17 22 010 Removing and installing/replacing heat exchanger for automatic transmission (M57T2, N54)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Danger of scalding!
Only perform this work after engine has cooled down.

Necessary preliminary tasks:

Follow INSTRUCTIONS FOR WORKING on cooling system.
Drain coolant . See 17 00 005 DRAINING AND ADDING COOLANT (M57T2) or 17 00 005 DRAINING AND ADDING COOLANT (N54, N55) .
Remove fan cowl . See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (M57T2) .

Recycling

Catch and dispose of drained coolant in a suitable container.

Transmission fluid emerges when oil lines are detached from heat exchanger.

Catch and dispose of escaping transmission fluid in a suitable container.

Observe country-specific waste-disposal regulations.

Fig 1: Identifying Coolant Hoses, Lines And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Picture shows M57T2:

Release and disconnect coolant hoses (1).

Release screw and remove lines (2).

Installation:

Replace sealing rings.
Tightening torque: 17 22 1AZ .

Unclip hose (3).

Release screws (4) and remove heat exchanger (5).

Installation:

Tightening torque: 17 22 2AZ .

IMPORTANT: Distance between oil cooler line and ribbed V-belt must be at least 25 mm.
Check fluid level in automatic transmission . See 00 11 500 CHECKING/TOPPING UP OIL LEVEL IN AUTOMATIC TRANSMISSION (GA6HP26Z) or 00 11 500 CHECKING/TOPPING UP OIL LEVEL IN AUTOMATIC TRANSMISSION (GA8HP45Z, GA8HP70Z, GA8HP90Z) .