Last post on Mar 14, 2013 at 7:46 PM
You are in the Infiniti M37 M56
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Infiniti M37, Sedan
#173 of 187 Re: Quirky /Jerky 7AT Transmission [sgl1]
Jun 20, 2012 (4:51 pm)
Not sure if this helps, but it looks like Infiniti is finally addressing these issues:
Subject: SB 2011-2012 M37; Shift Responsiveness Issues
Summary of ITB12021:
IF YOU CONFIRM One or more of the following conditions: Harsher than expected down shifts when coasting to a stop. Hesitation/lag when accelerating after coasting. Hesitation/lag or harsher than expected down shifts when coming to a stop and accelerating again (rolling stop). Engine rev matching during moderate to heavy braking. ACTION 1. Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on. 2. If this bulletin applies, reprogram the ECM and TCM. See this bulletin for further detail.
#174 of 187 Re: Quirky /Jerky 7AT Transmission [ashn888]
Jun 20, 2012 (5:56 pm)
Only a year late....I bought out my m37 lease....leased a Mercedes e350 for less$'s per month and haven't looked back. I love the Mercedes....hated the m37 transmission which I considered unsafe. Hope this solves the problems for those locked into the m37. I won't buy another infiniti...
#175 of 187 Re: Quirky /Jerky 7AT Transmission [ashn888]
Jun 20, 2012 (6:36 pm)
Thanks for posting... This TSB must have just come out as I don't even see it listed at Safercar.gov yet. I'm very anxious to see if they finally fixed it. ...It's hard to believe this was missed when cars were initially handed to Infiniti general managers to drive during initial release of this car two years ago. Come on Infiniti, you can do better than that!..
Anyway, fingers crossed! I'll be back to the dealership very soon and will post results here.
#176 of 187 Re: Quirky /Jerky 7AT Transmission [ashn888]
Jul 31, 2012 (9:23 pm)
Had that updated. didnt do anything..... had it flashed? Guess thats not the issue?
#177 of 187 Re: Quirky /Jerky 7AT Transmission [ashn888]
Aug 01, 2012 (6:45 am)
I have an '11 M56X. I was excited to hear about the new update to the ECM & TCM. Unfortunately when I brought the car to the dealer they said my car already has the latest updates. Ugh, I thought to myself ...Really hoping they finally fixed these transmission problems!
When in normal mode, the transimission shifts pretty much as expected, but there's still a delay in response when pressing the accelerator hard btwn 30-60mph.
However the trouble is much more prominent in Sport mode.. Three issues really:
1.) Delay in initial response when moving foot from brake pedal to gas quickly.. Seems tranny is not engaged with engine while the car is stopped, ..perhaps to save fuel, but it creates a jolt-effect when wanting to take off quickly.
2.) Transmission holds 4th gear way too long, to over 4k RPM, during regular driving. Seems this happens if you take off from a start quicker than normal. I understand that Sport mode holds the gears longer, but there's a problem with the software in 4th gear... I typically have to move the shift lever to manual mode, then bump the tranny to 5th gear to compensate for this flaw.
3.) I'm a conservative driver, but on a few occasions, when driving in more of a sporty fashion... I notice a harsh down shift when letting my foot off the gas when going about 70mph. Feels like a bang in the tranny, as if it shifted to too low of a gear. ...There was definite engine braking as I think it went from 6th gear to maybe 3rd.. Not sure, but that can't be good for the tranny.
...Still hoping Infiniti is listening and decides to fix these flaws.
#178 of 187 Infiniti M37 Design Flaw?
Oct 25, 2012 (6:46 am)
My 2012 M37, with the upgraded sound system, has a rattle in the doors when songs with relatively heavy bass are played at more than about 60-70% of the maximum volume. The rattle is so significant that it almost sounds like the door speakers are blown. Mechanics at the dealership tested other cars on their lot when they learned of my complaint, and informed me that all the other cars have the same issue.
If true, this is a design flaw in the new M class Infiniti -- at least I can think of no other answer.
The dealership was great -- they kept the car over a week, working to fix the problem. They were unable to fix the problem, however. Accordingly, Infiniti sent out a specialist to look into the problem. His report indicated there was no problem, notwithstanding that both I and the dealership techs clearly heard the buzzing. It's unclear to me whether he didn't hear the problem, or if he is saying that this problem is somehow acceptable based on Infiniti design parameters -- he has refused to speak with me, according to the customer service rep at Infiniti with whom I've been speaking.
This is beyond disappointing. I paid extra for the upgraded sound because sound is important to me. For Infiniti to refuse to address the problem, and even to refuse to do me the courtesy of having the specialist that looked into the issue discuss his findings with me, speaks to a lack of concern for the customer.
#179 of 187 Infiniti M37 Transmission issues
Oct 29, 2012 (1:32 pm)
I am having similar transmission issues as others have described with my 2011 M37--Transmission is slow to respond when moving from braking to accelerating or even in attempting to pass. I've called the dealership and am taking it in today. I do have to say that other than this issue, I really like this car.
I will also fill out the vehicle safety complaint.
#180 of 187 Re: Infiniti M37 Transmission issues [mdroamer]
Nov 09, 2012 (9:19 am)
I have previously posted about my problems with the M37 Transmission. Here is an update
Several months ago they replaced the torque converter which improved things significantly. The dealer service manager said it was a new model (different, not just a replacement). Still had harsh shifts going into either 3rd or 4th (not sure) but it was obvious.
Had car serviced yesterday and it appears to have been corrected.
Stay on the dealer if you have this problem - for me it was the torque converter and software.
I agree - it is a great car!
#181 of 187 Re: Infiniti M37 Transmission issues [brian7042]
Dec 26, 2012 (4:41 pm)
Never been here before; I was looking to see if anyone has the transmission lag that I have in my 2011 M37S. Sure looks like it! With 24K miles on the car, this is getting worse all time. For me it's when I take this left turn to go onto a freeway onramp; taking my foot off the throttle a bit after I'm in the turn, and trying to accelerate out I get the dreaded lag - I am just fed up with it!
While I'm here, things I love about the car: Wonderful interior, excellent engine power and sounds - too bad the transmission you use to control it is so irritating, it spoils the whole experience. I like the looks of the car too - the Platinum paint job with the 20" wheels and spoiler look awesome..
What I HATE: Really loud tires and harsh suspension. Laughable Studio on Wheels upgraded audio - has tons of speakers but they only work if you have HD DVD media. The sources I listen to, i.e. iPod and CDs, very few of the speakers put out any sound, and the ones that do sound very mediocre. When I first test drove the car, they had a demo disc that blew me away, but you will never hear that stuff in your day to day driving unless you go out and buy expensive media to listen to that will only work in your car. Why can't they keep all the speakers functional for simple stereo sources too?
What else I hate : Really flaky intermittent electronics issues that never seem to happen when I'm at the service department. And of course if they can't duplicate the problem they won't try to troubleshoot it anyway - typical service bullshit. For example, when you have it set to have the side mirrors point down when in reverse, that works fine, but when you stop and put it in drive they stay pointing down half the time. You have to pull over and stop, and put it in park for them to go back up to normal position. After months of frustration and trips to the dealer, I finally abandoned this "feature" and leave it turned off.
Also the tilt wheel that never goes back to the position it was in when the car was turned off (except when I have it at the dealer for service, of course).
My Android phone works fine for bluetooth phone calls, but when I also try to use it to stream audio from the phone it doesn't work well at all unless you like jerky audio with blank spots. When I had an iPhone it worked fine, but I learned to hate the iPhone for reasons not related to the car and got a Galaxy S3. I think car manufacturers think everyone has an Phone so focus on perfecting that.
When all is said and done, after the 39 month lease is up in Dec. 2013, I'm going for a new BMW 535i or Lexus GS, and NEVER going back to Infiniti....
#182 of 187 Re: Infiniti M37 Transmission issues [redbull]
Dec 27, 2012 (6:55 pm)
I'm glad I decided to review the comments here. My 2010 G37X which has 8 months to go on the lease has suffered the "the 7AT" horrors. I had the Reflash applied to the ECU /TCM in June 2012. It's better, but still quirky and produces similar responses at erratic times. It's the SOFTWARE for sure. JATCO makes the tranny. What's so curious is that of all the reviews (Consumers Reports, Edmunds, etc.... only a small article written in one of the Automotive magazines some 6 or 7 months ago, actually brought out the tranny issues. Anyway, Infiniti Dealer just called me to say that Infiniti is now offering an early termination (eat the last 8 months of the lease) provided I take a new Infiniti G or M... After reading this review, I am probably going to pass on the 2013 M37X. I you consult My37.com forum, a thread about the Tranny has thousands of posts. The frustration is mine or yours alone !!! I protested about the performance from day 2 of ownership. Only until this June, after 2 years of driving and complaining, did it become more tolerable. The 7AT ruins the car. All done for the mileage gains it provides. Even the District Manager relayed that to me. Although this offer is tempting and wouls allow me to trade up to an M, i may pass because the posts here are about 2011 or 2012s, but a recent post on My37.com indicated that a member just had a 2013 G37 as a loaner, and sadly reported the same lagging & hesitation. I gues they want you to go to lexus, Audi, or even a Buick (LaCross - that car has caught my eye)...