2010 FX35 AWD: Poor automatic transmission performance - Infiniti FX Forum : FX35, FX45 and FX50 Forums
Reply
 
LinkBack Thread Tools
post #1 of 168 (permalink) Old 03-11-2010, 10:05 PM Thread Starter
Member
 
Join Date: Feb 2010
Location: Central Ohio
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
2010 FX35 AWD: Poor automatic transmission performance

I've put over 3000 miles on my new 2010 FX35 AWD since I bought it over a month ago, and the most glaring, frustrating, and disappointing aspect of this high-priced vehicle I've found so far is the miserable behavior and performance characteristics of its automatic transmission when operated in either the "D" [Drive] or "SD" [Sport Drive] modes.

Now that I have your attention, please note that I have spent a considerable amount of time combing through the archived threads here and elsewhere on the Web regarding this issue before I decided to finally post my concerns and comments here, so please spare me any terse, snarky, and dismissive replies along the lines of "This topic has been discussed in other threads..." as if my questions and concerns regarding this matter are as trivial as perennial questions about the best oils and tires. The fact is that a number of people have similarly complained of many of the problems I'm referring to here, yet as serious as this topic is, this site has yet to create and dedicate a "Sticky" thread regarding this apparently well known problem and design flaw.

So, you may ask... what am I referring to here with regard to the 2010 FX35 AWD's automatic transmission? Many of you undoubtedly know exactly what I'm talking about, but for the sake of clarity, allow me to briefly describe what's greatly bothering me about the behavior and performance of this vehicle's 7-speed automatic transmission...

1) Whether the vehicle is in D or DS mode, gently and smoothly depressing the gas peddle, either from a dead stop, or at very low speeds, typically results in the automatic transmission (AT) inappropriately and almost immediately upshifting into higher gears, which in turn results in a totally inappropriate and potentially dangerous flat-spot in which the power quickly fades, bogs down, and the engine lugs. It's as if gently applying the gas tells the engine and tranny to bog-down and crap-out, rather than waking up and moving! Alternatively, one can instead try to overcome this behavior by more aggressively stomping on the gas pedal, but this will often result in a more brief lag, followed by a sudden surge in power as the tranny thinks, hesitates, downshifts, and then the vehicle bolts forward! WTF?!

2) Once you manage to get the vehicle moving forward while operating the AT (either in the D or DS modes), the AT will then quickly begin inappropriately UPSHIFTING and STEPPING through (within mere seconds of time) to higher gears! Indeed, by the time one is traveling at a mere 30 mph, the f**king AT has up-shifted all the way to 5th or higher gear, and the resulting sensation of driving this expensive vehicle is simply miserable and totally uninspiring! The vehicle stumbles, the power bogs down and fades, and it can't get out of the way of itself unless you stomp on the gas peddle! Hello?

3) When starting the FX35 out from a dead stop, and you then begin gently applying throttle (you know, like you would expect from a normally behaving car), if you would like to discover just how inappropriately far the FX has upshifted through its 7 forward gears while you're lumbering along at ~35 mph, do the following before you start out--> Move the shift knob to the left, which will place the vehicle in DS mode. Then, once you begin gently pushing on the gas pedal and you feel the tranny rapidly upshifting, you can either count how many gears you feel it shifting... or you can simply pull back on the shift knob, which will drop you to the next lowest gear, which will be graphically displayed on the screen in front of you. I did just this tonight on my way home from work after I reached ~35 mph from a dead stop in DS mode, and the display read 5, which means that the tranny was actually in 6th gear before I pulled back on the shifter!

4) In DS mode, if I aggressively get on the throttle, the vehicle will wind-out the gears more, but once I hit ~ 55-65 mph, the tranny will then remain stuck at a higher gear, the RPM's will go over 4500-5000, and it won't upshift until I continue to stomp on the gas some more! Or, if I then want it to shift up to the next gear, I must either flick the shift lever to the right (D mode) which will then take over, or I can manually upshift while remaining in DS mode.

5) Quite unlike what some others have described and posted here and elsewhere, in which they feel that the signs and symptoms I've described here are only intermittent, I've found these problems to be constant and easily demonstrated. Indeed, I've raised these concerns with my local Infiniti dealer, and I was told that my 2010 FX35 AWD is not currently listed as a vehicle that falls within those that require a recommended re-flash of its ECU, but I was told that if it was, such a re-flash would be a permanent change to the ECU, and if I didn't like the results, I would have to live with them.

In summary, I would like to strongly suggest that the moderators of Infinitifx.org create a "Sticky" thread regarding this rather widely talked about, but currently uncategorized and unfocused issue with the FX's automatic transmission problems, in which all members and visitors alike may easily find, review, share, and respond to these glaring problems with the AT, rather than having to spend many hours trying to sift through a multitude of online reports in order to begin getting at the truth of the matter.

I thank each and every one of you who've taken the time to read this!
Ghost Hunter is offline  
Sponsored Links
Advertisement
 
post #2 of 168 (permalink) Old 03-11-2010, 11:06 PM
Senior Member
 
DatMan's Avatar
 
Join Date: Nov 2007
Location: Ottawa, ON
Posts: 10,716
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Re: 2010 FX35 AWD: Poor automatic transmission performance

Don't have a 2nd gen FX so can't really say anything either way other than that almost everyone with an 09 that got the tranny reflash said it was like driving a new car... in a good way... but the '10 FX should have come from the factory with the new transmission algorithms so a reflash should not be necessary... as an experiment, why not get the reflash anyways and let us know what you think? If there was a difference or no difference? Even though it's IRREVERSIBLE I haven't heard a single negative comment about the reflash yet...


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2007 FX35 AWD Touring - GARMIN GVN-53 NAV mod, NAV-TV iPod music and video, PARROT MK6100, VIPER 5901 w/ SMARTSTART & GPS Tracking, Strong Strut STB, MD 5/16" Copper Iso Thermal, LMS intake w/ 3" K&N Cone, BC RACING Coilovers, GT SPEC Ladder Brace, STOPTECH SS Lines, 20" AVARUS AV1 w/ BFG KDW/2's, HAWK HPS Street Pads, 6K HIDs and 5K Fogs, LED lighting everywhere, Sport Pedals with ebrake, Escutcheon...
DatMan is offline  
post #3 of 168 (permalink) Old 03-12-2010, 06:25 AM
Senior Member
 
johnmax's Avatar
 
Join Date: Jan 2004
Location: Long Island, NY
Posts: 10,641
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Send a message via AIM to johnmax
Re: 2010 FX35 AWD: Poor automatic transmission performance

I dont see any need for a sticky topic. Your experience does not seem typical of '10 owners. There are maybe a few threads here related to the 2nd gen tranny- no widespread epidemic. Perhaps if this became a major issue, then maybe. But pretty much everyone who has complained was satisfied after their tranny upgrade. Did you notice this behavior on your test drive?

As far as being in a high hear at lower speeds, yes many cars unfortunately do this nowadays. Its to try and get better fuel economy. If you want it to shift aggressively, you have to be all over the gas, or put it into manual and do it yourself (which is the reason there is a manual mode).

Maybe something is wrong with your FX that your dealer is not competent enough to find out (more likely). Maybe find another dealer to check it, or get involved with Infiniti Corporate.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

03 FX45 Tech/Premium Liquid Copper Brick/Black, Viper 791XV alarm/remote start/GPS tracking, Nav-TV, XM, nav while driving mod, custom no nag nav mod, backup cam while driving mod, Stillen STB, Custom S550 LED mirror covers, Autolumination LED bulbs, Falken Ziex STZ/04s, Nissan Ipod interface w/80gig video, ORG sticker
johnmax is offline  
 
post #4 of 168 (permalink) Old 03-12-2010, 06:56 AM
Senior Member
 
GixxerSteve's Avatar
 
Join Date: Dec 2006
Location: Tucson, AZ
Posts: 4,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Re: 2010 FX35 AWD: Poor automatic transmission performance

Quote:
Originally Posted by Ghost Hunter
In summary, I would like to strongly suggest that the moderators of Infinitifx.org create a "Sticky" thread regarding this rather widely talked about, but currently uncategorized and unfocused issue with the FX's automatic transmission problems, in which all members and visitors alike may easily find, review, share, and respond to these glaring problems with the AT, rather than having to spend many hours trying to sift through a multitude of online reports in order to begin getting at the truth of the matter.
This topic has already been discussed in other threads.................sorry, I couldn't help myself.

Ghost, I understand the frustration and, likely, anger you are feeling about the transmission problem on your new FX. I'd be pissed too if I were in your shoes. But even though the finicky 7 speed tranny has been discussed here a few times (I wouldn't go as far to say that it is widely discussed), I don't think its an epidemic that we need to create a sticky for. We've had maybe 5 or 10 members mention complaints about their transmissions, and then about half of them got the reflash and said things were better. I have to question the motive behind suggesting that we create a sticky on this topic -- it seems that if someone owned an FX and felt that they had a problem with their transmission, they would come here and search for threads about the issue. I somehow don't see people spending many hours searching through our multitude of topics in order to find existing threads. And if it is as "widely talked about" as you claim it is, then people should have no trouble finding the threads about it because they would be all over the place. The only logical purpose served by creating a sticky about a transmission problem that maybe 10 people have complained about is so that everyone else can read about it and thereby incite rioting in the streets. That was your aim, no? Your freudian slip was that you referred to the transmission problems as the "truth of the matter".

"You lose! Good day, sir!"

Current: 2006 Toyota 4Runner Sport V6 | White | 2WD |
Previous: 2006 Titan LE CC | Smoke | 2WD |
Previous: 2004 FX35 | D. Graphite | RWD | Sport | 20" EXE Konkave | Yoko Parada Spec-X | MD 1/2" Iso Thermal | +2 | Clear Tails | Bat Overlays | S/S Brake Lines | Strong Strut STB |
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
GixxerSteve is offline  
post #5 of 168 (permalink) Old 03-12-2010, 03:19 PM
Junior Member
 
Join Date: Feb 2010
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Re: 2010 FX35 AWD: Poor automatic transmission performance

I don't have any of those problems with my 2010 FX. Did you not notice this when you test drove the car? The primary reason that I chose the FX was the way it drove and looked as compared to the competition, and I tested them all. The fact that the FX was the least practical in terms of cargo space but I still went with it speaks a lot about how much I love the drive and the looks.
tk76 is offline  
post #6 of 168 (permalink) Old 03-12-2010, 09:06 PM
Senior Member
 
GJBenn85's Avatar
 
Join Date: Nov 2006
Location: East Coast
Posts: 2,054
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Re: 2010 FX35 AWD: Poor automatic transmission performance

What you described is exactly what I experienced with a brand new G37 sedan. Unfortunately, I think the average person will find the horrendous transmission to be perfectly acceptable.

'10 QX56 - Current. $63k MSRP and no compass...?
'06 FX45 - Former
'05 FX35 - Former
GJBenn85 is offline  
post #7 of 168 (permalink) Old 03-12-2010, 11:11 PM Thread Starter
Member
 
Join Date: Feb 2010
Location: Central Ohio
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Re: 2010 FX35 AWD: Poor automatic transmission performance

Thanks to all of you for your comments thus far. In response, I offer the following thoughts:

1) To those of you who've said that this problem is uncommon and not widely reported, I would point out that it has been a subject of interest on YouTube: http://www.youtube.com/watch?v=MM2qBMdqq8U

2) I did indeed notice the behaviors I've described when I test-drove a 2010 FX35 AWD pretty aggressively at times (it was a demo, and not the car I bought), and when I raised this question with the dealership, I was told not to worry because the vehicle's computerized adaptive shift-control logic would need some time to adjust to my driving habits. That sounded like a very reasonable and reassuring answer at the time. Meanwhile, the vehicle that I purchased off the lot (which I also briefly test-drove) had only 12 miles on the odometer, so I babied it and followed Infiniti's recommended engine break-in procedures for the first 1200 miles (i.e, avoid running the RPM's much above 4000; avoid cruising at a set-speed for prolonged periods; avoid aggressive braking, etc.). Once I reached 1200 miles, I had the oil changed and I then began driving the vehicle and getting on the throttle and manually shifting the tranny in more in a spirited manner, but nothing outrageous.

3) When I brought my FX35 back to the dealership for an oil change at 1200 miles, I mentioned my complaints about the behavior of the AT, and after the service manager, as well as a master technician, test-drove the vehicle, they pretty much agreed with my assessment. At first they told me what I already knew, which is that Infiniti has designed the shift-points of the AT with the goal of maximizing fuel economy by keeping the engine's RPM's as low as possible. That said, they told me that there was a Technical Service Bulletin (TSB) for an ECU re-flash on 2009 models, but it only involved correcting a recognized problem with abrupt and rough DOWNSHIFTING of the AT. Infiniti has since corrected this DOWNSHIFTING problem with the 2010 FX35 AWD, and my vehicle's VIN # doesn't show up as needing this. Indeed, I have no complaints with how the vehicle downshifts. Rather, the problem is how the AT UPSHIFTS, and so far as I've been told, there currently is no firmware upgrade that addresses this UPSHIFTING issue, but Infiniti is most likely aware of the problem and they will only be motivated to do something about it until a sufficient number of complaints are registered.

4) It seems that some of you may be so brand-loyal that you wear blinders, and you are reluctant to objectively criticize this vehicle in areas where such criticisms are well deserved. I'm enjoying my new FX35 AWD for the most part, but with a luxury vehicle costing more than $50,000.00, I shouldn't find myself missing and longing for the AT performance of a vehicle costing a mere fraction of this price. If Infiniti soon fixes my gripes, I will totally love this vehicle and be as happy as a pig in mud.

5) Other problems I've had so far with my 2010 FX35 AWD? Well, the vehicle's Navigation/Audio module was defective with regard to BlueTooth. It repeatedly failed to mate with a variety of cell phones, and the dealer eventually diagnosed the problem as a defective audio control module, so they ordered a new one. When it was installed, the new module correctly paired with the phones, but then they found that it had no audio output signal, so they've ordered yet another audio control module, which has yet to arrive and be installed, but I'm hoping for the best...
Ghost Hunter is offline  
post #8 of 168 (permalink) Old 03-13-2010, 01:58 AM
Senior Member
 
DatMan's Avatar
 
Join Date: Nov 2007
Location: Ottawa, ON
Posts: 10,716
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Re: 2010 FX35 AWD: Poor automatic transmission performance

Quote:
Originally Posted by Ghost Hunter
2) I did indeed notice the behaviors I've described when I test-drove a 2010 FX35 AWD pretty aggressively at times (it was a demo, and not the car I bought), and when I raised this question with the dealership, I was told not to worry because the vehicle's computerized adaptive shift-control logic would need some time to adjust to my driving habits. That sounded like a very reasonable and reassuring answer at the time. Meanwhile, the vehicle that I purchased off the lot (which I also briefly test-drove) had only 12 miles on the odometer, so I babied it and followed Infiniti's recommended engine break-in procedures for the first 1200 miles (i.e, avoid running the RPM's much above 4000; avoid cruising at a set-speed for prolonged periods; avoid aggressive braking, etc.). Once I reached 1200 miles, I had the oil changed and I then began driving the vehicle and getting on the throttle and manually shifting the tranny in more in a spirited manner, but nothing outrageous.
I wonder if this might have something to do with your problems... if you babied the FX, it learned to run at a VERY conservative mode... there's a pedal dance in the 1st gen to reset the ECU... wonder if it's the same on the 2nd Gen FX or if there's a specific way for the 2nd gens to do this as well... possibly disconnecting the battery for 10 minutes or more should also reset the ECU but would erase seat memory and radio presets (although I think I heard something about this not completely wiping the info learned by the ECU somewhere but forget where)... I would try something like this before trying to reflash the tranny...

Quote:
Originally Posted by Ghost Hunter
5) Other problems I've had so far with my 2010 FX35 AWD? Well, the vehicle's Navigation/Audio module was defective with regard to BlueTooth. It repeatedly failed to mate with a variety of cell phones, and the dealer eventually diagnosed the problem as a defective audio control module, so they ordered a new one. When it was installed, the new module correctly paired with the phones, but then they found that it had no audio output signal, so they've ordered yet another audio control module, which has yet to arrive and be installed, but I'm hoping for the best...
I've read about some quality control problems with the 09 FX but I think this is the first quality complaint I've heard about the '10 (although there is still a lot of time for more problems to come in)... hope you get it fixed PROPERLY and soon!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2007 FX35 AWD Touring - GARMIN GVN-53 NAV mod, NAV-TV iPod music and video, PARROT MK6100, VIPER 5901 w/ SMARTSTART & GPS Tracking, Strong Strut STB, MD 5/16" Copper Iso Thermal, LMS intake w/ 3" K&N Cone, BC RACING Coilovers, GT SPEC Ladder Brace, STOPTECH SS Lines, 20" AVARUS AV1 w/ BFG KDW/2's, HAWK HPS Street Pads, 6K HIDs and 5K Fogs, LED lighting everywhere, Sport Pedals with ebrake, Escutcheon...
DatMan is offline  
post #9 of 168 (permalink) Old 03-13-2010, 07:41 AM
Senior Member
 
Paid4c4's Avatar
 
Join Date: Aug 2008
Location: Northern Kentucky
Posts: 431
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Re: 2010 FX35 AWD: Poor automatic transmission performance

We have the 7 speed in our 09 which I had reflashed when it became available. I guess I've gotten use to the transmission because I don't notice the problems listed in the thread. I waited several days after I read this tread so I could pay attention to the transmission and still don't have any complaints with the shifting. Is there any way a 2010 model would need to be reflashed? I hope you get it straightened out.
Bill

2009 FX35, Blue Slate Ext, Wheat Int, Touring, Premium, Nav Packages, Splash Guards, Cargo Protector and organizer, Illuminated kick plates, matching tint on front windows, matching door moldings, Bumper Guard, 18 OEM Wheels with Blizzacks, OEM Rubber floor mats, K&N Air Filters.
2003 50th Anniversary drop top Corvette
1959 Ford Sunliner drop top show queen
Paid4c4 is offline  
post #10 of 168 (permalink) Old 03-13-2010, 07:51 AM
Member
 
Join Date: Nov 2005
Location: Brooklyn, NY
Posts: 74
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Re: 2010 FX35 AWD: Poor automatic transmission performance

I have the '09 fx and I did have some issues with tranny and rough down shifting. I had the tranny relflash and it was better. I have some of the issues that you have in terms of a sense of bogging under certain conditions but not under most conditions. I just assumed that it was a byproduct of an attempt at fuel savings. I think there is room for improvement in the tranny programming but I wouldnt say that overall it has ruined my experience with the fx. Overall I am much happier than my previous FX which did not have these tranny issues.

'09 FX 35 Blue Slate, Premium, Navigation.

Previous: '05 FX 35 Saphire, Sport, Sirius
begawk1 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Infiniti FX Forum : FX35, FX45 and FX50 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



  Similar Threads
Thread Thread Starter Forum Replies Last Post
Automatic Transmission Fluid Maintenance Schedule Chedman13 1st Gen (2003-2008) 24 05-23-2017 09:04 PM
Best performance 18" tire (circa 2010) jbrasure Suspension, Brakes, Tires, and Rims 11 10-06-2010 08:52 AM
05 FX35 Transmission performance dashojos 1st Gen (2003-2008) 10 01-19-2010 06:04 PM
How is the 2010 Transmission? jlegault General Chat 5 12-21-2009 12:45 PM
Automatic transmission and differential fluid maintenance FXLENT 1st Gen (2003-2008) 4 02-27-2005 09:09 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome