| All components of the rear axle have been modified with the aim of increasing comfort. The design of the subframe carrier, struts, the wheel carriers and the subframe has been revised. In the new development, a lightweight design has been implemented throughout, e.g. the subframe in thinner panel thicknesses and wheel control parts made from aluminum to reduce the unsprung masses. As a result of these measures, it has been possible to achieve a suspension of outstanding comfort with exceptional vehicle dynamics. The front subframe carrier is hydraulic, the spring control arm bearing is integrated into the rear axle carrier. The frontmost rear axle gear bearing is bolted on. Additional support pates at the front (for NVH/crashes). NVH = Noise, Vibration, Harshness. 
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Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual > System settings : Bluetooth
   Information about Bluetooth Bluetooth technology is a standard for shortrange wireless data transfer up to approximately 32.8 ft (10 m). You can use Bluetooth to connect your mobile phone to the multimedia system and use the following functions, for example: hands-free system with access to the foll ...