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Bob
Thanks
Suave Tequila
Limited
RH 48510-09G60
LH 48520-09D40
Touring
RH 48510-09G70
LH 48520-09D50
Maybe someone else can find out about the rear and get some info? You can order these through Toyota. You are at least half way there towards a little firmer ride with this info...good luck.
Also again I'll say my '06 XLS is running perfectly. No rattles weird shifting or what ever.
In my opinion, the standard suspension '06 is not as good as the KYB setup on my '03 but much better than the origanl on the '03.
If the '06 struts hold up better or at least until the Tokico/KYB's become available, I should be OK with it.
The Gas replacements likely won't appear until '07 at the earliest when wear and tear on the '05s creates enough demand.
Gerry
NWBLIZZARD
Drivers who press on the bottom of the pedal with the tip of the shoe are also using the full length of their foot as lever arm, instead of 6" when the foot is nearly vertical. So there are two factors that when combined, greatly reduce the amount of control over the gas pedal.
havalongavalon
Gerry100 was responding to my earlier post about upgrading my XLS suspension w/aftermarket shocks/struts. What nobody has been able to tell me definitively, including Toyota mechanics, is whether or not the Touring shocks/struts are a simple bolt-in swap with those of the XLS. You'd think it would be a simple swap but nobody can confirm or deny. The info you've provided is a good start though. Thanks!!
Regards,
Deanie
And what brand Bluetooth?
NWBLIZZARD
That makes since. Even though the one of the above posting states KYB makes the front struts for the new Avalon, it does not mean that there premium aftermarket product is necessary in the limited, although I am sure it is better than the stock 00-05 that we originally purchased. I am sure your new ones will hold up better than the older ones.
With 80K on my 02 now, the TokicoHP's have softened just a little, but any strut wears with mileage. If you do change to aftermarkets on your 06, I would try and stay away from high pressure, mono tube gas shocks for the Avalon. While they are the best handling shock,... for a daily driver, the ride quality usually is compromised much and they sometimes change the ride height of the vehicle. The KYB and Tokico's seem to be a very nice compromise for many.
Enjoy your new Avalon. Let me know what you do to it as the years progress. Always interested.
abfisch
Usually, I say usually, the shocks are made for Toyota by a subcontracting company(s). See my previous notes on aftermarket struts. If you are not thrilled with the struts in your XLS, and desire a bit more performance/stability without going crazy, I would WAIT, until KYB or Tokico, two reputable manufacturers come out with aftermarket replacements, which they will. The part number will probably be the same as the new Camry and mid-model Lexus. Toyota does not like make more parts than needed if you will. As I have said before, if you don't plan to "track" the car, which most Avalon owners do not, then stick to a premium LOW pressure, not high pressure twin tube gas shock replacement.
I am not sure if the touring suspension comes with different size wheel/tire combo's but I think it does. There are smaller other changes you can make, such as sway bar bushings but they are not available yet either. Check on Energy Supsensions website later in the year to see if PU bushings are available. That will also make the car corner better albeit at the sacrifice of transmitting more vibration in the cabin.
abfisch
Thanks for the help. I wasn't planning on replacing my 05 XLS struts this year, but after getting some use for the factory ones, I might switch to some slightly better-handling struts and maybe bushings as well (at the expense of a little more harshness/vibration). The 05+ Touring wheels and tires are exactly the same size as its siblings and are interchangeable with all 05+ XLS and Limited models. I wish somebody knew whether or not the struts were as well. Thanks again for your help, and I will chech Energy Suspensions later this year.
Regards,
Deanie
I don't know how many Avalon 'toe drivers' there are, or how many of them may have "hesitation-like" issues but we heard from at least one, avalonbad, diagnosed to be a 'toe driver' who described his Avalon behavior as follows (with my bolding added) and cured his problem by adjusting his foot angle:
#11387 2006 avalon quirk by avalonbad Feb 13, 2006
"The styling, finish, comfort, ride and handling on this car are superb, but a temperamental and persnickety accelerator pedal can make driving this machine an extremely unpleasant experience. I didn't a have a clue what was causing my problem. when the engine was cold and especially if the temprature was cold, acceleration and transmission shifting was effrotless and smooth as glass, but after driving several miles and the car warms up and (in a sporatic fashion) depressing the pedal would cause migrane inducing hesitation. The engine would over rev to 6k RPMs and floored would not reach 45 MPH. I thought it was the computer but turns out it was not that after all. After a several month long harangue Toyota sent a Field Technical Specialist to test drive with me, He was able to duplicate the problem from observing the angle of my foot while driving. This started me on a quest to figure out what was causing the problem. I discoverd that the vinyl pedal has tip at the bottom that would become flexible after it warms up, as a toe driver my foot woud touch the tip at times and send the drive by wire into a frenzy. I tested this on two other vehicles with the exact same issue. Seems a $20 peice of plastic was causing all this unpleasness. I adjusted my foot to place the greatest pressure high on the pedal and the problem went away."
The key message is, avalonbad's shallow foot angle caused the erratic behavior and he cured it by placing the foot more nearly vertical.
To follow up on avalonbad's theory I had another look at my XLS gas pedal, Feb 2005 edition. I didn't see how the bottom of the pedal could get "soft" in hot weather. Perhaps more likely, a shoe sole could get soft and cause the shoe to slip.
NWBLIZZARD, if you go ahead with your "free body diagram" analysis, please test the following explanation for the curvature of the top half of the gas pedal. I believe it is meant to provide a tangent contact surface suitable for foot sizes ranging from medium to large. This way, a larger foot can be placed at a shallower angle and still contact the pedal squarely, closer to the top of the pedal and the required pressure will about the same as for the more vertically placed foot, because as the contact point moves up on the pedal, the pedal torque arm is progressively reduced by about the same amount as the foot torque arm is increased.
A remaining question now: what would be the purpose of continuing the convex curvature toward the bottom half of the pedal? I see no similar useful purpose for this and I agree that it could be potentially dangerous, as captain2 said, if your toe is more likely to slip off the pedal altogether.
It is disturbing to think that something as simple as foot placement may be a root cause for "hesitation-like" performance problems that have bothered certainly a fair number of Avalon drivers.
I'd like to ask Avalon owners who have had hesitation problems, to check your foot angle and placement on the gas pedal and report back to us, so that we can have a sense for how systematic this particular problem may be.
As well, if you know that you are a habitual 'toe driver' but you have not experienced hesitation issues, this will be useful to tabulate, too.
This will be a long post and many may not read it to the end, so I'll ask these questions separately, as well.
Thanks!
havalongavalon
To participate in this poll of Avalon drivers, please first check your normal foot angle and the place where your shoe contacts the gas pedal, and then reply to this forum, leaving only the statements that describe you most closely:
1. I frequently or fairly occasionally experience engine or transmission hesitation problems when I step on the gas in stop-and-go traffic. TRUE FALSE
2. I hold my right foot close to vertical with the heel resting close to the gas pedal and my foot makes contact about half-way up the pedal. TRUE FALSE
3. I hold my right foot at a really shallow angle and I contact the bottom of the gas pedal with the tip of my shoe. TRUE FALSE
4. I hold my right foot at a fairly shallow angle and I press near the top of the pedal with the tip of my shoe. TRUE FALSE
5 (Optional) My shoe size is SMALL MEDIUM LARGE EXTRA-LARGE
Thank you!
havalongavalon
Any TSB re the navigation unit? My unit switched map direction and to metric read out. It took me 10 minutes to find out how to correct these unwanted changes. The manual needs help;it is not user friendly and has no Index.
Thanks for the TSB info. ange1
1. TRUE
2. FALSE
3. TRUE
4. FALSE
5. SMALL
I noticed that comments were made re toe driving on the gas pedal and so of course the next time I drove my car I watched where I placed my foot. I found that I am one of those people who do not place my foot totally on the pedal. I guess you could call me a 'toe driver'. So for a while I conscientiously put my entire foot on the pedal as one of the posters described and guess what?! no more hesitation problems. I don't know if it was a coincidence or what but the problem has been solved here.
I do have a couple of rattles. The dealership fixed the rear parcel shelf rattle no problem. Apparently the creak on the driver side window is a little bit more difficult to fix. They are ordering a part from the U.S. and apparently that is going to fix it. The so called rattle expert says he can make the rattle happen and traced it, so we will see if that fixes the problem.
Despite these minor problems I love this car and would recommend it to anyone. The smoothness of ride and quick response when needed are very much appreciated. Road handling is unequaled with any car I have driven so far.
MelBC
Thank you for your helpful input and for this confirmation. I should have also made reference to your earlier post where you shared with us your insight into this solution:
#11643 Re: 2005 Toyota Avalon - Hesitation & Lousy Shifting [tome1] by sofl06avalon Mar 17, 2006 (8:21 pm)
havalongavalon
Thank you for sharing this great news! Really glad to hear that this has worked for your wife.
Say, I had always wondered about the reason behind your chosen nickname. In view of this, are you considering changing it now to something like
me_&_the_wife ?
take care,
havalongavalon
Thank you for your contribution, this again is helpful data.
With respect to sending this info to Lexus drivers or other parties, I'm hoping that more Avalon drivers will be taking some time this weekend to check on this question and post their findings, in order to feel as confident as possible about this observation.
Regards,
havalongavalon
I'll add your reply to the poll results.
havalongavalon
2. I hold my right foot close to vertical with the heel resting close to the gas pedal and my foot makes contact about half-way up the pedal. FALSE
3. I hold my right foot at a really shallow angle and I contact the bottom of the gas pedal with the tip of my shoe. FALSE
4. I hold my right foot at a fairly shallow angle and I press near the top of the pedal with the tip of my shoe. TRUE
5 (Optional) My shoe size is SMALL
Survey Data:
1. False
2. False
3. False
4. True
5. Size 10
The toes can rotate independently from foot or they can be held stiff and rotate the whole foot about the ankle or we can have combinations of both toe and ankle rotation!
And we thought this wasn't complicated!
NWBLIZZARD
NWBLIZZARD
I don't expect to see the '06 before late May,early June.
(16 weeks after ordering thru the leasing company.
Out of the box, the '06 suspension is less than optimum for me, but I won't be able to justify probably even buy replacements until '07 sometime. I just hope the OE shocks don't deteriorate like the '03's did.
I'll post on this board.
Gerry
If reducing the pulse or jerky movement of the gas pedal will actually smoothe the transmission shifting in a DBW car, maybe one of the electrical (my weak subject) experts here can explain how this happens. Voltage change? Algorithm recalculation? What is it? And why does Toyota allow this to happen?
My only complaint about the current generation Avalon, and the reason I might not buy one, is that the car is longer than my '03 XL but the trunk is smaller. Somehow. Other than that, it's a great car...
Thanks for sharing your insight.
Is there an option to have the doors unlock when the key is taken out, and not when the drivetrain is put into park mode?
While driving I am finding the rpms are too high between shifting as if the clutches are slipping. This shows up at slightly fast driving. At slow or normal driving the rpms appear to respond without over reving. ange1
Maybe not so much. Try driving smoothly with your toes on the bottom of the accelerator, as opposed to the more 'normal' way with your foot positioned below the pedal pressing it with the ball of your foot halfway up or so. A definite difference, the toe driving causing an 'all on/all off' reaction that is aggravated by the engine's reponsiveness, and certainly 'hardening' the tranny's shift points in the process. Actually would think that this problem would exist for all cars, but especially those with decent power cobined with this now fashionable DBW crappola!
Dave
NWBLIZZARD
Obviously "toe-driving" would be more likely to result in some level of dithering of the acelerator pedal position sensor output.
Assuming the truth of this matter it could likely be corrected by increasing the sampling rate and then "averaging" the sensor output signal level over time.
Sort of like adding a "virtual" shock absorber, motion dampening effect, to the accelerator pedal travel.
I decided that the Avalon offered the best combination of things that I was looking for...comfort, power, at least some agility, space, good tunes, reliability, etc. I traded in my BMW 330i (it just isn't a good family car when you have a young kid and a second kid on the way). Anyway, I think one way to describe the BMW is that it is fun to drive. But, that is a general descriptor. More specifically for my situation, I would say that its fun to drive on occasion. There are a lot of straight roads in Florida and I rarely had the opportunity to take advantage of BMW's superior trait...agility. Sure, it was fun to whip around a few hard turns that I came across. But, for the most part, I drive on fairly straight roads...or roads with moderate turns. If I lived in a different part of the country, I'd probably be a little more upset that I had to give up BMW's agility. Having given the Avalon a pretty good ride over the weekend (not to mention the 4 test drives I took), I think its best described as a car that is nice to ride in (whether as driver or passenger). And, with mostly straight roads, this is a better trait than pure agility. And, the touring trim doesn't lack for handling/agility. It had no problem handling moderate turns at speed. I noticed that the Touring's tires are rated A-A. I didn't take a look at the tires on the other trims, but I'm guessing they are rated A-B.
Anyway, I think I'm really going to enjoy this car....even if I experience a rattle here and there.
And this one is not truly "open loop", the primary feedback is provided via the driver's seat-of-the-pants sensor.
And look at all the "features" that have been added to that "seat-of-the-pants" servo control loop in just the last few years.
ABS
Traction Control
VSC
Snow mode...A)variable gain on the DBW, e-throttle system. B)modified shift logic and/or 2nd gear start-off.
AGL: Aggressive shifting logic.
And now with the advent of a market viable EPS, Electric Power Stearing, The actual "gain" of Toyota's EPS servo loop is being changed on the fly as a function of actual conditions or "predictive" pre-conditioning such as with "impending" rollover.
(Some newer Toyota models, those equipped with VSGR, Variable Stearing Gear Ratio, will actually counter-stear against the driver's stearing inputs if VSC conditions warrant.)
For instance with EPS if you are accelerating rapidly, HARD, the EPS system will reduce the level of power stearing assistance it provides. It will also reduce the level of power assistance it will provide if you try to turn the stearing wheel in a direction that would result in exacerbating a stability situation that the VSC is currently trying to correct.
Most of us now know that with ABS if the brake pedal starts vibrating then the road surface is too slippery for the rate at which we're trying to slow or stop the vehicle. Do you also know that this "feedback" as ergonomic as it might be, was completely and totally unintentional? Automotive engineers spent a great amount of time and effort trying to "combat" this effect until someone came to realize that it was actually an asset.
Ivory soap, "it floats"...
Now if the ergonomic design engineers on Toyota's payroll would just add something of that nature to the accelerator pedal and the stearing wheel I would be happy.
Adding a "forcing" servomotor to the accelerator pedal would both allow the pedal idle position to be calibrated more accurately and could provide a vibration on that pedal when its throttle control position is being over-ridden by some "downstream" function, say VSC, traction control, or even ABS.
The servomotor could be used to "drive" the accelerator pedal into the idle position as you apply the brakes in order to shift from park. The servomotor need not be very powerful. If it cannot easily drive the accelerator pedal into the idle position at this specific time then there is clearly a malfunction, possibly human related. In any case a diagnostic light could illuminate and the engine run in "limp home" mode until the fault is corrected.
If human related, all one need do is restart the engine and then remove the "obstacle" from the accelerator pedal during the "shift from park" procedure.
Rather than just have the EPS reduce the level of power assistance I would have the stearing wheel vibrate rapidly, but ever so slightly, unforceful/slow travel in the direction desirable to alleviate the circumstance but forceful/rapid travel otherwise.
So now, today, we have automotive hardware design engineers pointing fingers at their firmware counterparts, and ergonomic engineers trying to get a word in edgewise.
Personally I would vote for a (LOUD!) buzzer and diagnostic light if the brakes were applied while the accelerator pedal is depressed beyond the idle position.
Good luck...!!