Necessary preliminary tasks
WARNING: Danger of scalding! Only perform this work after engine has cooled down.
IMPORTANT: Wear protective goggles and gloves.
IMPORTANT: Adhere to conditions of absolute cleanliness when working on the engine oil circuit.
When removing engine oil lines and engine oil cooler, seal off all openings with suitable plugs.
To avoid engine damage, do not allow any dirt particles to get into the engine oil circuit.
Recycling
Engine oil escapes when oil lines are released. Catch and dispose of emerging engine oil.
Observe country-specific waste-disposal regulations.
Release screw (1).
On N54 release retainer.
Tightening torque 17 22 6AZ.
Release screw (2).
Tightening torque 17 22 8AZ.
Unlock oil lines (3) and detach from engine oil cooler flange.
Seal off engine oil cooler flange and engine oil lines.
Catch and dispose of emerging oil.
Remove engine oil cooler (4).
Fig. 43: Identifying Engine Oil Cooler With Oil Lines And Mounting Bolts
NOTE: After completing work, check engine oil level and top up engine oil if necessary.
REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (N63)
Necessary preliminary tasks
Detach coolant hose from fan cowl at retainer (1).
Fig. 44: Identifying Coolant Hose Retainer
Unlock and disconnect plug (1) on fan cowl.
Release screw (2) on holder for coolant hoses.
Tightening torque 17 10 5AZ.
Detach coolant hoses with holder from fan cowl.
Fig. 45: Detaching Coolant Hoses From Fan Cowl
Release screw (1).
Tightening torque 17 10 3AZ.
Detach transmission oil cooler upwards from fan cowl.
Fig. 46: Identifying Transmission Oil Cooler Retainer With Mounting Screws
Unclip fan cowl (1) at retainers (2) on left and right, feed out in upward direction and remove.
Fig. 47: Removing Fan Cowl In Upward Direction
Installation:
Insert retaining tab (1) at bottom on module carrier.
Fig. 48: Identifying Fan Cowl Plug
NOTE: Check stored fault message.
Reassemble the vehicle.
Clear fault memory.