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

Prepare the CAN (4) wiring harness.

Fig 1: Hands-Free System Wiring Harness Diagram
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 the interface connector (33) to the interface box for the handsfree system (3).

Fig 2: Connecting Interface Connector To Interface Box For Handsfree System
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Connect the ground from the CAN wiring harness to ground (right footwell (W15/1).

Fig 3: Connecting Ground From Can Wiring Harness To Ground (Right Footwell (W15/1)
Courtesy of MERCEDES-BENZ USA
Route the voltage supply connector (30) to the left under the instrument panel 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 4: Routing Voltage Supply Connector To Left Under Instrument Panel And Over To Fuse And Relay Box (F1)
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 5: Unplugging Connector At Audio Gateway Control Unit (N93/1)
Courtesy of MERCEDES-BENZ USA
Strap down the small 4-pin connector (arrow) 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 6: Strapping Down Small 4-Pin Connector With Remaining Yellow Line
Courtesy of MERCEDES-BENZ USA
Route the microphone line with the microphone connector (MIC) to the right-side A-pillar and from there on up to the roof liner. Secure the line in place with adhesive felt.

Fig 7: Routing Microphone Line With Microphone Connector To Right-Side A-Pillar And From There On Up To Roof Liner
Courtesy of MERCEDES-BENZ USA
Secure the microphone (6) to the overhead control panel (OCP) with double-sided adhesive tape (included in the parts kit) and then plug in the microphone connector (MIC).
Align microphone so that pickup opening points towards driver.

Fig 8: Securing Microphone To Overhead Control Panel With Double-Sided Adhesive Tape
Courtesy of MERCEDES-BENZ USA
Position the outer part of the handsfree system speaker (21) on the lower right section of the A-pillar trim cover. Mark the hole for the speaker on the trim cover and then cut the required section.

Fig 9: Positioning Outer Part Of Handsfree System Speaker On Lower Right Section Of A-Pillar Trim Cover
Courtesy of MERCEDES-BENZ USA
Install the handsfree system speaker (21) and then plug in the speaker connector (SP).

Fig 10: Installing Handsfree System Speaker And Then Plug In Speaker Connector
Courtesy of MERCEDES-BENZ USA