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From reading the bottom link in the first post it seems sometimes the ECU does it itself?
http://www.waheedkhan.com/vagcom/vagcomthrottlebodyadapt.htm
"Throttle body adaptation is a reset of the throttle body flap to align it to the accelerator pedal as the TT is Drive-by-wire.
Its recommended to be done at a service and then always if the battery were to be disconnected, there are 2 ways to do it.
1. Switch on the ignition and leave it on for 30 seconds.
(You should hear some clicking in the engine bay, always after a battery disconnect)
This is not guaranteed to happen as the ecu decides if it needs doing,
if you disconnect/reconnect the battery first then this method will definitely work.
or
2.Use VAG-COM procedure as described below"
I wonder how the ECU decides if its going to do it or not? also it says "if you disconnect/reconnect the battery first then this method will definitely work."
Any thoughts on this or am I missunderstanding?
Before I had vagcom I cleaned my TB without aligning it and there were no adverse effects. As long as you dont do anything stupid like try to force the flap open you should be OK