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Infiniti FX35 Transmission Problems

48 messages,  Last post on Apr 30, 2012 at 5:43 PM

You are in the Infiniti FX35 FX45 FX50 Forum.

What is this discussion about? Infiniti FX35, Infiniti FX45, SUV

Messages Page 2 of 6

#6 of 48 2009 FX35 TRANSMISSION by rickydean

Dec 28, 2009 (6:00 am)

I bought a fx35 in October 2009. The 7-speed transmission shifts constantly. It gets up to 7th gear by 40 mph. When you come to a hill at 40mph it labors unless you downshift two gears to 5th. When you take you foot off the gas the transmission pulls back because it is in a higher gear then it should be. The dealer says it has the software patch that others said fixed the 3rd/4th gear. He also said others have complained to infiniti and they are working on it. Are others having this problem? Any solutions?

#7 of 48 Re: 2009 FX35 TRANSMISSION [rickydean] by jrphilfan

Jan 29, 2010 (12:42 pm)

Replying to: rickydean (Dec 28, 2009 6:00 am)
Yes...same issue here. Transmission flash version is current and I still hate the 7 speed programming and gear ratios. Problem does not seem to appear consistently either...some days are better than others. Only way around this (at least for me so far) is to drive it in the manual "Drive Sport" (DS) mode. At least I can shift up and down into gears that I know are more appropriate for the road and terrain. I haven't noticed too much of a hit in gas mileage when driving in DS, although it definitely isn't as good as in regular "D" drive mode or with cruise control. I really hope they figure this out. To be clear, I know that the 7 speed tranny takes some getting used to, but this seems so way off. Why aren't the G37 drivers seeing this issue? Don't they have the same 7 speed tranny????

#8 of 48 Re: 2009 FX35 TRANSMISSION [rickydean] by dirokol

Feb 05, 2010 (7:46 pm)

Replying to: rickydean (Dec 28, 2009 6:00 am)
Just came from dealership. Bought 2010 FX35 and can't get used to a new transmission. Had 2004 FX35 AWD and it was much smoother ride. New FX constantly gives me a pull back(between 30-15 mph.) when i take my foot off gas. Had to bring car to dealership to check my car. Was told that there is nothing wrong with it, and it can't be reflash since its 2010 model.
Drives me absolutely crazy. Will go to a different dealership.

#9 of 48 Filed Lemon Law Claim for 2009 FX35 by jbaby79

May 05, 2010 (5:29 pm)

I've been dealing with this problem for about a year now. I've had the tranny reflashed as well as ECM. None of these things worked. I just filed a lemon law claim in Georgia. I'll post on here what the outcome is. If Infiniti doesn't do anything about it, I'll be trading it in for an MDX.

#10 of 48 Re: 2009 FX35 TRANSMISSION [jrphilfan] by aed1

May 14, 2010 (9:52 am)

Replying to: jrphilfan (Jan 29, 2010 12:42 pm)
I have a 2009 G37S. The 7 speed auto transmission is driving me crazy. I have all the same complaints - jerky shifting in low gears, hesitation when accelerating. I don't like the gear ratios - it's constantly shifting. Had the same car in an 04 that was great - 5 speed auto transmission - no problems.

#11 of 48 Re: 2009 FX35 TRANSMISSION [dirokol] by classy64

Oct 03, 2010 (7:06 pm)

Replying to: dirokol (Feb 05, 2010 7:46 pm)
I'm experiencing a lag in shifting in low gears also. I'm also experiencing a fluttering noise when I excelerate. Took it to the dealer (for the flutter) and they said it is normal. It is driving me crazy. I had a 2007 FX35 and it never made this type of noice. The mechanic said it's a differen model than the 2007 and that's just the way it is. I can't believe that Infiniti would design a luxury car that would make that kind of noise and call it normal, this car should pur like a kitten. I had a friend take a look and he said it was something in the manifold. Another friend suggests (by listening only) that the spark plugs are not firing up properly and not sending the right fuel mixture to the engine. He is going to pull the plugs this week to see if that is the problem.
 
Anyone else experiencing a fluttering noise. I will keep you posted on my results.

#12 of 48 Re: 2009 FX35 TRANSMISSION [classy64] by classy64

Oct 11, 2010 (6:39 pm)

Replying to: classy64 (Oct 03, 2010 7:06 pm)
Well, my friend pulled the spark plugs, gap is proper spacing, so that's not the problem. I took it back to the dealer, they still didnt find anything and said again that it is normal. I had them take me for a test drive in another 2010 FX35 and to my surprise, it too had the flutter. I also had them check the shift ratio for the lag in shifting. As far as the transmission/shifting, they said that it is a 7 gear shift which is different from the previousl FX35's (5 gears) and that it is going to take some time getting use to. He said that I should look to see if Infiniti will have a recall, and said that if they do, it will be a software patch. I sure hope enough people compalin about it that they will do something about it. I can't believe I didnt notice the noise when I took the car for a test drive before buying.

#13 of 48 Re: 2009 FX35 TRANSMISSION [classy64] by jbaby79

Oct 15, 2010 (6:43 am)

Replying to: classy64 (Oct 11, 2010 6:39 pm)
I had all the same issues you did and I just recently won my lemon law claim on my 2009 FX35. I'll be receiving a 2010 FX35, which I already test drove and didn't have the same transmission issues.
 
Like you said, the more people who complain and voice their concern the faster they will try to resolve this issue.

#14 of 48 Re: Should I buy a 2007 FX35 to replace a 2004 SRX? [msfur] by plaaaaane

Oct 27, 2010 (6:08 pm)

Replying to: msfur (Oct 24, 2009 5:24 pm)
I've avoided auto trannys most of my life due to the feeling of them shifting, hunting, lunging and lurching. With a wife hating her '06 Highlander Ltd. seats, she got the new FX35 2WD in FL exactly 30 days ago, and we traded in my 6 speed Sentra Spec V.
 
I inherited the Highlander as the hauling vehicle.... what is incredibly the worst shifting vehicle I have ever driven. It's like driving a 1000 gallon barrel of water 3/4 full. Barely tolerable... see all complaints in opening sentence. Then magnify.
 
On the other hand, we can't even feel when the '10 FX shifts. Lucky us for once, perhaps, but she loves it and the tranny really impresses me. Drive it yourself and see how it feels. It will probably be like that the rest of its' life, and you too may really like it, but only you can tell. [PS- I thought the MDX nice too and in my opinion the seats had a comfort edge, the ride was slightly better (not as firm) but it was just too big for what we wanted, worried about eventual tranny failure and wasn't priced as well.]

#15 of 48 2010 FX35 with Trans Problems by eidan

Nov 14, 2010 (11:38 pm)

Hi Guys,
Any updates on this? I got a new 2010 FX35 back in May and am experiencing the same problem with my gear box. It usually happened on low speeds 2-3 gears. Yesterday it did something it didn't do before which was stuttering like it was stuck on a gear or trying to shift into a gear repeatedly.
 
I just cannot believe infiniti will release a transmission like that without doing some serious testing.... It's absolutely insane! This is my 3rd Infiniti since 2007. I had a 2007 FX35 and a 2008 G35. Never had any problems with them. I am so disappointed. Did I mention I took it to my dealer here in San Diego right after I got it, reported the problem, and was told this is how the car behaves... Thinking of writing a letter to Infiniti USA. Keep me updated please! Thanks.

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