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Infiniti G37 Transmission Problems

219 messages,  Last post on Apr 20, 2013 at 12:45 AM

You are in the Infiniti G37 Forum.

What is this discussion about? Infiniti G37, Sedan

    
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Messages Page 18 of 22

#170 of 219 Re: Transmission Woes on 2011 G37 [joefris] by amojeba

Mar 07, 2012 (1:59 pm)

Replying to: joefris (Mar 07, 2012 7:04 am)
Hi Joefris
 
I can assure you that the National Vehicle Safety Administration does NOT, I repeat, NOT issue safety recalls. They can investigate the matter if they choose, and make recommendations. But that's about it.
 
But it is ultimately up to the manufacturer to issue recalls. A company's decision whether to recall is purely a financial one. They calculate the math, and decide if it's cheaper to issue a broad sweeping recall, or deal with each complaint and repair (if there is one) on an individual case by case basis.
 
In this case, there will never be a recall, b/c there's no "fix" for it.
 
I'm not saying I agree with it. But those are the facts of how it works. I've contacted NVSA myself regarding another vehicle in the past, and no matter how many complaints they get, nothing can prompt a recall.
Your best bet is a class action lawsuit. That's how Honda settled their defective rear brake design that wore out after only 12k miles.

#171 of 219 Poor Results Dealing with ICA : re- 7AT by almatti

Mar 07, 2012 (4:13 pm)

I have posted here numerous times. I am also a labeled complainer on MYG37.com. BUT I am pissed now. I've had the District Mananger from Infinti test drive my car after the first complaint filed. Read my earlier posts of the results and comments from them. My second attempt resulted in a Factory Tech taking a drive conecting his PC to the car while I drived. It did pick up a couple occassions of the Hesitancy in his matrixes. He said that : they have exhausted all avenues and the only real fix would be new Trannies with complete new programming to alleviate this. "My car is working as designed" , that's the standard response. I have demanded via ICA rep to take back my leased car w/o spending another cent in lease paymenst and with NO FURTHER OBLIGATIONS. They refuse. I need to try to negoatiate now with Infiniti Financial with whom I have leased the car. ICA will not supply them a copy of the entire transcript of the two complaints. So here I am, voicing my disgust. Now I will take this up with the Financial people and see if I can out of this lease early and Move on....

#172 of 219 new by palmer12

Mar 09, 2012 (10:45 pm)

I can say that I had my tires on my G37XS replaced with a set that gives a softer ride, and it has greatly improved the driving experience. So without any knowledge of the Accord, if you go with the G25x, I'd suggest considering those softer tires, constantly checking with the dealer for computer software updates for the transmission, and a shorter lease (like 24 months), in case you can't stand the transmission after all. Good luck.

#173 of 219 Re: Update on Software Fix [llanosteve] by mouseclick

Mar 13, 2012 (11:53 am)

Replying to: llanosteve (Mar 07, 2012 12:41 am)
llanosteve,
 
Your idea about disconnecting the battery made logical sense to me. I decided to try it and it has actually made a night and day difference! I will not say it's totally fixed it - I still notice a tiny hesitation (though only sometimes) when accelerating from around 5-10 mph (rolling start, 1st to 2nd) - but, it's probably 95% better overall. I would recommend everyone try this fix. Below is what I did but first a little background.
 
In case it ends up mattering, I have a 2011 G37S sedan. I understand the G has an algorithm that learns your driving habits. With this assumption, it's important that you drive aggressive and try and duplicate the problem during the fix - as many times as possible. For example, I would drive down a street at 25, 35, 45 and highways at 55, 65, 75, etc. Instead of keeping a smooth throttle, I purposely let go of the gas and then instantly punched it again at all of these speeds - I would do this punch-and-go around once or twice every 1-2 minutes and I mean floor it so it goes above 5,500 rpm. I kept doing this over and over again, sometimes also hitting the brakes and sometimes just letting off the gas. You might look like a bad driver to those nearby but, it will be worth it as you teach the car not to do / learn the problem anymore. I did this for half a tank of gas. Now, for what I did…
 
Make sure you have half a tank of gas as you'll want to do the above paragraph for at least half a tank. Disconnect the negative battery terminal and keep it disconnected for at least two hours. When you reconnect it, your automatic window up feature may disable - mine did. To re-enable it, simply open your driver's side door and start the car - after the car starts, then close the door. Push the button to roll down the driver's door window automatically. Then, pull up and hold the window up button - keep holding it in the up position for a full five seconds after the window has closed entirely. This will reprogram the one-touch up feature to work again. You may have to duplicate the steps for each window. I only had to do it for the driver's side front and rear doors (two doors) and it fixed it for all windows (four doors). Note that disconnecting the battery will also reset some data on your dashboard readout - it didn't reset any navigation or stereo settings on my car, just the dash.
 
With that completed, start driving - do the steps in my second paragraph to drive aggressive. You don't have to finish the whole tank in one sitting. Just make sure each time you get in and restart the car that for the remainder of the half a tank of gas you drive aggressive and try and reproduce the problem as often as you can. I've now refilled the tank again and have resumed normal driving and the car drives as it should - no noticeable transmission lag - except for a tiny but somewhat acceptable lag from a rolling start of 5-10 mph. Hopefully once the software patch does come out it fixes this problem too. However, this process has made my car as enjoyable as I expected it to be.
 
I wonder if this problem happens because during the engine break-in period we are all driving the car like grandmothers and so it learns to behave the same way??? It's absolutely dumb that Infiniti has not figured this out - it will be interesting to read if this works for anyone else. It actually makes me wonder if Infiniti is even trying to address the issue since it would seem testing of the issue would have led them to find this fix - one would think their engineering team would be savvy enough to figure this out. Anyhow, good luck and, again - please do post if this works for you too.

#174 of 219 09 Infiniti G37 by g37tn

Mar 14, 2012 (7:23 am)

Bought this slightly used G37 in 2009. It had shifting issues in low gears right away. I took it to the Infiniti dealer and was told this was normal for this car. They changed the transmission fluids and sent me on my way. I continued to have shifting issues periodically. Now that I have just over 60,000 miles on it, it shifted VERY hard several times this morning, (feeling as if being rear ended by someone). Then, suddenly started to take off on its own while stopped a couple of times at stop lights. I pulled into a parking lot and tested it so I would not be broken down on the road and it got much worse and now has a jerk and buck between every shift and upon acceleration. Called the dealer and had them look at my 2 time history there for this issue. They say to have it towed in for computer updates? Of course at my expense.

#175 of 219 Re: 09 Infiniti G37 [g37tn] by srs_49

Mar 14, 2012 (11:37 am)

Replying to: g37tn (Mar 14, 2012 7:23 am)
Isn't it still under warranty?

#176 of 219 Re: Update on Software Fix [mouseclick] by almatti

Mar 28, 2012 (2:40 pm)

Replying to: mouseclick (Mar 13, 2012 11:53 am)
mouseclick, after two weeks, has the lagging returned? I reset my car last year, once or twice, I did NOT follow your protocol of Aggressive Driving in the pattern you describe. BUt I was more aggressive, afetr a while, the lagging / hesitation returned. I have followed the recommendation of the Factory Tech who looked at my car afew monthe back: Drive it DS mode for a week or more in all scenarios. That did not correct the problem, maybe a just a little better response. But as I have posted here and at MyG37.com, it continues to perplex me, that this problem can vary from one day to another. It is the outside Temps, baraometric pressures, etc...that appear to affect the ECM's software AND it's the crappy JATCO Tranny too.
 
I think I will file the complaint with the National Vehicle Safety Administration as others seem to have done. Maybe we ALL should. My pitches to Infiniti Financial for a No cost release from the exisitng lease fell on Deaf Ears...They don't care. Just make your payments or I will be in delinquency...

#177 of 219 join the club by ejzinn

Mar 28, 2012 (2:58 pm)

Welcome to the unhappy G37x owners club! I think we can try all means possible but the only thing that will get their attention is a drop in sales from unhappy customers. When they upgraded from the G35x to the G37x they screwed up with the transmission, and will not admit it. For my part I will go back to a BMW,(as soon as my lease is up or sooner), even though I hate the runflat tires, I would rather have an engine that performs impeccably, than one that is as unsafe as this one is!

#178 of 219 Re: Update on Software Fix [almatti] by mouseclick

Mar 29, 2012 (4:02 pm)

Replying to: almatti (Mar 28, 2012 2:40 pm)
So far, so good. I still only notice a lag from around 5-10 mph but not at other speeds. The responsiveness has improved. Now, I still want a fix for the 5-10 mph part because that is still annoying (going over speed bumps and then accelerating out of them; rolling stops; etc.). I guess I could try and reset the battery again and try and repeat my procedures with an emphasis on that part. But, I'm going to wait another month. I nag Infiniti Consumer Affairs monthly about a fix - last they told me 2 months ago was that it was 6 months away. I honestly think they're not in a rush, which is sad treatment. I've purchased four Infiniti cars in my time and they've always been more than responsive until this time. Not sure what happened - what change in management or something else…

Messages Page 18 of 22

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