Mobile Phone Cradle Control Unit Component Description - GF82.70-P-0201GW

Model 463 (except 463.342) 

as of model year 2019 

with code EH6 (Multifunction telephony) 

Fig 1: Mobile Phone Cradle Control Unit Component Description Components Location - Model 463 (Except 463.342) As Of Model Year 2019 With Code EH6

Courtesy of MERCEDES-BENZ USA

Location 

The mobile phone cradle control unit is located in the center console.

Tasks 

The mobile phone cradle control unit is responsible for the following:

• Power supply via circuit 30t and circuit 31 (input)
• Reception of switch-in signal from head unit (A26/17) (Input)
• Charging the rechargeable battery for smartphones that support the Qi standard:
  • Inductive charging of smartphone battery with simultaneous cooling (input, output)
  • Sending of charge level for smartphone battery over telematics CAN (CAN-A) to head unit (output)
  • Reception of charge level for smartphone battery through capacitive coupling with smartphone (input)
  • Control signal for activation of inductive charging of smartphone battery (input)
• Smartphone connection over cellular telephone system antenna amplifier/compensator (A28/15) and the telephone antenna splitter (A2/109) to the left telephone antenna (A2/102) and the right telephone antenna (A2/103):
  • Data exchange of telephone and Internet signals over the cellular telephone system antenna amplifier/compensator (input, output)
  • Data exchange of telephone and Internet signals over a capacitive coupling between smartphone and mobile phone cradle control unit (input, output)
• Data exchange with head unit over the telematics CAN and over the near-field communication (NFC) interface, the near-field communication antenna (A2/156) with the NFC interface of the authorized smartphones for an easier smartphone connection to the vehicle (input, output)

Structure 

The mobile phone cradle control unit is equipped with an NFC interface for wireless data exchange and an antenna for capacitive communication. An induction loop is installed that enables wireless electrical charging of the smartphone battery.