how long will it take for the comp to reset and is leaving it disconnected for too long bad?? thanks guys

 

like 3 hours.... will work, but if you can leave it overnight the better

 

Overnight is best.

 

Make sure you press the horn and put on the lights after you disconnect the battery...that will drain all the power from the car.

 

Regarding the reset of the ecu, of those of who have done it, do you have to reset the bose radio security code thereafter? Also, was your gas mileage compromised due to the ecu having to re-adapt itself to your driving style?

 

Anybody have any idea how long the ECU takes to adjust to your driving habits once you hook the battery up again? How do your driving habits immediately after reconnect affect the ECU?

 

Bump!

Anybody????

 

YES I just reset my ECU when i replaced my radio... although I didnt mean to reset it the car was disconnected for approx 45 min to an hour. After I reset it it was fully adapted to me after about 300 miles. because I have the MAF sensor problem now the car is even slower than before and the engine has more limits now. At first your car will be very slow after you reset it. The best way to accelerate is to slowly press the gas pedal harder and harder....dont just jam on it. you may want to do it when you have the least highway driving to do....your trip computer (not the whole odometer) will reset so you can see how many miles you've gone since the ECU reset.

 

Will disconnecting the battery on an 03 reset the ECU? Is there another process? thx

 

don't know about an 03 but i just put a Red top in and it got rid of my SES ... only took me 10 min. ... ses came back on after about 80 miles.

 

i hooked my battery back up this morning and now the blinkers don't work..i dont know whats up

 

3 areas to check: fuse, bulb or relay

 

So do you always have to re-adapt the car after an ECU reset? My Check engine light has been on for a long time anyway...ever since I got my y-pipe and SC put on.

 

yes the car will make you re adapt no way around it unless Nissan reprograms the ECU.

 

So I have to drive slow for awhile afterward?

 

I didn't have to reset bose radio.

My gas mileage was similar or same

 

I've heard few hundred miles

 

Thanks Ammi! Finally, someone answered!