Retrofit Universal Media Interface adapter wiring harness - AZ82.85-P-0004-02EW

MODEL 212.0## /2## (except 212.074 /077 /274 /277) 1# 

Fig 1: Identifying Long Wedge (115 589 03 59 00)

Courtesy of MERCEDES-BENZ USA

Connection scheme 

Universal Media Interface adapter wiring harness (3) 

Fig 2: Universal Media Interface Adapter Wiring Harness Connection Diagram

Courtesy of MERCEDES-BENZ USA

Universal Media Interface adapter wiring harness routing diagram (3) 

Fig 3: Universal Media Interface Adapter Wiring Harness Routing Diagram

Courtesy of MERCEDES-BENZ USA

1. Wrap felt tape around branch-off line of center instrument panel speaker (a) of the Universal Media Interface adapter wiring harness (3).
   Fig 4: Universal Media Interface Adapter Wiring Harness

   Courtesy of MERCEDES-BENZ USA
2. Connect black, 44-pin plug (6) of Universal Media Interface adapter wiring harness (3) to black 44-pin coupling (7) of vehicle wiring harness.
3. Remove black, 2-pin coupling for optical fiber (11) from black, 44-pin coupling (7), and install in black, 44-pin coupling (4).

   Only for vehicles with one of the following codes:

   • Code (518) Media interface
   • Code (537) Digital radio
   • Code (810) Sound system
4. Route Universal Media Interface adapter wiring harness (3) to left lower radio recess.
   Fig 5: Routing Universal Media Interface Adapter Wiring Harness

   Courtesy of MERCEDES-BENZ USA

   The black, 44-pin coupling (4) is connected to the radio at a later stage. The Universal Media Interface adapter wiring harness (3) obstructs the installation of the radio because of its size.

   The radio can only be installed if the Universal Media Interface adapter wiring harness (3) is as low down as possible in the rear area of the automatic air conditioning control and operating unit.

5. Route black, 32-pin coupling (5) of Universal Media Interface adapter wiring harness (3) into the front passenger footwell.

   The black, 32-pin coupling (5) is connected to the Universal Media Interface control unit at a later stage.

6. Route black, 2-pin plug (10) and black, 2-pin coupling (9) of Universal Media Interface adapter wiring harness (3), as shown, through the cable duct of the Low Voltage Differential Signal (LVDS) display wiring harness to the installation location of the center instrument panel speaker.
   Fig 6: Routing Black, 32-Pin Coupling Of Universal Media Interface Adapter Wiring Harness Into The Front Passenger Footwell

   Courtesy of MERCEDES-BENZ USA
7. Remove insulation mat (12)
8. Detach black, 2-pin coupling (8) from center instrument panel speaker (H4/27).

   On vehicles with code (810) Sound system.

   Fig 7: Center Instrument Panel Speaker, Insulating Mat And Coupling

   Courtesy of MERCEDES-BENZ USA

   Operation steps 9 to  13 only for vehicles without code (810) Sound system.

9. Use long wedge to carefully unclip cover (13) until the black, 3-pin coupling (14) is accessible.
10. Remove cover (13).
11. Clip center instrument panel speaker (H4/27) included as part of the package contents into the two specified supports.
12. Connect black, 3-pin coupling (14) to the sun sensor.
13. Carefully clip in the cover (13).
    Fig 8: Center Instrument Panel Speaker, Cover And 3-Pin Coupling

    Courtesy of MERCEDES-BENZ USA
14. • 14.1)  Connect black, 2-pin plug (10) to black 2-pin coupling (8) of vehicle wiring harness.

      The black, 2-pin coupling (8) was connected to the center instrument panel speaker.

      On vehicles with code (810) Sound system.

    • 14.2)  Strap down black 2-pin plug (10) to branch-off line of Universal Media Interface adapter wiring harness (3) and wrap with felt tape.

      In vehicles without code (810) Sound system.

15. Connect black 2-pin coupling (9) to center instrument panel speaker.
    Fig 9: Universal Media Interface Adapter Wiring Harness, Plug And Coupling

    Courtesy of MERCEDES-BENZ USA