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Remove/Install Electric Parking Brake Control Unit - AR42.20-P-0610LWX

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Model 253.388/389/988/989 

Fig 1: Electric Parking Brake Control Unit Components Location - Model 253.388/389/988
G12819794REMOVINGINSTALLINGREFER TO SELF-DIAGNOSTIC SYSTEMSINSTALLATION IMPORTANTCourtesy of MERCEDES-BENZ USA
  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Perform initial startup of electric parking brake control unit (N128) When replacing electric parking brake control unit (N128).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
2 Fold over load compartment floor rear section    
3 Switch off ignition and store transmitter key outside of transmission range (min. 2 m)    
4 Lift up control unit for electric parking brake (N128) far enough to gain access to electrical connector (1) INSTALLATION IMPORTANT Ensure control unit for electric parking brake (N128) is correctly seated.  
5 Release electrical connector (1), disconnect and remove control unit for electric parking brake (N128)    
6 Install in the reverse order