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Home >> Mercedes Benz >> 2021 >> E450 Base, 2D Convertible >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments - 238 Chassis (3 Of 6) >> Retrofitting & Conversion >> Retrofit Mercedes-Benz Dashcam Wiring Harness - AZ54.71-P-0001-01LWO

Retrofit Mercedes-Benz Dashcam Wiring Harness - AZ54.71-P-0001-01LWO

Model 238.3 

Topical note  Notes on the use of paint scraping nuts on ground connections   AH00.19-P-1000-20A
Topical note  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
Topical note  Notes on retrofitting electrical/optical lines   AH82.00-P-0000-01A
GROUND POINTS

Number Designation Model 238
BA00.19-P-1012-02B Left front footwell ground point W15/5 Nm 10
Fig 1: Identifying New Passenger Car Wiring Harness Repair Kit (220 589 04 99 00)
G13743265Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Wiring Harness Repair Kit, Basic (000 589 13 99 00)
G12618300Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1144-02A Adhesive tape roll, non-woven Tesa tape, 50 meters, 50 mm wide A 008 989 50 85 09
G15467922Courtesy of MERCEDES-BENZ USA

Connection scheme 

Routing diagram "Retail" 

G15467923Courtesy of MERCEDES-BENZ USA

Routing diagram "Vehicle Preparation Center" 

G15467924Courtesy of MERCEDES-BENZ USA

IMPORTANT The following work procedure is described using the routing diagram "Retail"

  1. Route dashcam wiring harness (8) from front dashcam mount under roof lining to the left to the A-pillar.
    G12621882Courtesy of MERCEDES-BENZ USA
  2. Fasten ferrite cores of dashcam wiring harness (8) to overhead control panel mount (36) using cable ties (arrows A).
    G12621883Courtesy of MERCEDES-BENZ USA
  3. Route the three single lines of the dashcam wiring harness (8) above the window airbag (30).
    G12621941Courtesy of MERCEDES-BENZ USA
  4. Route the three single lines of the dashcam wiring harness (8) above the window airbag (30) up to the footwell.

    IMPORTANT Route the three individual lines of the dashcam wiring harness (8) behind the crossmember for the instrument panel.

    G15467928Courtesy of MERCEDES-BENZ USA
  5. Route ground line (8.10) of dashcam wiring harness to left front footwell ground point (W15/5) and connect TORQUE SPECIFICATION .

    IMPORTANT If already occupied, use the left footwell ground point (W34).

    G12621886Courtesy of MERCEDES-BENZ USA
  6. Remove violet coupling (MR2) from front SAM control unit (N10/6).
  7. Remove gray 21-pin connector insert from violet coupling (MR2).
    G12621944Courtesy of MERCEDES-BENZ USA
  8. Remove line (20) from contact cavity "29" of gray 21-pin coupling insert (19).

    IMPORTANT The appropriate tool is available in the SPECIAL TOOL basic wiring harness repair kit or the SPECIAL TOOL supplementary passenger car wiring harness repair kit.

  9. Install line (20) in free contact cavity of blue 2-pin coupling (8.3) of dashcam wiring harness (8).
  10. Lock blue 2-pin coupling (8.3).
  11. Install line (8.8) of Y-line (8.7) into contact cavity "29" of gray 21-pin coupling insert (19).
    G12621945Courtesy of MERCEDES-BENZ USA
  12. Install gray 21-pin coupling insert into violet connector (MR2).
  13. Attach violet coupling (MR2) to front SAM control unit (N10/6).
    G12621944Courtesy of MERCEDES-BENZ USA
  14. Connect blue 2-pin coupling (8.3) of dashcam wiring harness (8) to blue 2-pin plug (8.9) of Y-line (8.7).
    G12621947Courtesy of MERCEDES-BENZ USA
  15. Remove electrical fuse (29) from slot 210 (arrow B) of driver's side fuse and relay module (K40/6).

    IMPORTANT The electrical fuse (29) is reused.

    The fuse rating of the electrical fuse (29) is 15 A.

    G12621912Courtesy of MERCEDES-BENZ USA
  16. Release yellow fuse holder (24) at driver's side fuse and relay module (K40/6).
  17. Remove red/black line (25) from contact cavity "7" (arrow C) of yellow fuse holder (24).

    IMPORTANT The appropriate tool is available in the SPECIAL TOOL basic wiring harness repair kit or the SPECIAL TOOL supplementary passenger car wiring harness repair kit.

    G12621892Courtesy of MERCEDES-BENZ USA
  18. Install red line (8.12) of Y-line (8.6) into contact cavity "7" (arrow C) of yellow fuse holder (24).
  19. Lock yellow fuse holder (24) at driver's side fuse and relay module (K40/6).
    G12621893Courtesy of MERCEDES-BENZ USA
  20. Install removed red/black line (25) in free contact cavity of fuse holder (8.4) of Y-line (8.6).
    G12621915Courtesy of MERCEDES-BENZ USA
  21. Install lock (8.13) in fuse holder (8.4) (arrow D).
  22. Install electrical fuse (29) in fuse holder (8.4).

    IMPORTANT The electrical fuse (29) was removed beforehand.

    The fuse rating of the electrical fuse (29) is 15 A.

    G12621952Courtesy of MERCEDES-BENZ USA
  23. Put both fuse holders (8.4, 8.5) of dashcam wiring harness (8) together.
    G12621953Courtesy of MERCEDES-BENZ USA
  24. Install the electrical fuse (55) included with the parts kit in slot 210 (arrow B) of the driver's side fuse and relay module (K40/6).

    IMPORTANT The fuse rating of the electrical fuse (55) is 25 A.

    G12621897Courtesy of MERCEDES-BENZ USA
  25. Route branch-off line for rear dashcam of dashcam wiring harness (8) on roof lining towards rear up to center of roof lining.

    IMPORTANT Route branch-off line for dashcam at rear behind mount (arrow E).

  26. Strap down excess lengths of dashcam wiring harness (8) in area of A-pillar.
  27. Then fasten dashcam wiring harness (8) on roof lining using felt adhesive tape.

    Shown with removed roof lining 

G15467941Courtesy of MERCEDES-BENZ USA