7 Speed Transmission Re-Flash

S51ckRide said:
rijc99 - I also felt the dialing back performance effect of the reflash but I wasn't sure if it was just in my head. I was afraid that was going to happen when I took my car in, but the jerkiness of the shifting started to get annoying in traffic.

Maybe at one of the future meets people can compare flashed and non-flashed acceleration times. I'm hoping this can be remedied again when some tuners start offering some ECU upgrades.
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Yep, we should arrange a meet up soon.
 
Quick question: (I own an 09 FX50)
The jerkiness everyone keeps on talking about BEFORE the re-flash, is this when the transmission is in manual mode? If it is, I have gotten that several times when I ease off the gas pedal (in manual mode). I assume the re-flash fixes this problem?

Other than that, I don't recall having any other issues in any other transmission modes.
 
I thought 2010s came with the new programming.

If you are in So.Cal you can try my car to see if you like the new programming if you don't have it. I personally regret doing the reflash.
 
Well when I bought the car it had a problem with the air bag sensor. So they worked on the car. I noticed that all my stations were erased and my car started to do that. Bofore I didn't have this problem.

---------- Post added at 06:19 PM ---------- Previous post was at 06:16 PM ----------

Where in S Cali do you live?
 
Guanche01 said:
Quick question: (I own an 09 FX50)
The jerkiness everyone keeps on talking about BEFORE the re-flash, is this when the transmission is in manual mode? If it is, I have gotten that several times when I ease off the gas pedal (in manual mode). I assume the re-flash fixes this problem?

Other than that, I don't recall having any other issues in any other transmission modes.
Click to expand...


No, what you're describing sounds normal. In sport mode when you slow down, the transmission down-shifts itself. This down-shift is accompanied by rev-matching. That is what you are describing. It is more apparent if you slow aggressively while in sport mode.

What I was experiencing prior to (and on occasion, after) the re-flash is every once in a while, crawling through traffic if I get on the gas to start going the transmission forgets what gear its supposed to be in and allows the car to rev for a second prior to dropping into gear. This is accompanied by a jerk which also feels like being gently rear ended.

I still get this sometimes but not as often. BUT, my car definitely does not shift as crisply nor as fast after the re-flash. Also, the initial throttle response/up take has been tuned down. The car feels smoother because the throttle reaction is slower so the shifts are softer. Prior to the re-flash, if I jump in to my LX470, the LX feels slow to respond. But now, the LX's throttle feels jumpy.

Overall, if I can, I would go back to the original programming.

---------- Post added at 06:41 PM ---------- Previous post was at 06:26 PM ----------
New Guy said:
Well when I bought the car it had a problem with the air bag sensor. So they worked on the car. I noticed that all my stations were erased and my car started to do that. Bofore I didn't have this problem.

---------- Post added at 06:19 PM ---------- Previous post was at 06:16 PM ----------

Where in S Cali do you live?
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North OC. Fullerton/Brea. But work in Santa Ana/Tustin area.
 
I have a 2010 bought in March. I haven't been back to the dealer, but what I am experiencing seems to fit in here. I would say it happens 85% of the time. When accelerating it acts like it wants to stay in a lower gear for longer then it should, almost like it wants more gas. I'm going to bring this up to my dealer when I bring it in, I just want to know if any other 2010's are experiencing the same thing.
 
2009 FX 7 Speed Transmission Reflash Update

So when I was in for my 30K serivce yesterday, the advisor and tech mentioned that I don't have the transmission reflash update for the 7 speed automatic transmission. I thought since mine is a later build date it would have it, but it doesn't. So anyways I'm going back in next Monday for the reflash as the advisor said I needed it. I thought the transmission shifting was fine, but I guess not.

Anyways I was wondering if you guys think the update is worth it or not? Do you feel a difference. I've read on here that some say its worse afterwards. Like it makes the car feel slower than before to prevent fast downshifting or something.

Now that the tech mentioned it, I do notice a slight jerk and rpm jump when stopping from 40mph to 0mph. Sometimes I have to give it a lot of gas to get up a hill too, as if the car doesn't want to downshift on time unless I manually downshift it.
 
I have a 2010 model and i feel a little bump when coming to a stop and mine also shifts into too high of a gear too soon and has trouble up hills. Did all 2010s come with the reflash done or do i need to get mine checked also?
 
Yup, all 2010's come with the update. Only the 2009's come without it. I guess they still haven't solved this on the 2010 model's programming either.
 
I don't like the shift in gear when slowing to a stop, not jarring or anything, but it's far from a smooth downshift.
 
Thanks for the info Gee35FX! I'm going to report back to you guys when I get it done myself and see if I'm able to notice a difference.
 
As said earlier in the thread, no it does not apply to 2010-2012 models. They already come with this transmission software update.
 
I have my FX35 2009 re-flashed couple days ago. I had to take it to dealer because suddently the transmission start to have abrupt downshift. Few times the downshift was too hard that I thought someone hit me at the back.

Now after the re-flash seams more smooth so far. Also noticed higher RPMs compared with certain speed before re-flash.
 
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