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Vehicle diagnosis, measurement and information systems > < Fuse holder and relay carrier
Removing and installing the vehicle voltage control unitJ519
Removing and installing the vehicle voltage control unit -J519-
Removing
The control unit is located behind the left dash panel on the driver side.
– Disconnect battery earth strap → Chapter.
  
– Remove the bottom part of the dash panel -1- on the driver's side → Body Work; Rep. gr.70.
– Remove the knee airbag and its bracket → Body Work; Rep. gr.69.
– Unclip the relay carrier below the vehicle voltage control unit -J519- → Chapter and unhook towards the bottom.
– For unplugging the plugs -2-, successively press together the catches on the plug connections and remove the plugs on the control unit by swiveling out the clamp.
– Unhook the pulled-out plugs towards the bottom.
– Press together the catches -arrows A-, slightly tilt out the control unit -arrow B- and push out of the bearing in the bracket -arrow C-.
Install
Installation is performed in the reverse order, pay attention to the following points:
– Insert the control unit and correctly lock into the holder.
– Pay attention to the work sequence when connecting the battery → Chapter.
  Note
t If the vehicle voltage control unit -J519- is replaced, the new control unit must be coded.
t For carrying out the coding, the → Vehicle diagnostic tester must be connected on-line (network connection).
t After the replacement and the coding (depending on equipment) the functions of the control unit such as „remote control for central locking“, „anti-theft warning system“, etc. must be adapted.
 S97-6345

Vehicle diagnosis, measurement and information systems > < Fuse holder and relay carrier