17 22 010 Removing and installing or replacing heat exchanger for automatic transmission (N52, N43)

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Special tools required:

17 0 030

Necessary preliminary tasks:

Recycling

Catch and dispose of drained coolant.

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

Catch and dispose of escaping transmission fluid.

Observe country-specific waste-disposal regulations.

Release and disconnect coolant hoses (1).

Release screw.

NOTE: For N43: The front axle subframe is removed for clearer illustration.

Fig 1: Coolant Hoses And Retaining Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect hydraulic lines (1) from heat exchanger with special tool 17 0 030.

Fig 2: Hydraulic Lines And Special Tool (17 0 030)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Check fluid level in automatic transmission, refer to Maintenance and General Information .