This function resets the adaptation values for air filter. This shall only be done at:
Air filter replacement.
Test conditions:
Battery voltage at least 12 V.
Ignition on, engine off.
Procedure:
Start the function.
Confirm with "OK". The adaptation starts and is done when "Function done" is shown.
Press "OK" to exit the function.
If the adaptation failed, check test conditions.
The function is done.