Complete kit for upgrading the garage door opener code 231 for Mercedes Benz A-Class W177 The buttons integrated in the interior mirror can be programmed for the garage door, for example Allows opening and closing of garages and exterior doors at the touch of a button on the interior mirror No additional remote control required Scope of delivery: Cable set Interior mirrors with buttons Coding dongle Notes: The hardware may partly come from test vehicles and have undergone a thorough functional test. The software is up to date Not suitable for vehicles with code 596: THERMAL AND ACOUSTIC INSULATION AND INFRARED-REFLECTING COMPOSITE SAFETY GLASS