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Home >> Mercedes Benz >> 2021 >> GLA250 Base >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments -- 247 Chassis (2 Of 3) >> Retrofitting & Conversion >> Retrofit Mercedes-Benz Dashcam Wiring Harness >> Retrofit Mercedes-Benz Dashcam Wiring Harness - AZ54.71-P-0001-01MFX

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

Model 247.7 

with code 409 (Left and right front multicontour seat) 

Model 247.7 

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 247
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)
G16050576Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Wiring Harness Repair Kit, Basic (000 589 13 99 00)
G16050577Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1133-06A Silikonspray Silikon-Fluid, 0.4 l art. no. 0893 221 000 Adolf Wurth GmbH & Co. KG
Reinhold-Wurth-Str. 12-17
74653 Kunzelsau-Gaisbach Germany
Tel. +49 7940 15-0
Fax +49 7940 15-1000
http://www.wuerth.de
BR00.45-Z-1144-02A Adhesive tape roll, non-woven Tesa tape, 50 meters, 50 mm wide A 008 989 50 85 09
G16050578Courtesy of MERCEDES-BENZ USA

Connection scheme 

"Retail" routing diagram 

G16050579Courtesy of MERCEDES-BENZ USA

"Vehicle Preparation Center" routing diagram 

G16050580Courtesy of MERCEDES-BENZ USA

IMPORTANT

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

  1. Route dashcam wiring harness (8) from front dashcam mount (8.15) under roof lining to the right to the A-pillar.
    G16050581Courtesy of MERCEDES-BENZ USA
  2. Use felt adhesive tape to fasten ferrite cores (8.2) of dashcam wiring harness (8) to roof lining.
    G16050582Courtesy of MERCEDES-BENZ USA
  3. Route the three individual lines (8.3, GN, RD) of the dashcam wiring harness (8) above the window airbag (30) and into the footwell.

    IMPORTANT

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

    IMPORTANT

    Use a pull-through device.

    G16050583Courtesy of MERCEDES-BENZ USA
  4. Route ground line (8.3) of dashcam wiring harness (8) to front right footwell ground point (W15) and connect. TORQUE SPECIFICATION
  5. Route the two individual lines (GN, RD) of the dashcam wiring harness (8) to the vehicle interior fuse and relay module (F152/4) at the right.
    G16050584Courtesy 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.

    G16050585Courtesy 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.
    G16050586Courtesy 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.

    G16050587Courtesy of MERCEDES-BENZ USA
  11. Install blue/white line (BU/WH) of dashcam wiring harness (8) into fuse holder (10).
    G16050588Courtesy 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).
    G16050589Courtesy 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.

    G16050590Courtesy 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.

    G16050591Courtesy 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).
    G16050592Courtesy 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.

    G16050593Courtesy of MERCEDES-BENZ USA
  21. Lock both fuse holders (26, 30) on vehicle interior fuse and relay module (F152/4) again.
    G16050594Courtesy of MERCEDES-BENZ USA
  22. Assemble retrofitted fuse holders (9.1, 9.2, 10).
    G16050595Courtesy of MERCEDES-BENZ USA
  23. Fasten fuse holders (9.1, 9.2, 10) using cable tie.
    G16050596Courtesy 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.

    G16050597Courtesy of MERCEDES-BENZ USA

    Shown with removed roof lining 

  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

    Route branch-off line for rear dashcam behind mounts for front and rear grab handles (arrows).

  27. Strap down excess lengths of dashcam wiring harness (8) in area of their routing.
  28. Fasten dashcam wiring harness (8) on roof lining using felt adhesive tape.
    G16050598Courtesy of MERCEDES-BENZ USA
  29. Remove cable duct (33) from liftgate and from rear roof frame.
    G16050599Courtesy of MERCEDES-BENZ USA
  30. Route dashcam wiring harness (8) through the opening in the rear roof frame up to the opening for the cable duct (33) on the rear roof frame.
    G16050600Courtesy of MERCEDES-BENZ USA
  31. Route dashcam wiring harness (8) through cable duct (33) into liftgate.
  32. Route dashcam wiring harness (8) by dimension (a) beyond center of liftgate (b) to the left.

    IMPORTANT

    Dimensions: 

    a = 170 mm

    Apply silicon spray to inside of cable duct (33) before routing it.

    IMPORTANT

    Use a pull-through device.

  33. Fix dashcam wiring harness (8) in place using cable ties (arrows).
  34. Attach cable duct (33).
    G16050601Courtesy of MERCEDES-BENZ USA