Viper it sounds like you should do it again with your car warmed up. the coldest i did mine was after i ran mine for like 5 minutes and i had no problems.

TC i do the same thing, mine comes on after like 2 weeks though so its not as big of a PITA

 

According to Hyundai, you need not turn on ignition, Nor depress break, NOR do you need to disconnect ANYTHING for 10 minutes. All that needs to happen is for you to disconnect your NEG terminal for 1 Minute

Procedure as follows:
Disconnect NEG Terminal 1 minute
Reconnect NEG, and turn on vehical.
Drive for 10 miles.
Advise customer his/her car may run differently for 10 miles

This is the ECU Reset, no more no less.

When you reset your ECU, your Emmissions Control is set to defaults. This means you get full potential and the computer has less control over your emissions. IE... you get more power.

The computer then learns your system and sets everything to the way the computer should be set.

 

Nice.

Has anyone CONFIRMED that you can reset the ECU by pulling the ECU fuse? I tried it when I had my CEL 2 weeks ago but didn't get it to work.

 

where is the fuse for the ecu?

 

In the fuse box under the hood.

 

I know this is really old but too add on, there is an ECU fuse on the drivers side to the left of the clutch. you might need to pull that one also.

 

No, you don't.

Open the BIG fuze box under the hood.

Pull up on the big white plastic piece named "POWER CONNECTOR".

Then go turn your ignition to the ON position, then back off.

Your ECU is now reset.

 

I know this is an old post. Resetting the ecu does make the car run better, but the reason the engine changes its way of running is because it is compensating for wear in the engine. The same reason your car barely starts when you take off your induction piping, there is no pressure in the system and the computer has to compensate. With that i would like to clarify the myth of it adapting to the way you drive. That may only be valid for automatic cars, taking the revs higher.

 

^^ The ECU is supposed to maintain emissions control as well. If you never full throttle, it does not know how to compensate until then. In a small way it does learn, but not to the extent that some would make it seem. I have noticed my car has more power when it's running normally after an ecu reset.

<div class='quotetop'>QUOTE (REDZMAN @ Feb 22 2007, 01:59 AM) <{POST_SNAPBACK}></div><div class='quotemain'>No, you don't.

Open the BIG fuze box under the hood.

Pull up on the big white plastic piece named "POWER CONNECTOR".

Then go turn your ignition to the ON position, then back off.

Your ECU is now reset.</div>

Wow! What a novel idea!! I didn't think about that. It would eliminate the need for me to remove my battery terminal which means my capacitor never needs to be discharged and recharged durring a ECU reset. It can be risky for me because capacitors can blow up when you fail to charge them before giving them full power. Awesome fing02.gif Thanks Z!

 

^^I know.. I was pulling my battery terminal, grabbing a spare light bulb and recharging my capacitor. It was a PITA. I thought I knew how to reset my ECU. I have to give credit where credit is due though. Old post or not, mrrock revived it and I am appreciative because I never saw that last post.