1997 - 2005 Audi Keyless Entry Section 4 Buttons Fob (Lock, Unlock, Trunk & Panic) 315 MHz- Old Style - Round Head This Key Fob fits for: AUDI A4 1997 1998 1999 2000 2001 2002 2003 2004 2005AUDI A4 QUATTRO 1997 1998 1999 2000 2001 2002 2003 2004 2005AUDI A6 1997 1998 1999 2000 2001 2002 2003 2004AUDI A6 QUATTRO 1997 1998 1999 2000 2001 2002 2003 2004 2005AUDI A8 1997 1997 1998 1999 2000 2001 2002 2003 2004 2005AUDI TT 2000 2001 2002 2003 2004 2005AUDI TT QUATTRO 2000 2001 2002 2003 2004 2005AUDI ALLROAD 2001 2002 2003 2004 2005AUDI S4 2000 2001 2002 2003 2004 2005AUDI CABRIOLET 1997 1998 More InformationFCC ID: MYT8Z0837231Frequency: 315 MHzPart #: 4D0 837 231 EBattery CR2032Reusable: Yes Notes: Replacement Keyless Entry Remotes and Key fobs for Cars and Trucks (picture might show FRONT and BACK of the same key remote). All Keyless Remotes and Smart, Proxy Keys and Locksmith Tools include a brand new battery. All New Keyless Entry Remote Key Fob, Refurbished Remote Key Fob and Locksmith Tools are tested before we ship. Refurbished Remotes have an OEM board. The case may have been replaced with or without the logo. Aftermarket Remotes do not include logo. We do not cut or program keys at our warehouse. Please contact your local locksmith here for pricing. Compatibility Replacement Remotes: These remotes work with car models listed in the compatibility section. **Our compatibility section is researched to the best of our knowledge - it is to be used as a suggested guide. Please confirm part number and FCC ID to ensure proper fitment. In general there is no onboard programming procedure for newer replacement remote keys. Key fobs must be programmed by a professional locksmith. Please contact an automotive locksmith to get an accurate quote so they can program this key fob once you receive it. Many keyless entry remote fob and smart key programming procedures allow you to do the programming yourself for free. Programming Instructions for Replacement Key Fobs are available here.