AXTC-MB3 Data Interface with Steering Wheel Controls fits Mercedes 2016-2021AXTC MB3 Data Interface with Steering Wheel Controls fits Mercedes 2016 2021 Wiring interface designed for installing an aftermarket head unit in non amplified Mercedes Benz AMG C Class and AMG GLC Class models (20162021). Retains factory features including steering wheel controls, R. A. P., and essential vehicle data outputs. Auto detect technology simplifies setup and ensures compatibility with major radio brands. Features: Compatible with 20162021