Central Electronics Box Fan: Service and Repair

12 90 100 - Replacing fan for electronics box (N52)





Important!
Read and comply with notes on protection against electrostatic damage (ESD protection) 61 35 ... Notes on ESD Protection (Electro Static Discharge).





Necessary preliminary tasks:
- Switch off ignition
- Disconnect battery negative terminal Instructions for Disconnecting and Connecting Battery
- Remove right microfilter housing Removing and Installing/Replacing Left or Right Microfilter Housing Lower Section
- Remove airbag control unit Removing and Installing/Replacing Airbag Control Unit with Gateway Module

Important!
Follow instructions for removing and installing electronic control units Service and Repair.





Unlock cover (1) with slide (3).
Unfasten screws (2).
Remove electronics box cover (1).

Installation Note:
Engage electronics box cover (1) correctly in hinges.
Security version:
Remove DME armor plating.





Disconnect plug connections (1 to 6).
Remove DME control unit.





Unlock plug connection (1) on fan for electronics box and disconnect.
Release screws (2) on device carrier.
Lift out device carrier (2).





Unlock vent duct (1) and remove in direction of arrow.
Remove cover (2) in direction of arrow.





Unscrew nuts.
Pull device holder (1) approx. 3 cm towards rear.





Remove air duct (1) from device holder (2).





Turn connecting piece (1) to right and remove.





Release screws and remove fan (1) in upwards direction.





Check function of DME.