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Home >> Mercedes Benz >> 2021 >> S500 >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Electrical System, Equipment & Instruments (2 Of 3) -- 223 Chassis >> Testing & Repair >> Remove/Install Gateway Powertrain Control Unit - AR54.21-P-0026S

Remove/Install Gateway Powertrain Control Unit - AR54.21-P-0026S

Model 223 

G16191631Courtesy of MERCEDES-BENZ USA
Topical note  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING Remove/install     
1 Remove trim under driver's side instrument panel.   AR68.10-P-1501S
2 Remove door sill on driver's side. SPECIAL TOOL Long wedge Fig 1
3 Push floor covering on driver's side to one side until the electrical connectors of the powertrain control unit (N127) can be disconnected.    
4 Disconnect electrical connectors from powertrain control unit (N127).    
5 Unclip powertrain control unit (N127) and remove.    
6 Install in the reverse order.    
7 Commission powertrain control unit (N127). Only when replacing the powertrain control unit (N127).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06FR
Fig 1: Identifying Long Wedge (115 589 03 59 00)
G07070400Courtesy of MERCEDES-BENZ USA