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Service bulletin TT961006

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10237758
Published by NHTSA2023-06-13
Manufacturer's numberTT961006
Manufacturer's date2013-04-19
NHTSA componentEQUIPMENT; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER

NHTSA's summary

If new keys cannot be adapted, they may possibly be the incorrect part number. Cabrio is equipped with two generations (Gen2 and Gen3) of Immobilizer 2. Use the Immobilizer Control Module Part Number to distinguish between Gen2 and Gen3.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Equipment and accessories, Ignition

Vehicles listed
VOLKSWAGEN CABRIO1999, 2000, 2001, 2002

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
TT9610062024-04-08. Service bulletin. key Adaptation and Part Number
TT6414022023-07-31. Service bulletin. To detect which line(s) is inoperative, utilize a volt meter to check for 0 V, which will be present after the open in the grid line. The check must be performed with the engine running and heated rear window switched on. Switch OFF the ignition and visually locate the damage. Proceed with checking any other lines as necessary. Once the damaged line is identified, repair utilizing the Repair kit by Permatex® ITEM 09117.
TT5713022023-07-17. Service bulletin. If key blade is found to stick or bind when opening or closing, check position of roll pin that secures key blade to mechanism. If roll pin is sticking out on either side (as shown below), do not replace key. Instead, use appropriate sized punch and hammer to drive in the roll pin so that it is flush with edge of mechanism.
SA-28F32010-07-26. Service bulletin. VOLKSWAGEN: (REVISED) VEHICLES MAY HAVE IGNITION COILS THAT COULD MALFUNCTION UNDER CERTAIN CONDITIONS. IF THIS HAPPENS, THE MALFUNCTION INDICATOR LAMP (MIL) WILL ILLUMINATED TO LET YOU KNOW THAT VEHICLE MAY EXPERIENCE SOME DETERIORATION IN PERFORMANCE. IN SOME CASES, A MALFUNCTIONING IGNITION COIL MAY CAUSE A VEHICLE TO EXCEED FEDERAL AND/OR CALIFORNIA EMISSIONS STANDARDS. 2001-2007 PASSA/PASSAT WAGON. *PE UPDATED 8/9/10. *PE UPDATED 11/8/10. *PE UPDATED 12/8/10. *PE UPDATED 2/28/11. *PE UPDATED 3/21/11. *PE
SB-28F32010-07-26. Service bulletin. VOLKSWAGEN: VEHICLES MAY HAVE IGNITION COILS THAT COULD MALFUNCTION UNDER CERTAIN CONDITIONS. IF THIS HAPPENS, THE MALFUNCTION INDICATOR LAMP (MIL) WILL ILLUMINATED TO LET YOU KNOW THAT THE VEHICLE MAY EXPERIENCE SOME DETERIORATION IN PERFORMANCE. IN SOME CASES, A MALFUNCTIONING IGNITION COIL MAY CAUSE A VEHICLE TO EXCEED FEDERAL AND/OR CALIFORNIA EMISSIONS STANDARDS. NO MODELS LISTED. *PE
01052002-02-04. Service bulletin. VEHICLES MAY EXPERIENCE MALFUNCTION INDICATOR LAMP ON, MULTIPLE SHORT TO GROUND DIAGNOSTIC TROUBLE CODES ARE STORED. *SLC
99172000-04-19. Service bulletin. SUBJECT REGARDING THE ANTI-THEFT IMMOBILIZER ON BOARD DIAGNOSTIC. *TT
99012000-04-19. Service bulletin. SUBJECT REGARDING THE IMMOBILIZER COMPONENT OVERVIEW FOR 2000 MODEL YEAR VEHICLES. *TT
99111999-11-23. Service bulletin. INFORMATION ON THE ANTI-THEFT IMMOBILIZER ON BOARD DIAGNOSTIC (OBD). MJS