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Home >> Mercedes Benz >> 2025 >> GLA250 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Electrical System, Equipment & Instruments (2 Of 3) -- 118 Chassis) >> Retrofitting & Conversion >> Retrofit Mercedes-Benz Dashcam Wiring Harness >> Retrofit Mercedes-Benz Dashcam Wiring Harness - AZ54.71-P-0001-01MFR

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

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Model 118.3 

with code 409 (Left and right front multicontour seat) 

Model 118.3 

with code U22 (Lumbar support adjustment) 

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

Number Designation Model 118
BA00.19-P-1019-02E Right front footwell ground point W15 M6 Nm 10
Fig 1: Identifying New Passenger Car Wiring Harness Repair Kit (220 589 04 99 00)
G16063971Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Wiring Harness Repair Kit, Basic (000 589 13 99 00)
G16063972Courtesy 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
G16063973Courtesy of MERCEDES-BENZ USA

Connection scheme 

"Retail" routing diagram 

G16063974Courtesy of MERCEDES-BENZ USA

"Vehicle Preparation Center" routing diagram 

G16063975Courtesy of MERCEDES-BENZ USA

IMPORTANT

The following work procedure is described based on the "Retail" routing diagram.

  1. Route dashcam wiring harness (8) from front dashcam mount (8.15) under roof lining toward the right to A-pillar.
    G15489991Courtesy of MERCEDES-BENZ USA
  2. Fasten ferrite cores (8.2) of dashcam wiring harness (8) to roof lining using felt tape.
    G14690307Courtesy of MERCEDES-BENZ USA
  3. Route three single lines (8.3, GN, RD) of dashcam wiring harness (8) above window airbag (30) up to footwell.

    IMPORTANT

    Route three single lines (8.3, GN, RD) of dashcam wiring harness (8) through cable duct behind crossmember for instrument panel.

    Use a pull-through device.

    G15489945Courtesy of MERCEDES-BENZ USA
  4. Route and connect ground line (8.3) of dashcam wiring harness (8) to front right footwell ground point (W15). TORQUE SPECIFICATION
  5. Route two single lines (GN, RD) of dashcam wiring harness (8) to vehicle interior fuse and relay module (F152/4) at right.
    G14690309Courtesy of MERCEDES-BENZ USA
  6. Remove electrical fuse (29) from slot 124 (arrow A) of vehicle interior fuse and relay module (F152/4).

    IMPORTANT

    The electrical fuse (29) is reused.

    The fuse rating of the electrical fuse (29) is 20 A.

  7. Remove electrical fuse (25) from slot 116 (arrow B) of vehicle interior fuse and relay module (F152/4).

    IMPORTANT

    The electrical fuse (25) is reused.

    The fuse rating of the electrical fuse (25) is 7.5 A.

    G14690310Courtesy of MERCEDES-BENZ USA
  8. Release fuse holder (30) of vehicle interior fuse and relay module (F152/4) (arrows D) and remove.
  9. Release fuse holder (26) of vehicle interior fuse and relay module (F152/4) (arrows E) and remove.
    G14690311Courtesy of MERCEDES-BENZ USA
  10. Remove red/yellow line (20) from contact cavity "5" (arrow) of fuse holder (30).

    IMPORTANT

    Take appropriate tool from the SPECIAL TOOL basic wiring harness repair kit or the SPECIAL TOOL supplementary passenger car wiring harness repair kit.

    G14690312Courtesy of MERCEDES-BENZ USA
  11. Install blue/white line (BU/WH) of dashcam wiring harness (8) into fuse holder (10).
    G14690313Courtesy of MERCEDES-BENZ USA
  12. Install removed red/yellow line (20) into free contact cavity of fuse holder (10).
  13. Install green line (GN) into contact cavity "5" (arrow) of fuse holder (30).
    G14690314Courtesy of MERCEDES-BENZ USA
  14. Install electrical fuse (11) included in parts kit into fuse holder (10).

    IMPORTANT

    The fuse rating of the electrical fuse (11) is 25 A.

    G14690315Courtesy of MERCEDES-BENZ USA
  15. Remove red line (38) from contact cavity "4" (arrow) of fuse holder (26).

    IMPORTANT

    Take appropriate tool from the SPECIAL TOOL basic wiring harness repair kit or the SPECIAL TOOL supplementary passenger car wiring harness repair kit.

    G14690316Courtesy of MERCEDES-BENZ USA
  16. Install removed red line (38) into free contact cavity of fuse holder (9.1).
  17. Install Y-line (9) into contact cavity "4" (arrow) of fuse holder (26).
  18. Install red line (RD) of dashcam wiring harness (8) into fuse holder (9.2).
    G14690317Courtesy of MERCEDES-BENZ USA
  19. Install electrical fuse (12) included in parts kit into fuse holder (9.2).

    IMPORTANT

    The fuse rating of the electrical fuse (12) is 5 A.

  20. Install electrical fuse (25) into fuse holder (9.1).

    IMPORTANT

    The electrical fuse (25) was removed beforehand.

    The fuse rating of the electrical fuse (25) is 7.5 A.

    G14690318Courtesy of MERCEDES-BENZ USA
  21. Lock both fuse holders (26, 30) at vehicle interior fuse and relay module (F152/4) again.
    G14690319Courtesy of MERCEDES-BENZ USA
  22. Assemble retrofitted fuse holders (9.1, 9.2, 10).
    G14690320Courtesy of MERCEDES-BENZ USA
  23. Fasten fuse holders (9.1, 9.2, 10) with cable ties.
    G14690321Courtesy of MERCEDES-BENZ USA
  24. Install electrical fuse (29) into slot 124 (arrow A) of vehicle interior fuse and relay module (F152/4).

    IMPORTANT

    The electrical fuse (29) was removed beforehand.

    The fuse rating of the electrical fuse (29) is 20 A.

  25. Install electrical fuse (13) included in parts kit into slot 116 (arrow B) of vehicle interior fuse and relay module (F152/4).

    IMPORTANT

    The fuse rating of the electrical fuse (13) is 15 A.

    G14690322Courtesy of MERCEDES-BENZ USA
  26. Route branch-off line for rear dashcam of dashcam wiring harness (8) on roof lining towards rear up to center of roof lining.

    IMPORTANT

    On vehicles with code 413 (Panoramic sliding roof/glass roof)

    Route branch-off line for dashcam at rear behind mount for rear coat hook (arrow).

    IMPORTANT

    On vehicles without code 413 (Panoramic sliding roof/glass roof)

    Route dashcam wiring harness (8) in front area at the same level. Route branch-off line for dashcam at rear behind mount for rear grab handle.

  27. Strap down extended lengths of dashcam wiring harness (8) in area of their routing.
  28. Fasten dashcam wiring harness (8) on roof lining using felt adhesive tape.

    Shown on vehicle with code 413 (Panoramic sliding sunroof/glass roof) with removed roof lining 

    G16063993Courtesy of MERCEDES-BENZ USA
  29. Route dashcam wiring harness (8) by dimension (a) beyond edge of cutout for additional brake lamp in roof lining (b).

    IMPORTANT

    Dimensions: 

    a = 280 mm

    G16063994Courtesy of MERCEDES-BENZ USA