2007 RX350 Jumpy During Low Speed Acceleration
Thread Starter
Driver School Candidate
Joined: Dec 2009
Posts: 9
Likes: 0
From: KY
2007 RX350 Jumpy During Low Speed Acceleration
Hello all- great board. Hard to describe this problem, but there are times when no matter how much you baby the gas pedal, the car kind of jolts/jumps when you try to accelerate at low speeds.
This would be an example... you go over a speed bump, the speed gets near 0, then you try to accelerate. When you first hit the pedal, the car kind of jumps. Almost like it's constantly selecting a gear too low or something. Doesn't seem to be anything from the transmission, just that there's no way to hit the pedal softly enough.
Anyone seen this before? We took it to the dealer who naturally said this is normal. But, they gave us a courtesy vehicle while other repairs were being made, and I can say with certainty it didn't do the same thing.
This would be an example... you go over a speed bump, the speed gets near 0, then you try to accelerate. When you first hit the pedal, the car kind of jumps. Almost like it's constantly selecting a gear too low or something. Doesn't seem to be anything from the transmission, just that there's no way to hit the pedal softly enough.
Anyone seen this before? We took it to the dealer who naturally said this is normal. But, they gave us a courtesy vehicle while other repairs were being made, and I can say with certainty it didn't do the same thing.
Lexus Champion
Joined: Aug 2007
Posts: 4,507
Likes: 38
From: Bethlehem Twsp. Pennsylvania
Hello all- great board. Hard to describe this problem, but there are times when no matter how much you baby the gas pedal, the car kind of jolts/jumps when you try to accelerate at low speeds.
This would be an example... you go over a speed bump, the speed gets near 0, then you try to accelerate. When you first hit the pedal, the car kind of jumps. Almost like it's constantly selecting a gear too low or something. Doesn't seem to be anything from the transmission, just that there's no way to hit the pedal softly enough.
Anyone seen this before? We took it to the dealer who naturally said this is normal. But, they gave us a courtesy vehicle while other repairs were being made, and I can say with certainty it didn't do the same thing.
This would be an example... you go over a speed bump, the speed gets near 0, then you try to accelerate. When you first hit the pedal, the car kind of jumps. Almost like it's constantly selecting a gear too low or something. Doesn't seem to be anything from the transmission, just that there's no way to hit the pedal softly enough.
Anyone seen this before? We took it to the dealer who naturally said this is normal. But, they gave us a courtesy vehicle while other repairs were being made, and I can say with certainty it didn't do the same thing.
when ever mine act`s up with anything i think is abnormal i clear the ecm. then take it out and drive it like you normally would. question; do you share the rx with anyone? some time`s with these electronic trannies (adaptive learning),it will do this.
Thread Starter
Driver School Candidate
Joined: Dec 2009
Posts: 9
Likes: 0
From: KY
Thanks for the quick repy 114. It's actually my wife's car, which means I'm not overly familiar with it. We both notice it though. How do I go about clearing the ecm? After reading your post, I did a search for ecm and found that it can also be updated/calibrated by the dealer. Should I do this?
The car is actually at the dealer at the moment as we're trying to get any issues with it taken care of because the warranty expires in 12 days.
The car is actually at the dealer at the moment as we're trying to get any issues with it taken care of because the warranty expires in 12 days.
Lexus Champion
Joined: Aug 2007
Posts: 4,507
Likes: 38
From: Bethlehem Twsp. Pennsylvania
Thanks for the quick repy 114. It's actually my wife's car, which means I'm not overly familiar with it. We both notice it though. How do I go about clearing the ecm? After reading your post, I did a search for ecm and found that it can also be updated/calibrated by the dealer. Should I do this?
The car is actually at the dealer at the moment as we're trying to get any issues with it taken care of because the warranty expires in 12 days.
The car is actually at the dealer at the moment as we're trying to get any issues with it taken care of because the warranty expires in 12 days.
To properly clear the ecm,it should be done via a scanner. but you can also do it by pulling the neg.battery terminal. The problem with doing it that way is you loose your pre sets on radio,along with power window`s etc. You can also clear it by pulling the fuse for the computer. Although,it doesnt alway`s do it that way. As far as the tsib for the transmission,it`s only supposed to be for certain years,so definitely ask them to look into this for you. I hope this help`s. I had the shift feel tsib done on my 05,and it made a huge difference.
Thread Starter
Driver School Candidate
Joined: Dec 2009
Posts: 9
Likes: 0
From: KY
Yes. My wife took it in. And I do know they said they reset something computer-wise that was causing issues with the power windows and moonroof. So maybe they've already done something with the ecm.
Anyway, I'm going to be the one to pick it up. Wondering if I should call them beforehand though to ask about ecm calibrations or the tsib 114 mentioned.
Anyway, I'm going to be the one to pick it up. Wondering if I should call them beforehand though to ask about ecm calibrations or the tsib 114 mentioned.
Lexus Champion
Joined: Aug 2007
Posts: 4,507
Likes: 38
From: Bethlehem Twsp. Pennsylvania
Yes. My wife took it in. And I do know they said they reset something computer-wise that was causing issues with the power windows and moonroof. So maybe they've already done something with the ecm.
Anyway, I'm going to be the one to pick it up. Wondering if I should call them beforehand though to ask about ecm calibrations or the tsib 114 mentioned.
Anyway, I'm going to be the one to pick it up. Wondering if I should call them beforehand though to ask about ecm calibrations or the tsib 114 mentioned.
Trending Topics
Thread Starter
Driver School Candidate
Joined: Dec 2009
Posts: 9
Likes: 0
From: KY
Thanks 114. I'll give them a call in the morning. By the way, I just want to make sure the TSIB is available on the 2007 rx350? I didn't see it listed on the aboutautomibile tsib list for 07...
Last edited by Dokker; Nov 19, 2010 at 05:05 PM.
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
Top 10 Most Confusing Things Lexus Has Ever Done!
Joe Kucinski
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles
Michael S. Palmer
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4
Joe Kucinski
8 Weirdest Things Lexus Has Ever Built
Verdad Gallardo
10 Lexus Designs That Have Aged Like Fine Wine
Verdad Gallardo
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Driver
Joined: May 2010
Posts: 122
Likes: 0
From: st augustine,fl
well the shift problem you are mentioning has been debating here many of times and the outcome of how to get it fixed varies. I have an 08 and I have the shift problem to some degree. my brother has 2010 venza and has the same problem to some degree. so What I am trying to say is design issue that affects a small percentage of their cars.
I gave up on my own.
In your case it would not hurt to have the dealer check on it since you have warranty
I gave up on my own.
In your case it would not hurt to have the dealer check on it since you have warranty
why?? ^^^^
Driver
Joined: Sep 2010
Posts: 123
Likes: 1
From: Ca
Jumpy acceleration is driving behavior related. Aggressive drivers tend to cause this problem. First thing i would do is to disconnect the negative end of the battery. Let it reset after 5 min and reconnect the battery. Next, put in your key to ON switch and reprogram windows by rolling it all the way down and and up for all 4 of them and sunroof by holding the tilt button until the roof tilts, closes, slides back and then slides forward in 1 continuous motion then release.
Then take your car out and drive it like you would drive when you have company and small children in the car. The RX will learn your driving style after a few trips (2 most) and react to the way you drive thereafter. Hope it help!
Then take your car out and drive it like you would drive when you have company and small children in the car. The RX will learn your driving style after a few trips (2 most) and react to the way you drive thereafter. Hope it help!
Last edited by Nick318; Nov 24, 2010 at 10:44 AM.
