eliastfk

Is there any way to reset my ecu where i wont end up needing my stereo code?

turbo510

What do you mean "reset the ECU?"

AudiMick

If you want to clear a CEL, disconnecting the battery on a OBD II car won't work. In fact disconnecting the battery will potentially cause all the learned parameters to be lost and the car will probably actually run worse for a while.

If you need to to clear OBD II codes you need a scanner or a Vag.com, if it's an Audi specific code (non OBD II) you need a VAG.com.

eliastfk

I just wanna know because i have to replace my mass airflow meter, which looks like an easy job, but i would like to know how the computer would respond to it.

AudiMick

You can replace it without disconnecting the battery, don't try to reset the ECU.

eliastfk

ok i did that and it seems to work fine, the code went away. does the ecu learn as it goes?

AudiMick

Yes.

600whpA4

Clearing the codes with a vagcom also resets the fuel trim in the ecu and forces the ecu to adapt again.

Shanwhit

The car died and there was a fuel tank Integrity issue message read contact shop! Couple weeks previous to event I replaced the under hood fuel pump and cam-follower upper tank filter new module.

I than purchased and OEM upper/lower unit with new tank ring replaced. With codes have been cleared the car started I drove it about 5 minutes and the died the codes below all came up at once. I was recommended too me to reset ECM PCM ?
I

This is off of the VAGCOM program 2011 Q5