Highline comfort control unit for OEM retrofit of various extras (electric tailgate, LED taillights Facelift, advanced key) for Audi A6, A7 4G Selectable options: PR No. 5D7 PR No. 5D1 PR No. 5D2, 5D4 Scope of delivery: Comfort control unit Note: The correct PR number must be checked according to the VIN (vehicle identification number)