17 22 010 Removing and installing/replacing heat exchanger for automatic transmission

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2005 BMW 330xi, 2005 BMW 330i, 2005 BMW 330Ci, 2004 BMW 330xi, and 2004 BMW 330i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

17 0 030

Necessary preliminary tasks:

After completing this operation, check fluid level in automatic transmission.
Drain off and top up coolant.

Recycling

Catch and dispose of escaping transmission fluid.

Observe country-specific waste-disposal regulations.

Illustrations show E46.

Unlock lines (1 and 2) with special tool 17 0 030 and detach.

Catch and dispose of escaping transmission fluid.

Fig 1: Unlocking Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Illustrations show E46.

Pull lock (1) upwards and detach heat exchanger towards rear.

Installation:

Press lock (1) downwards before pushing on heat exchanger.

The lock must snap audibly into place when the heat exchanger is forced on.

Fig 2: Pulling Lock Upwards

Courtesy of BMW OF NORTH AMERICA, INC.

Check sealing rings (1), replace if necessary.

Fig 3: Checking Sealing Rings

Courtesy of BMW OF NORTH AMERICA, INC.