal filter cleaned or replaced. There can also be a problem with the Cold start sequence for the engine. The Cold start sequence keeps the engine idle higher for a short time like the old choke system.
If your idle is slower when cold, it will take longer for the fluid to move to where it needs to be. The hesitation and hard shift can be the fluid trying to flow when it is thick. Yet the hesitation is also the thing carbureted engines would do when the choke was not working.
The other thing you can do is have the Electronics analyzed to see if the shift solenoids in the transmission are working properly, but this will take a Dealer or better transmission shop to have the tools and do the testing. Your cheapest route is fresh fluid and a clean filter and go from there.
Yes I think you are. Try Firestone or Midas. Firestone changes out ALL of the fluid and not just 25%. 167K miles may be a lot to some people but it is not to a car taken good care of. Remember Cadillac is top of the line for USA vehicles and has higher tolerances.
there will be codes stored so the scanner in use has not got the right protocols to read the ECM
Nissan products have to be set using a screw in the ECM to get to read the codes
you have to be specific with make , model , year , type of equipment to get closer
Try changing the transmission fluid and transmission fluid filter. It is a fairly easy but kind of messy job. Just buy the new fluid and filter, Grab your metric socket set and go at it. NEVER WORK UNDERNEATH A HOT VEHICLE. You have to pull the transmission pan to do this job. When you break the gasket seal several quarts (liters) of transmission fluid will cascade down on you. Be ready for it. Don't forget that when it stops draining there is still a lot of fluid left in the pan. When you finish cleaning up the fluid clean the gunk out of the pan. Install the new filter and reinstall the pan with a new gasket. Do not over torque the pan or filter bolts. If you strip them out or break them off you will need professional help to repair it. Refill the transmission with fluid. It should take six or seven liters.
Try this relearn procedure hopefully it will help 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:
Harsh Or Poor Shift Quality Rough Or Unstable Idle Hesitation Or Stumble Rich Or Lean Running Poor Fuel Mileage
These symptoms and complaints should disappear after a number of drive cycles have been memorized. To reduce the possibility of complaints, after any service which requires battery power to be disconnected, vehicle should be road tested.
Ensure all components are connected. Ensure transmission fluid level is correct. Warm engine to normal operating temperature. If vehicle has been repaired, perform KOEO and Continuous Memory Code Self-Test and ensure fault codes are not present.
Computer Relearn Procedures
Idle Relearn Procedure
Place automatic transmission in Park or manual transmission in Neutral position. Ensure the emergency brake has been set and all accessories are turned off. Start engine and bring to normal operating temperature. Allow manual transmission vehicle to idle in Neutral for one minute. Allow automatic transmission to idle in Neutral for one minute and then to idle in Drive for one minute. Once initial relearn is complete, process will be completed during normal driving. Always complete the procedure before returning the vehicle to the customer.
Drive Cycle Test (AOD-E, AXOD & AXOD-E TRANSAXLES)
With transmission gear selector in Overdrive, moderately accelerate vehicle to 50 MPH for a minimum of 15 seconds. Transmission should be in 4th gear. While holding speed steady, lightly apply and release brake for about 5 seconds. Stop and park vehicle for a minimum of 20 seconds with transmission gear selector in Drive. Repeat procedure 5 times. Always complete the procedure before returning the vehicle to the customer.
Drive Cycle Test (E4OD)
With transmission gear selector in Drive, press Overdrive Cancel Switch (LED should light). Moderately accelerate vehicle to 40 MPH for a minimum of 15 seconds (30 seconds above 4000-ft. elevation) Transmission should be in 3rd gear. While holding speed steady, press Overdrive Cancel Switch (LED should go off) and accelerate from 40 MPH to 50 MPH. Transmission should shift from 3rd gear to 4th gear. Hold speed steady for 15 seconds. While holding speed steady, lightly apply and release brakes enough to turn brake lights on. Maintain 50 MPH for about 5 seconds. Stop vehicle for a minimum of 20 seconds with transmission gear selector in Drive. Repeat procedure 5 times. Always complete the procedure before returning the vehicle to the customer.