Removal and installation of ASR control unit (N30/1) - RA42001400821X(42-0821)

Operation no. of operation texts and work units or standard texts and flat rates

1. Models 124 and 129 (without models 124.034/036, 129.067/076) 
   Fig 1: Identifying ASR Control Unit Components - Models 124

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
   Fig 2: Identifying ASR Control Unit Components - Models 129

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

   Ignition	OFF  .
   Cover	remove, install.
   ABS/ASR control unit (N30/1)	remove from bracket (24), install.
   Test program	perform (42-0822).

2. Models 124.034/036, 129.067/076 and 140 
   Fig 3: Identifying Cover Module Box

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
   Fig 4: Identifying Special Tools

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
   Fig 5: Identifying ABS Control Unit

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
   Fig 6: Identifying Special Tools

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

   Ignition	OFF  .
   Cover of module box (F23)	remove, install.
   ASR control unit (N30/1)	withdraw/press in using special tool 140 589 01 33 00.
   Diagnosis - fault memory or test program	perform and erase faults (refer to Diagnosis Manual - Chassis).

   Special tool 

   Fig 7: Identifying Special Tools (140 589 01 33 00 07)

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3. Model 126 
   Fig 8: Identifying ABS Control Unit - Model 126

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
   Fig 9: Identifying Locking Device And Plug - Model 126

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

   Ignition	OFF  .
   Locking device (22)	operate and detach plug (21) from ASR control unit (N30/1). If the plug (21) is plugged into the ASR control unit (N30/1), ensure that it engages audibly in the locking device (22).
   ASR control unit (N30/1)	remove from bracket, install.
   Test program	perform (42-0822).

4. Model 201 
   Fig 10: Identifying ABS Control Unit And Battery - Model 201

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
   Fig 11: Identifying Fixing Plate And Screws

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

   Ignition	OFF  .
   Battery (2)	remove, install.
   Locking device	operate and disconnect plug (21) from ASR control unit (N30/1) If the plug (21) is plugged into the ASR control unit (N30/1), ensure that it engages audibly in the locking device.
   Screws (3a)	unscrew, screw in.
   ASR control unit (N30/1) with fixing plate (3)	remove, install.
   Fixing screws (3b)	unscrew, screw in.
   ASR control unit (N30/1)	remove from fixing plate (3), attach.
   Test program	perform (42-0822).