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Home >> Mercedes Benz >> 2017 >> GLC300 Base >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Electrical System - Engine - 253 Chassis >> Testing & Repair >> Disconnect/Connect Engine Wiring Harness To Remove Engine >> Disconnect/Connect Engine Wiring Harness To Remove Engine - AR15.18-P-1000-05MNG

Disconnect/Connect Engine Wiring Harness To Remove Engine - AR15.18-P-1000-05MNG

Engine 177 in model 253 

GROUND POINTS

Number Designation Model 253 (except 253.99)
BA00.19-P-1043-01E Nut, ground line to pin/underfloor M8 Nm 20
AUTOMATIC TRANSMISSION COMPLETE

Number Designation Transmission 725.0
BA27.10-P-1009-04H Screw/bolt, heat shield to oil pan Nm 9
WIRING HARNESS

Number Designation Model 253
BA54.18-P-1001-02C Nut, positive line to busbar on firewall M6 Nm 8
M8 Nm 16
G12817188Courtesy of MERCEDES-BENZ USA
  1. Release and disconnect electrical connectors (1).
  2. Remove bolts (3) and remove heat shield (2).
  3. Remove heat shield in front of cover (4).
  4. Remove cover (4).
  5. Remove electric line (5) from busbar TORQUE SPECIFICATION .
  6. Remove electric line (6) from busbar TORQUE SPECIFICATION .
  7. Remove electric line (7) from busbar TORQUE SPECIFICATION .
    G12817189Courtesy of MERCEDES-BENZ USA
  8. Release and disconnect the electrical connector (90) of the all-wheel drive control unit (N45).
  9. Release and disconnect electrical connector (91).
  10. Release and disconnect the electrical connector (92) on the center exhaust gas flap actuator motor (M16/55)
  11. Detach ground line (93) from underfloor TORQUE SPECIFICATION .
  12. Remove heat shield over electrical connector (94) at automatic transmission TORQUE SPECIFICATION .
  13. Release and disconnect electrical connector (94) of automatic transmission
  14. Connect in reverse order.
G12817190Courtesy of MERCEDES-BENZ USA