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Home >> Mercedes Benz >> 2021 >> GT 43 AMG >> Repair and Diagnosis >> Accessories & Equipment >> Window Motors & Regulators >> Doors -- 290 Chassis >> Testing & Repair >> Remove/Install Electric Liftgate Control Unit - AR72.29-P-0003FRX

Remove/Install Electric Liftgate Control Unit - AR72.29-P-0003FRX

Model 290 

Fig 1: Electric Liftgate Control Unit Components Location - Model 290
G16556010WARNINGREMOVINGINSTALLINGREFER TO SELF-DIAGNOSTIC SYSTEMSCourtesy of MERCEDES-BENZ USA
WARNING Risk of injury  caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. No parts of the body or limbs should be within the operating area when the components are moving. AS00.00-Z-0011-01A
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
  Notes on HANDS-FREE ACCESS   AH80.61-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Commission the liftgate control unit (N121/1) using vehicle diagnosis system. When replacing liftgate control unit (N121/1).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06FR
2 Switch off ignition and store transmitter key outside of transmission range (min. 2 m).    
3 Remove lower liftgate trim.   AR72.20-P-6617FRX 
4 Disconnect electrical connectors (1).    
5 Remove screw (2) and take off liftgate control unit (N121/1).    
6 Install in the reverse order.    
  Normalizing     
7 Close the liftgate by hand.    
8 Switch driver trunk lid/liftgate control button in driver's side door trim to "Open" position until liftgate has reached upper stop.    
9 Switch driver trunk lid/liftgate control button in driver's side door trim to "Open" position again for 4 s.