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That thought arose as a result of thinking, in detail, of the issue of octane having a positive effect. Higher octane having a positive effect made absolutely no sense to me initially.
this is confirmed not only by my own experience but also in Toyota's own TSBs for both the 5 and 6 speed. About a year ago on an Avalon site thread, this even went as far as a 'survey' of owners with and without the 'problem' and exactly how they pressed the accelerator, and even physical modification of the throttle position relative to its sensor. If you don't already, concentrate on a foot position with the ball of your foot about 2/3 up the pedal and keep even pressure on the pedal.
I don't want to discount reports of extreme situations some say they have experienced, but your (and other's) theory could confirm that answers to people's experiences may, in part, have something to do throttle application technique.
It could mean that what some are saying about DBW systems, ie they require getting used to because they are different, may be one reason for this phenomenon.
I haven't experienced any of the anomalies, nor have others. Their apparent randomness, and that only a few are reporting problems, might add credence to the theory that human factors may be involved to some extent.
Like many others, yourself included, I'm just speculating.
First of all the direct answer to that is:
Of course..!
Unless you've taught your dog to drive you to and from work each day.
The real problem is that with respect to this newly defined/discovered charactoristic (assuming truth of the theory), gas pedal "rate of application", human ergonomics appear to operate inverse to the expectations of automotive design engineers.
The purely human side of this equation is quite simple. In an airplane when you decide it is time "go around", "do over", one of the things high on the execution list is quick and firm re-application of engine power. Not "slow and soft" re-application, which would clearly be counter-intuitive to the circumstance.
Yes, the same urgency doesn't really often exist in an automotive environment, but the raw fact is that it sometimes does, and it has now become quite clear that the human factor, the natural human instinct to move quickly and decisively in seemingly life threatening situations, will randomly result in an adverse circumstance to the driver's desires.
And yes, you can raise the argument that these aren't really life threatening situations, yet again, but you can't tell me you haven't had times of this nature wherein your heart ended up in your throat, as all of us with any reasonable level of driving experince have.
The simple fix would be to replace the gas pedal return spring with a "forcing" torque type servomotor and program it to provide a more extreme level of force against initial depression when foot pressure is (re)applied immediately or shortly after a lift-throttle upshift event.
But again, why not just modify the firmware so that DBW allows the engine to quickly respond, to at least a minimal level, to gas pedal pressure in this instance? Do these events happen often enough that the resulting brief period of clutch slippage in the higher gear would be so detrimental as to result in premature transaxle failures?
A complete puzzle.
I tried, but he's too busy right now doing my tax return!
Kidding aside, your gas pedal mod theory might be yet another answer.
I am ready to buy the Camry. Can someone confirm if Toyoto has acknowledged this problem and fixed it.
Thanks
PK
For how many years have I heard, when the airplane I just boarded has a delayed take-off due to some problem, the crew, once it's fixed, comes over the PA and tells us it was a simple black box failure/repair.
I have even had occassion to watch the engine nacelle opened and the engine fuel pump changed out and in the end...
Well, you know...
Maybe my theory is all wet but everything I know and have seen indicates a serious transaxle design shortcoming resulting from the programmers trying to do something with hardware without knowing that the hardware was incapable of the function(s).
Typical.
Please see my post above #2281.
I dropped off my October built, 6cyl, Camry at a Toyota service dept. today. I have about 350 miles so far on it so far. I experienced transmission slipping problems from day 2 or 3. It slips out of Drive at very low speeds (5~7 mph) and re-engages with a thud, most notable when cold or after sitting for a few hours. It also hesitates to shift into Reverse for at least two or three seconds and engages with a thud.
On cold mornings the transmission refuses to up-shift past 3rd or 4th gear. The service tech told me that was intentionally designed aspect of the transmission. "It will not up shift to 5 or 6 until the trans-axel fluid warms up." You buy that? I don't. No other automatic I've driven in the last 30 years EVER behaved that way.
However, I have not experienced the 30-40 mph throttle flare others have written about but then I have only 350 miles on my car so far. Something to look forward to?
For what it's worth my dealership is sympathetic and courteous though seemingly 'surprised' at my troubles and have given me a loaner car in the interim.
The mechaninc said that the problems I was describing sounded like what happens in older tranmission when the transmission fluild is low. However this is a brand new one. I think this is a 'sealed' unit with lifetime fluid. So unless there was not enough to start with - what else could be wrong?
Maybe the some gizmo (ATF pump perhaps) that maintains fluid pressure inside is faulty or under-specd.
As an aside - my question to the group: I understand a little about lemon laws - dealership get three trys at fix this before we can go down the lemon-law isle. But can you tell me, is there a 30-day dis-satisfaction money-back law
in any state?
The only other problem I noticed so far is the plastic molding on top of the front passenger seat doesn't go all the way to the ceiling and leave a hole at one corner.
Silverstar...this can be a normal condition. I have had several cars that exhibited this. It is designed to help the engine warm up quicker, which allows the emission control equipment to do job quicker. The worst emissions are when the car/engine are cold. Not allowing the trans to get into the top gears for a few minutes keeps the engine reving higher, and under more "load" which assists it in getting to normal operating temp quicker.
The other behavior you mention I can't address.
I mainly hear it right as I'm either leaving the house (e.g. backing out of the driveway), or as I'm getting home. Other than that, I rarely hear it. It isn't tied to the brakes, or to a particular gear (e.g. reverse). I told the dealer about it at my last oilchange. They couldn't replicate it, so they didn't know how to try to fix it. Supposedly they checked the brakes and they were fine. I've had friends in the car, and they hear it too if everyone shuts up and listens. It's quite distinct, and extremely annoying. I have 6,000 miles on my car and don't think I should have to put up with this. Moreover, I'm worried that something is mechanically wrong with my car already.
Anyone have a similar experience or have any ideas on what it could be?
Yes, the same thing has happened to our 2007 SE. The rattle seems to come from the passenger side somewhere around the windshield(defrost vents) where it meets the dash. I am taking the car in on Nov 21 for it's first service and I have let them know about it. The first question the service manager asked was did it start since it started getting colder!
I'll keep you posted.
Rob
The transmission downshifts from 5th to 4th at about 28 mph.
My issues lie with the clunky shifting and the flares. Interesting thing in my case is that the flares and the very noisy shifts occurs for me when accelerating gently at lower speeds, not when I'm accelerating harder. When I get on the gas I have not yet had it fail to respond. Sometimes if I'm in a higher gear at low RPMs it will downshift with a slight clunk if I accelerate aggressively, but I would expect that out of any car save a few of the ones in the Professional ball-players salary range.
I will give the dealership time and chances to fix it. I really do love driving the car when it is acting right, which is still the case most of the time.
For those of you who have filed with NHTSA and have been contacted by an investigator, please take the time to respond with the requested information.
I have personally spoken to a NHTSA investigator concerning this issue and he agreed it appears to be a real safety issue. However, to properly gauge the problem, NHTSA needs to hear ALL complaints. If you are still having a hesitation issue with your Camry which is unresolved, file a complaint with the NHTSA. Don’t let Toyota get away with the standard “The vehicle is performing normally” BS. Thank you for you time.
Once again, you may file a complaint using one of the following:
• By Phone: 1-888-327-4236
• Via the Web: http://www-odi.nhtsa.dot.gov/ivoq/
kdhspyder for reply re: dealership takeback.
and to
cappy4103, jbollt and redcam1 re: the cold shifting behavior.
My dealer called back late today and said that my car was ready for pickup - apparently it was like a quart low in tranmission fluid (I think that's the quantity he mentioned on the phone but I may have been mistaken, I'll know for sure when I pick up the car tomorrow). How did that happen in a brand new 'sealed' tranny?
As to the tranmission not shifting up to 5 or 6 when cold. (I get 4300rpm at 50mph) he reiterated that according to Toyota techs, it was intentionally 'designed' to not shift until the fluid was warmer. Sigh! While this may actually be true, not having experienced this ever before - I don't like it. My current Infiniti does not do this and my Dodge van does not do this and this morning, the rented Seinna Van did not do this. So this must be new to the 07 Camry.
I am guessing the gears for the 5, 6 lockout, it could be a 4,5,6 lockout. It is hard to tell what gear really the car is in, so when the car warms up, I'll try the triptronic and see the rpms in the different gears at 50 mph. If someone has already done this and cares to share their knowledge/experience of the RPM numbers at 50 or 60 in the different gears in the 6cyl 6speed transmissions - constant speed mode, I'd appreciate it.
Unfortunately: This fluid top-off did NOT fix my problems - made it worse in fact.
Now the transmission disengages completly while at a dead stop - say at a red light - tranny slips out, engine flares to 1100~1300 and then re-engages with a thud. Happened three times in three blocks. (my foot was on the brake of course otherwise I would have had conjugal relations with the car in front of me.)
Second thing, taking a corner slowly (again under 10 mph) tranny completly disengages, engine revs and then engages hard enough to chirp the front wheels.
And third, the infamous 30~40 mph engine flare finally surfaced for me. I was talking an on-ramp (10~15 percent grade?) to a bridge at 28~30 mph with traffic all around - the tranny slipped and the engine raced to over 4000+ and slammed into some gear hard.
A couple of these problems are new to me. They had not happened before I turned the car over to the service dept. a few days ago.
I returned to the service dept. The service tech who helped me earlier went for a test drive with me - guess what - not one problem - AAAARGHHH!
I went in to talk to the Customer Satisfaction Rep. and explained the history of my problems. He and I went for another test drive. This time the Reverse did not engage when I put it in reverse (YAY!) and when gently going around the corner the transmission slipped out and re-engaged hard. (YAY!) Mind you all this happend under 20 mph. I did not do ANY acceleration stuff. Unfortunately, I could not duplicate the 30mph flare but by then he seemed convinced that the car had issues.
So they said they will have some big muky-muck field tech look at it - I'm back in a rental courtesy of the dealer. I am considering trading over to another new Camry - surely they don't all have these problems, or to an Avalon - do they have the same tranny problems?
I would buy my Avalon again withour reservation, simply the most comfortable, powerful, and economical car I've ever owned - but maybe not if it had the new 6 speed - it sure sounds like that are more bothersome 'bugs' than in the 5 spd.
Thanks for providing this information. I'm not a frequent poster on this site, I have just been reading this forum for the past few months. However, I own a 2007 4cyl Camry and I thought I was alone with the transmission hesitation issues I've been experiencing. After reading all of these postings related to this vehicle I felt compelled to post so that others who have hesitated in the past will come out and voice their concerns for all to see.
The hesitation problems started for my car a few hundred miles after purchasing it late August '06. Initially, I did not think anything of it, just passing it off as the car breaking in and that it would clear itself shortly thereafter. However, since the first time it happened, it has happened every day that is driven. When coming to a stop to cross intersections, it hesitates severely for approximately 2-3 seconds before gradually accelerating. Thank goodness, I have always crossed intersections long before I see approaching vehicles because I have to take this into consideration before making the decision to stay or go especially with this vehicle. Sometimes when you need to accelerate quickly to merge into traffic or change lanes, the car lags before gaining power to safely make a maneuver. When coming to a slow stop to make a turn and then accelerating immediately thereafter, the car lags and then shifts forward quickly which makes the car very unpredictable and sometimes tricky to control. In stop and go traffic, it's the same thing, press the gas, it goes nowhere then when it does, it jumps. This is very irritating in stop and go rush hour traffic. Even despite having the TSB EG056-06(Software Flash)procedure done earlier this week, the very next day, the car hesitated severely when crossing the same intersection every morning that I cross for my daily commute to work.
I've owned only Toyota vehicles and I've never had a problem with any one of them until this one. Something is definitely wrong with this transmission and I hope Toyota addresses this issue very soon as it makes the everyday driving experience very nerve racking and unpredictable. I never thought I would say this, but I have honestly had thoughts of trading this vehicle in for a sedan from another prominent vehicle manufacturer.
i had a 2004 camry 6cyl auto trans and it had EXACTLY the same problems as yours. i felt it was a safety issue for me so i traded in the car for an Acura... why Acura? Because i read the RAV4 was having the same issues too so......
there are times when you need to accelerate ASAP and i never had confidence in my Camry during those times. had exactly those same lag issues when you floor the accelerator and then nothing......... dealer said nothing was wrong and it was normal.
Anyway, VERY happy with my Acura. I used to love Toyota's (and still respect them as a brand greatly) but will not buy until these issues are cleared up (also this Camry had more rattles than any other previous toyotas i've owned combined). BTW, Toyota seems to be acknowledging they're having problems based on too rapid growth according to recent news articles.
In the interest of fairness, the 2001-2003 Acura MDX's had horrible transmissions. it seems that the problems were isolated to those early MDXs (Toyota transmission problems seem to span different models and even next generation models) and it seems Acura is replacing those transmissions for free even after warranty. It seems all manufacturers screw up every so often..... best of luck.
Be kindly in your persistence - remember the Toyota dealer didn't MAKE the car, they are just an authorized reseller of the car and service point. They have to yell at the manufacturer, as they are the actual customer of Toyota, we aren't. We think we are, but actually, Toyota doesn't give a rip about us, it's their Dealers who buy their cars. That's their actual customer, and that's who they'll listen to. We are only the Dealer's customer, and it's they who need to care about our satisfaction - so be nice, but persistent in demanding that your car be fixed. And good luck to all.
NOT...!
NEVER.
Toyota has been well aware of the problem, and in GREAT detail, since its initial inception late in the last century. The problem is that they have been avoiding providing a definitive answer or fix because of the HUGE number of vehicles out there in the marketplace that would need a complete transaxle upgrade.
Initially, 98-99, the problem was pervasive only in the Lexus FWD product line. But they were reluctant to do a recall on the Lexus due to the high potential for loss of prestige to that marque that might be incurred.
So the problem was inadvertently propagated into the entire Toyota FWD and front biased AWD product series.
Puzzling, because at the moment Ford seems to be the only manufacturer that's been willing to step up to the plate and provide a solution.
"..Be kindly in your persistence - remember the Toyota dealer doesn't MAKE the car, they are just.."
Edmunds would delete my post if I said just what comes to mind on reading this statement.
In the process of buying a car from ANY US dealer you will be asked to sign a form wherein you acknowledge that with regards any warranty issue, "The selling dealer has no responsibility to the buyer whatsoever."
That's because many years ago all US dealers lobbied their local state governments to release them from any liability because they were only, JUST, the selling entity.
So don't go asking me to cut any US dealer any slack on this matter.
Also does anyone notice the loud wind noise when on the highway? I also notice the windshield does not have the rubber molding around it as the avalon, solara, highlander does. I was on my cell phone talking and the person I was talking to said it sounded as if I had a window down. This is very anoying. Does anyone have a solution? Thanks
As for the pervasive wind noise you are experiencing. Let the dealer look at the door seals. My SE is very quiet. As for talking on the phone while driving... Don't you know that's dangerous? But if you're using the handsfree/bluetooth speakers while the moonroof is open, others have noticed the "window is open" noise. Solution then would be to close the moonroof when using bluetooth and/or DON'T drive and talk on the phone at the same time. lol
How about your trans? whats up with the RPM Flare fix. Should I wait for a fix or have them put a 3rd trans in?
Always appreciate your info. LOL
DOn't know what the RPM numbers at 50-60 in different gears are off hand. Check the owners manual as I do remember seeing something about gear ranges in it.
Took the
What exactly do you think car phones are for, drjames??? LOL.
My mother's name wasn't Barbara.
How incompetent are they?
1) Putting way more air then recommended in my tires just to get the malfunctioning low tire pressure light to come off.
2) Reusing broken valve stems and not following Toyota's recommended procedures when changing tires.
3) Changing one tire with a different model number and tread while leaving all the other once the same.
4) Over inflating or under inflating tires.
5) Using such lines as we are afraid to touch your car because of the lemon law. Wait for a month for Toyota to send someone here.
They need to stop being so arrogant or in a few years they are going to be seeing the word bankruptcy. All the service advisors have that well to common arrogant smile on their face. The only reason Toyota became so popular was because of the whole quality image. Once they lose that image, GM will destroy them.
Yes, and drJames has probably taken and placed more calls in his "Camry" than anyone else I know.....
How about Lighting a Cigarette? Should we make that illegal while driving? Sipping your Starbucks? Putting on makeup? None of that is illegal.....
Meanwhile, to get back to the topic, I'm alarmed that Toyota has first year woes on the Camry - you don't expect that from Toyota, and usually buy with confidence, first year or not. This is very distressing... very distressing indeed. I like the Camry - personally, I think it's the best in it's class, and the easiest to drive. The Honda is much smaller inside, and stiffer in all aspects. Rides rougher, much more sporty. If you like Sporty, that's great. But I'm too old for sporty, I like the easiest car to drive possible. WITH, an integrated, voice activated and bluetooth cellphone.
Reply to #2333-redcam1, Thanks, I should read the manual more carefully. Anyway that would explain the overdrive lockout.
I'm still not happy about it, but it is nice to know that it is a design feature, and not a design failure.
So apparently the objective is to warm up the engine and tranny parts and fluids quicker so that the car can get to a more fuel-efficient mode as soon as possible.
Basically, reading between the lines I get that it is acceptable to have a cold engine rev higher (over 4000+) for a few minutes and use quite a bit more fuel in the process, because over the long run, the car will save more fuel.
In my specific case. I have a 15 minute morning drive to work. About 2 miles highway and 2 stop-n-go miles City. I wonder if I'll ever see the benefit of this programmed choice.
Given how sedately I drive anyway, that is the only time I see the rpms so high - well then and when the engine flared and re-engaged the other day. :sick: