With this dongle it is possible to activate the dimmable interior and exterior mirrors The exterior mirrors dim automatically when light is detected (e.g. from the rear lights) Suitable for the following vehicles: Mercedes A-Class W177 series Mercedes EQA-Class H243 series Mercedes EQB-Class X243 series Mercedes B-Class W246 series Mercedes B-Class W247 series Mercedes CLA-Class C/X118 series Mercedes GLA-Class H247 series Mercedes GLB-Class X247 series Other models on request Activation and deactivation via diagnostic interface of your vehicle Simply connect the adapter to the vehicle's OBD interface - done! Scope of delivery: 1x Coding Dongle Note: The coding dongle can only be used for one vehicle. The compatibility of the control units door control needs to be checked