Last post on Nov 23, 2013 at 11:07 AM
You are in the Toyota Avalon
What is this discussion about?
Toyota Avalon, Sedan
#13453 of 14961 Re: Toyota discontinuing Avalon [fin]
Feb 13, 2007 (8:39 am)
Ive had my 2007 limited for 3 months and have had no bothersome problems with the transmission. I have noticed that when coming to a stop, the transmission seems to "release" the engine braking. There is a slight but noticible feeling that the car suddenly looses the engine "drag".This is probably to allow the engine to drop to lower RPM and thus save a little gas.
I have also noticed that in the situation that bobwiley describes, that when I accelerate after slowing to say 10 MPH, the transmission downshifts and the engine revs in away that I would not allow if I were driving a stick shift. This reving is very short in duration, the acceleration is smooth and prompt, so it is not a problem for me. I wonder if changes have been made in the software controlling the transmission in the 2007.
I also have a 1997 Avalon that I still enjoy driving but in my opinion the 2007 is a quantum leap forward
#13454 of 14961 Re: Toyota discontinuing Avalon [blackdog4]
Feb 13, 2007 (11:44 am)
"...This is probably to allow the engine to drop to a lower RPM and thus save a little gas..."
No, that's exactly what I thought at one time. You're losing the engine braking drag because that drag on a FWD vehicle can easily result in loss of control, directional control, if the roadbed happens to be slippery. You may notice that it also happens at higher speeds, the transaxle upshifts upon a FULL lift-throttle event.
Look around, Google for:
wwest "throttle lag" hesitation
For more detail.
Or start by reading the post I just added for the Suzuki SX4 thread.
#13456 of 14961 Re: Toyota discontinuing Avalon [wwest]
Feb 13, 2007 (3:19 pm)
no, I was acutally talking about the GS, the Avalon being a larger car in all respects, and much closer to the LS in some. The GS and the Camry are closer in size to each other.
#13457 of 14961 Re: Toyota discontinuing Avalon [bobwiley]
Feb 13, 2007 (4:24 pm)
Your experience with sudden shift after slowing down and accelerating has happened to me two times. After I slowed down almost to a stop I floored the accelerator and the car stood still and the engine roared for several seconds, then jerked into gear.
This to me is "transmission slipping" for whatever reason you want to use. Worn out clutches act this way and poor computer selection for the shifting timing act this way.. Anyway it happens.
I have used the manual shift a number of times until I found I was in 3rd gear doing 60 mph.
#13458 of 14961 Re: Backup Camera [jlsexton]
Feb 13, 2007 (4:46 pm)
The camera is built in at the top of the license frame. It can be adjusted up or down. The lens is about 3/8 inch round and sealed in a glass cover.
There is way to know when you are close. I angled the camera so I could not see anymore ground and still had 12 inches before touching anything.
The electronic box is designed for the Avalon navigation computer unit in the trunk. You disconnect two multiwire terminals and install the box terminals and then replace the Avalon terminals on top. The power source to the camera part comes from the back up wire. When the shift lever is placed in reverse, the back up light gets power and so does the box sending the camera signal to the factory navigation screen. When shifting to drive the normal navigation unit comes on. I had to run wires to fuse box under the dash for power and ground.
I looked at the $100 wireless units. Some can be turned on all of the time or only come on when wired to the back up lights. I was afraid to get one because of the small angle viewed and poor picture quality. I did not want a blank screen mounted somewhere up front.
Check the internet re back up cameras. There many out there.
#13459 of 14961 Re: Toyota discontinuing Avalon [ange]
Feb 13, 2007 (6:13 pm)
ange: I'm just tired of the quirky tranny--that's why I use the manual mode. I can't accept the DBW problems--an automatic is supposed to be just that. I'm just glad the Avy has the manual capability. Have you reported your problem to Toyota and to NHTSA. If not, I'd do so and then you have it on record. If enough of us complain--who knows?
#13460 of 14961 Reminder -- how to cure quirky shifting episodes
Feb 13, 2007 (8:47 pm)
ange, bobwiley and anyone else who has experienced occasional RPM surges or quirky shifting,
All you need to do is to shift out of D, into S and 5, and just leave it there.
In the S-5 mode, the car will shift through all the gears as needed, but with no attempts at "learning" and no surprises. Keep driving as you would in D. No need to shift up & down manually through the gears (unless you enjoy this exercise, of course).
If this doesn't cure it, check your foot placement on the gas pedal. Avoid toe-driving. The Av has a sensitive accelerator that is best controlled by applying foot pressure on the middle or the top half of the gas pedal. Toe driving can cause lags and surges, as was extensively discussed in this thread over a year ago.
Just about 2 years already and still impressed with my XLS.
#13461 of 14961 Re: Reminder -- how to cure quirky shifting episodes [havalongavalon]
Feb 14, 2007 (6:47 am)
Thanks--I'll try it next time and let all know the results. I must admit, I do like the manual capability when desceding the Ozzark hills--let the motor help with the braking. All this Drive By Wire (DBW) is Driving Me Nuts (DMN)--guess after driving for about 53 years you can always learn something new!
#13462 of 14961 Re: Toyota discontinuing Avalon [bobwiley]
Feb 14, 2007 (8:19 am)
I sent an e-mail to toyota and all they did was refer me back to the dealer. The dealer service people, some of them,
agree there is a transmission problem. They tell me toyota is working on it. I'll have to complain to NHTSA to be another on the list.
The unexpected slip-miss when trying to get into a fast traffic lane could or can be an accident or near miss. I have driven many company cars, got a new one every two years, and never experienced the transmission slippage during fast acceleration or the hesitation in slow traffic that the avalon exhibites. It is not a nice thing to say, but when you have a company you can do some things you would never do when you pay for the car. I did some tough driving with these cars and none hesitated and slipped as does the avalon.
There have been times, maybe 1-2 times per year when the car would be a situtation when speed, gear, and rpms would be such that the transmission controlling electronics would be so close to going one gear up or one gear down and a slight hesitation would happon. This flaw and was liveable and not annoying, especially when it happens more on a freakish basis. I believe I can duplicate the avalon slippage when slowing and then fast acceleration.
I tried the manual mode in slow rush hour traffic and I could not see no any improvement. It is kind of embarassing to have your friends in the car and they comment on the poor transmission changes.
I don't know why toyota, knowing they had transmission problems in the lexus models before the avalons, 2005's, came out, and still did not do anything. Then making the same transmission throuh 2007, doesn't make any common sense. I think it makes 'money sense' to them.