Retrofit hands-free system wiring harness - AZ82.70-P-0005-02VV

Prepare the CAN (4) wiring harness.

Fig 1: CAN Wiring Harness Diagram
Courtesy of MERCEDES-BENZ USA
Expose VDA connector (33) in front passenger footwell (arrow).

Fig 2: Locating VDA Connector In Front Passenger Footwell
Courtesy of MERCEDES-BENZ USA

Remove housing of VDA connector (33) and exchange with connector with the short coding tabs listed in the ordering instructions.

Fig 3: Removing Housing Of VDA Connector And Exchange With Connector
Courtesy of MERCEDES-BENZ USA
Connect the CAN (4) wiring harness to the ICANI box (2) with the ICANI connector (32), and then connect the handsfree connector (FSE) (7) to the free connection at the interface box for the handsfree system (3).
Connect VDA connector (33) to the hands-free system (3) interface box.

Fig 4: Connecting VDA Connector To Hands-Free System Interface Box
Courtesy of MERCEDES-BENZ USA
Connect the ground from the CAN wiring harness to ground (right footwell) (W15/1).

Fig 5: Connecting Ground From Can Wiring Harness To Ground (Right Footwell) [W15/1]
Courtesy of MERCEDES-BENZ USA
Route the voltage supply connector (30) under the instrument panel to the left and over to the fuse and relay box (F1), and then connect the fuse carrier to position 42. Insert a 7.5 A fuse in the fuse carrier.
Secure the connector line in place with adhesive felt.

Fig 6: Routing Voltage Supply Connector Under Instrument Panel To Left And Over To Fuse And Relay Box
Courtesy of MERCEDES-BENZ USA
Unplug the connector at the audio gateway control unit (N93/1), open the connector housing and remove the small 4-pin connector.
Remove the pink line, the brown line and the brown/red line from the connector.

Fig 7: Unplugging Connector At Audio Gateway Control Unit (N93/1), Open Connector Housing
Courtesy of MERCEDES-BENZ USA
Strap down the small 4-pin connector (arrow) of the vehicle's wiring harness with the remaining yellow line.
Insert the pink (rs) line removed in the step above into contact cavity 3 of the black 4-pin connector housing (sw) from the wiring harness (4) and then insert the 4-pin connector housing (sw) into the connector from the audio gateway control unit (N93/1). Close the connector and connect the audio gateway.
Insert the brown line (br) removed in the step above into contact cavity 2 and the brown/ red line (br/rt) into contact cavity 1 of the blue connector housing for the CAN connection to the AGW (10).
Be sure to insert the brown (br) line into the cavity that has the gray/white line connected on the opposite side. Then insert the brown/red (br/rt) line into the cavity that has the gray line connected to it.

Fig 8: Strapping Down Small 4-Pin Connector Of Vehicle's Wiring Harness With Remaining Yellow Line
Courtesy of MERCEDES-BENZ USA