Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Volkswagen for this TSB. Call your local Volkswagen dealer's service department & ask for a copy of TSB# TB-01-09-20.
VOLKSWAGEN: UPDATE PROGRAMMING, TCM, HARSH DOWNSHIFT AFTER EXTENDED HIGHWAY DRIVING. INTERNAL TRANSMISSION PRESSURE DECREASE IN C1 CLUTCH DUE TO ACCUMULATED AIR IN THE C1 OIL CIRCUIT. *PE