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DIY: Easy Way to Reset ECU without battery disconnect

Old Feb 16, 2012 | 03:26 PM
  #136  
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A mod or admin should update the first post with the correct instructions.

There's a difference between "within 3 seconds" and "wait 3 seconds" in step one. I bet that's why so many people were unable to get this to work.
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Old Feb 25, 2012 | 07:49 PM
  #137  
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Originally Posted by Mattster
im sure it wouldn't flood the car if you couldn't do it like 3 or 4 times right?
Not with a wired throttle, as you're not pumping gas in with each peddle push, as in the days of a carb.
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Old Feb 25, 2012 | 07:53 PM
  #138  
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Originally Posted by blackhawksfan81
A mod or admin should update the first post with the correct instructions.

There's a difference between "within 3 seconds" and "wait 3 seconds" in step one. I bet that's why so many people were unable to get this to work.
True, and there seems to be merit in warming the engine to normal operating temperature, and turning off the A/C, radio -all electrical. Don't press the brake, either. And use a watch or stopwatch because most folks can't estimate seconds, especially when under pressure to do so.
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Old Mar 2, 2012 | 11:46 PM
  #139  
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I did this the other day and it took me about 10 tries.

The problem most folks have is not waiting the full 7 seven seconds. I timed it with a second hand and when I stretched it to 8-9 seconds, it worked.
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Old Mar 27, 2012 | 02:29 PM
  #140  
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I was able to do this after several tries. For me, after the 7 second wait, I had to depress the gas pedal the entire time the SES light was blinking slow, then it started blinking fast. Does this procedure vary by vehicle year/model? Just from my reading, at the beginning of this thread is one procedure, then reading through the thread someone else had a procedure. Reading the FSM, it's a different procedure. I mean the first few steps are all the same, but after that they're different. I even did something completely different. I was just curious.
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Old May 29, 2012 | 04:37 AM
  #141  
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Easy Way to Reset ECU without battery disconnect in G37 - YouTube
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Old May 30, 2012 | 09:21 PM
  #142  
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Nice video, thanks!
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Old Jun 8, 2012 | 04:01 PM
  #143  
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Hi all,

I've just got a pre-owned 2010 G37 sedan and I feel the transmission lag.
If I have done the ECU reset, do I still need to do Accelerator Pedal Release Position Learning, Throttle Valve Closed Position Learning, and Idle Air Volume Learning (Throttle Position Learning) procedure also?
Thanks for the help.
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Old Jun 8, 2012 | 09:00 PM
  #144  
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Originally Posted by oas1s
Hi all,

I've just got a pre-owned 2010 G37 sedan and I feel the transmission lag.
If I have done the ECU reset, do I still need to do Accelerator Pedal Release Position Learning, Throttle Valve Closed Position Learning, and Idle Air Volume Learning (Throttle Position Learning) procedure also?
Thanks for the help.
Welcome to the forum, and G37 ownership!

Check the last 20 pages of this thread - there is a new ITB out that addresses the sluggish 7AT on the 20-11 models.

https://www.myg37.com/forums/g37-sed...reprogram.html
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Old Jun 21, 2012 | 11:29 AM
  #145  
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'09 G37 base at 15k miles....

I took a large analogue clock to the car and got this to work first time......
Unfortunately it then showed up EVERY complaint that is listed for my car here in the forums.
It's scheduled to go in to dealer on Monday for TSB updates and they are checking the TC and will replace it under warranty if necessary.
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Old Jun 21, 2012 | 01:34 PM
  #146  
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Thanks......just installed new CAI, so decided to reset the ECU.....got it on the first try...video helped a lot...
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Old Feb 6, 2013 | 01:46 AM
  #147  
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did this today, took a few tries but using a stopwatch helped tremendously.
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Old Feb 25, 2013 | 09:49 AM
  #148  
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Got it right the first time. Call it lucky... I guess

Great DYI after bolt-on mods! Thanks!!
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Old Mar 28, 2013 | 01:31 PM
  #149  
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Not to rain on anyone's parade, here, but is there any hard, empirical data to indicate that resetting the ECU does anything, at all? Again, not seat of the pants, as that's a useless measure of anything as subtle as this would be.

The main reason I ask, is that my understanding is that the ECU on this (or any modern car, for that matter) is continually modulating and updating the data it processes, based on current driving conditions. We're talking about milliseconds, and seconds worth of evolving data. It doesn't compile days, weeks & months worth of information. That would provide no advantage to the car's control systems.

Quite fundamentally, THAT is the whole reason that modern cars even have the digital ECU systems, so that the engine and associated systems can nearly instantaneously monitor what is happening, and adjust as needed.
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Old Mar 29, 2013 | 08:59 PM
  #150  
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Oliveview, good question. I've wondered the same. Infiniti has effectively stated the car learns how you drive, that implies more than a few seconds of data. Heck, I drive differently day to day, sometimes minute by minute. I don't want an average.
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