G37 7speed transmission reprogram
06-06-2011, 04:53 PM
#586
Registered User
the Ghost, THX for the update.....My Dealer has not volunteered to have Reps from Infiniti "monitor" my car. Never in my entire 40+ years of driving, owning , and renting cars - numerous cars - have I ever heard that "Heart Monitors" are now Required.....WTF is that. Is the Patient Dead???
06-06-2011, 06:00 PM
#587
Registered User
I drive full time in DS, VDC off, unless the roads are wet or other slippery conditions exist. The only time I've experienced lag is when I've pushed the car to the limits of adhesion and then stand on it coming out of a corner, with the VDC engaged. It then behaves like all 3 of my previous VDC equipped Subarus, dumping speed before taking up the throttle.
Almatti, it does sound like your car may be among the few with actual defects. I think that there are indeed thousands of posts about 7AT issues if you dig them up on all the threads in all the forums where they've been discussed. For the most part, they seem to be remarks from people who don't like the way the 7AT works by design, but there are certainly some, like yours, that report what appear to be anomalies from the normal characteristics of the transmission. I suspect that there's so much background noise from folks who just don't like the way the thing works that it's difficult to get dealers to recognize actual problems for the few who have them.
So, what's next for you? Have you started narrowing down your choices?
Almatti, it does sound like your car may be among the few with actual defects. I think that there are indeed thousands of posts about 7AT issues if you dig them up on all the threads in all the forums where they've been discussed. For the most part, they seem to be remarks from people who don't like the way the 7AT works by design, but there are certainly some, like yours, that report what appear to be anomalies from the normal characteristics of the transmission. I suspect that there's so much background noise from folks who just don't like the way the thing works that it's difficult to get dealers to recognize actual problems for the few who have them.
So, what's next for you? Have you started narrowing down your choices?
06-06-2011, 09:36 PM
#590
Registered User
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So, I just had the ECU/TCM update performed on my 2009 g37x and it definitely shifts a lot smoother right now. I don't feel the throttle kick up as much as it used to between shifts. But how much of that is attributed to the learning buffer? I also notice that DS mode is a lot less aggressive than it used to be.
When I had the work done, I was driving a 2010 loaner g. That car also seemed to shift pretty smooth compared to what I had gotten used to on mine, so that gives me some encouragement. Keeping my fingers crossed.
When I had the work done, I was driving a 2010 loaner g. That car also seemed to shift pretty smooth compared to what I had gotten used to on mine, so that gives me some encouragement. Keeping my fingers crossed.
06-06-2011, 11:38 PM
#591
Im starting to notice the lag/quirks with my 7AT. Im not too worried about it (there is always paddle shifting 
), but the only thing I can say about it is that the transmission obviously has the ability to act correctly after an ECU reset, so it seems like its definitely a software issue.
Hopefully Nissan/Infiniti can track it down. Surely there are tons of complaints out there somewhere, since it seems even the Ms might have the same problem.
), but the only thing I can say about it is that the transmission obviously has the ability to act correctly after an ECU reset, so it seems like its definitely a software issue.Hopefully Nissan/Infiniti can track it down. Surely there are tons of complaints out there somewhere, since it seems even the Ms might have the same problem.
06-07-2011, 01:09 PM
#592
Registered User
Im starting to notice the lag/quirks with my 7AT. Im not too worried about it (there is always paddle shifting ), but the only thing I can say about it is that the transmission obviously has the ability to act correctly after an ECU reset, so it seems like its definitely a software issue.
Hopefully Nissan/Infiniti can track it down. Surely there are tons of complaints out there somewhere, since it seems even the Ms might have the same problem.
), but the only thing I can say about it is that the transmission obviously has the ability to act correctly after an ECU reset, so it seems like its definitely a software issue.Hopefully Nissan/Infiniti can track it down. Surely there are tons of complaints out there somewhere, since it seems even the Ms might have the same problem.
The last two days, I've now tried to implement another member's drive style with this car. When cruising and you need to accelerate shift into DS mode for a "quicker" reaction downshift, when you blance out shift back to D mode. Same with a quick braake and gas move. seems to help a little IMO....but if I leave it in D Mode- still get that Lag....I can't stand it when my $40K car does that. Worse part of it: Everything else is so great about this car: style, ride, HANDLING, Braking, the interior (could a bit roomier), except for this freakin 7 speed Auto Tranny.
06-07-2011, 07:02 PM
#593
The fact that Nissan added a "cannister" to monitor data leads me to believe they are at least taking the problem sorta seriously. Hopefully its just a simple thing like tweaking a learning algorithm, adjusting a sensor, etc. There are lots of things at play with this tranny, including a yaw sensor. Any glitch in those values might lead to inaccurate stored data. Im actually fairly hopeful they can find something, especially if they have a working baseline (i.e. reset ECU and it works fine for a bit).....it could just be a matter of comparing data before and after shifting gets wonky.
06-07-2011, 10:27 PM
#594
The fact that Nissan added a "cannister" to monitor data leads me to believe they are at least taking the problem sorta seriously. Hopefully its just a simple thing like tweaking a learning algorithm, adjusting a sensor, etc. There are lots of things at play with this tranny, including a yaw sensor. Any glitch in those values might lead to inaccurate stored data. Im actually fairly hopeful they can find something, especially if they have a working baseline (i.e. reset ECU and it works fine for a bit).....it could just be a matter of comparing data before and after shifting gets wonky.
06-10-2011, 10:21 AM
#595
I've had my reprogram since October of 2010, and I can't be happier with it.
Every once in a while it seems confused, but for the most part no problems.
It is hands down so much improved over what is was from the factory when I bought it.
I feel you though, if you have continued problems with the tranny after the reprogram.
I still feel that my G has plenty of power, good throttle response (from a stand still, slow rolling, and highway speeds).
I too am very glad this thread exists.
Every once in a while it seems confused, but for the most part no problems.
It is hands down so much improved over what is was from the factory when I bought it.
I feel you though, if you have continued problems with the tranny after the reprogram.
I still feel that my G has plenty of power, good throttle response (from a stand still, slow rolling, and highway speeds).
I too am very glad this thread exists.
06-10-2011, 10:42 AM
#596
I've had my reprogram since October of 2010, and I can't be happier with it.
Every once in a while it seems confused, but for the most part no problems.
It is hands down so much improved over what is was from the factory when I bought it.
I feel you though, if you have continued problems with the tranny after the reprogram.
I still feel that my G has plenty of power, good throttle response (from a stand still, slow rolling, and highway speeds).
I too am very glad this thread exists.
Every once in a while it seems confused, but for the most part no problems.
It is hands down so much improved over what is was from the factory when I bought it.
I feel you though, if you have continued problems with the tranny after the reprogram.
I still feel that my G has plenty of power, good throttle response (from a stand still, slow rolling, and highway speeds).
I too am very glad this thread exists.
06-10-2011, 10:54 AM
#597
Registered Member
I've had my reprogram since October of 2010, and I can't be happier with it.
Every once in a while it seems confused, but for the most part no problems.
It is hands down so much improved over what is was from the factory when I bought it.
I feel you though, if you have continued problems with the tranny after the reprogram.
I still feel that my G has plenty of power, good throttle response (from a stand still, slow rolling, and highway speeds).
I too am very glad this thread exists.
Every once in a while it seems confused, but for the most part no problems.
It is hands down so much improved over what is was from the factory when I bought it.
I feel you though, if you have continued problems with the tranny after the reprogram.
I still feel that my G has plenty of power, good throttle response (from a stand still, slow rolling, and highway speeds).
I too am very glad this thread exists.
Just curious: what is it about this thread that makes you like it more than the gazillion other ones about the same issues? Or are you glad all of them exist?
06-10-2011, 12:42 PM
#598
I was browsing a 370Z board the other day and found no complaints about the 7AT in the first 10 pages or so. I am confused
I have yet to have my 09 updated with the latest re-flash because it doesn't seem to fix 2 issues that I experience:
1. Flare when it's warm
2. Hesitation when I drive around 60, slow down to 20, then try to accelerate.
I did have the first re-flash though. And that definitely fixed the 4-3 downshift jerkiness.
06-12-2011, 01:00 PM
#599
In case you have not actually read the thread, it started as an announcement about a TSB and reflash issued in December 2010, a couple of months after your reflash.
Just curious: what is it about this thread that makes you like it more than the gazillion other ones about the same issues? Or are you glad all of them exist?
Just curious: what is it about this thread that makes you like it more than the gazillion other ones about the same issues? Or are you glad all of them exist?
I'm glad this problem is getting attention. It's information is getting to more and more owners, and while I can not prove that Infiniti reads these, I know that more and more people are posting that they are discussing these trans. issues with their service advisors.. and that definitely gets to infiniti. I knew this car had its 7AT issues prior to purchase, and I took extensive, multiple test drives to make sure I could live with it. And while the initial tranny program I could not live with (the factory setting), the subsequent re-program made this a new car for me, and I am very happy with it.
Hope that answered your question.
Is this the smoothest transmission I've ever driven, hell no. Do i wish it was better? Heck yeah. I do not regret my decision to purchase car, but will never buy a 7AT from Infiniti again. I'm just very glad it's driveable now and i can get my 80k miles out of it ('till my extended warranty is up) and get a new car without any significant problems.
Last edited by PeterUbers; 06-12-2011 at 01:02 PM. Reason: forgot to add a few lines
06-12-2011, 06:17 PM
#600
Registered Member
Peter, my point was that your reflash pre-dated the one this thread is about, and that's not an "in your face thing", it's because some folks may not have realized there are multiple flashes out there. I do apologize for suggesting that you had not read the thread, I guess that did have an "in your face" tone. Glad you find the performance acceptable now.