AW: The Z-E3771 has options for connecting to existing steering wheel remote control buttons in the vehicle.

1. the Z-E3771 has an analog direct interface, which supports compatible vehicles without further measures. This means that the steering wheel button assignment is set to the respective vehicle series via the setup on the device (factory set for series 8/2). The buttons can be reprogrammed to your own requirements via button programming mode. Please refer to the instructions in the operating instructions.
2. the telephone button functions on the front of the steering wheel on Fiat Ducato 8/9/2 series and identical models are not supported directly, but by an optional LIN-bus steering wheel interface available separately.