Same procedure for most cars. The ECU in cars will "adjust" to driving habits, but it's not going to make a huge difference. Most people do it to try and clear out codes.
Resetting ECU?
Ok, so I was kind of tooling around the VELOSTER.ORG forum (who is responsible for maintaining that forum anyways? It's pretty bad over there) and I found this little gem. Well, if it is legit, then it could very well be a little gem.
Trying to see if there is any validity to this at all. Apparently, run the car up to normal operating temps, turn it off, take the ground cable off the battery, and press the brake pedal for however long it says. This will expel the remaining "juice" from the ECU. Reconnect the battery and drive for about 30 minutes in whatever fashion you wish.
This is supposed to reset the settings and curves and whatnot in the ECU.
I am fairly curious. Anyone know anything about this?
How To Reset Your E.c.u. - Hyundai Forums : Hyundai Forum
Trying to see if there is any validity to this at all. Apparently, run the car up to normal operating temps, turn it off, take the ground cable off the battery, and press the brake pedal for however long it says. This will expel the remaining "juice" from the ECU. Reconnect the battery and drive for about 30 minutes in whatever fashion you wish.
This is supposed to reset the settings and curves and whatnot in the ECU.
I am fairly curious. Anyone know anything about this?
How To Reset Your E.c.u. - Hyundai Forums : Hyundai Forum
1 - 14 of 14 Posts
Ya I think I posted the link over there I tested it and all it did for me is reset my adaptations so I could unlearn that crap 87 octane I tested for timing changes (93 is better by the way my timing monitoring show it) ya but anyways I would say that it does not adapt to aggressive driving really at least from what I noticed. Its still good for switching over to higher octane or more go faster parts.
Problem being... there are factory torque limiters set in the PCM... even if you are running race gas and don't have any pre-ignition issues you will cap out the limiters inside the PCM. We are working on fixing that but more on that later.
The ECU does not adjust to driving habits.
It has internal settings that depend upon sensors.
There is no sensor that gauges gasoline octane rating.
There is a sensor that detects knock/ping and the action is to retard the spark timing.
***
It has internal settings that depend upon sensors.
There is no sensor that gauges gasoline octane rating.
There is a sensor that detects knock/ping and the action is to retard the spark timing.
***
"Ding" winner! Its more of an adaptive/learned memory that determines the octane rating. From what I can tell if you fill up it is more aggressive with timing adjustments to determine the octane rating of the fuel in the tank. There are some neat tables in the PCM that I have not seen in other PCM's. What we have to address is the factory settings for peak torque or the distance covered over time calculations in the PCM. They are getting pretty good at holding back the power based on RPM and MPH over time.The ECU does not adjust to driving habits.
It has internal settings that depend upon sensors.
There is no sensor that gauges gasoline octane rating.
There is a sensor that detects knock/ping and the action is to retard the spark timing.
***
How are you supposed to expel the remaining juice on an A/T? I try holding down brake and stuff and it doesn't do anything. How are you supposed to use all the remaining charge if nothing will work after disconnecting battery?
The whole point of fuel injection for the last 40 years is to adjust the fuel delivery based upon octane and atmospheric conditions.
My previous 3 cars, plus the Sonata loaner and the VT all have that page in the owner's manual where they awkwardly explain how the learning throttle (and transmission) works. The Suzuki was the funniest because they tried to explain it with dance steps like a tango.
All of these cars have some sort of ECU and non-volatile memory. I doubt that disconnecting the battery has any affect on this part of the ECU programming. All cars will occasionally have a dead battery and the manufacturer knows this. The learning thing is just a mild adjustment to the throttle curve to match how you depress the accelerator.
There is no doubt that Hyundai is going to try to keep the VT motor limited to 200hp regardless of what you do to it. All Hyundais have a 100k mile drivetrain warranty - even the VT. The VT makes 125hp/l - that's more than a Porsche 911 or a Corvette. The 2014 Corvette only makes 74hp/l.
So yeah, there is going to be limits on the VT motor.
My previous 3 cars, plus the Sonata loaner and the VT all have that page in the owner's manual where they awkwardly explain how the learning throttle (and transmission) works. The Suzuki was the funniest because they tried to explain it with dance steps like a tango.
All of these cars have some sort of ECU and non-volatile memory. I doubt that disconnecting the battery has any affect on this part of the ECU programming. All cars will occasionally have a dead battery and the manufacturer knows this. The learning thing is just a mild adjustment to the throttle curve to match how you depress the accelerator.
There is no doubt that Hyundai is going to try to keep the VT motor limited to 200hp regardless of what you do to it. All Hyundais have a 100k mile drivetrain warranty - even the VT. The VT makes 125hp/l - that's more than a Porsche 911 or a Corvette. The 2014 Corvette only makes 74hp/l.
So yeah, there is going to be limits on the VT motor.
The whole point of fuel injection for the last 40 years is to adjust the fuel delivery based upon octane and atmospheric conditions.
My previous 3 cars, plus the Sonata loaner and the VT all have that page in the owner's manual where they awkwardly explain how the learning throttle (and transmission) works. The Suzuki was the funniest because they tried to explain it with dance steps like a tango.
All of these cars have some sort of ECU and non-volatile memory. I doubt that disconnecting the battery has any affect on this part of the ECU programming. All cars will occasionally have a dead battery and the manufacturer knows this. The learning thing is just a mild adjustment to the throttle curve to match how you depress the accelerator.
There is no doubt that Hyundai is going to try to keep the VT motor limited to 200hp regardless of what you do to it. All Hyundais have a 100k mile drivetrain warranty - even the VT. The VT makes 125hp/l - that's more than a Porsche 911 or a Corvette. The 2014 Corvette only makes 74hp/l.
So yeah, there is going to be limits on the VT motor.
My previous 3 cars, plus the Sonata loaner and the VT all have that page in the owner's manual where they awkwardly explain how the learning throttle (and transmission) works. The Suzuki was the funniest because they tried to explain it with dance steps like a tango.
All of these cars have some sort of ECU and non-volatile memory. I doubt that disconnecting the battery has any affect on this part of the ECU programming. All cars will occasionally have a dead battery and the manufacturer knows this. The learning thing is just a mild adjustment to the throttle curve to match how you depress the accelerator.
There is no doubt that Hyundai is going to try to keep the VT motor limited to 200hp regardless of what you do to it. All Hyundais have a 100k mile drivetrain warranty - even the VT. The VT makes 125hp/l - that's more than a Porsche 911 or a Corvette. The 2014 Corvette only makes 74hp/l.
So yeah, there is going to be limits on the VT motor.
it discharges the capacitors kinda like on some electronics when you unplug it and a light may remain on for just a second or two later till that last bit of juice is drained. So depressing the brake has the same effect or opening the door for example. kinda just help ensure it is fully discharged.How are you supposed to expel the remaining juice on an A/T? I try holding down brake and stuff and it doesn't do anything. How are you supposed to use all the remaining charge if nothing will work after disconnecting battery?
When I reset the ECU my VT Timing adaptations seem to change based on what I have seen. Like when I went from 87 to 93 I did a reset to see if it helped and I got more advance at WOT immediately. From there it re learned with 93 in the tank. I monitored this in the Torque app. WOT Pulls in different gears.The whole point of fuel injection for the last 40 years is to adjust the fuel delivery based upon octane and atmospheric conditions.
My previous 3 cars, plus the Sonata loaner and the VT all have that page in the owner's manual where they awkwardly explain how the learning throttle (and transmission) works. The Suzuki was the funniest because they tried to explain it with dance steps like a tango.
All of these cars have some sort of ECU and non-volatile memory. I doubt that disconnecting the battery has any affect on this part of the ECU programming. All cars will occasionally have a dead battery and the manufacturer knows this. The learning thing is just a mild adjustment to the throttle curve to match how you depress the accelerator.
There is no doubt that Hyundai is going to try to keep the VT motor limited to 200hp regardless of what you do to it. All Hyundais have a 100k mile drivetrain warranty - even the VT. The VT makes 125hp/l - that's more than a Porsche 911 or a Corvette. The 2014 Corvette only makes 74hp/l.
So yeah, there is going to be limits on the VT motor.
I just pull the negative cable from the battery for 15-20 min. Works fine for me.
OK. I did reset my ECU last night doing this, just didn't think it did because my CEL didn't go away (cleared that today). Guess those are stored in memory. Was able to tell the ECU reset when my Eco Coach got reset on the Hyundai website. Cool beans.I just pull the negative cable from the battery for 15-20 min. Works fine for me.
Yeah, CELs are not stored in the same memory as the AFR self trim settings.
1 - 14 of 14 Posts
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