Computer Reset - When is it necessary?

[netsomnia]

Is it necessary to reset the computer by removing the battery terminal after every attempt to fix a problem? For example, after a red light and fixing the thermostat or water pump or after a stuck blue light and check engine and removing air pockets in coolant system?

[RningOnFumes]

No it isn't necessary for all occasions.

Actually I would personally do it only on two occasions:

1. To reset the computer if someone has driven the car other than me and I need the car to re-learn my driving style.

2. Part of trouble shooting a check engine code. I pull the code(s) then reset either by the OBD2 reader or the battery, whichever is available. If the same code comes up, I know it's not a fluke and I have to address the code.

3. Only as a last resort if I can't figure out a problem so the car resets.

I really only do 1 and 2....I don't remember the last time I did number 3.