Specific wiring harness for upgrading the tailgate to an electric tailgate for Audi Q5 8R, A4 8K Avant Opening the tailgate using the original remote control Scope of delivery: Wiring Note: You have to change the buffer as well as the additional components (drive, push button ...) In some cases, the comfort control must be replaced. Control units with the following index are suitable and a replacement is not necessary: ​​Part number Index: Q, AQ, BQ, CQ, DQ, CS