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Sedans Toyota Avalon Toyota Avalon 2005+ Transmission Questions
374 messages, Last post on Apr 21, 2009 at 6:25 AM
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After reading about the TSB for 05 Avy's I took mine in to be looked and and they ordered the parts, which only took a week. I made my service appointment (it's a 4 hour job) and had the wok completed while at work. I had noticed only a limited low speed acceleration slip, and not all the time, but I did notice it once in a while. What I was really hoping for was a fix for the way the laser cruise control accelerated after a slow down and then subsequent speed up. It really slammed you in you seat because it seemed to want to get back to speed instantly. In heavy highway traffic it was a pain. I am very pleased with the fix. (I saw the order for the parts over $1300.00 and then 4 hours of labor so Toyota is making a real commitment to fixing this.) I have taken my car on the highway and the laser cruise now works like a dream, acceleration is smooth as silk. I've also noticed the overall shifting is so smooth now I actually had to look to the Tach to tell when the shift points are, it was always smooth and quiet but now there is virtually no perceptible change when shifts occur except the tach change. I would recommend the fix for anyone that feels they have the hesitation and/or the laser cruise control dragster type acceleration. I spoke with the technician that did the repair and he said it was the 2nd one he had done (he is the shop expert and is the only one doing this fix right now) and it is fairly straight forward and other than time consuming not difficult, so it is not something a good service department should have trouble with. I mentioned that I had read other folks have gone onto their dealers and all they do is flash the ECU and he shook his head and said that will only result in worse problems on the 05 since the manifold with the old Oxygen sensors will not give the new program the correct readings and will cause worse shifting.
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Replying to: allavalons (Aug 02, 2007 5:08 am)
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Replying to: user777 (Aug 02, 2007 7:08 am) A link to the TSB and answers all your questions on parts, etc. 
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For future reference, you can search NHTSA's office of defect investigations for complaints, recalls, and TSB's. http://www-odi.nhtsa.dot.gov/cars/problems/recalls/" I am considering getting a 2007 Avalon and came across a number of complaints and the TSB (not much of a description, but enough to know what it was) without finding this discussion first. If you do have serious problems, please report them to the Office of Defect Investigations. I have no doubt that the complaints to NHTSA pressured Toyota into issuing the fix. BTW, is there a discussion group about the Avalon headlights? Saw a few complaints about them. Similar to the Azera complaints.">link title
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Replying to: bigmike2 (Aug 07, 2007 8:57 pm) |
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2005 av with 24,000miles. Had no big transmission problems other than slow speed slight hesitation. Took it in today in Orland Park Illinois. Service department wasn't aware TSB, but agreed it would be done. Parts come in this week and will fix soon as I bring it it. No hassles, no argument. Great working with this dealer. Going East in a couple of weeks. I will get back with results.
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| Went East before the parts came in on my 2005 Avalon. When I got back had it done and everything is smoother. Slow speed hesitation is 99% gone. Much better on rolling stops. Transmission seems to get to 1st. gear better on a rolling start. Have about 200 miles since having it done. It does make a difference. Orland Park Il. dealer was great. Even told me I needed the steering column one done also!! They said it was clicking, but neither my wife nor I could hear it. | |
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Replying to: ski1003 (Jul 09, 2007 3:54 pm) |
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Replying to: avvy05 (Apr 22, 2008 3:42 pm)
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Replying to: avvy05 (Apr 22, 2008 3:42 pm) ENGINE EG033-07 Title: ECM CALIBRATION: ENHANCEMENT TO SHIFTING PERFORMANCE & SMOOTHNESS Models: '05 Avalon June 20, 2007 Introduction To enhance shifting performance and smoothness during acceleration, the Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) calibration has been revised and certain fuel control feedback components have been updated. Please use the following procedure to address customer concerns. NOTE :Before proceeding, verify the ECM (PCM) calibration has NOT been updated by checking for the Authorized Modifications Label (shown in Figure 11 of the Repair Procedure). Applicable Vehicles ^ 2005 model year Avalon vehicles.
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