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Home >> Mercedes Benz >> 2019 >> C300 4Matic, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 318 (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-1000-05MRI

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

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Engine 264 in model 205, 253 

GROUND POINTS

Number Designation Model 205 as of model year 2019 Model 253 (except 253.99)
BA00.19-P-1043-01E Nut, ground line to pin/underfloor M8 Nm 20 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 205 Model 253
BA54.18-P-1001-02C Nut, positive line to busbar on firewall M6 Nm 8 8
M8 Nm 16 16
G14185052Courtesy of MERCEDES-BENZ USA

Shown in model 205 except code B01 (48V technology) 

  1. Release electrical connector (1) and disconnect.
  2. Unclip electric line (2) and fasten to Engine.
  3. Release and disconnect electrical connectors (5, 6).
  4. Unclip wiring harness (4) from air filter housing and place to one side.
  5. Remove electric lines (3) from busbar TORQUE SPECIFICATION .
  6. Remove ground lines (7) from underbody Engine 264 in model 205

    as of model year 2019

    Engine 264 in model 253 (except 253.99)

    up to model year 2020 TORQUE SPECIFICATION .

  7. Remove heat shield (9) TORQUE SPECIFICATION .
  8. Release and disconnect electrical connector (8).
  9. Connect in reverse order.

Shown in model 238 except code B01 (48V technology) and code M005 (4MATIC) 

G13770817Courtesy of MERCEDES-BENZ USA