Reset computer

Is there a way w/o disconnecting the battery.

 

...no...?

 

not really sure why you would want an alternative way? not like disconnecting the battery is difficult?

did it not work?

 

ECU is under the glove box.
You can always try unplugging the box.

But on modern vehicles, unplugging the ECU will not always clear stored codes, and even if it does, it won't pass smog until it has cleared all buffers, which can take 2 or 3 weeks of normal driving.

 

The installer lost the codes for my clarion and it could be a problem if I disconnect the battery. He entered the security code and did not write it in the book and kept no record at the dealership.

 

Going to have to figure it out sooner or later. That battery won't last forever. It's an '08 like mine, if it's still on the original battery, it's on borrowed time.

Why do you need to reset the ECU?

 

True... I remember the Kenwood deck in the Suburban I sold was something like "key on, hold "up" for 20 minutes, hold "down" for 1/2 second, read display, call Kenwood with reported numbers and receive code"