578919 Removing and Installing Control Unit for Rear-end Electronics

WM 578919 Removing and installing control unit for rear-end electronics

Tools





Technical values





Preliminary work

Preliminary work for control unit for rear-end electronics

1. If the control unit for rear-end electronics has to be replaced, the values/coding must be read out prior to removal using the 2nd generation PIWIS Tester 9818. -> 578955 Replacing control unit for rear-end electronics 578955 Replacing Control Unit for Rear-end Electronics.
2. Switch off ignition and remove the remote control from the ignition lock.
3. Open the luggage compartment floor.
4. Remove tool kit tray.
5. Unscrew the two fastening screws -1- on the fuse/relay carrier.





Unscrewing fastening screws

6. Pull the fuse/relay carrier up out of the guide.

Removing control unit for rear convenience systems

Removing control unit for rear-end electronics

NOTICE

Voltage peaks

- Risk of damage to load or to the control unit

-> Remove the ignition key and switch off load before disconnecting or removing load.





Installation position

1. Unscrew the fastening screw -2- for the control unit for rear-end electronics.





Pulling control unit out of the guide

2. Release the electric plug connections -a- and pull the connectors off the control unit.





Releasing electric connectors

Installing control unit for rear convenience systems

Installing control unit for rear-end electronics

1. Press electric connectors into the control unit until they engage securely/lock.





Plugging in connectors

2. Push the control unit into the mounting and secure with the fastening screw -2-. => Tightening torque: 2 Nm (1.5 ftlb.)+10 %-25 %





Plugging in and securing control unit

Subsequent work

Subsequent work for control unit for rear-end electronics

1. Push the fuse/relay carrier into the guide.





Installing fuse/relay carrier

2. Secure the fuse/relay carrier with the two fastening screws -1-. => Tightening torque: 2 Nm (1.5 ftlb.)+10 %-25 %





Unscrewing fastening screws

3. Fit tool kit tray.
4. Close the luggage compartment floor.
5. If the control unit for rear-end electronics was replaced, the values/coding must be written back into the control unit again. -> 578955 Replacing control unit for rear-end electronics 578955 Replacing Control Unit for Rear-end Electronics.