2009-2012 FX35/50 Shift Responsiveness Issues (New 7 Speed Fix Finally Out!!)

F

Fire0nic3FX

Member
JUST RELEASED YESTERDAY:

Summary of ITB12027: IF YOU CONFIRM One or more of these 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. NOTE: This is normal ASC (Adaptive Shift Control) operation that can be removed from normal drive mode, but will remain in sport mode. 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 information.



Finally the true 2nd Software Update is out
 
wow...that's sounds perfect to the tee. Where did you get this info....seems like we've been asking a few folks and it's been like pulling teeth to get this info! lol
 
same here but so far the dealer i go to compliment on the headlights and taillights, to a point where they ask if the headlights came with the fx when i bout it :.rofl:
 
edmarin said:
same here but so far the dealer i go to compliment on the headlights and taillights, to a point where they ask if the headlights came with the fx when i bout it :.rofl:
Click to expand...

I'm not sure if I would be comfortable having service done by a dealer that doesn't know what an oem FX looks like....



TapaTalkin'
 
The dealer shouldn't care about the TPMS. Just give them a heads up that you don't have them on.:top:


As to the TSB I'm going to call soon when I get a chance to schedule an appointment. This software issue has been annoying me lately lol.
 
Called my SA today and this TSB (ITB) is not showing up in their system yet. He will call me as soon as the software is available. The dealer is Tim Dahle Infiniti in Murray, UT if anyone cares. With that said, there are literally two or three FX's here in the SLC area That I have seen.
 
I searched online for this TSB and couldn't find it. It's hard to convince a dealer that it's legitimate without any reference to a document, invoice, or website.
 
I'm really not having any issues with mine. I had one of the early reflashes way back when.
I wonder if I have enough miles on my FX for these problems to show, I only have just under 30,000 miles on mine.
 
The mechanic I spoke to said all 7 speed transmissions have this problem and their all made equal with the same software, parts, etc. He said the customers that don't complain about it either:

1. Don't know exactly what to look for
2. Or simply just don't care enough to even bother noticing it.

If I drove your car I could point out to you Wayne lol.

I have yet to come across one that doesn't. The G37's are even worse than ours. I've driven many different loaner cars and they all do it.
 
Last edited:
yes the g37's are much worse, i use to remember all the loaners, it use to jerk forward and i thought it was normal
 
You must log in or register to reply here.
Back
Top