Check the listing for details. Car Replacement Key Fob Shell Case for Audi A3 A4 A6 Q7 TT 3 Key Button. Color: Black, Condition: New. Listed at 13.89 USD. Caution Notice:It does not replace the core electronics. Any existing defects of the electronic core will not be fixed by the shell replacement.Key Case and Key Only. No Electronic Internals.Before replacing our key shell, please make sure the battery and chip must be intact and have been successfully programmed. Otherwise, even if the key shell is replaced, the damaged chip also does not work.Please pay special attention to the protection of PCB circuit board and anti-static breakdown chip during the disassembly and installation process, which can avoid damaging the chip and being not work.Please ensure your current remote key and key blade fits exactly the same as in the specifications and the key sample picture.Please check the above Fit for part number. Please be sure that your vehicle is listed on the guide.