Retrofitting trunk lid emergency release wiring harness - AZ88.50-P-0002-05F

Model 210 with code 491 

Fig 1: Identifying Wiring Harness Repair Kit (220 589 01 99 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Routing wiring harness 

1. Route wiring harness for trunk lid emergency release (1) along present wiring harnesses as shown in drawing.
   Fig 2: Identifying Route Wiring Harness For Trunk Lid Emergency Release Along Present Wiring Harnesses

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
2. Route wiring harness for trunk lid emergency release (1) along present wiring harnesses as shown in drawing.

   Route red, blue (rt, bl) leads into vehicle passenger compartment and brown (br) lead to ground point (W6/1).

   Fig 3: Identifying Route Wiring Harness For Trunk Lid Emergency Release Along Present Wiring Harnesses

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
3. Route wiring harness along body paneling to battery recess and fasten with adhesive tape or cable straps.
   Fig 4: Identifying Route Wiring Harness Along Body Paneling To Battery Recess And Fasten

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Connecting wiring harness 

4. Unclip trunk lid contact switch (S17/8).
5. Connect brown/yellow (br/ge) lead from wiring harness to brown/yellow (br/ge) lead of trunk lid contact switch (S17/8) with cut/clamp connector.
6. Clip in trunk lid contact switch (S17/8).
   Fig 5: Identifying Contact Switch And Brown/Yellow Lead

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
7. Disconnect connector to trunk lid exterior switch (S15/1).

   3-pin connector located at trunk lid lock.

8. Connect brown/white (br/ws) lead from wiring harness to brown/white (br/ws) lead with cut/clamp connector.
9. Connect connector.
   Fig 6: Identifying Lid Exterior Switch And Brown/White Lead

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
10. Attach eye on brown (br) ground lead to ground connection point, left rear in trunk (W6/1).
    Fig 7: Identifying Trunk And Brown Ground Lead

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
11. Remove fuse box (F4).
12. Connect red (rt) lead to plug-in location C for fuse 11 in fuse block (B) (arrow).
13. Install fuse box (F4).
    Fig 8: Identifying Fuse Box, Red Lead And Fuse Block

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
14. Disconnect connector (white) from pneumatic control module (PSE) and disassemble plug.
15. Connect blue (bl) lead from wiring harness to pin 11.

    If pin 11 is already connected, strip approx. 80 mm of insulation off of wiring harness plug and connect blue (bl) lead from wiring harness to present lead (pin 11) with cut/clamp connector.

16. Reconnect plug (white) to pneumatic control module (PSE).
    Fig 9: Locating Plug

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.